| /* |
| * mdadm - Intel(R) Matrix Storage Manager Support |
| * |
| * Copyright (C) 2002-2008 Intel Corporation |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms and conditions of the GNU General Public License, |
| * version 2, as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| * more details. |
| * |
| * You should have received a copy of the GNU General Public License along with |
| * this program; if not, write to the Free Software Foundation, Inc., |
| * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
| */ |
| |
| #define HAVE_STDINT_H 1 |
| #include "mdadm.h" |
| #include "mdmon.h" |
| #include "sha1.h" |
| #include "platform-intel.h" |
| #include <values.h> |
| #include <scsi/sg.h> |
| #include <ctype.h> |
| #include <dirent.h> |
| |
| /* MPB == Metadata Parameter Block */ |
| #define MPB_SIGNATURE "Intel Raid ISM Cfg Sig. " |
| #define MPB_SIG_LEN (strlen(MPB_SIGNATURE)) |
| #define MPB_VERSION_RAID0 "1.0.00" |
| #define MPB_VERSION_RAID1 "1.1.00" |
| #define MPB_VERSION_MANY_VOLUMES_PER_ARRAY "1.2.00" |
| #define MPB_VERSION_3OR4_DISK_ARRAY "1.2.01" |
| #define MPB_VERSION_RAID5 "1.2.02" |
| #define MPB_VERSION_5OR6_DISK_ARRAY "1.2.04" |
| #define MPB_VERSION_CNG "1.2.06" |
| #define MPB_VERSION_ATTRIBS "1.3.00" |
| #define MAX_SIGNATURE_LENGTH 32 |
| #define MAX_RAID_SERIAL_LEN 16 |
| |
| /* supports RAID0 */ |
| #define MPB_ATTRIB_RAID0 __cpu_to_le32(0x00000001) |
| /* supports RAID1 */ |
| #define MPB_ATTRIB_RAID1 __cpu_to_le32(0x00000002) |
| /* supports RAID10 */ |
| #define MPB_ATTRIB_RAID10 __cpu_to_le32(0x00000004) |
| /* supports RAID1E */ |
| #define MPB_ATTRIB_RAID1E __cpu_to_le32(0x00000008) |
| /* supports RAID5 */ |
| #define MPB_ATTRIB_RAID5 __cpu_to_le32(0x00000010) |
| /* supports RAID CNG */ |
| #define MPB_ATTRIB_RAIDCNG __cpu_to_le32(0x00000020) |
| /* supports expanded stripe sizes of 256K, 512K and 1MB */ |
| #define MPB_ATTRIB_EXP_STRIPE_SIZE __cpu_to_le32(0x00000040) |
| |
| /* The OROM Support RST Caching of Volumes */ |
| #define MPB_ATTRIB_NVM __cpu_to_le32(0x02000000) |
| /* The OROM supports creating disks greater than 2TB */ |
| #define MPB_ATTRIB_2TB_DISK __cpu_to_le32(0x04000000) |
| /* The OROM supports Bad Block Management */ |
| #define MPB_ATTRIB_BBM __cpu_to_le32(0x08000000) |
| |
| /* THe OROM Supports NVM Caching of Volumes */ |
| #define MPB_ATTRIB_NEVER_USE2 __cpu_to_le32(0x10000000) |
| /* The OROM supports creating volumes greater than 2TB */ |
| #define MPB_ATTRIB_2TB __cpu_to_le32(0x20000000) |
| /* originally for PMP, now it's wasted b/c. Never use this bit! */ |
| #define MPB_ATTRIB_NEVER_USE __cpu_to_le32(0x40000000) |
| /* Verify MPB contents against checksum after reading MPB */ |
| #define MPB_ATTRIB_CHECKSUM_VERIFY __cpu_to_le32(0x80000000) |
| |
| /* Define all supported attributes that have to be accepted by mdadm |
| */ |
| #define MPB_ATTRIB_SUPPORTED (MPB_ATTRIB_CHECKSUM_VERIFY | \ |
| MPB_ATTRIB_2TB | \ |
| MPB_ATTRIB_2TB_DISK | \ |
| MPB_ATTRIB_RAID0 | \ |
| MPB_ATTRIB_RAID1 | \ |
| MPB_ATTRIB_RAID10 | \ |
| MPB_ATTRIB_RAID5 | \ |
| MPB_ATTRIB_EXP_STRIPE_SIZE | \ |
| MPB_ATTRIB_BBM) |
| |
| /* Define attributes that are unused but not harmful */ |
| #define MPB_ATTRIB_IGNORED (MPB_ATTRIB_NEVER_USE) |
| |
| #define MPB_SECTOR_CNT 2210 |
| #define IMSM_RESERVED_SECTORS 8192 |
| #define NUM_BLOCKS_DIRTY_STRIPE_REGION 2048 |
| #define SECT_PER_MB_SHIFT 11 |
| #define MAX_SECTOR_SIZE 4096 |
| #define MULTIPLE_PPL_AREA_SIZE_IMSM (1024 * 1024) /* Size of the whole |
| * mutliple PPL area |
| */ |
| |
| /* |
| * Internal Write-intent bitmap is stored in the same area where PPL. |
| * Both features are mutually exclusive, so it is not an issue. |
| * The first 8KiB of the area are reserved and shall not be used. |
| */ |
| #define IMSM_BITMAP_AREA_RESERVED_SIZE 8192 |
| |
| #define IMSM_BITMAP_HEADER_OFFSET (IMSM_BITMAP_AREA_RESERVED_SIZE) |
| #define IMSM_BITMAP_HEADER_SIZE MAX_SECTOR_SIZE |
| |
| #define IMSM_BITMAP_START_OFFSET (IMSM_BITMAP_HEADER_OFFSET + IMSM_BITMAP_HEADER_SIZE) |
| #define IMSM_BITMAP_AREA_SIZE (MULTIPLE_PPL_AREA_SIZE_IMSM - IMSM_BITMAP_START_OFFSET) |
| #define IMSM_BITMAP_AND_HEADER_SIZE (IMSM_BITMAP_AREA_SIZE + IMSM_BITMAP_HEADER_SIZE) |
| |
| #define IMSM_DEFAULT_BITMAP_CHUNKSIZE (64 * 1024 * 1024) |
| #define IMSM_DEFAULT_BITMAP_DAEMON_SLEEP 5 |
| |
| /* |
| * This macro let's us ensure that no-one accidentally |
| * changes the size of a struct |
| */ |
| #define ASSERT_SIZE(_struct, size) \ |
| static inline void __assert_size_##_struct(void) \ |
| { \ |
| switch (0) { \ |
| case 0: break; \ |
| case (sizeof(struct _struct) == size): break; \ |
| } \ |
| } |
| |
| /* Disk configuration info. */ |
| #define IMSM_MAX_DEVICES 255 |
| struct imsm_disk { |
| __u8 serial[MAX_RAID_SERIAL_LEN];/* 0xD8 - 0xE7 ascii serial number */ |
| __u32 total_blocks_lo; /* 0xE8 - 0xEB total blocks lo */ |
| __u32 scsi_id; /* 0xEC - 0xEF scsi ID */ |
| #define SPARE_DISK __cpu_to_le32(0x01) /* Spare */ |
| #define CONFIGURED_DISK __cpu_to_le32(0x02) /* Member of some RaidDev */ |
| #define FAILED_DISK __cpu_to_le32(0x04) /* Permanent failure */ |
| #define JOURNAL_DISK __cpu_to_le32(0x2000000) /* Device marked as Journaling Drive */ |
| __u32 status; /* 0xF0 - 0xF3 */ |
| __u32 owner_cfg_num; /* which config 0,1,2... owns this disk */ |
| __u32 total_blocks_hi; /* 0xF4 - 0xF5 total blocks hi */ |
| #define IMSM_DISK_FILLERS 3 |
| __u32 filler[IMSM_DISK_FILLERS]; /* 0xF5 - 0x107 MPB_DISK_FILLERS for future expansion */ |
| }; |
| ASSERT_SIZE(imsm_disk, 48) |
| |
| /* map selector for map managment |
| */ |
| #define MAP_0 0 |
| #define MAP_1 1 |
| #define MAP_X -1 |
| |
| /* RAID map configuration infos. */ |
| struct imsm_map { |
| __u32 pba_of_lba0_lo; /* start address of partition */ |
| __u32 blocks_per_member_lo;/* blocks per member */ |
| __u32 num_data_stripes_lo; /* number of data stripes */ |
| __u16 blocks_per_strip; |
| __u8 map_state; /* Normal, Uninitialized, Degraded, Failed */ |
| #define IMSM_T_STATE_NORMAL 0 |
| #define IMSM_T_STATE_UNINITIALIZED 1 |
| #define IMSM_T_STATE_DEGRADED 2 |
| #define IMSM_T_STATE_FAILED 3 |
| __u8 raid_level; |
| #define IMSM_T_RAID0 0 |
| #define IMSM_T_RAID1 1 |
| #define IMSM_T_RAID5 5 /* since metadata version 1.2.02 ? */ |
| __u8 num_members; /* number of member disks */ |
| __u8 num_domains; /* number of parity domains */ |
| __u8 failed_disk_num; /* valid only when state is degraded */ |
| __u8 ddf; |
| __u32 pba_of_lba0_hi; |
| __u32 blocks_per_member_hi; |
| __u32 num_data_stripes_hi; |
| __u32 filler[4]; /* expansion area */ |
| #define IMSM_ORD_REBUILD (1 << 24) |
| __u32 disk_ord_tbl[1]; /* disk_ord_tbl[num_members], |
| * top byte contains some flags |
| */ |
| }; |
| ASSERT_SIZE(imsm_map, 52) |
| |
| struct imsm_vol { |
| __u32 curr_migr_unit_lo; |
| __u32 checkpoint_id; /* id to access curr_migr_unit */ |
| __u8 migr_state; /* Normal or Migrating */ |
| #define MIGR_INIT 0 |
| #define MIGR_REBUILD 1 |
| #define MIGR_VERIFY 2 /* analagous to echo check > sync_action */ |
| #define MIGR_GEN_MIGR 3 |
| #define MIGR_STATE_CHANGE 4 |
| #define MIGR_REPAIR 5 |
| __u8 migr_type; /* Initializing, Rebuilding, ... */ |
| #define RAIDVOL_CLEAN 0 |
| #define RAIDVOL_DIRTY 1 |
| #define RAIDVOL_DSRECORD_VALID 2 |
| __u8 dirty; |
| __u8 fs_state; /* fast-sync state for CnG (0xff == disabled) */ |
| __u16 verify_errors; /* number of mismatches */ |
| __u16 bad_blocks; /* number of bad blocks during verify */ |
| __u32 curr_migr_unit_hi; |
| __u32 filler[3]; |
| struct imsm_map map[1]; |
| /* here comes another one if migr_state */ |
| }; |
| ASSERT_SIZE(imsm_vol, 84) |
| |
| struct imsm_dev { |
| __u8 volume[MAX_RAID_SERIAL_LEN]; |
| __u32 size_low; |
| __u32 size_high; |
| #define DEV_BOOTABLE __cpu_to_le32(0x01) |
| #define DEV_BOOT_DEVICE __cpu_to_le32(0x02) |
| #define DEV_READ_COALESCING __cpu_to_le32(0x04) |
| #define DEV_WRITE_COALESCING __cpu_to_le32(0x08) |
| #define DEV_LAST_SHUTDOWN_DIRTY __cpu_to_le32(0x10) |
| #define DEV_HIDDEN_AT_BOOT __cpu_to_le32(0x20) |
| #define DEV_CURRENTLY_HIDDEN __cpu_to_le32(0x40) |
| #define DEV_VERIFY_AND_FIX __cpu_to_le32(0x80) |
| #define DEV_MAP_STATE_UNINIT __cpu_to_le32(0x100) |
| #define DEV_NO_AUTO_RECOVERY __cpu_to_le32(0x200) |
| #define DEV_CLONE_N_GO __cpu_to_le32(0x400) |
| #define DEV_CLONE_MAN_SYNC __cpu_to_le32(0x800) |
| #define DEV_CNG_MASTER_DISK_NUM __cpu_to_le32(0x1000) |
| __u32 status; /* Persistent RaidDev status */ |
| __u32 reserved_blocks; /* Reserved blocks at beginning of volume */ |
| __u8 migr_priority; |
| __u8 num_sub_vols; |
| __u8 tid; |
| __u8 cng_master_disk; |
| __u16 cache_policy; |
| __u8 cng_state; |
| __u8 cng_sub_state; |
| __u16 my_vol_raid_dev_num; /* Used in Unique volume Id for this RaidDev */ |
| |
| /* NVM_EN */ |
| __u8 nv_cache_mode; |
| __u8 nv_cache_flags; |
| |
| /* Unique Volume Id of the NvCache Volume associated with this volume */ |
| __u32 nvc_vol_orig_family_num; |
| __u16 nvc_vol_raid_dev_num; |
| |
| #define RWH_OFF 0 |
| #define RWH_DISTRIBUTED 1 |
| #define RWH_JOURNALING_DRIVE 2 |
| #define RWH_MULTIPLE_DISTRIBUTED 3 |
| #define RWH_MULTIPLE_PPLS_JOURNALING_DRIVE 4 |
| #define RWH_MULTIPLE_OFF 5 |
| #define RWH_BITMAP 6 |
| __u8 rwh_policy; /* Raid Write Hole Policy */ |
| __u8 jd_serial[MAX_RAID_SERIAL_LEN]; /* Journal Drive serial number */ |
| __u8 filler1; |
| |
| #define IMSM_DEV_FILLERS 3 |
| __u32 filler[IMSM_DEV_FILLERS]; |
| struct imsm_vol vol; |
| }; |
| ASSERT_SIZE(imsm_dev, 164) |
| |
| struct imsm_super { |
| __u8 sig[MAX_SIGNATURE_LENGTH]; /* 0x00 - 0x1F */ |
| __u32 check_sum; /* 0x20 - 0x23 MPB Checksum */ |
| __u32 mpb_size; /* 0x24 - 0x27 Size of MPB */ |
| __u32 family_num; /* 0x28 - 0x2B Checksum from first time this config was written */ |
| __u32 generation_num; /* 0x2C - 0x2F Incremented each time this array's MPB is written */ |
| __u32 error_log_size; /* 0x30 - 0x33 in bytes */ |
| __u32 attributes; /* 0x34 - 0x37 */ |
| __u8 num_disks; /* 0x38 Number of configured disks */ |
| __u8 num_raid_devs; /* 0x39 Number of configured volumes */ |
| __u8 error_log_pos; /* 0x3A */ |
| __u8 fill[1]; /* 0x3B */ |
| __u32 cache_size; /* 0x3c - 0x40 in mb */ |
| __u32 orig_family_num; /* 0x40 - 0x43 original family num */ |
| __u32 pwr_cycle_count; /* 0x44 - 0x47 simulated power cycle count for array */ |
| __u32 bbm_log_size; /* 0x48 - 0x4B - size of bad Block Mgmt Log in bytes */ |
| __u16 num_raid_devs_created; /* 0x4C - 0x4D Used for generating unique |
| * volume IDs for raid_dev created in this array |
| * (starts at 1) |
| */ |
| __u16 filler1; /* 0x4E - 0x4F */ |
| __u64 creation_time; /* 0x50 - 0x57 Array creation time */ |
| #define IMSM_FILLERS 32 |
| __u32 filler[IMSM_FILLERS]; /* 0x58 - 0xD7 RAID_MPB_FILLERS */ |
| struct imsm_disk disk[1]; /* 0xD8 diskTbl[numDisks] */ |
| /* here comes imsm_dev[num_raid_devs] */ |
| /* here comes BBM logs */ |
| }; |
| ASSERT_SIZE(imsm_super, 264) |
| |
| #define BBM_LOG_MAX_ENTRIES 254 |
| #define BBM_LOG_MAX_LBA_ENTRY_VAL 256 /* Represents 256 LBAs */ |
| #define BBM_LOG_SIGNATURE 0xabadb10c |
| |
| struct bbm_log_block_addr { |
| __u16 w1; |
| __u32 dw1; |
| } __attribute__ ((__packed__)); |
| |
| struct bbm_log_entry { |
| __u8 marked_count; /* Number of blocks marked - 1 */ |
| __u8 disk_ordinal; /* Disk entry within the imsm_super */ |
| struct bbm_log_block_addr defective_block_start; |
| } __attribute__ ((__packed__)); |
| |
| struct bbm_log { |
| __u32 signature; /* 0xABADB10C */ |
| __u32 entry_count; |
| struct bbm_log_entry marked_block_entries[BBM_LOG_MAX_ENTRIES]; |
| }; |
| ASSERT_SIZE(bbm_log, 2040) |
| |
| static char *map_state_str[] = { "normal", "uninitialized", "degraded", "failed" }; |
| |
| #define BLOCKS_PER_KB (1024/512) |
| |
| #define RAID_DISK_RESERVED_BLOCKS_IMSM_HI 2209 |
| |
| #define GEN_MIGR_AREA_SIZE 2048 /* General Migration Copy Area size in blocks */ |
| |
| #define MIGR_REC_BUF_SECTORS 1 /* size of migr_record i/o buffer in sectors */ |
| #define MIGR_REC_SECTOR_POSITION 1 /* migr_record position offset on disk, |
| * MIGR_REC_BUF_SECTORS <= MIGR_REC_SECTOR_POS |
| */ |
| |
| #define UNIT_SRC_NORMAL 0 /* Source data for curr_migr_unit must |
| * be recovered using srcMap */ |
| #define UNIT_SRC_IN_CP_AREA 1 /* Source data for curr_migr_unit has |
| * already been migrated and must |
| * be recovered from checkpoint area */ |
| |
| #define PPL_ENTRY_SPACE (128 * 1024) /* Size of single PPL, without the header */ |
| |
| struct migr_record { |
| __u32 rec_status; /* Status used to determine how to restart |
| * migration in case it aborts |
| * in some fashion */ |
| __u32 curr_migr_unit_lo; /* 0..numMigrUnits-1 */ |
| __u32 family_num; /* Family number of MPB |
| * containing the RaidDev |
| * that is migrating */ |
| __u32 ascending_migr; /* True if migrating in increasing |
| * order of lbas */ |
| __u32 blocks_per_unit; /* Num disk blocks per unit of operation */ |
| __u32 dest_depth_per_unit; /* Num member blocks each destMap |
| * member disk |
| * advances per unit-of-operation */ |
| __u32 ckpt_area_pba_lo; /* Pba of first block of ckpt copy area */ |
| __u32 dest_1st_member_lba_lo; /* First member lba on first |
| * stripe of destination */ |
| __u32 num_migr_units_lo; /* Total num migration units-of-op */ |
| __u32 post_migr_vol_cap; /* Size of volume after |
| * migration completes */ |
| __u32 post_migr_vol_cap_hi; /* Expansion space for LBA64 */ |
| __u32 ckpt_read_disk_num; /* Which member disk in destSubMap[0] the |
| * migration ckpt record was read from |
| * (for recovered migrations) */ |
| __u32 curr_migr_unit_hi; /* 0..numMigrUnits-1 high order 32 bits */ |
| __u32 ckpt_area_pba_hi; /* Pba of first block of ckpt copy area |
| * high order 32 bits */ |
| __u32 dest_1st_member_lba_hi; /* First member lba on first stripe of |
| * destination - high order 32 bits */ |
| __u32 num_migr_units_hi; /* Total num migration units-of-op |
| * high order 32 bits */ |
| __u32 filler[16]; |
| }; |
| ASSERT_SIZE(migr_record, 128) |
| |
| struct md_list { |
| /* usage marker: |
| * 1: load metadata |
| * 2: metadata does not match |
| * 4: already checked |
| */ |
| int used; |
| char *devname; |
| int found; |
| int container; |
| dev_t st_rdev; |
| struct md_list *next; |
| }; |
| |
| #define pr_vrb(fmt, arg...) (void) (verbose && pr_err(fmt, ##arg)) |
| |
| static __u8 migr_type(struct imsm_dev *dev) |
| { |
| if (dev->vol.migr_type == MIGR_VERIFY && |
| dev->status & DEV_VERIFY_AND_FIX) |
| return MIGR_REPAIR; |
| else |
| return dev->vol.migr_type; |
| } |
| |
| static void set_migr_type(struct imsm_dev *dev, __u8 migr_type) |
| { |
| /* for compatibility with older oroms convert MIGR_REPAIR, into |
| * MIGR_VERIFY w/ DEV_VERIFY_AND_FIX status |
| */ |
| if (migr_type == MIGR_REPAIR) { |
| dev->vol.migr_type = MIGR_VERIFY; |
| dev->status |= DEV_VERIFY_AND_FIX; |
| } else { |
| dev->vol.migr_type = migr_type; |
| dev->status &= ~DEV_VERIFY_AND_FIX; |
| } |
| } |
| |
| static unsigned int sector_count(__u32 bytes, unsigned int sector_size) |
| { |
| return ROUND_UP(bytes, sector_size) / sector_size; |
| } |
| |
| static unsigned int mpb_sectors(struct imsm_super *mpb, |
| unsigned int sector_size) |
| { |
| return sector_count(__le32_to_cpu(mpb->mpb_size), sector_size); |
| } |
| |
| struct intel_dev { |
| struct imsm_dev *dev; |
| struct intel_dev *next; |
| unsigned index; |
| }; |
| |
| struct intel_hba { |
| enum sys_dev_type type; |
| char *path; |
| char *pci_id; |
| struct intel_hba *next; |
| }; |
| |
| enum action { |
| DISK_REMOVE = 1, |
| DISK_ADD |
| }; |
| /* internal representation of IMSM metadata */ |
| struct intel_super { |
| union { |
| void *buf; /* O_DIRECT buffer for reading/writing metadata */ |
| struct imsm_super *anchor; /* immovable parameters */ |
| }; |
| union { |
| void *migr_rec_buf; /* buffer for I/O operations */ |
| struct migr_record *migr_rec; /* migration record */ |
| }; |
| int clean_migration_record_by_mdmon; /* when reshape is switched to next |
| array, it indicates that mdmon is allowed to clean migration |
| record */ |
| size_t len; /* size of the 'buf' allocation */ |
| size_t extra_space; /* extra space in 'buf' that is not used yet */ |
| void *next_buf; /* for realloc'ing buf from the manager */ |
| size_t next_len; |
| int updates_pending; /* count of pending updates for mdmon */ |
| int current_vol; /* index of raid device undergoing creation */ |
| unsigned long long create_offset; /* common start for 'current_vol' */ |
| __u32 random; /* random data for seeding new family numbers */ |
| struct intel_dev *devlist; |
| unsigned int sector_size; /* sector size of used member drives */ |
| struct dl { |
| struct dl *next; |
| int index; |
| __u8 serial[MAX_RAID_SERIAL_LEN]; |
| int major, minor; |
| char *devname; |
| struct imsm_disk disk; |
| int fd; |
| int extent_cnt; |
| struct extent *e; /* for determining freespace @ create */ |
| int raiddisk; /* slot to fill in autolayout */ |
| enum action action; |
| } *disks, *current_disk; |
| struct dl *disk_mgmt_list; /* list of disks to add/remove while mdmon |
| active */ |
| struct dl *missing; /* disks removed while we weren't looking */ |
| struct bbm_log *bbm_log; |
| struct intel_hba *hba; /* device path of the raid controller for this metadata */ |
| const struct imsm_orom *orom; /* platform firmware support */ |
| struct intel_super *next; /* (temp) list for disambiguating family_num */ |
| struct md_bb bb; /* memory for get_bad_blocks call */ |
| }; |
| |
| struct intel_disk { |
| struct imsm_disk disk; |
| #define IMSM_UNKNOWN_OWNER (-1) |
| int owner; |
| struct intel_disk *next; |
| }; |
| |
| struct extent { |
| unsigned long long start, size; |
| }; |
| |
| /* definitions of reshape process types */ |
| enum imsm_reshape_type { |
| CH_TAKEOVER, |
| CH_MIGRATION, |
| CH_ARRAY_SIZE, |
| }; |
| |
| /* definition of messages passed to imsm_process_update */ |
| enum imsm_update_type { |
| update_activate_spare, |
| update_create_array, |
| update_kill_array, |
| update_rename_array, |
| update_add_remove_disk, |
| update_reshape_container_disks, |
| update_reshape_migration, |
| update_takeover, |
| update_general_migration_checkpoint, |
| update_size_change, |
| update_prealloc_badblocks_mem, |
| update_rwh_policy, |
| }; |
| |
| struct imsm_update_activate_spare { |
| enum imsm_update_type type; |
| struct dl *dl; |
| int slot; |
| int array; |
| struct imsm_update_activate_spare *next; |
| }; |
| |
| struct geo_params { |
| char devnm[32]; |
| char *dev_name; |
| unsigned long long size; |
| int level; |
| int layout; |
| int chunksize; |
| int raid_disks; |
| }; |
| |
| enum takeover_direction { |
| R10_TO_R0, |
| R0_TO_R10 |
| }; |
| struct imsm_update_takeover { |
| enum imsm_update_type type; |
| int subarray; |
| enum takeover_direction direction; |
| }; |
| |
| struct imsm_update_reshape { |
| enum imsm_update_type type; |
| int old_raid_disks; |
| int new_raid_disks; |
| |
| int new_disks[1]; /* new_raid_disks - old_raid_disks makedev number */ |
| }; |
| |
| struct imsm_update_reshape_migration { |
| enum imsm_update_type type; |
| int old_raid_disks; |
| int new_raid_disks; |
| /* fields for array migration changes |
| */ |
| int subdev; |
| int new_level; |
| int new_layout; |
| int new_chunksize; |
| |
| int new_disks[1]; /* new_raid_disks - old_raid_disks makedev number */ |
| }; |
| |
| struct imsm_update_size_change { |
| enum imsm_update_type type; |
| int subdev; |
| long long new_size; |
| }; |
| |
| struct imsm_update_general_migration_checkpoint { |
| enum imsm_update_type type; |
| __u64 curr_migr_unit; |
| }; |
| |
| struct disk_info { |
| __u8 serial[MAX_RAID_SERIAL_LEN]; |
| }; |
| |
| struct imsm_update_create_array { |
| enum imsm_update_type type; |
| int dev_idx; |
| struct imsm_dev dev; |
| }; |
| |
| struct imsm_update_kill_array { |
| enum imsm_update_type type; |
| int dev_idx; |
| }; |
| |
| struct imsm_update_rename_array { |
| enum imsm_update_type type; |
| __u8 name[MAX_RAID_SERIAL_LEN]; |
| int dev_idx; |
| }; |
| |
| struct imsm_update_add_remove_disk { |
| enum imsm_update_type type; |
| }; |
| |
| struct imsm_update_prealloc_bb_mem { |
| enum imsm_update_type type; |
| }; |
| |
| struct imsm_update_rwh_policy { |
| enum imsm_update_type type; |
| int new_policy; |
| int dev_idx; |
| }; |
| |
| static const char *_sys_dev_type[] = { |
| [SYS_DEV_UNKNOWN] = "Unknown", |
| [SYS_DEV_SAS] = "SAS", |
| [SYS_DEV_SATA] = "SATA", |
| [SYS_DEV_NVME] = "NVMe", |
| [SYS_DEV_VMD] = "VMD" |
| }; |
| |
| const char *get_sys_dev_type(enum sys_dev_type type) |
| { |
| if (type >= SYS_DEV_MAX) |
| type = SYS_DEV_UNKNOWN; |
| |
| return _sys_dev_type[type]; |
| } |
| |
| static struct intel_hba * alloc_intel_hba(struct sys_dev *device) |
| { |
| struct intel_hba *result = xmalloc(sizeof(*result)); |
| |
| result->type = device->type; |
| result->path = xstrdup(device->path); |
| result->next = NULL; |
| if (result->path && (result->pci_id = strrchr(result->path, '/')) != NULL) |
| result->pci_id++; |
| |
| return result; |
| } |
| |
| static struct intel_hba * find_intel_hba(struct intel_hba *hba, struct sys_dev *device) |
| { |
| struct intel_hba *result; |
| |
| for (result = hba; result; result = result->next) { |
| if (result->type == device->type && strcmp(result->path, device->path) == 0) |
| break; |
| } |
| return result; |
| } |
| |
| static int attach_hba_to_super(struct intel_super *super, struct sys_dev *device) |
| { |
| struct intel_hba *hba; |
| |
| /* check if disk attached to Intel HBA */ |
| hba = find_intel_hba(super->hba, device); |
| if (hba != NULL) |
| return 1; |
| /* Check if HBA is already attached to super */ |
| if (super->hba == NULL) { |
| super->hba = alloc_intel_hba(device); |
| return 1; |
| } |
| |
| hba = super->hba; |
| /* Intel metadata allows for all disks attached to the same type HBA. |
| * Do not support HBA types mixing |
| */ |
| if (device->type != hba->type) |
| return 2; |
| |
| /* Multiple same type HBAs can be used if they share the same OROM */ |
| const struct imsm_orom *device_orom = get_orom_by_device_id(device->dev_id); |
| |
| if (device_orom != super->orom) |
| return 2; |
| |
| while (hba->next) |
| hba = hba->next; |
| |
| hba->next = alloc_intel_hba(device); |
| return 1; |
| } |
| |
| static struct sys_dev* find_disk_attached_hba(int fd, const char *devname) |
| { |
| struct sys_dev *list, *elem; |
| char *disk_path; |
| |
| if ((list = find_intel_devices()) == NULL) |
| return 0; |
| |
| if (fd < 0) |
| disk_path = (char *) devname; |
| else |
| disk_path = diskfd_to_devpath(fd); |
| |
| if (!disk_path) |
| return 0; |
| |
| for (elem = list; elem; elem = elem->next) |
| if (path_attached_to_hba(disk_path, elem->path)) |
| return elem; |
| |
| if (disk_path != devname) |
| free(disk_path); |
| |
| return NULL; |
| } |
| |
| static int find_intel_hba_capability(int fd, struct intel_super *super, |
| char *devname); |
| |
| static struct supertype *match_metadata_desc_imsm(char *arg) |
| { |
| struct supertype *st; |
| |
| if (strcmp(arg, "imsm") != 0 && |
| strcmp(arg, "default") != 0 |
| ) |
| return NULL; |
| |
| st = xcalloc(1, sizeof(*st)); |
| st->ss = &super_imsm; |
| st->max_devs = IMSM_MAX_DEVICES; |
| st->minor_version = 0; |
| st->sb = NULL; |
| return st; |
| } |
| |
| static __u8 *get_imsm_version(struct imsm_super *mpb) |
| { |
| return &mpb->sig[MPB_SIG_LEN]; |
| } |
| |
| /* retrieve a disk directly from the anchor when the anchor is known to be |
| * up-to-date, currently only at load time |
| */ |
| static struct imsm_disk *__get_imsm_disk(struct imsm_super *mpb, __u8 index) |
| { |
| if (index >= mpb->num_disks) |
| return NULL; |
| return &mpb->disk[index]; |
| } |
| |
| /* retrieve the disk description based on a index of the disk |
| * in the sub-array |
| */ |
| static struct dl *get_imsm_dl_disk(struct intel_super *super, __u8 index) |
| { |
| struct dl *d; |
| |
| for (d = super->disks; d; d = d->next) |
| if (d->index == index) |
| return d; |
| |
| return NULL; |
| } |
| /* retrieve a disk from the parsed metadata */ |
| static struct imsm_disk *get_imsm_disk(struct intel_super *super, __u8 index) |
| { |
| struct dl *dl; |
| |
| dl = get_imsm_dl_disk(super, index); |
| if (dl) |
| return &dl->disk; |
| |
| return NULL; |
| } |
| |
| /* generate a checksum directly from the anchor when the anchor is known to be |
| * up-to-date, currently only at load or write_super after coalescing |
| */ |
| static __u32 __gen_imsm_checksum(struct imsm_super *mpb) |
| { |
| __u32 end = mpb->mpb_size / sizeof(end); |
| __u32 *p = (__u32 *) mpb; |
| __u32 sum = 0; |
| |
| while (end--) { |
| sum += __le32_to_cpu(*p); |
| p++; |
| } |
| |
| return sum - __le32_to_cpu(mpb->check_sum); |
| } |
| |
| static size_t sizeof_imsm_map(struct imsm_map *map) |
| { |
| return sizeof(struct imsm_map) + sizeof(__u32) * (map->num_members - 1); |
| } |
| |
| struct imsm_map *get_imsm_map(struct imsm_dev *dev, int second_map) |
| { |
| /* A device can have 2 maps if it is in the middle of a migration. |
| * If second_map is: |
| * MAP_0 - we return the first map |
| * MAP_1 - we return the second map if it exists, else NULL |
| * MAP_X - we return the second map if it exists, else the first |
| */ |
| struct imsm_map *map = &dev->vol.map[0]; |
| struct imsm_map *map2 = NULL; |
| |
| if (dev->vol.migr_state) |
| map2 = (void *)map + sizeof_imsm_map(map); |
| |
| switch (second_map) { |
| case MAP_0: |
| break; |
| case MAP_1: |
| map = map2; |
| break; |
| case MAP_X: |
| if (map2) |
| map = map2; |
| break; |
| default: |
| map = NULL; |
| } |
| return map; |
| |
| } |
| |
| /* return the size of the device. |
| * migr_state increases the returned size if map[0] were to be duplicated |
| */ |
| static size_t sizeof_imsm_dev(struct imsm_dev *dev, int migr_state) |
| { |
| size_t size = sizeof(*dev) - sizeof(struct imsm_map) + |
| sizeof_imsm_map(get_imsm_map(dev, MAP_0)); |
| |
| /* migrating means an additional map */ |
| if (dev->vol.migr_state) |
| size += sizeof_imsm_map(get_imsm_map(dev, MAP_1)); |
| else if (migr_state) |
| size += sizeof_imsm_map(get_imsm_map(dev, MAP_0)); |
| |
| return size; |
| } |
| |
| /* retrieve disk serial number list from a metadata update */ |
| static struct disk_info *get_disk_info(struct imsm_update_create_array *update) |
| { |
| void *u = update; |
| struct disk_info *inf; |
| |
| inf = u + sizeof(*update) - sizeof(struct imsm_dev) + |
| sizeof_imsm_dev(&update->dev, 0); |
| |
| return inf; |
| } |
| |
| static struct imsm_dev *__get_imsm_dev(struct imsm_super *mpb, __u8 index) |
| { |
| int offset; |
| int i; |
| void *_mpb = mpb; |
| |
| if (index >= mpb->num_raid_devs) |
| return NULL; |
| |
| /* devices start after all disks */ |
| offset = ((void *) &mpb->disk[mpb->num_disks]) - _mpb; |
| |
| for (i = 0; i <= index; i++) |
| if (i == index) |
| return _mpb + offset; |
| else |
| offset += sizeof_imsm_dev(_mpb + offset, 0); |
| |
| return NULL; |
| } |
| |
| static struct imsm_dev *get_imsm_dev(struct intel_super *super, __u8 index) |
| { |
| struct intel_dev *dv; |
| |
| if (index >= super->anchor->num_raid_devs) |
| return NULL; |
| for (dv = super->devlist; dv; dv = dv->next) |
| if (dv->index == index) |
| return dv->dev; |
| return NULL; |
| } |
| |
| static inline unsigned long long __le48_to_cpu(const struct bbm_log_block_addr |
| *addr) |
| { |
| return ((((__u64)__le32_to_cpu(addr->dw1)) << 16) | |
| __le16_to_cpu(addr->w1)); |
| } |
| |
| static inline struct bbm_log_block_addr __cpu_to_le48(unsigned long long sec) |
| { |
| struct bbm_log_block_addr addr; |
| |
| addr.w1 = __cpu_to_le16((__u16)(sec & 0xffff)); |
| addr.dw1 = __cpu_to_le32((__u32)(sec >> 16) & 0xffffffff); |
| return addr; |
| } |
| |
| /* get size of the bbm log */ |
| static __u32 get_imsm_bbm_log_size(struct bbm_log *log) |
| { |
| if (!log || log->entry_count == 0) |
| return 0; |
| |
| return sizeof(log->signature) + |
| sizeof(log->entry_count) + |
| log->entry_count * sizeof(struct bbm_log_entry); |
| } |
| |
| /* check if bad block is not partially stored in bbm log */ |
| static int is_stored_in_bbm(struct bbm_log *log, const __u8 idx, const unsigned |
| long long sector, const int length, __u32 *pos) |
| { |
| __u32 i; |
| |
| for (i = *pos; i < log->entry_count; i++) { |
| struct bbm_log_entry *entry = &log->marked_block_entries[i]; |
| unsigned long long bb_start; |
| unsigned long long bb_end; |
| |
| bb_start = __le48_to_cpu(&entry->defective_block_start); |
| bb_end = bb_start + (entry->marked_count + 1); |
| |
| if ((entry->disk_ordinal == idx) && (bb_start >= sector) && |
| (bb_end <= sector + length)) { |
| *pos = i; |
| return 1; |
| } |
| } |
| return 0; |
| } |
| |
| /* record new bad block in bbm log */ |
| static int record_new_badblock(struct bbm_log *log, const __u8 idx, unsigned |
| long long sector, int length) |
| { |
| int new_bb = 0; |
| __u32 pos = 0; |
| struct bbm_log_entry *entry = NULL; |
| |
| while (is_stored_in_bbm(log, idx, sector, length, &pos)) { |
| struct bbm_log_entry *e = &log->marked_block_entries[pos]; |
| |
| if ((e->marked_count + 1 == BBM_LOG_MAX_LBA_ENTRY_VAL) && |
| (__le48_to_cpu(&e->defective_block_start) == sector)) { |
| sector += BBM_LOG_MAX_LBA_ENTRY_VAL; |
| length -= BBM_LOG_MAX_LBA_ENTRY_VAL; |
| pos = pos + 1; |
| continue; |
| } |
| entry = e; |
| break; |
| } |
| |
| if (entry) { |
| int cnt = (length <= BBM_LOG_MAX_LBA_ENTRY_VAL) ? length : |
| BBM_LOG_MAX_LBA_ENTRY_VAL; |
| entry->defective_block_start = __cpu_to_le48(sector); |
| entry->marked_count = cnt - 1; |
| if (cnt == length) |
| return 1; |
| sector += cnt; |
| length -= cnt; |
| } |
| |
| new_bb = ROUND_UP(length, BBM_LOG_MAX_LBA_ENTRY_VAL) / |
| BBM_LOG_MAX_LBA_ENTRY_VAL; |
| if (log->entry_count + new_bb > BBM_LOG_MAX_ENTRIES) |
| return 0; |
| |
| while (length > 0) { |
| int cnt = (length <= BBM_LOG_MAX_LBA_ENTRY_VAL) ? length : |
| BBM_LOG_MAX_LBA_ENTRY_VAL; |
| struct bbm_log_entry *entry = |
| &log->marked_block_entries[log->entry_count]; |
| |
| entry->defective_block_start = __cpu_to_le48(sector); |
| entry->marked_count = cnt - 1; |
| entry->disk_ordinal = idx; |
| |
| sector += cnt; |
| length -= cnt; |
| |
| log->entry_count++; |
| } |
| |
| return new_bb; |
| } |
| |
| /* clear all bad blocks for given disk */ |
| static void clear_disk_badblocks(struct bbm_log *log, const __u8 idx) |
| { |
| __u32 i = 0; |
| |
| while (i < log->entry_count) { |
| struct bbm_log_entry *entries = log->marked_block_entries; |
| |
| if (entries[i].disk_ordinal == idx) { |
| if (i < log->entry_count - 1) |
| entries[i] = entries[log->entry_count - 1]; |
| log->entry_count--; |
| } else { |
| i++; |
| } |
| } |
| } |
| |
| /* clear given bad block */ |
| static int clear_badblock(struct bbm_log *log, const __u8 idx, const unsigned |
| long long sector, const int length) { |
| __u32 i = 0; |
| |
| while (i < log->entry_count) { |
| struct bbm_log_entry *entries = log->marked_block_entries; |
| |
| if ((entries[i].disk_ordinal == idx) && |
| (__le48_to_cpu(&entries[i].defective_block_start) == |
| sector) && (entries[i].marked_count + 1 == length)) { |
| if (i < log->entry_count - 1) |
| entries[i] = entries[log->entry_count - 1]; |
| log->entry_count--; |
| break; |
| } |
| i++; |
| } |
| |
| return 1; |
| } |
| |
| /* allocate and load BBM log from metadata */ |
| static int load_bbm_log(struct intel_super *super) |
| { |
| struct imsm_super *mpb = super->anchor; |
| __u32 bbm_log_size = __le32_to_cpu(mpb->bbm_log_size); |
| |
| super->bbm_log = xcalloc(1, sizeof(struct bbm_log)); |
| if (!super->bbm_log) |
| return 1; |
| |
| if (bbm_log_size) { |
| struct bbm_log *log = (void *)mpb + |
| __le32_to_cpu(mpb->mpb_size) - bbm_log_size; |
| |
| __u32 entry_count; |
| |
| if (bbm_log_size < sizeof(log->signature) + |
| sizeof(log->entry_count)) |
| return 2; |
| |
| entry_count = __le32_to_cpu(log->entry_count); |
| if ((__le32_to_cpu(log->signature) != BBM_LOG_SIGNATURE) || |
| (entry_count > BBM_LOG_MAX_ENTRIES)) |
| return 3; |
| |
| if (bbm_log_size != |
| sizeof(log->signature) + sizeof(log->entry_count) + |
| entry_count * sizeof(struct bbm_log_entry)) |
| return 4; |
| |
| memcpy(super->bbm_log, log, bbm_log_size); |
| } else { |
| super->bbm_log->signature = __cpu_to_le32(BBM_LOG_SIGNATURE); |
| super->bbm_log->entry_count = 0; |
| } |
| |
| return 0; |
| } |
| |
| /* checks if bad block is within volume boundaries */ |
| static int is_bad_block_in_volume(const struct bbm_log_entry *entry, |
| const unsigned long long start_sector, |
| const unsigned long long size) |
| { |
| unsigned long long bb_start; |
| unsigned long long bb_end; |
| |
| bb_start = __le48_to_cpu(&entry->defective_block_start); |
| bb_end = bb_start + (entry->marked_count + 1); |
| |
| if (((bb_start >= start_sector) && (bb_start < start_sector + size)) || |
| ((bb_end >= start_sector) && (bb_end <= start_sector + size))) |
| return 1; |
| |
| return 0; |
| } |
| |
| /* get list of bad blocks on a drive for a volume */ |
| static void get_volume_badblocks(const struct bbm_log *log, const __u8 idx, |
| const unsigned long long start_sector, |
| const unsigned long long size, |
| struct md_bb *bbs) |
| { |
| __u32 count = 0; |
| __u32 i; |
| |
| for (i = 0; i < log->entry_count; i++) { |
| const struct bbm_log_entry *ent = |
| &log->marked_block_entries[i]; |
| struct md_bb_entry *bb; |
| |
| if ((ent->disk_ordinal == idx) && |
| is_bad_block_in_volume(ent, start_sector, size)) { |
| |
| if (!bbs->entries) { |
| bbs->entries = xmalloc(BBM_LOG_MAX_ENTRIES * |
| sizeof(*bb)); |
| if (!bbs->entries) |
| break; |
| } |
| |
| bb = &bbs->entries[count++]; |
| bb->sector = __le48_to_cpu(&ent->defective_block_start); |
| bb->length = ent->marked_count + 1; |
| } |
| } |
| bbs->count = count; |
| } |
| |
| /* |
| * for second_map: |
| * == MAP_0 get first map |
| * == MAP_1 get second map |
| * == MAP_X than get map according to the current migr_state |
| */ |
| static __u32 get_imsm_ord_tbl_ent(struct imsm_dev *dev, |
| int slot, |
| int second_map) |
| { |
| struct imsm_map *map; |
| |
| map = get_imsm_map(dev, second_map); |
| |
| /* top byte identifies disk under rebuild */ |
| return __le32_to_cpu(map->disk_ord_tbl[slot]); |
| } |
| |
| #define ord_to_idx(ord) (((ord) << 8) >> 8) |
| static __u32 get_imsm_disk_idx(struct imsm_dev *dev, int slot, int second_map) |
| { |
| __u32 ord = get_imsm_ord_tbl_ent(dev, slot, second_map); |
| |
| return ord_to_idx(ord); |
| } |
| |
| static void set_imsm_ord_tbl_ent(struct imsm_map *map, int slot, __u32 ord) |
| { |
| map->disk_ord_tbl[slot] = __cpu_to_le32(ord); |
| } |
| |
| static int get_imsm_disk_slot(struct imsm_map *map, unsigned idx) |
| { |
| int slot; |
| __u32 ord; |
| |
| for (slot = 0; slot < map->num_members; slot++) { |
| ord = __le32_to_cpu(map->disk_ord_tbl[slot]); |
| if (ord_to_idx(ord) == idx) |
| return slot; |
| } |
| |
| return -1; |
| } |
| |
| static int get_imsm_raid_level(struct imsm_map *map) |
| { |
| if (map->raid_level == 1) { |
| if (map->num_members == 2) |
| return 1; |
| else |
| return 10; |
| } |
| |
| return map->raid_level; |
| } |
| |
| static int cmp_extent(const void *av, const void *bv) |
| { |
| const struct extent *a = av; |
| const struct extent *b = bv; |
| if (a->start < b->start) |
| return -1; |
| if (a->start > b->start) |
| return 1; |
| return 0; |
| } |
| |
| static int count_memberships(struct dl *dl, struct intel_super *super) |
| { |
| int memberships = 0; |
| int i; |
| |
| for (i = 0; i < super->anchor->num_raid_devs; i++) { |
| struct imsm_dev *dev = get_imsm_dev(super, i); |
| struct imsm_map *map = get_imsm_map(dev, MAP_0); |
| |
| if (get_imsm_disk_slot(map, dl->index) >= 0) |
| memberships++; |
| } |
| |
| return memberships; |
| } |
| |
| static __u32 imsm_min_reserved_sectors(struct intel_super *super); |
| |
| static int split_ull(unsigned long long n, void *lo, void *hi) |
| { |
| if (lo == 0 || hi == 0) |
| return 1; |
| __put_unaligned32(__cpu_to_le32((__u32)n), lo); |
| __put_unaligned32(__cpu_to_le32((n >> 32)), hi); |
| return 0; |
| } |
| |
| static unsigned long long join_u32(__u32 lo, __u32 hi) |
| { |
| return (unsigned long long)__le32_to_cpu(lo) | |
| (((unsigned long long)__le32_to_cpu(hi)) << 32); |
| } |
| |
| static unsigned long long total_blocks(struct imsm_disk *disk) |
| { |
| if (disk == NULL) |
| return 0; |
| return join_u32(disk->total_blocks_lo, disk->total_blocks_hi); |
| } |
| |
| static unsigned long long pba_of_lba0(struct imsm_map *map) |
| { |
| if (map == NULL) |
| return 0; |
| return join_u32(map->pba_of_lba0_lo, map->pba_of_lba0_hi); |
| } |
| |
| static unsigned long long blocks_per_member(struct imsm_map *map) |
| { |
| if (map == NULL) |
| return 0; |
| return join_u32(map->blocks_per_member_lo, map->blocks_per_member_hi); |
| } |
| |
| static unsigned long long num_data_stripes(struct imsm_map *map) |
| { |
| if (map == NULL) |
| return 0; |
| return join_u32(map->num_data_stripes_lo, map->num_data_stripes_hi); |
| } |
| |
| static unsigned long long vol_curr_migr_unit(struct imsm_dev *dev) |
| { |
| if (dev == NULL) |
| return 0; |
| |
| return join_u32(dev->vol.curr_migr_unit_lo, dev->vol.curr_migr_unit_hi); |
| } |
| |
| static unsigned long long imsm_dev_size(struct imsm_dev *dev) |
| { |
| if (dev == NULL) |
| return 0; |
| return join_u32(dev->size_low, dev->size_high); |
| } |
| |
| static unsigned long long migr_chkp_area_pba(struct migr_record *migr_rec) |
| { |
| if (migr_rec == NULL) |
| return 0; |
| return join_u32(migr_rec->ckpt_area_pba_lo, |
| migr_rec->ckpt_area_pba_hi); |
| } |
| |
| static unsigned long long current_migr_unit(struct migr_record *migr_rec) |
| { |
| if (migr_rec == NULL) |
| return 0; |
| return join_u32(migr_rec->curr_migr_unit_lo, |
| migr_rec->curr_migr_unit_hi); |
| } |
| |
| static unsigned long long migr_dest_1st_member_lba(struct migr_record *migr_rec) |
| { |
| if (migr_rec == NULL) |
| return 0; |
| return join_u32(migr_rec->dest_1st_member_lba_lo, |
| migr_rec->dest_1st_member_lba_hi); |
| } |
| |
| static unsigned long long get_num_migr_units(struct migr_record *migr_rec) |
| { |
| if (migr_rec == NULL) |
| return 0; |
| return join_u32(migr_rec->num_migr_units_lo, |
| migr_rec->num_migr_units_hi); |
| } |
| |
| static void set_total_blocks(struct imsm_disk *disk, unsigned long long n) |
| { |
| split_ull(n, &disk->total_blocks_lo, &disk->total_blocks_hi); |
| } |
| |
| static void set_pba_of_lba0(struct imsm_map *map, unsigned long long n) |
| { |
| split_ull(n, &map->pba_of_lba0_lo, &map->pba_of_lba0_hi); |
| } |
| |
| static void set_blocks_per_member(struct imsm_map *map, unsigned long long n) |
| { |
| split_ull(n, &map->blocks_per_member_lo, &map->blocks_per_member_hi); |
| } |
| |
| static void set_num_data_stripes(struct imsm_map *map, unsigned long long n) |
| { |
| split_ull(n, &map->num_data_stripes_lo, &map->num_data_stripes_hi); |
| } |
| |
| static void set_vol_curr_migr_unit(struct imsm_dev *dev, unsigned long long n) |
| { |
| if (dev == NULL) |
| return; |
| |
| split_ull(n, &dev->vol.curr_migr_unit_lo, &dev->vol.curr_migr_unit_hi); |
| } |
| |
| static void set_imsm_dev_size(struct imsm_dev *dev, unsigned long long n) |
| { |
| split_ull(n, &dev->size_low, &dev->size_high); |
| } |
| |
| static void set_migr_chkp_area_pba(struct migr_record *migr_rec, |
| unsigned long long n) |
| { |
| split_ull(n, &migr_rec->ckpt_area_pba_lo, &migr_rec->ckpt_area_pba_hi); |
| } |
| |
| static void set_current_migr_unit(struct migr_record *migr_rec, |
| unsigned long long n) |
| { |
| split_ull(n, &migr_rec->curr_migr_unit_lo, |
| &migr_rec->curr_migr_unit_hi); |
| } |
| |
| static void set_migr_dest_1st_member_lba(struct migr_record *migr_rec, |
| unsigned long long n) |
| { |
| split_ull(n, &migr_rec->dest_1st_member_lba_lo, |
| &migr_rec->dest_1st_member_lba_hi); |
| } |
| |
| static void set_num_migr_units(struct migr_record *migr_rec, |
| unsigned long long n) |
| { |
| split_ull(n, &migr_rec->num_migr_units_lo, |
| &migr_rec->num_migr_units_hi); |
| } |
| |
| static unsigned long long per_dev_array_size(struct imsm_map *map) |
| { |
| unsigned long long array_size = 0; |
| |
| if (map == NULL) |
| return array_size; |
| |
| array_size = num_data_stripes(map) * map->blocks_per_strip; |
| if (get_imsm_raid_level(map) == 1 || get_imsm_raid_level(map) == 10) |
| array_size *= 2; |
| |
| return array_size; |
| } |
| |
| static struct extent *get_extents(struct intel_super *super, struct dl *dl, |
| int get_minimal_reservation) |
| { |
| /* find a list of used extents on the given physical device */ |
| struct extent *rv, *e; |
| int i; |
| int memberships = count_memberships(dl, super); |
| __u32 reservation; |
| |
| /* trim the reserved area for spares, so they can join any array |
| * regardless of whether the OROM has assigned sectors from the |
| * IMSM_RESERVED_SECTORS region |
| */ |
| if (dl->index == -1 || get_minimal_reservation) |
| reservation = imsm_min_reserved_sectors(super); |
| else |
| reservation = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; |
| |
| rv = xcalloc(sizeof(struct extent), (memberships + 1)); |
| e = rv; |
| |
| for (i = 0; i < super->anchor->num_raid_devs; i++) { |
| struct imsm_dev *dev = get_imsm_dev(super, i); |
| struct imsm_map *map = get_imsm_map(dev, MAP_0); |
| |
| if (get_imsm_disk_slot(map, dl->index) >= 0) { |
| e->start = pba_of_lba0(map); |
| e->size = per_dev_array_size(map); |
| e++; |
| } |
| } |
| qsort(rv, memberships, sizeof(*rv), cmp_extent); |
| |
| /* determine the start of the metadata |
| * when no raid devices are defined use the default |
| * ...otherwise allow the metadata to truncate the value |
| * as is the case with older versions of imsm |
| */ |
| if (memberships) { |
| struct extent *last = &rv[memberships - 1]; |
| unsigned long long remainder; |
| |
| remainder = total_blocks(&dl->disk) - (last->start + last->size); |
| /* round down to 1k block to satisfy precision of the kernel |
| * 'size' interface |
| */ |
| remainder &= ~1UL; |
| /* make sure remainder is still sane */ |
| if (remainder < (unsigned)ROUND_UP(super->len, 512) >> 9) |
| remainder = ROUND_UP(super->len, 512) >> 9; |
| if (reservation > remainder) |
| reservation = remainder; |
| } |
| e->start = total_blocks(&dl->disk) - reservation; |
| e->size = 0; |
| return rv; |
| } |
| |
| /* try to determine how much space is reserved for metadata from |
| * the last get_extents() entry, otherwise fallback to the |
| * default |
| */ |
| static __u32 imsm_reserved_sectors(struct intel_super *super, struct dl *dl) |
| { |
| struct extent *e; |
| int i; |
| __u32 rv; |
| |
| /* for spares just return a minimal reservation which will grow |
| * once the spare is picked up by an array |
| */ |
| if (dl->index == -1) |
| return MPB_SECTOR_CNT; |
| |
| e = get_extents(super, dl, 0); |
| if (!e) |
| return MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; |
| |
| /* scroll to last entry */ |
| for (i = 0; e[i].size; i++) |
| continue; |
| |
| rv = total_blocks(&dl->disk) - e[i].start; |
| |
| free(e); |
| |
| return rv; |
| } |
| |
| static int is_spare(struct imsm_disk *disk) |
| { |
| return (disk->status & SPARE_DISK) == SPARE_DISK; |
| } |
| |
| static int is_configured(struct imsm_disk *disk) |
| { |
| return (disk->status & CONFIGURED_DISK) == CONFIGURED_DISK; |
| } |
| |
| static int is_failed(struct imsm_disk *disk) |
| { |
| return (disk->status & FAILED_DISK) == FAILED_DISK; |
| } |
| |
| static int is_journal(struct imsm_disk *disk) |
| { |
| return (disk->status & JOURNAL_DISK) == JOURNAL_DISK; |
| } |
| |
| /* round array size down to closest MB and ensure it splits evenly |
| * between members |
| */ |
| static unsigned long long round_size_to_mb(unsigned long long size, unsigned int |
| disk_count) |
| { |
| size /= disk_count; |
| size = (size >> SECT_PER_MB_SHIFT) << SECT_PER_MB_SHIFT; |
| size *= disk_count; |
| |
| return size; |
| } |
| |
| static int able_to_resync(int raid_level, int missing_disks) |
| { |
| int max_missing_disks = 0; |
| |
| switch (raid_level) { |
| case 10: |
| max_missing_disks = 1; |
| break; |
| default: |
| max_missing_disks = 0; |
| } |
| return missing_disks <= max_missing_disks; |
| } |
| |
| /* try to determine how much space is reserved for metadata from |
| * the last get_extents() entry on the smallest active disk, |
| * otherwise fallback to the default |
| */ |
| static __u32 imsm_min_reserved_sectors(struct intel_super *super) |
| { |
| struct extent *e; |
| int i; |
| unsigned long long min_active; |
| __u32 remainder; |
| __u32 rv = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; |
| struct dl *dl, *dl_min = NULL; |
| |
| if (!super) |
| return rv; |
| |
| min_active = 0; |
| for (dl = super->disks; dl; dl = dl->next) { |
| if (dl->index < 0) |
| continue; |
| unsigned long long blocks = total_blocks(&dl->disk); |
| if (blocks < min_active || min_active == 0) { |
| dl_min = dl; |
| min_active = blocks; |
| } |
| } |
| if (!dl_min) |
| return rv; |
| |
| /* find last lba used by subarrays on the smallest active disk */ |
| e = get_extents(super, dl_min, 0); |
| if (!e) |
| return rv; |
| for (i = 0; e[i].size; i++) |
| continue; |
| |
| remainder = min_active - e[i].start; |
| free(e); |
| |
| /* to give priority to recovery we should not require full |
| IMSM_RESERVED_SECTORS from the spare */ |
| rv = MPB_SECTOR_CNT + NUM_BLOCKS_DIRTY_STRIPE_REGION; |
| |
| /* if real reservation is smaller use that value */ |
| return (remainder < rv) ? remainder : rv; |
| } |
| |
| /* |
| * Return minimum size of a spare and sector size |
| * that can be used in this array |
| */ |
| int get_spare_criteria_imsm(struct supertype *st, struct spare_criteria *c) |
| { |
| struct intel_super *super = st->sb; |
| struct dl *dl; |
| struct extent *e; |
| int i; |
| unsigned long long size = 0; |
| |
| c->min_size = 0; |
| c->sector_size = 0; |
| |
| if (!super) |
| return -EINVAL; |
| /* find first active disk in array */ |
| dl = super->disks; |
| while (dl && (is_failed(&dl->disk) || dl->index == -1)) |
| dl = dl->next; |
| if (!dl) |
| return -EINVAL; |
| /* find last lba used by subarrays */ |
| e = get_extents(super, dl, 0); |
| if (!e) |
| return -EINVAL; |
| for (i = 0; e[i].size; i++) |
| continue; |
| if (i > 0) |
| size = e[i-1].start + e[i-1].size; |
| free(e); |
| |
| /* add the amount of space needed for metadata */ |
| size += imsm_min_reserved_sectors(super); |
| |
| c->min_size = size * 512; |
| c->sector_size = super->sector_size; |
| |
| return 0; |
| } |
| |
| static int is_gen_migration(struct imsm_dev *dev); |
| |
| #define IMSM_4K_DIV 8 |
| |
| static __u64 blocks_per_migr_unit(struct intel_super *super, |
| struct imsm_dev *dev); |
| |
| static void print_imsm_dev(struct intel_super *super, |
| struct imsm_dev *dev, |
| char *uuid, |
| int disk_idx) |
| { |
| __u64 sz; |
| int slot, i; |
| struct imsm_map *map = get_imsm_map(dev, MAP_0); |
| struct imsm_map *map2 = get_imsm_map(dev, MAP_1); |
| __u32 ord; |
| |
| printf("\n"); |
| printf("[%.16s]:\n", dev->volume); |
| printf(" Subarray : %d\n", super->current_vol); |
| printf(" UUID : %s\n", uuid); |
| printf(" RAID Level : %d", get_imsm_raid_level(map)); |
| if (map2) |
| printf(" <-- %d", get_imsm_raid_level(map2)); |
| printf("\n"); |
| printf(" Members : %d", map->num_members); |
| if (map2) |
| printf(" <-- %d", map2->num_members); |
| printf("\n"); |
| printf(" Slots : ["); |
| for (i = 0; i < map->num_members; i++) { |
| ord = get_imsm_ord_tbl_ent(dev, i, MAP_0); |
| printf("%s", ord & IMSM_ORD_REBUILD ? "_" : "U"); |
| } |
| printf("]"); |
| if (map2) { |
| printf(" <-- ["); |
| for (i = 0; i < map2->num_members; i++) { |
| ord = get_imsm_ord_tbl_ent(dev, i, MAP_1); |
| printf("%s", ord & IMSM_ORD_REBUILD ? "_" : "U"); |
| } |
| printf("]"); |
| } |
| printf("\n"); |
| printf(" Failed disk : "); |
| if (map->failed_disk_num == 0xff) |
| printf("none"); |
| else |
| printf("%i", map->failed_disk_num); |
| printf("\n"); |
| slot = get_imsm_disk_slot(map, disk_idx); |
| if (slot >= 0) { |
| ord = get_imsm_ord_tbl_ent(dev, slot, MAP_X); |
| printf(" This Slot : %d%s\n", slot, |
| ord & IMSM_ORD_REBUILD ? " (out-of-sync)" : ""); |
| } else |
| printf(" This Slot : ?\n"); |
| printf(" Sector Size : %u\n", super->sector_size); |
| sz = imsm_dev_size(dev); |
| printf(" Array Size : %llu%s\n", |
| (unsigned long long)sz * 512 / super->sector_size, |
| human_size(sz * 512)); |
| sz = blocks_per_member(map); |
| printf(" Per Dev Size : %llu%s\n", |
| (unsigned long long)sz * 512 / super->sector_size, |
| human_size(sz * 512)); |
| printf(" Sector Offset : %llu\n", |
| pba_of_lba0(map)); |
| printf(" Num Stripes : %llu\n", |
| num_data_stripes(map)); |
| printf(" Chunk Size : %u KiB", |
| __le16_to_cpu(map->blocks_per_strip) / 2); |
| if (map2) |
| printf(" <-- %u KiB", |
| __le16_to_cpu(map2->blocks_per_strip) / 2); |
| printf("\n"); |
| printf(" Reserved : %d\n", __le32_to_cpu(dev->reserved_blocks)); |
| printf(" Migrate State : "); |
| if (dev->vol.migr_state) { |
| if (migr_type(dev) == MIGR_INIT) |
| printf("initialize\n"); |
| else if (migr_type(dev) == MIGR_REBUILD) |
| printf("rebuild\n"); |
| else if (migr_type(dev) == MIGR_VERIFY) |
| printf("check\n"); |
| else if (migr_type(dev) == MIGR_GEN_MIGR) |
| printf("general migration\n"); |
| else if (migr_type(dev) == MIGR_STATE_CHANGE) |
| printf("state change\n"); |
| else if (migr_type(dev) == MIGR_REPAIR) |
| printf("repair\n"); |
| else |
| printf("<unknown:%d>\n", migr_type(dev)); |
| } else |
| printf("idle\n"); |
| printf(" Map State : %s", map_state_str[map->map_state]); |
| if (dev->vol.migr_state) { |
| struct imsm_map *map = get_imsm_map(dev, MAP_1); |
| |
| printf(" <-- %s", map_state_str[map->map_state]); |
| printf("\n Checkpoint : %llu ", vol_curr_migr_unit(dev)); |
| if (is_gen_migration(dev) && (slot > 1 || slot < 0)) |
| printf("(N/A)"); |
| else |
| printf("(%llu)", (unsigned long long) |
| blocks_per_migr_unit(super, dev)); |
| } |
| printf("\n"); |
| printf(" Dirty State : %s\n", (dev->vol.dirty & RAIDVOL_DIRTY) ? |
| "dirty" : "clean"); |
| printf(" RWH Policy : "); |
| if (dev->rwh_policy == RWH_OFF || dev->rwh_policy == RWH_MULTIPLE_OFF) |
| printf("off\n"); |
| else if (dev->rwh_policy == RWH_DISTRIBUTED) |
| printf("PPL distributed\n"); |
| else if (dev->rwh_policy == RWH_JOURNALING_DRIVE) |
| printf("PPL journaling drive\n"); |
| else if (dev->rwh_policy == RWH_MULTIPLE_DISTRIBUTED) |
| printf("Multiple distributed PPLs\n"); |
| else if (dev->rwh_policy == RWH_MULTIPLE_PPLS_JOURNALING_DRIVE) |
| printf("Multiple PPLs on journaling drive\n"); |
| else if (dev->rwh_policy == RWH_BITMAP) |
| printf("Write-intent bitmap\n"); |
| else |
| printf("<unknown:%d>\n", dev->rwh_policy); |
| |
| printf(" Volume ID : %u\n", dev->my_vol_raid_dev_num); |
| } |
| |
| static void print_imsm_disk(struct imsm_disk *disk, |
| int index, |
| __u32 reserved, |
| unsigned int sector_size) { |
| char str[MAX_RAID_SERIAL_LEN + 1]; |
| __u64 sz; |
| |
| if (index < -1 || !disk) |
| return; |
| |
| printf("\n"); |
| snprintf(str, MAX_RAID_SERIAL_LEN + 1, "%s", disk->serial); |
| if (index >= 0) |
| printf(" Disk%02d Serial : %s\n", index, str); |
| else |
| printf(" Disk Serial : %s\n", str); |
| printf(" State :%s%s%s%s\n", is_spare(disk) ? " spare" : "", |
| is_configured(disk) ? " active" : "", |
| is_failed(disk) ? " failed" : "", |
| is_journal(disk) ? " journal" : ""); |
| printf(" Id : %08x\n", __le32_to_cpu(disk->scsi_id)); |
| sz = total_blocks(disk) - reserved; |
| printf(" Usable Size : %llu%s\n", |
| (unsigned long long)sz * 512 / sector_size, |
| human_size(sz * 512)); |
| } |
| |
| void convert_to_4k_imsm_migr_rec(struct intel_super *super) |
| { |
| struct migr_record *migr_rec = super->migr_rec; |
| |
| migr_rec->blocks_per_unit /= IMSM_4K_DIV; |
| migr_rec->dest_depth_per_unit /= IMSM_4K_DIV; |
| split_ull((join_u32(migr_rec->post_migr_vol_cap, |
| migr_rec->post_migr_vol_cap_hi) / IMSM_4K_DIV), |
| &migr_rec->post_migr_vol_cap, &migr_rec->post_migr_vol_cap_hi); |
| set_migr_chkp_area_pba(migr_rec, |
| migr_chkp_area_pba(migr_rec) / IMSM_4K_DIV); |
| set_migr_dest_1st_member_lba(migr_rec, |
| migr_dest_1st_member_lba(migr_rec) / IMSM_4K_DIV); |
| } |
| |
| void convert_to_4k_imsm_disk(struct imsm_disk *disk) |
| { |
| set_total_blocks(disk, (total_blocks(disk)/IMSM_4K_DIV)); |
| } |
| |
| void convert_to_4k(struct intel_super *super) |
| { |
| struct imsm_super *mpb = super->anchor; |
| struct imsm_disk *disk; |
| int i; |
| __u32 bbm_log_size = __le32_to_cpu(mpb->bbm_log_size); |
| |
| for (i = 0; i < mpb->num_disks ; i++) { |
| disk = __get_imsm_disk(mpb, i); |
| /* disk */ |
| convert_to_4k_imsm_disk(disk); |
| } |
| for (i = 0; i < mpb->num_raid_devs; i++) { |
| struct imsm_dev *dev = __get_imsm_dev(mpb, i); |
| struct imsm_map *map = get_imsm_map(dev, MAP_0); |
| /* dev */ |
| set_imsm_dev_size(dev, imsm_dev_size(dev)/IMSM_4K_DIV); |
| set_vol_curr_migr_unit(dev, |
| vol_curr_migr_unit(dev) / IMSM_4K_DIV); |
| |
| /* map0 */ |
| set_blocks_per_member(map, blocks_per_member(map)/IMSM_4K_DIV); |
| map->blocks_per_strip /= IMSM_4K_DIV; |
| set_pba_of_lba0(map, pba_of_lba0(map)/IMSM_4K_DIV); |
| |
| if (dev->vol.migr_state) { |
| /* map1 */ |
| map = get_imsm_map(dev, MAP_1); |
| set_blocks_per_member(map, |
| blocks_per_member(map)/IMSM_4K_DIV); |
| map->blocks_per_strip /= IMSM_4K_DIV; |
| set_pba_of_lba0(map, pba_of_lba0(map)/IMSM_4K_DIV); |
| } |
| } |
| if (bbm_log_size) { |
| struct bbm_log *log = (void *)mpb + |
| __le32_to_cpu(mpb->mpb_size) - bbm_log_size; |
| __u32 i; |
| |
| for (i = 0; i < log->entry_count; i++) { |
| struct bbm_log_entry *entry = |
| &log->marked_block_entries[i]; |
| |
| __u8 count = entry->marked_count + 1; |
| unsigned long long sector = |
| __le48_to_cpu(&entry->defective_block_start); |
| |
| entry->defective_block_start = |
| __cpu_to_le48(sector/IMSM_4K_DIV); |
| entry->marked_count = max(count/IMSM_4K_DIV, 1) - 1; |
| } |
| } |
| |
| mpb->check_sum = __gen_imsm_checksum(mpb); |
| } |
| |
| void examine_migr_rec_imsm(struct intel_super *super) |
| { |
| struct migr_record *migr_rec = super->migr_rec; |
| struct imsm_super *mpb = super->anchor; |
| int i; |
| |
| for (i = 0; i < mpb->num_raid_devs; i++) { |
| struct imsm_dev *dev = __get_imsm_dev(mpb, i); |
| struct imsm_map *map; |
| int slot = -1; |
| |
| if (is_gen_migration(dev) == 0) |
| continue; |
| |
| printf("\nMigration Record Information:"); |
| |
| /* first map under migration */ |
| map = get_imsm_map(dev, MAP_0); |
| if (map) |
| slot = get_imsm_disk_slot(map, super->disks->index); |
| if (map == NULL || slot > 1 || slot < 0) { |
| printf(" Empty\n "); |
| printf("Examine one of first two disks in array\n"); |
| break; |
| } |
| printf("\n Status : "); |
| if (__le32_to_cpu(migr_rec->rec_status) == UNIT_SRC_NORMAL) |
| printf("Normal\n"); |
| else |
| printf("Contains Data\n"); |
| printf(" Current Unit : %llu\n", |
| current_migr_unit(migr_rec)); |
| printf(" Family : %u\n", |
| __le32_to_cpu(migr_rec->family_num)); |
| printf(" Ascending : %u\n", |
| __le32_to_cpu(migr_rec->ascending_migr)); |
| printf(" Blocks Per Unit : %u\n", |
| __le32_to_cpu(migr_rec->blocks_per_unit)); |
| printf(" Dest. Depth Per Unit : %u\n", |
| __le32_to_cpu(migr_rec->dest_depth_per_unit)); |
| printf(" Checkpoint Area pba : %llu\n", |
| migr_chkp_area_pba(migr_rec)); |
| printf(" First member lba : %llu\n", |
| migr_dest_1st_member_lba(migr_rec)); |
| printf(" Total Number of Units : %llu\n", |
| get_num_migr_units(migr_rec)); |
| printf(" Size of volume : %llu\n", |
| join_u32(migr_rec->post_migr_vol_cap, |
| migr_rec->post_migr_vol_cap_hi)); |
| printf(" Record was read from : %u\n", |
| __le32_to_cpu(migr_rec->ckpt_read_disk_num)); |
| |
| break; |
| } |
| } |
| |
| void convert_from_4k_imsm_migr_rec(struct intel_super *super) |
| { |
| struct migr_record *migr_rec = super->migr_rec; |
| |
| migr_rec->blocks_per_unit *= IMSM_4K_DIV; |
| migr_rec->dest_depth_per_unit *= IMSM_4K_DIV; |
| split_ull((join_u32(migr_rec->post_migr_vol_cap, |
| migr_rec->post_migr_vol_cap_hi) * IMSM_4K_DIV), |
| &migr_rec->post_migr_vol_cap, |
| &migr_rec->post_migr_vol_cap_hi); |
| set_migr_chkp_area_pba(migr_rec, |
| migr_chkp_area_pba(migr_rec) * IMSM_4K_DIV); |
| set_migr_dest_1st_member_lba(migr_rec, |
| migr_dest_1st_member_lba(migr_rec) * IMSM_4K_DIV); |
| } |
| |
| void convert_from_4k(struct intel_super *super) |
| { |
| struct imsm_super *mpb = super->anchor; |
| struct imsm_disk *disk; |
| int i; |
| __u32 bbm_log_size = __le32_to_cpu(mpb->bbm_log_size); |
| |
| for (i = 0; i < mpb->num_disks ; i++) { |
| disk = __get_imsm_disk(mpb, i); |
| /* disk */ |
| set_total_blocks(disk, (total_blocks(disk)*IMSM_4K_DIV)); |
| } |
| |
| for (i = 0; i < mpb->num_raid_devs; i++) { |
| struct imsm_dev *dev = __get_imsm_dev(mpb, i); |
| struct imsm_map *map = get_imsm_map(dev, MAP_0); |
| /* dev */ |
| set_imsm_dev_size(dev, imsm_dev_size(dev)*IMSM_4K_DIV); |
| set_vol_curr_migr_unit(dev, |
| vol_curr_migr_unit(dev) * IMSM_4K_DIV); |
| |
| /* map0 */ |
| set_blocks_per_member(map, blocks_per_member(map)*IMSM_4K_DIV); |
| map->blocks_per_strip *= IMSM_4K_DIV; |
| set_pba_of_lba0(map, pba_of_lba0(map)*IMSM_4K_DIV); |
| |
| if (dev->vol.migr_state) { |
| /* map1 */ |
| map = get_imsm_map(dev, MAP_1); |
| set_blocks_per_member(map, |
| blocks_per_member(map)*IMSM_4K_DIV); |
| map->blocks_per_strip *= IMSM_4K_DIV; |
| set_pba_of_lba0(map, pba_of_lba0(map)*IMSM_4K_DIV); |
| } |
| } |
| if (bbm_log_size) { |
| struct bbm_log *log = (void *)mpb + |
| __le32_to_cpu(mpb->mpb_size) - bbm_log_size; |
| __u32 i; |
| |
| for (i = 0; i < log->entry_count; i++) { |
| struct bbm_log_entry *entry = |
| &log->marked_block_entries[i]; |
| |
| __u8 count = entry->marked_count + 1; |
| unsigned long long sector = |
| __le48_to_cpu(&entry->defective_block_start); |
| |
| entry->defective_block_start = |
| __cpu_to_le48(sector*IMSM_4K_DIV); |
| entry->marked_count = count*IMSM_4K_DIV - 1; |
| } |
| } |
| |
| mpb->check_sum = __gen_imsm_checksum(mpb); |
| } |
| |
| /******************************************************************************* |
| * function: imsm_check_attributes |
| * Description: Function checks if features represented by attributes flags |
| * are supported by mdadm. |
| * Parameters: |
| * attributes - Attributes read from metadata |
| * Returns: |
| * 0 - passed attributes contains unsupported features flags |
| * 1 - all features are supported |
| ******************************************************************************/ |
| static int imsm_check_attributes(__u32 attributes) |
| { |
| int ret_val = 1; |
| __u32 not_supported = MPB_ATTRIB_SUPPORTED^0xffffffff; |
| |
| not_supported &= ~MPB_ATTRIB_IGNORED; |
| |
| not_supported &= attributes; |
| if (not_supported) { |
| pr_err("(IMSM): Unsupported attributes : %x\n", |
| (unsigned)__le32_to_cpu(not_supported)); |
| if (not_supported & MPB_ATTRIB_CHECKSUM_VERIFY) { |
| dprintf("\t\tMPB_ATTRIB_CHECKSUM_VERIFY \n"); |
| not_supported ^= MPB_ATTRIB_CHECKSUM_VERIFY; |
| } |
| if (not_supported & MPB_ATTRIB_2TB) { |
| dprintf("\t\tMPB_ATTRIB_2TB\n"); |
| not_supported ^= MPB_ATTRIB_2TB; |
| } |
| if (not_supported & MPB_ATTRIB_RAID0) { |
| dprintf("\t\tMPB_ATTRIB_RAID0\n"); |
| not_supported ^= MPB_ATTRIB_RAID0; |
| } |
| if (not_supported & MPB_ATTRIB_RAID1) { |
| dprintf("\t\tMPB_ATTRIB_RAID1\n"); |
| not_supported ^= MPB_ATTRIB_RAID1; |
| } |
| if (not_supported & MPB_ATTRIB_RAID10) { |
| dprintf("\t\tMPB_ATTRIB_RAID10\n"); |
| not_supported ^= MPB_ATTRIB_RAID10; |
| } |
| if (not_supported & MPB_ATTRIB_RAID1E) { |
| dprintf("\t\tMPB_ATTRIB_RAID1E\n"); |
| not_supported ^= MPB_ATTRIB_RAID1E; |
| } |
| if (not_supported & MPB_ATTRIB_RAID5) { |
| dprintf("\t\tMPB_ATTRIB_RAID5\n"); |
| not_supported ^= MPB_ATTRIB_RAID5; |
| } |
| if (not_supported & MPB_ATTRIB_RAIDCNG) { |
| dprintf("\t\tMPB_ATTRIB_RAIDCNG\n"); |
| not_supported ^= MPB_ATTRIB_RAIDCNG; |
| } |
| if (not_supported & MPB_ATTRIB_BBM) { |
| dprintf("\t\tMPB_ATTRIB_BBM\n"); |
| not_supported ^= MPB_ATTRIB_BBM; |
| } |
| if (not_supported & MPB_ATTRIB_CHECKSUM_VERIFY) { |
| dprintf("\t\tMPB_ATTRIB_CHECKSUM_VERIFY (== MPB_ATTRIB_LEGACY)\n"); |
| not_supported ^= MPB_ATTRIB_CHECKSUM_VERIFY; |
| } |
| if (not_supported & MPB_ATTRIB_EXP_STRIPE_SIZE) { |
| dprintf("\t\tMPB_ATTRIB_EXP_STRIP_SIZE\n"); |
| not_supported ^= MPB_ATTRIB_EXP_STRIPE_SIZE; |
| } |
| if (not_supported & MPB_ATTRIB_2TB_DISK) { |
| dprintf("\t\tMPB_ATTRIB_2TB_DISK\n"); |
| not_supported ^= MPB_ATTRIB_2TB_DISK; |
| } |
| if (not_supported & MPB_ATTRIB_NEVER_USE2) { |
| dprintf("\t\tMPB_ATTRIB_NEVER_USE2\n"); |
| not_supported ^= MPB_ATTRIB_NEVER_USE2; |
| } |
| if (not_supported & MPB_ATTRIB_NEVER_USE) { |
| dprintf("\t\tMPB_ATTRIB_NEVER_USE\n"); |
| not_supported ^= MPB_ATTRIB_NEVER_USE; |
| } |
| |
| if (not_supported) |
| dprintf("(IMSM): Unknown attributes : %x\n", not_supported); |
| |
| ret_val = 0; |
| } |
| |
| return ret_val; |
| } |
| |
| static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info, char *map); |
| |
| static void examine_super_imsm(struct supertype *st, char *homehost) |
| { |
| struct intel_super *super = st->sb; |
| struct imsm_super *mpb = super->anchor; |
| char str[MAX_SIGNATURE_LENGTH]; |
| int i; |
| struct mdinfo info; |
| char nbuf[64]; |
| __u32 sum; |
| __u32 reserved = imsm_reserved_sectors(super, super->disks); |
| struct dl *dl; |
| time_t creation_time; |
| |
| strncpy(str, (char *)mpb->sig, MPB_SIG_LEN); |
| str[MPB_SIG_LEN-1] = '\0'; |
| printf(" Magic : %s\n", str); |
| printf(" Version : %s\n", get_imsm_version(mpb)); |
| printf(" Orig Family : %08x\n", __le32_to_cpu(mpb->orig_family_num)); |
| printf(" Family : %08x\n", __le32_to_cpu(mpb->family_num)); |
| printf(" Generation : %08x\n", __le32_to_cpu(mpb->generation_num)); |
| creation_time = __le64_to_cpu(mpb->creation_time); |
| printf(" Creation Time : %.24s\n", |
| creation_time ? ctime(&creation_time) : "Unknown"); |
| printf(" Attributes : "); |
| if (imsm_check_attributes(mpb->attributes)) |
| printf("All supported\n"); |
| else |
| printf("not supported\n"); |
| getinfo_super_imsm(st, &info, NULL); |
| fname_from_uuid(st, &info, nbuf, ':'); |
| printf(" UUID : %s\n", nbuf + 5); |
| sum = __le32_to_cpu(mpb->check_sum); |
| printf(" Checksum : %08x %s\n", sum, |
| __gen_imsm_checksum(mpb) == sum ? "correct" : "incorrect"); |
| printf(" MPB Sectors : %d\n", mpb_sectors(mpb, super->sector_size)); |
| printf(" Disks : %d\n", mpb->num_disks); |
| printf(" RAID Devices : %d\n", mpb->num_raid_devs); |
| print_imsm_disk(__get_imsm_disk(mpb, super->disks->index), |
| super->disks->index, reserved, super->sector_size); |
| if (get_imsm_bbm_log_size(super->bbm_log)) { |
| struct bbm_log *log = super->bbm_log; |
| |
| printf("\n"); |
| printf("Bad Block Management Log:\n"); |
| printf(" Log Size : %d\n", __le32_to_cpu(mpb->bbm_log_size)); |
| printf(" Signature : %x\n", __le32_to_cpu(log->signature)); |
| printf(" Entry Count : %d\n", __le32_to_cpu(log->entry_count)); |
| } |
| for (i = 0; i < mpb->num_raid_devs; i++) { |
| struct mdinfo info; |
| struct imsm_dev *dev = __get_imsm_dev(mpb, i); |
| |
| super->current_vol = i; |
| getinfo_super_imsm(st, &info, NULL); |
| fname_from_uuid(st, &info, nbuf, ':'); |
| print_imsm_dev(super, dev, nbuf + 5, super->disks->index); |
| } |
| for (i = 0; i < mpb->num_disks; i++) { |
| if (i == super->disks->index) |
| continue; |
| print_imsm_disk(__get_imsm_disk(mpb, i), i, reserved, |
| super->sector_size); |
| } |
| |
| for (dl = super->disks; dl; dl = dl->next) |
| if (dl->index == -1) |
| print_imsm_disk(&dl->disk, -1, reserved, |
| super->sector_size); |
| |
| examine_migr_rec_imsm(super); |
| } |
| |
| static void brief_examine_super_imsm(struct supertype *st, int verbose) |
| { |
| /* We just write a generic IMSM ARRAY entry */ |
| struct mdinfo info; |
| char nbuf[64]; |
| struct intel_super *super = st->sb; |
| |
| if (!super->anchor->num_raid_devs) { |
| printf("ARRAY metadata=imsm\n"); |
| return; |
| } |
| |
| getinfo_super_imsm(st, &info, NULL); |
| fname_from_uuid(st, &info, nbuf, ':'); |
| printf("ARRAY metadata=imsm UUID=%s\n", nbuf + 5); |
| } |
| |
| static void brief_examine_subarrays_imsm(struct supertype *st, int verbose) |
| { |
| /* We just write a generic IMSM ARRAY entry */ |
| struct mdinfo info; |
| char nbuf[64]; |
| char nbuf1[64]; |
| struct intel_super *super = st->sb; |
| int i; |
| |
| if (!super->anchor->num_raid_devs) |
| return; |
| |
| getinfo_super_imsm(st, &info, NULL); |
| fname_from_uuid(st, &info, nbuf, ':'); |
| for (i = 0; i < super->anchor->num_raid_devs; i++) { |
| struct imsm_dev *dev = get_imsm_dev(super, i); |
| |
| super->current_vol = i; |
| getinfo_super_imsm(st, &info, NULL); |
| fname_from_uuid(st, &info, nbuf1, ':'); |
| printf("ARRAY /dev/md/%.16s container=%s member=%d UUID=%s\n", |
| dev->volume, nbuf + 5, i, nbuf1 + 5); |
| } |
| } |
| |
| static void export_examine_super_imsm(struct supertype *st) |
| { |
| struct intel_super *super = st->sb; |
| struct imsm_super *mpb = super->anchor; |
| struct mdinfo info; |
| char nbuf[64]; |
| |
| getinfo_super_imsm(st, &info, NULL); |
| fname_from_uuid(st, &info, nbuf, ':'); |
| printf("MD_METADATA=imsm\n"); |
| printf("MD_LEVEL=container\n"); |
| printf("MD_UUID=%s\n", nbuf+5); |
| printf("MD_DEVICES=%u\n", mpb->num_disks); |
| printf("MD_CREATION_TIME=%llu\n", __le64_to_cpu(mpb->creation_time)); |
| } |
| |
| static void detail_super_imsm(struct supertype *st, char *homehost, |
| char *subarray) |
| { |
| struct mdinfo info; |
| char nbuf[64]; |
| struct intel_super *super = st->sb; |
| int temp_vol = super->current_vol; |
| |
| if (subarray) |
| super->current_vol = strtoul(subarray, NULL, 10); |
| |
| getinfo_super_imsm(st, &info, NULL); |
| fname_from_uuid(st, &info, nbuf, ':'); |
| printf("\n UUID : %s\n", nbuf + 5); |
| |
| super->current_vol = temp_vol; |
| } |
| |
| static void brief_detail_super_imsm(struct supertype *st, char *subarray) |
| { |
| struct mdinfo info; |
| char nbuf[64]; |
| struct intel_super *super = st->sb; |
| int temp_vol = super->current_vol; |
| |
| if (subarray) |
| super->current_vol = strtoul(subarray, NULL, 10); |
| |
| getinfo_super_imsm(st, &info, NULL); |
| fname_from_uuid(st, &info, nbuf, ':'); |
| printf(" UUID=%s", nbuf + 5); |
| |
| super->current_vol = temp_vol; |
| } |
| |
| static int imsm_read_serial(int fd, char *devname, __u8 *serial, |
| size_t serial_buf_len); |
| static void fd2devname(int fd, char *name); |
| |
| static int ahci_enumerate_ports(const char *hba_path, int port_count, int host_base, int verbose) |
| { |
| /* dump an unsorted list of devices attached to AHCI Intel storage |
| * controller, as well as non-connected ports |
| */ |
| int hba_len = strlen(hba_path) + 1; |
| struct dirent *ent; |
| DIR *dir; |
| char *path = NULL; |
| int err = 0; |
| unsigned long port_mask = (1 << port_count) - 1; |
| |
| if (port_count > (int)sizeof(port_mask) * 8) { |
| if (verbose > 0) |
| pr_err("port_count %d out of range\n", port_count); |
| return 2; |
| } |
| |
| /* scroll through /sys/dev/block looking for devices attached to |
| * this hba |
| */ |
| dir = opendir("/sys/dev/block"); |
| if (!dir) |
| return 1; |
| |
| for (ent = readdir(dir); ent; ent = readdir(dir)) { |
| int fd; |
| char model[64]; |
| char vendor[64]; |
| char buf[1024]; |
| int major, minor; |
| char *device; |
| char *c; |
| int port; |
| int type; |
| |
| if (sscanf(ent->d_name, "%d:%d", &major, &minor) != 2) |
| continue; |
| path = devt_to_devpath(makedev(major, minor)); |
| if (!path) |
| continue; |
| if (!path_attached_to_hba(path, hba_path)) { |
| free(path); |
| path = NULL; |
| continue; |
| } |
| |
| /* retrieve the scsi device type */ |
| if (asprintf(&device, "/sys/dev/block/%d:%d/device/xxxxxxx", major, minor) < 0) { |
| if (verbose > 0) |
| pr_err("failed to allocate 'device'\n"); |
| err = 2; |
| break; |
| } |
| sprintf(device, "/sys/dev/block/%d:%d/device/type", major, minor); |
| if (load_sys(device, buf, sizeof(buf)) != 0) { |
| if (verbose > 0) |
| pr_err("failed to read device type for %s\n", |
| path); |
| err = 2; |
| free(device); |
| break; |
| } |
| type = strtoul(buf, NULL, 10); |
| |
| /* if it's not a disk print the vendor and model */ |
| if (!(type == 0 || type == 7 || type == 14)) { |
| vendor[0] = '\0'; |
| model[0] = '\0'; |
| sprintf(device, "/sys/dev/block/%d:%d/device/vendor", major, minor); |
| if (load_sys(device, buf, sizeof(buf)) == 0) { |
| strncpy(vendor, buf, sizeof(vendor)); |
| vendor[sizeof(vendor) - 1] = '\0'; |
| c = (char *) &vendor[sizeof(vendor) - 1]; |
| while (isspace(*c) || *c == '\0') |
| *c-- = '\0'; |
| |
| } |
| sprintf(device, "/sys/dev/block/%d:%d/device/model", major, minor); |
| if (load_sys(device, buf, sizeof(buf)) == 0) { |
| strncpy(model, buf, sizeof(model)); |
| model[sizeof(model) - 1] = '\0'; |
| c = (char *) &model[sizeof(model) - 1]; |
| while (isspace(*c) || *c == '\0') |
| *c-- = '\0'; |
| } |
| |
| if (vendor[0] && model[0]) |
| sprintf(buf, "%.64s %.64s", vendor, model); |
| else |
| switch (type) { /* numbers from hald/linux/device.c */ |
| case 1: sprintf(buf, "tape"); break; |
| case 2: sprintf(buf, "printer"); break; |
| case 3: sprintf(buf, "processor"); break; |
| case 4: |
| case 5: sprintf(buf, "cdrom"); break; |
| case 6: sprintf(buf, "scanner"); break; |
| case 8: sprintf(buf, "media_changer"); break; |
| case 9: sprintf(buf, "comm"); break; |
| case 12: sprintf(buf, "raid"); break; |
| default: sprintf(buf, "unknown"); |
| } |
| } else |
| buf[0] = '\0'; |
| free(device); |
| |
| /* chop device path to 'host%d' and calculate the port number */ |
| c = strchr(&path[hba_len], '/'); |
| if (!c) { |
| if (verbose > 0) |
| pr_err("%s - invalid path name\n", path + hba_len); |
| err = 2; |
| break; |
| } |
| *c = '\0'; |
| if ((sscanf(&path[hba_len], "ata%d", &port) == 1) || |
| ((sscanf(&path[hba_len], "host%d", &port) == 1))) |
| port -= host_base; |
| else { |
| if (verbose > 0) { |
| *c = '/'; /* repair the full string */ |
| pr_err("failed to determine port number for %s\n", |
| path); |
| } |
| err = 2; |
| break; |
| } |
| |
| /* mark this port as used */ |
| port_mask &= ~(1 << port); |
| |
| /* print out the device information */ |
| if (buf[0]) { |
| printf(" Port%d : - non-disk device (%s) -\n", port, buf); |
| continue; |
| } |
| |
| fd = dev_open(ent->d_name, O_RDONLY); |
| if (fd < 0) |
| printf(" Port%d : - disk info unavailable -\n", port); |
| else { |
| fd2devname(fd, buf); |
| printf(" Port%d : %s", port, buf); |
| if (imsm_read_serial(fd, NULL, (__u8 *)buf, |
| sizeof(buf)) == 0) |
| printf(" (%s)\n", buf); |
| else |
| printf(" ()\n"); |
| close(fd); |
| } |
| free(path); |
| path = NULL; |
| } |
| if (path) |
| free(path); |
| if (dir) |
| closedir(dir); |
| if (err == 0) { |
| int i; |
| |
| for (i = 0; i < port_count; i++) |
| if (port_mask & (1 << i)) |
| printf(" Port%d : - no device attached -\n", i); |
| } |
| |
| return err; |
| } |
| |
| static int print_nvme_info(struct sys_dev *hba) |
| { |
| char buf[1024]; |
| char *device_path; |
| struct dirent *ent; |
| DIR *dir; |
| int fd; |
| |
| dir = opendir("/sys/block/"); |
| if (!dir) |
| return 1; |
| |
| for (ent = readdir(dir); ent; ent = readdir(dir)) { |
| if (strstr(ent->d_name, "nvme")) { |
| fd = open_dev(ent->d_name); |
| if (fd < 0) |
| continue; |
| |
| if (!imsm_is_nvme_supported(fd, 0)) { |
| if (fd >= 0) |
| close(fd); |
| continue; |
| } |
| |
| device_path = diskfd_to_devpath(fd); |
| if (!device_path) { |
| close(fd); |
| continue; |
| } |
| |
| if (path_attached_to_hba(device_path, hba->path)) { |
| fd2devname(fd, buf); |
| if (hba->type == SYS_DEV_VMD) |
| printf(" NVMe under VMD : %s", buf); |
| else if (hba->type == SYS_DEV_NVME) |
| printf(" NVMe Device : %s", buf); |
| if (!imsm_read_serial(fd, NULL, (__u8 *)buf, |
| sizeof(buf))) |
| printf(" (%s)\n", buf); |
| else |
| printf("()\n"); |
| } |
| free(device_path); |
| close(fd); |
| } |
| } |
| |
| closedir(dir); |
| return 0; |
| } |
| |
| static void print_found_intel_controllers(struct sys_dev *elem) |
| { |
| for (; elem; elem = elem->next) { |
| pr_err("found Intel(R) "); |
| if (elem->type == SYS_DEV_SATA) |
| fprintf(stderr, "SATA "); |
| else if (elem->type == SYS_DEV_SAS) |
| fprintf(stderr, "SAS "); |
| else if (elem->type == SYS_DEV_NVME) |
| fprintf(stderr, "NVMe "); |
| |
| if (elem->type == SYS_DEV_VMD) |
| fprintf(stderr, "VMD domain"); |
| else |
| fprintf(stderr, "RAID controller"); |
| |
| if (elem->pci_id) |
| fprintf(stderr, " at %s", elem->pci_id); |
| fprintf(stderr, ".\n"); |
| } |
| fflush(stderr); |
| } |
| |
| static int ahci_get_port_count(const char *hba_path, int *port_count) |
| { |
| struct dirent *ent; |
| DIR *dir; |
| int host_base = -1; |
| |
| *port_count = 0; |
| if ((dir = opendir(hba_path)) == NULL) |
| return -1; |
| |
| for (ent = readdir(dir); ent; ent = readdir(dir)) { |
| int host; |
| |
| if ((sscanf(ent->d_name, "ata%d", &host) != 1) && |
| ((sscanf(ent->d_name, "host%d", &host) != 1))) |
| continue; |
| if (*port_count == 0) |
| host_base = host; |
| else if (host < host_base) |
| host_base = host; |
| |
| if (host + 1 > *port_count + host_base) |
| *port_count = host + 1 - host_base; |
| } |
| closedir(dir); |
| return host_base; |
| } |
| |
| static void print_imsm_capability(const struct imsm_orom *orom) |
| { |
| printf(" Platform : Intel(R) "); |
| if (orom->capabilities == 0 && orom->driver_features == 0) |
| printf("Matrix Storage Manager\n"); |
| else if (imsm_orom_is_enterprise(orom) && orom->major_ver >= 6) |
| printf("Virtual RAID on CPU\n"); |
| else |
| printf("Rapid Storage Technology%s\n", |
| imsm_orom_is_enterprise(orom) ? " enterprise" : ""); |
| if (orom->major_ver || orom->minor_ver || orom->hotfix_ver || orom->build) |
| printf(" Version : %d.%d.%d.%d\n", orom->major_ver, |
| orom->minor_ver, orom->hotfix_ver, orom->build); |
| printf(" RAID Levels :%s%s%s%s%s\n", |
| imsm_orom_has_raid0(orom) ? " raid0" : "", |
| imsm_orom_has_raid1(orom) ? " raid1" : "", |
| imsm_orom_has_raid1e(orom) ? " raid1e" : "", |
| imsm_orom_has_raid10(orom) ? " raid10" : "", |
| imsm_orom_has_raid5(orom) ? " raid5" : ""); |
| printf(" Chunk Sizes :%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n", |
| imsm_orom_has_chunk(orom, 2) ? " 2k" : "", |
| imsm_orom_has_chunk(orom, 4) ? " 4k" : "", |
| imsm_orom_has_chunk(orom, 8) ? " 8k" : "", |
| imsm_orom_has_chunk(orom, 16) ? " 16k" : "", |
| imsm_orom_has_chunk(orom, 32) ? " 32k" : "", |
| imsm_orom_has_chunk(orom, 64) ? " 64k" : "", |
| imsm_orom_has_chunk(orom, 128) ? " 128k" : "", |
| imsm_orom_has_chunk(orom, 256) ? " 256k" : "", |
| imsm_orom_has_chunk(orom, 512) ? " 512k" : "", |
| imsm_orom_has_chunk(orom, 1024*1) ? " 1M" : "", |
| imsm_orom_has_chunk(orom, 1024*2) ? " 2M" : "", |
| imsm_orom_has_chunk(orom, 1024*4) ? " 4M" : "", |
| imsm_orom_has_chunk(orom, 1024*8) ? " 8M" : "", |
| imsm_orom_has_chunk(orom, 1024*16) ? " 16M" : "", |
| imsm_orom_has_chunk(orom, 1024*32) ? " 32M" : "", |
| imsm_orom_has_chunk(orom, 1024*64) ? " 64M" : ""); |
| printf(" 2TB volumes :%s supported\n", |
| (orom->attr & IMSM_OROM_ATTR_2TB)?"":" not"); |
| printf(" 2TB disks :%s supported\n", |
| (orom->attr & IMSM_OROM_ATTR_2TB_DISK)?"":" not"); |
| printf(" Max Disks : %d\n", orom->tds); |
| printf(" Max Volumes : %d per array, %d per %s\n", |
| orom->vpa, orom->vphba, |
| imsm_orom_is_nvme(orom) ? "platform" : "controller"); |
| return; |
| } |
| |
| static void print_imsm_capability_export(const struct imsm_orom *orom) |
| { |
| printf("MD_FIRMWARE_TYPE=imsm\n"); |
| if (orom->major_ver || orom->minor_ver || orom->hotfix_ver || orom->build) |
| printf("IMSM_VERSION=%d.%d.%d.%d\n", orom->major_ver, orom->minor_ver, |
| orom->hotfix_ver, orom->build); |
| printf("IMSM_SUPPORTED_RAID_LEVELS=%s%s%s%s%s\n", |
| imsm_orom_has_raid0(orom) ? "raid0 " : "", |
| imsm_orom_has_raid1(orom) ? "raid1 " : "", |
| imsm_orom_has_raid1e(orom) ? "raid1e " : "", |
| imsm_orom_has_raid5(orom) ? "raid10 " : "", |
| imsm_orom_has_raid10(orom) ? "raid5 " : ""); |
| printf("IMSM_SUPPORTED_CHUNK_SIZES=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n", |
| imsm_orom_has_chunk(orom, 2) ? "2k " : "", |
| imsm_orom_has_chunk(orom, 4) ? "4k " : "", |
| imsm_orom_has_chunk(orom, 8) ? "8k " : "", |
| imsm_orom_has_chunk(orom, 16) ? "16k " : "", |
| imsm_orom_has_chunk(orom, 32) ? "32k " : "", |
| imsm_orom_has_chunk(orom, 64) ? "64k " : "", |
| imsm_orom_has_chunk(orom, 128) ? "128k " : "", |
| imsm_orom_has_chunk(orom, 256) ? "256k " : "", |
| imsm_orom_has_chunk(orom, 512) ? "512k " : "", |
| imsm_orom_has_chunk(orom, 1024*1) ? "1M " : "", |
| imsm_orom_has_chunk(orom, 1024*2) ? "2M " : "", |
| imsm_orom_has_chunk(orom, 1024*4) ? "4M " : "", |
| imsm_orom_has_chunk(orom, 1024*8) ? "8M " : "", |
| imsm_orom_has_chunk(orom, 1024*16) ? "16M " : "", |
| imsm_orom_has_chunk(orom, 1024*32) ? "32M " : "", |
| imsm_orom_has_chunk(orom, 1024*64) ? "64M " : ""); |
| printf("IMSM_2TB_VOLUMES=%s\n",(orom->attr & IMSM_OROM_ATTR_2TB) ? "yes" : "no"); |
| printf("IMSM_2TB_DISKS=%s\n",(orom->attr & IMSM_OROM_ATTR_2TB_DISK) ? "yes" : "no"); |
| printf("IMSM_MAX_DISKS=%d\n",orom->tds); |
| printf("IMSM_MAX_VOLUMES_PER_ARRAY=%d\n",orom->vpa); |
| printf("IMSM_MAX_VOLUMES_PER_CONTROLLER=%d\n",orom->vphba); |
| } |
| |
| static int detail_platform_imsm(int verbose, int enumerate_only, char *controller_path) |
| { |
| /* There are two components to imsm platform support, the ahci SATA |
| * controller and the option-rom. To find the SATA controller we |
| * simply look in /sys/bus/pci/drivers/ahci to see if an ahci |
| * controller with the Intel vendor id is present. This approach |
| * allows mdadm to leverage the kernel's ahci detection logic, with the |
| * caveat that if ahci.ko is not loaded mdadm will not be able to |
| * detect platform raid capabilities. The option-rom resides in a |
| * platform "Adapter ROM". We scan for its signature to retrieve the |
| * platform capabilities. If raid support is disabled in the BIOS the |
| * option-rom capability structure will not be available. |
| */ |
| struct sys_dev *list, *hba; |
| int host_base = 0; |
| int port_count = 0; |
| int result=1; |
| |
| if (enumerate_only) { |
| if (check_env("IMSM_NO_PLATFORM")) |
| return 0; |
| list = find_intel_devices(); |
| if (!list) |
| return 2; |
| for (hba = list; hba; hba = hba->next) { |
| if (find_imsm_capability(hba)) { |
| result = 0; |
| break; |
| } |
| else |
| result = 2; |
| } |
| return result; |
| } |
| |
| list = find_intel_devices(); |
| if (!list) { |
| if (verbose > 0) |
| pr_err("no active Intel(R) RAID controller found.\n"); |
| return 2; |
| } else if (verbose > 0) |
| print_found_intel_controllers(list); |
| |
| for (hba = list; hba; hba = hba->next) { |
| if (controller_path && (compare_paths(hba->path, controller_path) != 0)) |
| continue; |
| if (!find_imsm_capability(hba)) { |
| char buf[PATH_MAX]; |
| pr_err("imsm capabilities not found for controller: %s (type %s)\n", |
| hba->type == SYS_DEV_VMD ? vmd_domain_to_controller(hba, buf) : hba->path, |
| get_sys_dev_type(hba->type)); |
| continue; |
| } |
| result = 0; |
| } |
| |
| if (controller_path && result == 1) { |
| pr_err("no active Intel(R) RAID controller found under %s\n", |
| controller_path); |
| return result; |
| } |
| |
| const struct orom_entry *entry; |
| |
| for (entry = orom_entries; entry; entry = entry->next) { |
| if (entry->type == SYS_DEV_VMD) { |
| print_imsm_capability(&entry->orom); |
| printf(" 3rd party NVMe :%s supported\n", |
| imsm_orom_has_tpv_support(&entry->orom)?"":" not"); |
| for (hba = list; hba; hba = hba->next) { |
| if (hba->type == SYS_DEV_VMD) { |
| char buf[PATH_MAX]; |
| printf(" I/O Controller : %s (%s)\n", |
| vmd_domain_to_controller(hba, buf), get_sys_dev_type(hba->type)); |
| if (print_nvme_info(hba)) { |
| if (verbose > 0) |
| pr_err("failed to get devices attached to VMD domain.\n"); |
| result |= 2; |
| } |
| } |
| } |
| printf("\n"); |
| continue; |
| } |
| |
| print_imsm_capability(&entry->orom); |
| if (entry->type == SYS_DEV_NVME) { |
| for (hba = list; hba; hba = hba->next) { |
| if (hba->type == SYS_DEV_NVME) |
| print_nvme_info(hba); |
| } |
| printf("\n"); |
| continue; |
| } |
| |
| struct devid_list *devid; |
| for (devid = entry->devid_list; devid; devid = devid->next) { |
| hba = device_by_id(devid->devid); |
| if (!hba) |
| continue; |
| |
| printf(" I/O Controller : %s (%s)\n", |
| hba->path, get_sys_dev_type(hba->type)); |
| if (hba->type == SYS_DEV_SATA) { |
| host_base = ahci_get_port_count(hba->path, &port_count); |
| if (ahci_enumerate_ports(hba->path, port_count, host_base, verbose)) { |
| if (verbose > 0) |
| pr_err("failed to enumerate ports on SATA controller at %s.\n", hba->pci_id); |
| result |= 2; |
| } |
| } |
| } |
| printf("\n"); |
| } |
| |
| return result; |
| } |
| |
| static int export_detail_platform_imsm(int verbose, char *controller_path) |
| { |
| struct sys_dev *list, *hba; |
| int result=1; |
| |
| list = find_intel_devices(); |
| if (!list) { |
| if (verbose > 0) |
| pr_err("IMSM_DETAIL_PLATFORM_ERROR=NO_INTEL_DEVICES\n"); |
| result = 2; |
| return result; |
| } |
| |
| for (hba = list; hba; hba = hba->next) { |
| if (controller_path && (compare_paths(hba->path,controller_path) != 0)) |
| continue; |
| if (!find_imsm_capability(hba) && verbose > 0) { |
| char buf[PATH_MAX]; |
| pr_err("IMSM_DETAIL_PLATFORM_ERROR=NO_IMSM_CAPABLE_DEVICE_UNDER_%s\n", |
| hba->type == SYS_DEV_VMD ? vmd_domain_to_controller(hba, buf) : hba->path); |
| } |
| else |
| result = 0; |
| } |
| |
| const struct orom_entry *entry; |
| |
| for (entry = orom_entries; entry; entry = entry->next) { |
| if (entry->type == SYS_DEV_VMD) { |
| for (hba = list; hba; hba = hba->next) |
| print_imsm_capability_export(&entry->orom); |
| continue; |
| } |
| print_imsm_capability_export(&entry->orom); |
| } |
| |
| return result; |
| } |
| |
| static int match_home_imsm(struct supertype *st, char *homehost) |
| { |
| /* the imsm metadata format does not specify any host |
| * identification information. We return -1 since we can never |
| * confirm nor deny whether a given array is "meant" for this |
| * host. We rely on compare_super and the 'family_num' fields to |
| * exclude member disks that do not belong, and we rely on |
| * mdadm.conf to specify the arrays that should be assembled. |
| * Auto-assembly may still pick up "foreign" arrays. |
| */ |
| |
| return -1; |
| } |
| |
| static void uuid_from_super_imsm(struct supertype *st, int uuid[4]) |
| { |
| /* The uuid returned here is used for: |
| * uuid to put into bitmap file (Create, Grow) |
| * uuid for backup header when saving critical section (Grow) |
| * comparing uuids when re-adding a device into an array |
| * In these cases the uuid required is that of the data-array, |
| * not the device-set. |
| * uuid to recognise same set when adding a missing device back |
| * to an array. This is a uuid for the device-set. |
| * |
| * For each of these we can make do with a truncated |
| * or hashed uuid rather than the original, as long as |
| * everyone agrees. |
| * In each case the uuid required is that of the data-array, |
| * not the device-set. |
| */ |
| /* imsm does not track uuid's so we synthesis one using sha1 on |
| * - The signature (Which is constant for all imsm array, but no matter) |
| * - the orig_family_num of the container |
| * - the index number of the volume |
| * - the 'serial' number of the volume. |
| * Hopefully these are all constant. |
| */ |
| struct intel_super *super = st->sb; |
| |
| char buf[20]; |
| struct sha1_ctx ctx; |
| struct imsm_dev *dev = NULL; |
| __u32 family_num; |
| |
| /* some mdadm versions failed to set ->orig_family_num, in which |
| * case fall back to ->family_num. orig_family_num will be |
| * fixed up with the first metadata update. |
| */ |
| family_num = super->anchor->orig_family_num; |
| if (family_num == 0) |
| family_num = super->anchor->family_num; |
| sha1_init_ctx(&ctx); |
| sha1_process_bytes(super->anchor->sig, MPB_SIG_LEN, &ctx); |
| sha1_process_bytes(&family_num, sizeof(__u32), &ctx); |
| if (super->current_vol >= 0) |
| dev = get_imsm_dev(super, super->current_vol); |
| if (dev) { |
| __u32 vol = super->current_vol; |
| sha1_process_bytes(&vol, sizeof(vol), &ctx); |
| sha1_process_bytes(dev->volume, MAX_RAID_SERIAL_LEN, &ctx); |
| } |
| sha1_finish_ctx(&ctx, buf); |
| memcpy(uuid, buf, 4*4); |
| } |
| |
| #if 0 |
| static void |
| get_imsm_numerical_version(struct imsm_super *mpb, int *m, int *p) |
| { |
| __u8 *v = get_imsm_version(mpb); |
| __u8 *end = mpb->sig + MAX_SIGNATURE_LENGTH; |
| char major[] = { 0, 0, 0 }; |
| char minor[] = { 0 ,0, 0 }; |
| char patch[] = { 0, 0, 0 }; |
| char *ver_parse[] = { major, minor, patch }; |
| int i, j; |
| |
| i = j = 0; |
| while (*v != '\0' && v < end) { |
| if (*v != '.' && j < 2) |
| ver_parse[i][j++] = *v; |
| else { |
| i++; |
| j = 0; |
| } |
| v++; |
| } |
| |
| *m = strtol(minor, NULL, 0); |
| *p = strtol(patch, NULL, 0); |
| } |
| #endif |
| |
| static __u32 migr_strip_blocks_resync(struct imsm_dev *dev) |
| { |
| /* migr_strip_size when repairing or initializing parity */ |
| struct imsm_map *map = get_imsm_map(dev, MAP_0); |
| __u32 chunk = __le32_to_cpu(map->blocks_per_strip); |
| |
| switch (get_imsm_raid_level(map)) { |
| case 5: |
| case 10: |
| return chunk; |
| default: |
| return 128*1024 >> 9; |
| } |
| } |
| |
| static __u32 migr_strip_blocks_rebuild(struct imsm_dev *dev) |
| { |
| /* migr_strip_size when rebuilding a degraded disk, no idea why |
| * this is different than migr_strip_size_resync(), but it's good |
| * to be compatible |
| */ |
| struct imsm_map *map = get_imsm_map(dev, MAP_1); |
| __u32 chunk = __le32_to_cpu(map->blocks_per_strip); |
| |
| switch (get_imsm_raid_level(map)) { |
| case 1: |
| case 10: |
| if (map->num_members % map->num_domains == 0) |
| return 128*1024 >> 9; |
| else |
| return chunk; |
| case 5: |
| return max((__u32) 64*1024 >> 9, chunk); |
| default: |
| return 128*1024 >> 9; |
| } |
| } |
| |
| static __u32 num_stripes_per_unit_resync(struct imsm_dev *dev) |
| { |
| struct imsm_map *lo = get_imsm_map(dev, MAP_0); |
| struct imsm_map *hi = get_imsm_map(dev, MAP_1); |
| __u32 lo_chunk = __le32_to_cpu(lo->blocks_per_strip); |
| __u32 hi_chunk = __le32_to_cpu(hi->blocks_per_strip); |
| |
| return max((__u32) 1, hi_chunk / lo_chunk); |
| } |
| |
| static __u32 num_stripes_per_unit_rebuild(struct imsm_dev *dev) |
| { |
| struct imsm_map *lo = get_imsm_map(dev, MAP_0); |
| int level = get_imsm_raid_level(lo); |
| |
| if (level == 1 || level == 10) { |
| struct imsm_map *hi = get_imsm_map(dev, MAP_1); |
| |
| return hi->num_domains; |
| } else |
| return num_stripes_per_unit_resync(dev); |
| } |
| |
| static __u8 imsm_num_data_members(struct imsm_map *map) |
| { |
| /* named 'imsm_' because raid0, raid1 and raid10 |
| * counter-intuitively have the same number of data disks |
| */ |
| switch (get_imsm_raid_level(map)) { |
| case 0: |
| return map->num_members; |
| break; |
| case 1: |
| case 10: |
| return map->num_members/2; |
| case 5: |
| return map->num_members - 1; |
| default: |
| dprintf("unsupported raid level\n"); |
| return 0; |
| } |
| } |
| |
| static unsigned long long calc_component_size(struct imsm_map *map, |
| struct imsm_dev *dev) |
| { |
| unsigned long long component_size; |
| unsigned long long dev_size = imsm_dev_size(dev); |
| long long calc_dev_size = 0; |
| unsigned int member_disks = imsm_num_data_members(map); |
| |
| if (member_disks == 0) |
| return 0; |
| |
| component_size = per_dev_array_size(map); |
| calc_dev_size = component_size * member_disks; |
| |
| /* Component size is rounded to 1MB so difference between size from |
| * metadata and size calculated from num_data_stripes equals up to |
| * 2048 blocks per each device. If the difference is higher it means |
| * that array size was expanded and num_data_stripes was not updated. |
| */ |
| if (llabs(calc_dev_size - (long long)dev_size) > |
| (1 << SECT_PER_MB_SHIFT) * member_disks) { |
| component_size = dev_size / member_disks; |
| dprintf("Invalid num_data_stripes in metadata; expected=%llu, found=%llu\n", |
| component_size / map->blocks_per_strip, |
| num_data_stripes(map)); |
| } |
| |
| return component_size; |
| } |
| |
| static __u32 parity_segment_depth(struct imsm_dev *dev) |
| { |
| struct imsm_map *map = get_imsm_map(dev, MAP_0); |
| __u32 chunk = __le32_to_cpu(map->blocks_per_strip); |
| |
| switch(get_imsm_raid_level(map)) { |
| case 1: |
| case 10: |
| return chunk * map->num_domains; |
| case 5: |
| return chunk * map->num_members; |
| default: |
| return chunk; |
| } |
| } |
| |
| static __u32 map_migr_block(struct imsm_dev *dev, __u32 block) |
| { |
| struct imsm_map *map = get_imsm_map(dev, MAP_1); |
| __u32 chunk = __le32_to_cpu(map->blocks_per_strip); |
| __u32 strip = block / chunk; |
| |
| switch (get_imsm_raid_level(map)) { |
| case 1: |
| case 10: { |
| __u32 vol_strip = (strip * map->num_domains) + 1; |
| __u32 vol_stripe = vol_strip / map->num_members; |
| |
| return vol_stripe * chunk + block % chunk; |
| } case 5: { |
| __u32 stripe = strip / (map->num_members - 1); |
| |
| return stripe * chunk + block % chunk; |
| } |
| default: |
| return 0; |
| } |
| } |
| |
| static __u64 blocks_per_migr_unit(struct intel_super *super, |
| struct imsm_dev *dev) |
| { |
| /* calculate the conversion factor between per member 'blocks' |
| * (md/{resync,rebuild}_start) and imsm migration units, return |
| * 0 for the 'not migrating' and 'unsupported migration' cases |
| */ |
| if (!dev->vol.migr_state) |
| return 0; |
| |
| switch (migr_type(dev)) { |
| case MIGR_GEN_MIGR: { |
| struct migr_record *migr_rec = super->migr_rec; |
| return __le32_to_cpu(migr_rec->blocks_per_unit); |
| } |
| case MIGR_VERIFY: |
| case MIGR_REPAIR: |
| case MIGR_INIT: { |
| struct imsm_map *map = get_imsm_map(dev, MAP_0); |
| __u32 stripes_per_unit; |
| __u32 blocks_per_unit; |
| __u32 parity_depth; |
| __u32 migr_chunk; |
| __u32 block_map; |
| __u32 block_rel; |
| __u32 segment; |
| __u32 stripe; |
| __u8 disks; |
| |
| /* yes, this is really the translation of migr_units to |
| * per-member blocks in the 'resync' case |
| */ |
| stripes_per_unit = num_stripes_per_unit_resync(dev); |
| migr_chunk = migr_strip_blocks_resync(dev); |
| disks = imsm_num_data_members(map); |
| blocks_per_unit = stripes_per_unit * migr_chunk * disks; |
| stripe = __le16_to_cpu(map->blocks_per_strip) * disks; |
| segment = blocks_per_unit / stripe; |
| block_rel = blocks_per_unit - segment * stripe; |
| parity_depth = parity_segment_depth(dev); |
| block_map = map_migr_block(dev, block_rel); |
| return block_map + parity_depth * segment; |
| } |
| case MIGR_REBUILD: { |
| __u32 stripes_per_unit; |
| __u32 migr_chunk; |
| |
| stripes_per_unit = num_stripes_per_unit_rebuild(dev); |
| migr_chunk = migr_strip_blocks_rebuild(dev); |
| return migr_chunk * stripes_per_unit; |
| } |
| case MIGR_STATE_CHANGE: |
| default: |
| return 0; |
| } |
| } |
| |
| static int imsm_level_to_layout(int level) |
| { |
| switch (level) { |
| case 0: |
| case 1: |
| return 0; |
| case 5: |
| case 6: |
| return ALGORITHM_LEFT_ASYMMETRIC; |
| case 10: |
| return 0x102; |
| } |
| return UnSet; |
| } |
| |
| /******************************************************************************* |
| * Function: read_imsm_migr_rec |
| * Description: Function reads imsm migration record from last sector of disk |
| * Parameters: |
| * fd : disk descriptor |
| * super : metadata info |
| * Returns: |
| * 0 : success, |
| * -1 : fail |
| ******************************************************************************/ |
| static int read_imsm_migr_rec(int fd, struct intel_super *super) |
| { |
| int ret_val = -1; |
| unsigned int sector_size = super->sector_size; |
| unsigned long long dsize; |
| |
| get_dev_size(fd, NULL, &dsize); |
| if (lseek64(fd, dsize - (sector_size*MIGR_REC_SECTOR_POSITION), |
| SEEK_SET) < 0) { |
| pr_err("Cannot seek to anchor block: %s\n", |
| strerror(errno)); |
| goto out; |
| } |
| if ((unsigned int)read(fd, super->migr_rec_buf, |
| MIGR_REC_BUF_SECTORS*sector_size) != |
| MIGR_REC_BUF_SECTORS*sector_size) { |
| pr_err("Cannot read migr record block: %s\n", |
| strerror(errno)); |
| goto out; |
| } |
| ret_val = 0; |
| if (sector_size == 4096) |
| convert_from_4k_imsm_migr_rec(super); |
| |
| out: |
| return ret_val; |
| } |
| |
| static struct imsm_dev *imsm_get_device_during_migration( |
| struct intel_super *super) |
| { |
| |
| struct intel_dev *dv; |
| |
| for (dv = super->devlist; dv; dv = dv->next) { |
| if (is_gen_migration(dv->dev)) |
| return dv->dev; |
| } |
| return NULL; |
| } |
| |
| /******************************************************************************* |
| * Function: load_imsm_migr_rec |
| * Description: Function reads imsm migration record (it is stored at the last |
| * sector of disk) |
| * Parameters: |
| * super : imsm internal array info |
| * Returns: |
| * 0 : success |
| * -1 : fail |
| * -2 : no migration in progress |
| ******************************************************************************/ |
| static int load_imsm_migr_rec(struct intel_super *super) |
| { |
| struct dl *dl; |
| char nm[30]; |
| int retval = -1; |
| int fd = -1; |
| struct imsm_dev *dev; |
| struct imsm_map *map; |
| int slot = -1; |
| int keep_fd = 1; |
| |
| /* find map under migration */ |
| dev = imsm_get_device_during_migration(super); |
| /* nothing to load,no migration in progress? |
| */ |
| if (dev == NULL) |
| return -2; |
| |
| map = get_imsm_map(dev, MAP_0); |
| if (!map) |
| return -1; |
| |
| for (dl = super->disks; dl; dl = dl->next) { |
| /* skip spare and failed disks |
| */ |
| if (dl->index < 0) |
| continue; |
| /* read only from one of the first two slots |
| */ |
| slot = get_imsm_disk_slot(map, dl->index); |
| if (slot > 1 || slot < 0) |
| continue; |
| |
| if (dl->fd < 0) { |
| sprintf(nm, "%d:%d", dl->major, dl->minor); |
| fd = dev_open(nm, O_RDONLY); |
| if (fd >= 0) { |
| keep_fd = 0; |
| break; |
| } |
| } else { |
| fd = dl->fd; |
| break; |
| } |
| } |
| |
| if (fd < 0) |
| return retval; |
| retval = read_imsm_migr_rec(fd, super); |
| if (!keep_fd) |
| close(fd); |
| |
| return retval; |
| } |
| |
| /******************************************************************************* |
| * function: imsm_create_metadata_checkpoint_update |
| * Description: It creates update for checkpoint change. |
| * Parameters: |
| * super : imsm internal array info |
| * u : pointer to prepared update |
| * Returns: |
| * Uptate length. |
| * If length is equal to 0, input pointer u contains no update |
| ******************************************************************************/ |
| static int imsm_create_metadata_checkpoint_update( |
| struct intel_super *super, |
| struct imsm_update_general_migration_checkpoint **u) |
| { |
| |
| int update_memory_size = 0; |
| |
| dprintf("(enter)\n"); |
| |
| if (u == NULL) |
| return 0; |
| *u = NULL; |
| |
| /* size of all update data without anchor */ |
| update_memory_size = |
| sizeof(struct imsm_update_general_migration_checkpoint); |
| |
| *u = xcalloc(1, update_memory_size); |
| if (*u == NULL) { |
| dprintf("error: cannot get memory\n"); |
| return 0; |
| } |
| (*u)->type = update_general_migration_checkpoint; |
| (*u)->curr_migr_unit = current_migr_unit(super->migr_rec); |
| dprintf("prepared for %llu\n", (*u)->curr_migr_unit); |
| |
| return update_memory_size; |
| } |
| |
| static void imsm_update_metadata_locally(struct supertype *st, |
| void *buf, int len); |
| |
| /******************************************************************************* |
| * Function: write_imsm_migr_rec |
| * Description: Function writes imsm migration record |
| * (at the last sector of disk) |
| * Parameters: |
| * super : imsm internal array info |
| * Returns: |
| * 0 : success |
| * -1 : if fail |
| ******************************************************************************/ |
| static int write_imsm_migr_rec(struct supertype *st) |
| { |
| struct intel_super *super = st->sb; |
| unsigned int sector_size = super->sector_size; |
| unsigned long long dsize; |
| int retval = -1; |
| struct dl *sd; |
| int len; |
| struct imsm_update_general_migration_checkpoint *u; |
| struct imsm_dev *dev; |
| struct imsm_map *map; |
| |
| /* find map under migration */ |
| dev = imsm_get_device_during_migration(super); |
| /* if no migration, write buffer anyway to clear migr_record |
| * on disk based on first available device |
| */ |
| if (dev == NULL) |
| dev = get_imsm_dev(super, super->current_vol < 0 ? 0 : |
| super->current_vol); |
| |
| map = get_imsm_map(dev, MAP_0); |
| |
| if (sector_size == 4096) |
| convert_to_4k_imsm_migr_rec(super); |
| for (sd = super->disks ; sd ; sd = sd->next) { |
| int slot = -1; |
| |
| /* skip failed and spare devices */ |
| if (sd->index < 0) |
| continue; |
| /* write to 2 first slots only */ |
| if (map) |
| slot = get_imsm_disk_slot(map, sd->index); |
| if (map == NULL || slot > 1 || slot < 0) |
| continue; |
| |
| get_dev_size(sd->fd, NULL, &dsize); |
| if (lseek64(sd->fd, dsize - (MIGR_REC_SECTOR_POSITION * |
| sector_size), |
| SEEK_SET) < 0) { |
| pr_err("Cannot seek to anchor block: %s\n", |
| strerror(errno)); |
| goto out; |
| } |
| if ((unsigned int)write(sd->fd, super->migr_rec_buf, |
| MIGR_REC_BUF_SECTORS*sector_size) != |
| MIGR_REC_BUF_SECTORS*sector_size) { |
| pr_err("Cannot write migr record block: %s\n", |
| strerror(errno)); |
| goto out; |
| } |
| } |
| if (sector_size == 4096) |
| convert_from_4k_imsm_migr_rec(super); |
| /* update checkpoint information in metadata */ |
| len = imsm_create_metadata_checkpoint_update(super, &u); |
| if (len <= 0) { |
| dprintf("imsm: Cannot prepare update\n"); |
| goto out; |
| } |
| /* update metadata locally */ |
| imsm_update_metadata_locally(st, u, len); |
| /* and possibly remotely */ |
| if (st->update_tail) { |
| append_metadata_update(st, u, len); |
| /* during reshape we do all work inside metadata handler |
| * manage_reshape(), so metadata update has to be triggered |
| * insida it |
| */ |
| flush_metadata_updates(st); |
| st->update_tail = &st->updates; |
| } else |
| free(u); |
| |
| retval = 0; |
| out: |
| return retval; |
| } |
| |
| /* spare/missing disks activations are not allowe when |
| * array/container performs reshape operation, because |
| * all arrays in container works on the same disks set |
| */ |
| int imsm_reshape_blocks_arrays_changes(struct intel_super *super) |
| { |
| int rv = 0; |
| struct intel_dev *i_dev; |
| struct imsm_dev *dev; |
| |
| /* check whole container |
| */ |
| for (i_dev = super->devlist; i_dev; i_dev = i_dev->next) { |
| dev = i_dev->dev; |
| if (is_gen_migration(dev)) { |
| /* No repair during any migration in container |
| */ |
| rv = 1; |
| break; |
| } |
| } |
| return rv; |
| } |
| static unsigned long long imsm_component_size_alignment_check(int level, |
| int chunk_size, |
| unsigned int sector_size, |
| unsigned long long component_size) |
| { |
| unsigned int component_size_alignment; |
| |
| /* check component size alignment |
| */ |
| component_size_alignment = component_size % (chunk_size/sector_size); |
| |
| dprintf("(Level: %i, chunk_size = %i, component_size = %llu), component_size_alignment = %u\n", |
| level, chunk_size, component_size, |
| component_size_alignment); |
| |
| if (component_size_alignment && (level != 1) && (level != UnSet)) { |
| dprintf("imsm: reported component size aligned from %llu ", |
| component_size); |
| component_size -= component_size_alignment; |
| dprintf_cont("to %llu (%i).\n", |
| component_size, component_size_alignment); |
| } |
| |
| return component_size; |
| } |
| |
| /******************************************************************************* |
| * Function: get_bitmap_header_sector |
| * Description: Returns the sector where the bitmap header is placed. |
| * Parameters: |
| * st : supertype information |
| * dev_idx : index of the device with bitmap |
| * |
| * Returns: |
| * The sector where the bitmap header is placed |
| ******************************************************************************/ |
| static unsigned long long get_bitmap_header_sector(struct intel_super *super, |
| int dev_idx) |
| { |
| struct imsm_dev *dev = get_imsm_dev(super, dev_idx); |
| struct imsm_map *map = get_imsm_map(dev, MAP_0); |
| |
| if (!super->sector_size) { |
| dprintf("sector size is not set\n"); |
| return 0; |
| } |
| |
| return pba_of_lba0(map) + calc_component_size(map, dev) + |
| (IMSM_BITMAP_HEADER_OFFSET / super->sector_size); |
| } |
| |
| /******************************************************************************* |
| * Function: get_bitmap_sector |
| * Description: Returns the sector where the bitmap is placed. |
| * Parameters: |
| * st : supertype information |
| * dev_idx : index of the device with bitmap |
| * |
| * Returns: |
| * The sector where the bitmap is placed |
| ******************************************************************************/ |
| static unsigned long long get_bitmap_sector(struct intel_super *super, |
| int dev_idx) |
| { |
| if (!super->sector_size) { |
| dprintf("sector size is not set\n"); |
| return 0; |
| } |
| |
| return get_bitmap_header_sector(super, dev_idx) + |
| (IMSM_BITMAP_HEADER_SIZE / super->sector_size); |
| } |
| |
| static unsigned long long get_ppl_sector(struct intel_super *super, int dev_idx) |
| { |
| struct imsm_dev *dev = get_imsm_dev(super, dev_idx); |
| struct imsm_map *map = get_imsm_map(dev, MAP_0); |
| |
| return pba_of_lba0(map) + |
| (num_data_stripes(map) * map->blocks_per_strip); |
| } |
| |
| static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info, char *dmap) |
| { |
| struct intel_super *super = st->sb; |
| struct migr_record *migr_rec = super->migr_rec; |
| struct imsm_dev *dev = get_imsm_dev(super, super->current_vol); |
| struct imsm_map *map = get_imsm_map(dev, MAP_0); |
| struct imsm_map *prev_map = get_imsm_map(dev, MAP_1); |
| struct imsm_map *map_to_analyse = map; |
| struct dl *dl; |
| int map_disks = info->array.raid_disks; |
| |
| memset(info, 0, sizeof(*info)); |
| if (prev_map) |
| map_to_analyse = prev_map; |
| |
| dl = super->current_disk; |
| |
| info->container_member = super->current_vol; |
| info->array.raid_disks = map->num_members; |
| info->array.level = get_imsm_raid_level(map_to_analyse); |
| info->array.layout = imsm_level_to_layout(info->array.level); |
| info->array.md_minor = -1; |
| info->array.ctime = 0; |
| info->array.utime = 0; |
| info->array.chunk_size = |
| __le16_to_cpu(map_to_analyse->blocks_per_strip) << 9; |
| info->array.state = !(dev->vol.dirty & RAIDVOL_DIRTY); |
| info->custom_array_size = imsm_dev_size(dev); |
| info->recovery_blocked = imsm_reshape_blocks_arrays_changes(st->sb); |
| |
| if (is_gen_migration(dev)) { |
| info->reshape_active = 1; |
| info->new_level = get_imsm_raid_level(map); |
| info->new_layout = imsm_level_to_layout(info->new_level); |
| info->new_chunk = __le16_to_cpu(map->blocks_per_strip) << 9; |
| info->delta_disks = map->num_members - prev_map->num_members; |
| if (info->delta_disks) { |
| /* this needs to be applied to every array |
| * in the container. |
| */ |
| info->reshape_active = CONTAINER_RESHAPE; |
| } |
| /* We shape information that we give to md might have to be |
| * modify to cope with md's requirement for reshaping arrays. |
| * For example, when reshaping a RAID0, md requires it to be |
| * presented as a degraded RAID4. |
| * Also if a RAID0 is migrating to a RAID5 we need to specify |
| * the array as already being RAID5, but the 'before' layout |
| * is a RAID4-like layout. |
| */ |
| switch (info->array.level) { |
| case 0: |
| switch(info->new_level) { |
| case 0: |
| /* conversion is happening as RAID4 */ |
| info->array.level = 4; |
| info->array.raid_disks += 1; |
| break; |
| case 5: |
| /* conversion is happening as RAID5 */ |
| info->array.level = 5; |
| info->array.layout = ALGORITHM_PARITY_N; |
| info->delta_disks -= 1; |
| break; |
| default: |
| /* FIXME error message */ |
| info->array.level = UnSet; |
| break; |
| } |
| break; |
| } |
| } else { |
| info->new_level = UnSet; |
| info->new_layout = UnSet; |
| info->new_chunk = info->array.chunk_size; |
| info->delta_disks = 0; |
| } |
| |
| if (dl) { |
| info->disk.major = dl->major; |
| info->disk.minor = dl->minor; |
| info->disk.number = dl->index; |
| info->disk.raid_disk = get_imsm_disk_slot(map_to_analyse, |
| dl->index); |
| } |
| |
| info->data_offset = pba_of_lba0(map_to_analyse); |
| info->component_size = calc_component_size(map, dev); |
| info->component_size = imsm_component_size_alignment_check( |
| info->array.level, |
| info->array.chunk_size, |
| super->sector_size, |
| info->component_size); |
| info->bb.supported = 1; |
| |
| memset(info->uuid, 0, sizeof(info->uuid)); |
| info->recovery_start = MaxSector; |
| |
| if (info->array.level == 5 && |
| (dev->rwh_policy == RWH_DISTRIBUTED || |
| dev->rwh_policy == RWH_MULTIPLE_DISTRIBUTED)) { |
| info->consistency_policy = CONSISTENCY_POLICY_PPL; |
| info->ppl_sector = get_ppl_sector(super, super->current_vol); |
| if (dev->rwh_policy == RWH_MULTIPLE_DISTRIBUTED) |
| info->ppl_size = MULTIPLE_PPL_AREA_SIZE_IMSM >> 9; |
| else |
| info->ppl_size = (PPL_HEADER_SIZE + PPL_ENTRY_SPACE) |
| >> 9; |
| } else if (info->array.level <= 0) { |
| info->consistency_policy = CONSISTENCY_POLICY_NONE; |
| } else { |
| if (dev->rwh_policy == RWH_BITMAP) { |
| info->bitmap_offset = get_bitmap_sector(super, super->current_vol); |
| info->consistency_policy = CONSISTENCY_POLICY_BITMAP; |
| } else { |
| info->consistency_policy = CONSISTENCY_POLICY_RESYNC; |
| } |
| } |
| |
| info->reshape_progress = 0; |
| info->resync_start = MaxSector; |
| if ((map_to_analyse->map_state == IMSM_T_STATE_UNINITIALIZED || |
| !(info->array.state & 1)) && |
| imsm_reshape_blocks_arrays_changes(super) == 0) { |
| info->resync_start = 0; |
| } |
| if (dev->vol.migr_state) { |
| switch (migr_type(dev)) { |
| case MIGR_REPAIR: |
| case MIGR_INIT: { |
| __u64 blocks_per_unit = blocks_per_migr_unit(super, |
| dev); |
| __u64 units = vol_curr_migr_unit(dev); |
| |
| info->resync_start = blocks_per_unit * units; |
| break; |
| } |
| case MIGR_GEN_MIGR: { |
| __u64 blocks_per_unit = blocks_per_migr_unit(super, |
| dev); |
| __u64 units = current_migr_unit(migr_rec); |
| int used_disks; |
| |
| if (__le32_to_cpu(migr_rec->ascending_migr) && |
| (units < |
| (get_num_migr_units(migr_rec)-1)) && |
| (super->migr_rec->rec_status == |
| __cpu_to_le32(UNIT_SRC_IN_CP_AREA))) |
| units++; |
| |
| info->reshape_progress = blocks_per_unit * units; |
| |
| dprintf("IMSM: General Migration checkpoint : %llu (%llu) -> read reshape progress : %llu\n", |
| (unsigned long long)units, |
| (unsigned long long)blocks_per_unit, |
| info->reshape_progress); |
| |
| used_disks = imsm_num_data_members(prev_map); |
| if (used_disks > 0) { |
| info->custom_array_size = per_dev_array_size(map) * |
| used_disks; |
| } |
| } |
| case MIGR_VERIFY: |
| /* we could emulate the checkpointing of |
| * 'sync_action=check' migrations, but for now |
| * we just immediately complete them |
| */ |
| case MIGR_REBUILD: |
| /* this is handled by container_content_imsm() */ |
| case MIGR_STATE_CHANGE: |
| /* FIXME handle other migrations */ |
| default: |
| /* we are not dirty, so... */ |
| info->resync_start = MaxSector; |
| } |
| } |
| |
| strncpy(info->name, (char *) dev->volume, MAX_RAID_SERIAL_LEN); |
| info->name[MAX_RAID_SERIAL_LEN] = 0; |
| |
| info->array.major_version = -1; |
| info->array.minor_version = -2; |
| sprintf(info->text_version, "/%s/%d", st->container_devnm, info->container_member); |
| info->safe_mode_delay = 4000; /* 4 secs like the Matrix driver */ |
| uuid_from_super_imsm(st, info->uuid); |
| |
| if (dmap) { |
| int i, j; |
| for (i=0; i<map_disks; i++) { |
| dmap[i] = 0; |
| if (i < info->array.raid_disks) { |
| struct imsm_disk *dsk; |
| j = get_imsm_disk_idx(dev, i, MAP_X); |
| dsk = get_imsm_disk(super, j); |
| if (dsk && (dsk->status & CONFIGURED_DISK)) |
| dmap[i] = 1; |
| } |
| } |
| } |
| } |
| |
| static __u8 imsm_check_degraded(struct intel_super *super, struct imsm_dev *dev, |
| int failed, int look_in_map); |
| |
| static int imsm_count_failed(struct intel_super *super, struct imsm_dev *dev, |
| int look_in_map); |
| |
| static void manage_second_map(struct intel_super *super, struct imsm_dev *dev) |
| { |
| if (is_gen_migration(dev)) { |
| int failed; |
| __u8 map_state; |
| struct imsm_map *map2 = get_imsm_map(dev, MAP_1); |
| |
| failed = imsm_count_failed(super, dev, MAP_1); |
| map_state = imsm_check_degraded(super, dev, failed, MAP_1); |
| if (map2->map_state != map_state) { |
| map2->map_state = map_state; |
| super->updates_pending++; |
| } |
| } |
| } |
| |
| static struct imsm_disk *get_imsm_missing(struct intel_super *super, __u8 index) |
| { |
| struct dl *d; |
| |
| for (d = super->missing; d; d = d->next) |
| if (d->index == index) |
| return &d->disk; |
| return NULL; |
| } |
| |
| static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info, char *map) |
| { |
| struct intel_super *super = st->sb; |
| struct imsm_disk *disk; |
| int map_disks = info->array.raid_disks; |
| int max_enough = -1; |
| int i; |
| struct imsm_super *mpb; |
| |
| if (super->current_vol >= 0) { |
| getinfo_super_imsm_volume(st, info, map); |
| return; |
| } |
| memset(info, 0, sizeof(*info)); |
| |
| /* Set raid_disks to zero so that Assemble will always pull in valid |
| * spares |
| */ |
| info->array.raid_disks = 0; |
| info->array.level = LEVEL_CONTAINER; |
| info->array.layout = 0; |
| info->array.md_minor = -1; |
| info->array.ctime = 0; /* N/A for imsm */ |
| info->array.utime = 0; |
| info->array.chunk_size = 0; |
| |
| info->disk.major = 0; |
| info->disk.minor = 0; |
| info->disk.raid_disk = -1; |
| info->reshape_active = 0; |
| info->array.major_version = -1; |
| info->array.minor_version = -2; |
| strcpy(info->text_version, "imsm"); |
| info->safe_mode_delay = 0; |
| info->disk.number = -1; |
| info->disk.state = 0; |
| info->name[0] = 0; |
| info->recovery_start = MaxSector; |
| info->recovery_blocked = imsm_reshape_blocks_arrays_changes(st->sb); |
| info->bb.supported = 1; |
| |
| /* do we have the all the insync disks that we expect? */ |
| mpb = super->anchor; |
| info->events = __le32_to_cpu(mpb->generation_num); |
| |
| for (i = 0; i < mpb->num_raid_devs; i++) { |
| struct imsm_dev *dev = get_imsm_dev(super, i); |
| int failed, enough, j, missing = 0; |
| struct imsm_map *map; |
| __u8 state; |
| |
| failed = imsm_count_failed(super, dev, MAP_0); |
| state = imsm_check_degraded(super, dev, failed, MAP_0); |
| map = get_imsm_map(dev, MAP_0); |
| |
| /* any newly missing disks? |
| * (catches single-degraded vs double-degraded) |
| */ |
| for (j = 0; j < map->num_members; j++) { |
| __u32 ord = get_imsm_ord_tbl_ent(dev, j, MAP_0); |
| __u32 idx = ord_to_idx(ord); |
| |
| if (super->disks && super->disks->index == (int)idx) |
| info->disk.raid_disk = j; |
| |
| if (!(ord & IMSM_ORD_REBUILD) && |
| get_imsm_missing(super, idx)) { |
| missing = 1; |
| break; |
| } |
| } |
| |
| if (state == IMSM_T_STATE_FAILED) |
| enough = -1; |
| else if (state == IMSM_T_STATE_DEGRADED && |
| (state != map->map_state || missing)) |
| enough = 0; |
| else /* we're normal, or already degraded */ |
| enough = 1; |
| if (is_gen_migration(dev) && missing) { |
| /* during general migration we need all disks |
| * that process is running on. |
| * No new missing disk is allowed. |
| */ |
| max_enough = -1; |
| enough = -1; |
| /* no more checks necessary |
| */ |
| break; |
| } |
| /* in the missing/failed disk case check to see |
| * if at least one array is runnable |
| */ |
| max_enough = max(max_enough, enough); |
| } |
| dprintf("enough: %d\n", max_enough); |
| info->container_enough = max_enough; |
| |
| if (super->disks) { |
| __u32 reserved = imsm_reserved_sectors(super, super->disks); |
| |
| disk = &super->disks->disk; |
| info->data_offset = total_blocks(&super->disks->disk) - reserved; |
| info->component_size = reserved; |
| info->disk.state = is_configured(disk) ? (1 << MD_DISK_ACTIVE) : 0; |
| /* we don't change info->disk.raid_disk here because |
| * this state will be finalized in mdmon after we have |
| * found the 'most fresh' version of the metadata |
| */ |
| info->disk.state |= is_failed(disk) ? (1 << MD_DISK_FAULTY) : 0; |
| info->disk.state |= (is_spare(disk) || is_journal(disk)) ? |
| 0 : (1 << MD_DISK_SYNC); |
| } |
| |
| /* only call uuid_from_super_imsm when this disk is part of a populated container, |
| * ->compare_super may have updated the 'num_raid_devs' field for spares |
| */ |
| if (info->disk.state & (1 << MD_DISK_SYNC) || super->anchor->num_raid_devs) |
| uuid_from_super_imsm(st, info->uuid); |
| else |
| memcpy(info->uuid, uuid_zero, sizeof(uuid_zero)); |
| |
| /* I don't know how to compute 'map' on imsm, so use safe default */ |
| if (map) { |
| int i; |
| for (i = 0; i < map_disks; i++) |
| map[i] = 1; |
| } |
| |
| } |
| |
| /* allocates memory and fills disk in mdinfo structure |
| * for each disk in array */ |
| struct mdinfo *getinfo_super_disks_imsm(struct supertype *st) |
| { |
| struct mdinfo *mddev; |
| struct intel_super *super = st->sb; |
| struct imsm_disk *disk; |
| int count = 0; |
| struct dl *dl; |
| if (!super || !super->disks) |
| return NULL; |
| dl = super->disks; |
| mddev = xcalloc(1, sizeof(*mddev)); |
| while (dl) { |
| struct mdinfo *tmp; |
| disk = &dl->disk; |
| tmp = xcalloc(1, sizeof(*tmp)); |
| if (mddev->devs) |
| tmp->next = mddev->devs; |
| mddev->devs = tmp; |
| tmp->disk.number = count++; |
| tmp->disk.major = dl->major; |
| tmp->disk.minor = dl->minor; |
| tmp->disk.state = is_configured(disk) ? |
| (1 << MD_DISK_ACTIVE) : 0; |
| tmp->disk.state |= is_failed(disk) ? (1 << MD_DISK_FAULTY) : 0; |
| tmp->disk.state |= is_spare(disk) ? 0 : (1 << MD_DISK_SYNC); |
| tmp->disk.raid_disk = -1; |
| dl = dl->next; |
| } |
| return mddev; |
| } |
| |
| static int update_super_imsm(struct supertype *st, struct mdinfo *info, |
| char *update, char *devname, int verbose, |
| int uuid_set, char *homehost) |
| { |
| /* For 'assemble' and 'force' we need to return non-zero if any |
| * change was made. For others, the return value is ignored. |
| * Update options are: |
| * force-one : This device looks a bit old but needs to be included, |
| * update age info appropriately. |
| * assemble: clear any 'faulty' flag to allow this device to |
| * be assembled. |
| * force-array: Array is degraded but being forced, mark it clean |
| * if that will be needed to assemble it. |
| * |
| * newdev: not used ???? |
| * grow: Array has gained a new device - this is currently for |
| * linear only |
| * resync: mark as dirty so a resync will happen. |
| * name: update the name - preserving the homehost |
| * uuid: Change the uuid of the array to match watch is given |
| * |
| * Following are not relevant for this imsm: |
| * sparc2.2 : update from old dodgey metadata |
| * super-minor: change the preferred_minor number |
| * summaries: update redundant counters. |
| * homehost: update the recorded homehost |
| * _reshape_progress: record new reshape_progress position. |
| */ |
| int rv = 1; |
| struct intel_super *super = st->sb; |
| struct imsm_super *mpb; |
| |
| /* we can only update container info */ |
| if (!super || super->current_vol >= 0 || !super->anchor) |
| return 1; |
| |
| mpb = super->anchor; |
| |
| if (strcmp(update, "uuid") == 0) { |
| /* We take this to mean that the family_num should be updated. |
| * However that is much smaller than the uuid so we cannot really |
| * allow an explicit uuid to be given. And it is hard to reliably |
| * know if one was. |
| * So if !uuid_set we know the current uuid is random and just used |
| * the first 'int' and copy it to the other 3 positions. |
| * Otherwise we require the 4 'int's to be the same as would be the |
| * case if we are using a random uuid. So an explicit uuid will be |
| * accepted as long as all for ints are the same... which shouldn't hurt |
| */ |
| if (!uuid_set) { |
| info->uuid[1] = info->uuid[2] = info->uuid[3] = info->uuid[0]; |
| rv = 0; |
| } else { |
| if (info->uuid[0] != info->uuid[1] || |
| info->uuid[1] != info->uuid[2] || |
| info->uuid[2] != info->uuid[3]) |
| rv = -1; |
| else |
| rv = 0; |
| } |
| if (rv == 0) |
| mpb->orig_family_num = info->uuid[0]; |
| } else if (strcmp(update, "assemble") == 0) |
| rv = 0; |
| else |
| rv = -1; |
| |
| /* successful update? recompute checksum */ |
| if (rv == 0) |
| mpb->check_sum = __le32_to_cpu(__gen_imsm_checksum(mpb)); |
| |
| return rv; |
| } |
| |
| static size_t disks_to_mpb_size(int disks) |
| { |
| size_t size; |
| |
| size = sizeof(struct imsm_super); |
| size += (disks - 1) * sizeof(struct imsm_disk); |
| size += 2 * sizeof(struct imsm_dev); |
| /* up to 2 maps per raid device (-2 for imsm_maps in imsm_dev */ |
| size += (4 - 2) * sizeof(struct imsm_map); |
| /* 4 possible disk_ord_tbl's */ |
| size += 4 * (disks - 1) * sizeof(__u32); |
| /* maximum bbm log */ |
| size += sizeof(struct bbm_log); |
| |
| return size; |
| } |
| |
| static __u64 avail_size_imsm(struct supertype *st, __u64 devsize, |
| unsigned long long data_offset) |
| { |
| if (devsize < (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS)) |
| return 0; |
| |
| return devsize - (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS); |
| } |
| |
| static void free_devlist(struct intel_super *super) |
| { |
| struct intel_dev *dv; |
| |
| while (super->devlist) { |
| dv = super->devlist->next; |
| free(super->devlist->dev); |
| free(super->devlist); |
| super->devlist = dv; |
| } |
| } |
| |
| static void imsm_copy_dev(struct imsm_dev *dest, struct imsm_dev *src) |
| { |
| memcpy(dest, src, sizeof_imsm_dev(src, 0)); |
| } |
| |
| static int compare_super_imsm(struct supertype *st, struct supertype *tst, |
| int verbose) |
| { |
| /* |
| * return: |
| * 0 same, or first was empty, and second was copied |
| * 1 second had wrong number |
| * 2 wrong uuid |
| * 3 wrong other info |
| */ |
| struct intel_super *first = st->sb; |
| struct intel_super *sec = tst->sb; |
| |
| if (!first) { |
| st->sb = tst->sb; |
| tst->sb = NULL; |
| return 0; |
| } |
| /* in platform dependent environment test if the disks |
| * use the same Intel hba |
| * If not on Intel hba at all, allow anything. |
| */ |
| if (!check_env("IMSM_NO_PLATFORM") && first->hba && sec->hba) { |
| if (first->hba->type != sec->hba->type) { |
| if (verbose) |
| pr_err("HBAs of devices do not match %s != %s\n", |
| get_sys_dev_type(first->hba->type), |
| get_sys_dev_type(sec->hba->type)); |
| return 3; |
| } |
| |
| if (first->orom != sec->orom) { |
| if (verbose) |
| pr_err("HBAs of devices do not match %s != %s\n", |
| first->hba->pci_id, sec->hba->pci_id); |
| return 3; |
| } |
| |
| } |
| |
| /* if an anchor does not have num_raid_devs set then it is a free |
| * floating spare |
| */ |
| if (first->anchor->num_raid_devs > 0 && |
| sec->anchor->num_raid_devs > 0) { |
| /* Determine if these disks might ever have been |
| * related. Further disambiguation can only take place |
| * in load_super_imsm_all |
| */ |
| __u32 first_family = first->anchor->orig_family_num; |
| __u32 sec_family = sec->anchor->orig_family_num; |
| |
| if (memcmp(first->anchor->sig, sec->anchor->sig, |
| MAX_SIGNATURE_LENGTH) != 0) |
| return 3; |
| |
| if (first_family == 0) |
| first_family = first->anchor->family_num; |
| if (sec_family == 0) |
| sec_family = sec->anchor->family_num; |
| |
| if (first_family != sec_family) |
| return 3; |
| |
| } |
| |
| /* if 'first' is a spare promote it to a populated mpb with sec's |
| * family number |
| */ |
| if (first->anchor->num_raid_devs == 0 && |
| sec->anchor->num_raid_devs > 0) { |
| int i; |
| struct intel_dev *dv; |
| struct imsm_dev *dev; |
| |
| /* we need to copy raid device info from sec if an allocation |
| * fails here we don't associate the spare |
| */ |
| for (i = 0; i < sec->anchor->num_raid_devs; i++) { |
| dv = xmalloc(sizeof(*dv)); |
| dev = xmalloc(sizeof_imsm_dev(get_imsm_dev(sec, i), 1)); |
| dv->dev = dev; |
| dv->index = i; |
| dv->next = first->devlist; |
| first->devlist = dv; |
| } |
| if (i < sec->anchor->num_raid_devs) { |
| /* allocation failure */ |
| free_devlist(first); |
| pr_err("imsm: failed to associate spare\n"); |
| return 3; |
| } |
| first->anchor->num_raid_devs = sec->anchor->num_raid_devs; |
| first->anchor->orig_family_num = sec->anchor->orig_family_num; |
| first->anchor->family_num = sec->anchor->family_num; |
| memcpy(first->anchor->sig, sec->anchor->sig, MAX_SIGNATURE_LENGTH); |
| for (i = 0; i < sec->anchor->num_raid_devs; i++) |
| imsm_copy_dev(get_imsm_dev(first, i), get_imsm_dev(sec, i)); |
| } |
| |
| return 0; |
| } |
| |
| static void fd2devname(int fd, char *name) |
| { |
| struct stat st; |
| char path[256]; |
| char dname[PATH_MAX]; |
| char *nm; |
| int rv; |
| |
| name[0] = '\0'; |
| if (fstat(fd, &st) != 0) |
| return; |
| sprintf(path, "/sys/dev/block/%d:%d", |
| major(st.st_rdev), minor(st.st_rdev)); |
| |
| rv = readlink(path, dname, sizeof(dname)-1); |
| if (rv <= 0) |
| return; |
| |
| dname[rv] = '\0'; |
| nm = strrchr(dname, '/'); |
| if (nm) { |
| nm++; |
| snprintf(name, MAX_RAID_SERIAL_LEN, "/dev/%s", nm); |
| } |
| } |
| |
| static int nvme_get_serial(int fd, void *buf, size_t buf_len) |
| { |
| char path[60]; |
| char *name = fd2kname(fd); |
| |
| if (!name) |
| return 1; |
| |
| if (strncmp(name, "nvme", 4) != 0) |
| return 1; |
| |
| snprintf(path, sizeof(path) - 1, "/sys/block/%s/device/serial", name); |
| |
| return load_sys(path, buf, buf_len); |
| } |
| |
| extern int scsi_get_serial(int fd, void *buf, size_t buf_len); |
| |
| static int imsm_read_serial(int fd, char *devname, |
| __u8 *serial, size_t serial_buf_len) |
| { |
| char buf[50]; |
| int rv; |
| size_t len; |
| char *dest; |
| char *src; |
| unsigned int i; |
| |
| memset(buf, 0, sizeof(buf)); |
| |
| rv = nvme_get_serial(fd, buf, sizeof(buf)); |
| |
| if (rv) |
| rv = scsi_get_serial(fd, buf, sizeof(buf)); |
| |
| if (rv && check_env("IMSM_DEVNAME_AS_SERIAL")) { |
| memset(serial, 0, MAX_RAID_SERIAL_LEN); |
| fd2devname(fd, (char *) serial); |
| return 0; |
| } |
| |
| if (rv != 0) { |
| if (devname) |
| pr_err("Failed to retrieve serial for %s\n", |
| devname); |
| return rv; |
| } |
| |
| /* trim all whitespace and non-printable characters and convert |
| * ':' to ';' |
| */ |
| for (i = 0, dest = buf; i < sizeof(buf) && buf[i]; i++) { |
| src = &buf[i]; |
| if (*src > 0x20) { |
| /* ':' is reserved for use in placeholder serial |
| * numbers for missing disks |
| */ |
| if (*src == ':') |
| *dest++ = ';'; |
| else |
| *dest++ = *src; |
| } |
| } |
| len = dest - buf; |
| dest = buf; |
| |
| if (len > serial_buf_len) { |
| /* truncate leading characters */ |
| dest += len - serial_buf_len; |
| len = serial_buf_len; |
| } |
| |
| memset(serial, 0, serial_buf_len); |
| memcpy(serial, dest, len); |
| |
| return 0; |
| } |
| |
| static int serialcmp(__u8 *s1, __u8 *s2) |
| { |
| return strncmp((char *) s1, (char *) s2, MAX_RAID_SERIAL_LEN); |
| } |
| |
| static void serialcpy(__u8 *dest, __u8 *src) |
| { |
| strncpy((char *) dest, (char *) src, MAX_RAID_SERIAL_LEN); |
| } |
| |
| static struct dl *serial_to_dl(__u8 *serial, struct intel_super *super) |
| { |
| struct dl *dl; |
| |
| for (dl = super->disks; dl; dl = dl->next) |
| if (serialcmp(dl->serial, serial) == 0) |
| break; |
| |
| return dl; |
| } |
| |
| static struct imsm_disk * |
| __serial_to_disk(__u8 *serial, struct imsm_super *mpb, int *idx) |
| { |
| int i; |
| |
| for (i = 0; i < mpb->num_disks; i++) { |
| struct imsm_disk *disk = __get_imsm_disk(mpb, i); |
| |
| if (serialcmp(disk->serial, serial) == 0) { |
| if (idx) |
| *idx = i; |
| return disk; |
| } |
| } |
| |
| return NULL; |
| } |
| |
| static int |
| load_imsm_disk(int fd, struct intel_super *super, char *devname, int keep_fd) |
| { |
| struct imsm_disk *disk; |
| struct dl *dl; |
| struct stat stb; |
| int rv; |
| char name[40]; |
| __u8 serial[MAX_RAID_SERIAL_LEN]; |
| |
| rv = imsm_read_serial(fd, devname, serial, MAX_RAID_SERIAL_LEN); |
| |
| if (rv != 0) |
| return 2; |
| |
| dl = xcalloc(1, sizeof(*dl)); |
| |
| fstat(fd, &stb); |
| dl->major = major(stb.st_rdev); |
| dl->minor = minor(stb.st_rdev); |
| dl->next = super->disks; |
| dl->fd = keep_fd ? fd : -1; |
| assert(super->disks == NULL); |
| super->disks = dl; |
| serialcpy(dl->serial, serial); |
| dl->index = -2; |
| dl->e = NULL; |
| fd2devname(fd, name); |
| if (devname) |
| dl->devname = xstrdup(devname); |
| else |
| dl->devname = xstrdup(name); |
| |
| /* look up this disk's index in the current anchor */ |
| disk = __serial_to_disk(dl->serial, super->anchor, &dl->index); |
| if (disk) { |
| dl->disk = *disk; |
| /* only set index on disks that are a member of a |
| * populated contianer, i.e. one with raid_devs |
| */ |
| if (is_failed(&dl->disk)) |
| dl->index = -2; |
| else if (is_spare(&dl->disk) || is_journal(&dl->disk)) |
| dl->index = -1; |
| } |
| |
| return 0; |
| } |
| |
| /* When migrating map0 contains the 'destination' state while map1 |
| * contains the current state. When not migrating map0 contains the |
| * current state. This routine assumes that map[0].map_state is set to |
| * the current array state before being called. |
| * |
| * Migration is indicated by one of the following states |
| * 1/ Idle (migr_state=0 map0state=normal||unitialized||degraded||failed) |
| * 2/ Initialize (migr_state=1 migr_type=MIGR_INIT map0state=normal |
| * map1state=unitialized) |
| * 3/ Repair (Resync) (migr_state=1 migr_type=MIGR_REPAIR map0state=normal |
| * map1state=normal) |
| * 4/ Rebuild (migr_state=1 migr_type=MIGR_REBUILD map0state=normal |
| * map1state=degraded) |
| * 5/ Migration (mig_state=1 migr_type=MIGR_GEN_MIGR map0state=normal |
| * map1state=normal) |
| */ |
| static void migrate(struct imsm_dev *dev, struct intel_super *super, |
| __u8 to_state, int migr_type) |
| { |
| struct imsm_map *dest; |
| struct imsm_map *src = get_imsm_map(dev, MAP_0); |
| |
| dev->vol.migr_state = 1; |
| set_migr_type(dev, migr_type); |
| set_vol_curr_migr_unit(dev, 0); |
| dest = get_imsm_map(dev, MAP_1); |
| |
| /* duplicate and then set the target end state in map[0] */ |
| memcpy(dest, src, sizeof_imsm_map(src)); |
| if (migr_type == MIGR_GEN_MIGR) { |
| __u32 ord; |
| int i; |
| |
| for (i = 0; i < src->num_members; i++) { |
| ord = __le32_to_cpu(src->disk_ord_tbl[i]); |
| set_imsm_ord_tbl_ent(src, i, ord_to_idx(ord)); |
| } |
| } |
| |
| if (migr_type == MIGR_GEN_MIGR) |
| /* Clear migration record */ |
| memset(super->migr_rec, 0, sizeof(struct migr_record)); |
| |
| src->map_state = to_state; |
| } |
| |
| static void end_migration(struct imsm_dev *dev, struct intel_super *super, |
| __u8 map_state) |
| { |
| struct imsm_map *map = get_imsm_map(dev, MAP_0); |
| struct imsm_map *prev = get_imsm_map(dev, dev->vol.migr_state == 0 ? |
| MAP_0 : MAP_1); |
| int i, j; |
| |
| /* merge any IMSM_ORD_REBUILD bits that were not successfully |
| * completed in the last migration. |
| * |
| * FIXME add support for raid-level-migration |
| */ |
| if (map_state != map->map_state && (is_gen_migration(dev) == 0) && |
| prev->map_state != IMSM_T_STATE_UNINITIALIZED) { |
| /* when final map state is other than expected |
| * merge maps (not for migration) |
| */ |
| int failed; |
| |
| for (i = 0; i < prev->num_members; i++) |
| for (j = 0; j < map->num_members; j++) |
| /* during online capacity expansion |
| * disks position can be changed |
| * if takeover is used |
| */ |
| if (ord_to_idx(map->disk_ord_tbl[j]) == |
| ord_to_idx(prev->disk_ord_tbl[i])) { |
| map->disk_ord_tbl[j] |= |
| prev->disk_ord_tbl[i]; |
| break; |
| } |
| failed = imsm_count_failed(super, dev, MAP_0); |
| map_state = imsm_check_degraded(super, dev, failed, MAP_0); |
| } |
| |
| dev->vol.migr_state = 0; |
| set_migr_type(dev, 0); |
| set_vol_curr_migr_unit(dev, 0); |
| map->map_state = map_state; |
| } |
| |
| static int parse_raid_devices(struct intel_super *super) |
| { |
| int i; |
| struct imsm_dev *dev_new; |
| size_t len, len_migr; |
| size_t max_len = 0; |
| size_t space_needed = 0; |
| struct imsm_super *mpb = super->anchor; |
| |
| for (i = 0; i < super->anchor->num_raid_devs; i++) { |
| struct imsm_dev *dev_iter = __get_imsm_dev(super->anchor, i); |
| struct intel_dev *dv; |
| |
| len = sizeof_imsm_dev(dev_iter, 0); |
| len_migr = sizeof_imsm_dev(dev_iter, 1); |
| if (len_migr > len) |
| space_needed += len_migr - len; |
| |
| dv = xmalloc(sizeof(*dv)); |
| if (max_len < len_migr) |
| max_len = len_migr; |
| if (max_len > len_migr) |
| space_needed += max_len - len_migr; |
| dev_new = xmalloc(max_len); |
| imsm_copy_dev(dev_new, dev_iter); |
| dv->dev = dev_new; |
| dv->index = i; |
| dv->next = super->devlist; |
| super->devlist = dv; |
| } |
| |
| /* ensure that super->buf is large enough when all raid devices |
| * are migrating |
| */ |
| if (__le32_to_cpu(mpb->mpb_size) + space_needed > super->len) { |
| void *buf; |
| |
| len = ROUND_UP(__le32_to_cpu(mpb->mpb_size) + space_needed, |
| super->sector_size); |
| if (posix_memalign(&buf, MAX_SECTOR_SIZE, len) != 0) |
| return 1; |
| |
| memcpy(buf, super->buf, super->len); |
| memset(buf + super->len, 0, len - super->len); |
| free(super->buf); |
| super->buf = buf; |
| super->len = len; |
| } |
| |
| super->extra_space += space_needed; |
| |
| return 0; |
| } |
| |
| /******************************************************************************* |
| * Function: check_mpb_migr_compatibility |
| * Description: Function checks for unsupported migration features: |
| * - migration optimization area (pba_of_lba0) |
| * - descending reshape (ascending_migr) |
| * Parameters: |
| * super : imsm metadata information |
| * Returns: |
| * 0 : migration is compatible |
| * -1 : migration is not compatible |
| ******************************************************************************/ |
| int check_mpb_migr_compatibility(struct intel_super *super) |
| { |
| struct imsm_map *map0, *map1; |
| struct migr_record *migr_rec = super->migr_rec; |
| int i; |
| |
| for (i = 0; i < super->anchor->num_raid_devs; i++) { |
| struct imsm_dev *dev_iter = __get_imsm_dev(super->anchor, i); |
| |
| if (dev_iter && |
| dev_iter->vol.migr_state == 1 && |
| dev_iter->vol.migr_type == MIGR_GEN_MIGR) { |
| /* This device is migrating */ |
| map0 = get_imsm_map(dev_iter, MAP_0); |
| map1 = get_imsm_map(dev_iter, MAP_1); |
| if (pba_of_lba0(map0) != pba_of_lba0(map1)) |
| /* migration optimization area was used */ |
| return -1; |
| if (migr_rec->ascending_migr == 0 && |
| migr_rec->dest_depth_per_unit > 0) |
| /* descending reshape not supported yet */ |
| return -1; |
| } |
| } |
| return 0; |
| } |
| |
| static void __free_imsm(struct intel_super *super, int free_disks); |
| |
| /* load_imsm_mpb - read matrix metadata |
| * allocates super->mpb to be freed by free_imsm |
| */ |
| static int load_imsm_mpb(int fd, struct intel_super *super, char *devname) |
| { |
| unsigned long long dsize; |
| unsigned long long sectors; |
| unsigned int sector_size = super->sector_size; |
| struct stat; |
| struct imsm_super *anchor; |
| __u32 check_sum; |
| |
| get_dev_size(fd, NULL, &dsize); |
| if (dsize < 2*sector_size) { |
| if (devname) |
| pr_err("%s: device to small for imsm\n", |
| devname); |
| return 1; |
| } |
| |
| if (lseek64(fd, dsize - (sector_size * 2), SEEK_SET) < 0) { |
| if (devname) |
| pr_err("Cannot seek to anchor block on %s: %s\n", |
| devname, strerror(errno)); |
| return 1; |
| } |
| |
| if (posix_memalign((void **)&anchor, sector_size, sector_size) != 0) { |
| if (devname) |
| pr_err("Failed to allocate imsm anchor buffer on %s\n", devname); |
| return 1; |
| } |
| if ((unsigned int)read(fd, anchor, sector_size) != sector_size) { |
| if (devname) |
| pr_err("Cannot read anchor block on %s: %s\n", |
| devname, strerror(errno)); |
| free(anchor); |
| return 1; |
| } |
| |
| if (strncmp((char *) anchor->sig, MPB_SIGNATURE, MPB_SIG_LEN) != 0) { |
| if (devname) |
| pr_err("no IMSM anchor on %s\n", devname); |
| free(anchor); |
| return 2; |
| } |
| |
| __free_imsm(super, 0); |
| /* reload capability and hba */ |
| |
| /* capability and hba must be updated with new super allocation */ |
| find_intel_hba_capability(fd, super, devname); |
| super->len = ROUND_UP(anchor->mpb_size, sector_size); |
| if (posix_memalign(&super->buf, MAX_SECTOR_SIZE, super->len) != 0) { |
| if (devname) |
| pr_err("unable to allocate %zu byte mpb buffer\n", |
| super->len); |
| free(anchor); |
| return 2; |
| } |
| memcpy(super->buf, anchor, sector_size); |
| |
| sectors = mpb_sectors(anchor, sector_size) - 1; |
| free(anchor); |
| |
| if (posix_memalign(&super->migr_rec_buf, MAX_SECTOR_SIZE, |
| MIGR_REC_BUF_SECTORS*MAX_SECTOR_SIZE) != 0) { |
| pr_err("could not allocate migr_rec buffer\n"); |
| free(super->buf); |
| return 2; |
| } |
| super->clean_migration_record_by_mdmon = 0; |
| |
| if (!sectors) { |
| check_sum = __gen_imsm_checksum(super->anchor); |
| if (check_sum != __le32_to_cpu(super->anchor->check_sum)) { |
| if (devname) |
| pr_err("IMSM checksum %x != %x on %s\n", |
| check_sum, |
| __le32_to_cpu(super->anchor->check_sum), |
| devname); |
| return 2; |
| } |
| |
| return 0; |
| } |
| |
| /* read the extended mpb */ |
| if (lseek64(fd, dsize - (sector_size * (2 + sectors)), SEEK_SET) < 0) { |
| if (devname) |
| pr_err("Cannot seek to extended mpb on %s: %s\n", |
| devname, strerror(errno)); |
| return 1; |
| } |
| |
| if ((unsigned int)read(fd, super->buf + sector_size, |
| super->len - sector_size) != super->len - sector_size) { |
| if (devname) |
| pr_err("Cannot read extended mpb on %s: %s\n", |
| devname, strerror(errno)); |
| return 2; |
| } |
| |
| check_sum = __gen_imsm_checksum(super->anchor); |
| if (check_sum != __le32_to_cpu(super->anchor->check_sum)) { |
| if (devname) |
| pr_err("IMSM checksum %x != %x on %s\n", |
| check_sum, __le32_to_cpu(super->anchor->check_sum), |
| devname); |
| return 3; |
| } |
| |
| return 0; |
| } |
| |
| static int read_imsm_migr_rec(int fd, struct intel_super *super); |
| |
| /* clears hi bits in metadata if MPB_ATTRIB_2TB_DISK not set */ |
| static void clear_hi(struct intel_super *super) |
| { |
| struct imsm_super *mpb = super->anchor; |
| int i, n; |
| if (mpb->attributes & MPB_ATTRIB_2TB_DISK) |
| return; |
| for (i = 0; i < mpb->num_disks; ++i) { |
| struct imsm_disk *disk = &mpb->disk[i]; |
| disk->total_blocks_hi = 0; |
| } |
| for (i = 0; i < mpb->num_raid_devs; ++i) { |
| struct imsm_dev *dev = get_imsm_dev(super, i); |
| if (!dev) |
| return; |
| for (n = 0; n < 2; ++n) { |
| struct imsm_map *map = get_imsm_map(dev, n); |
| if (!map) |
| continue; |
| map->pba_of_lba0_hi = 0; |
| map->blocks_per_member_hi = 0; |
| map->num_data_stripes_hi = 0; |
| } |
| } |
| } |
| |
| static int |
| load_and_parse_mpb(int fd, struct intel_super *super, char *devname, int keep_fd) |
| { |
| int err; |
| |
| err = load_imsm_mpb(fd, super, devname); |
| if (err) |
| return err; |
| if (super->sector_size == 4096) |
| convert_from_4k(super); |
| err = load_imsm_disk(fd, super, devname, keep_fd); |
| if (err) |
| return err; |
| err = parse_raid_devices(super); |
| if (err) |
| return err; |
| err = load_bbm_log(super); |
| clear_hi(super); |
| return err; |
| } |
| |
| static void __free_imsm_disk(struct dl *d) |
| { |
| if (d->fd >= 0) |
| close(d->fd); |
| if (d->devname) |
| free(d->devname); |
| if (d->e) |
| free(d->e); |
| free(d); |
| |
| } |
| |
| static void free_imsm_disks(struct intel_super *super) |
| { |
| struct dl *d; |
| |
| while (super->disks) { |
| d = super->disks; |
| super->disks = d->next; |
| __free_imsm_disk(d); |
| } |
| while (super->disk_mgmt_list) { |
| d = super->disk_mgmt_list; |
| super->disk_mgmt_list = d->next; |
| __free_imsm_disk(d); |
| } |
| while (super->missing) { |
| d = super->missing; |
| super->missing = d->next; |
| __free_imsm_disk(d); |
| } |
| |
| } |
| |
| /* free all the pieces hanging off of a super pointer */ |
| static void __free_imsm(struct intel_super *super, int free_disks) |
| { |
| struct intel_hba *elem, *next; |
| |
| if (super->buf) { |
| free(super->buf); |
| super->buf = NULL; |
| } |
| /* unlink capability description */ |
| super->orom = NULL; |
| if (super->migr_rec_buf) { |
| free(super->migr_rec_buf); |
| super->migr_rec_buf = NULL; |
| } |
| if (free_disks) |
| free_imsm_disks(super); |
| free_devlist(super); |
| elem = super->hba; |
| while (elem) { |
| if (elem->path) |
| free((void *)elem->path); |
| next = elem->next; |
| free(elem); |
| elem = next; |
| } |
| if (super->bbm_log) |
| free(super->bbm_log); |
| super->hba = NULL; |
| } |
| |
| static void free_imsm(struct intel_super *super) |
| { |
| __free_imsm(super, 1); |
| free(super->bb.entries); |
| free(super); |
| } |
| |
| static void free_super_imsm(struct supertype *st) |
| { |
| struct intel_super *super = st->sb; |
| |
| if (!super) |
| return; |
| |
| free_imsm(super); |
| st->sb = NULL; |
| } |
| |
| static struct intel_super *alloc_super(void) |
| { |
| struct intel_super *super = xcalloc(1, sizeof(*super)); |
| |
| super->current_vol = -1; |
| super->create_offset = ~((unsigned long long) 0); |
| |
| super->bb.entries = xmalloc(BBM_LOG_MAX_ENTRIES * |
| sizeof(struct md_bb_entry)); |
| if (!super->bb.entries) { |
| free(super); |
| return NULL; |
| } |
| |
| return super; |
| } |
| |
| /* |
| * find and allocate hba and OROM/EFI based on valid fd of RAID component device |
| */ |
| static int find_intel_hba_capability(int fd, struct intel_super *super, char *devname) |
| { |
| struct sys_dev *hba_name; |
| int rv = 0; |
| |
| if (fd >= 0 && test_partition(fd)) { |
| pr_err("imsm: %s is a partition, cannot be used in IMSM\n", |
| devname); |
| return 1; |
| } |
| if (fd < 0 || check_env("IMSM_NO_PLATFORM")) { |
| super->orom = NULL; |
| super->hba = NULL; |
| return 0; |
| } |
| hba_name = find_disk_attached_hba(fd, NULL); |
| if (!hba_name) { |
| if (devname) |
| pr_err("%s is not attached to Intel(R) RAID controller.\n", |
| devname); |
| return 1; |
| } |
| rv = attach_hba_to_super(super, hba_name); |
| if (rv == 2) { |
| if (devname) { |
| struct intel_hba *hba = super->hba; |
| |
| pr_err("%s is attached to Intel(R) %s %s (%s),\n" |
| " but the container is assigned to Intel(R) %s %s (", |
| devname, |
| get_sys_dev_type(hba_name->type), |
| hba_name->type == SYS_DEV_VMD ? "domain" : "RAID controller", |
| hba_name->pci_id ? : "Err!", |
| get_sys_dev_type(super->hba->type), |
| hba->type == SYS_DEV_VMD ? "domain" : "RAID controller"); |
| |
| while (hba) { |
| fprintf(stderr, "%s", hba->pci_id ? : "Err!"); |
| if (hba->next) |
| fprintf(stderr, ", "); |
| hba = hba->next; |
| } |
| fprintf(stderr, ").\n" |
| " Mixing devices attached to different controllers is not allowed.\n"); |
| } |
| return 2; |
| } |
| super->orom = find_imsm_capability(hba_name); |
| if (!super->orom) |
| return 3; |
| |
| return 0; |
| } |
| |
| /* find_missing - helper routine for load_super_imsm_all that identifies |
| * disks that have disappeared from the system. This routine relies on |
| * the mpb being uptodate, which it is at load time. |
| */ |
| static int find_missing(struct intel_super *super) |
| { |
| int i; |
| struct imsm_super *mpb = super->anchor; |
| struct dl *dl; |
| struct imsm_disk *disk; |
| |
| for (i = 0; i < mpb->num_disks; i++) { |
| disk = __get_imsm_disk(mpb, i); |
| dl = serial_to_dl(disk->serial, super); |
| if (dl) |
| continue; |
| |
| dl = xmalloc(sizeof(*dl)); |
| dl->major = 0; |
| dl->minor = 0; |
| dl->fd = -1; |
| dl->devname = xstrdup("missing"); |
| dl->index = i; |
| serialcpy(dl->serial, disk->serial); |
| dl->disk = *disk; |
| dl->e = NULL; |
| dl->next = super->missing; |
| super->missing = dl; |
| } |
| |
| return 0; |
| } |
| |
| static struct intel_disk *disk_list_get(__u8 *serial, struct intel_disk *disk_list) |
| { |
| struct intel_disk *idisk = disk_list; |
| |
| while (idisk) { |
| if (serialcmp(idisk->disk.serial, serial) == 0) |
| break; |
| idisk = idisk->next; |
| } |
| |
| return idisk; |
| } |
| |
| static int __prep_thunderdome(struct intel_super **table, int tbl_size, |
| struct intel_super *super, |
| struct intel_disk **disk_list) |
| { |
| struct imsm_disk *d = &super->disks->disk; |
| struct imsm_super *mpb = super->anchor; |
| int i, j; |
| |
| for (i = 0; i < tbl_size; i++) { |
| struct imsm_super *tbl_mpb = table[i]->anchor; |
| struct imsm_disk *tbl_d = &table[i]->disks->disk; |
| |
| if (tbl_mpb->family_num == mpb->family_num) { |
| if (tbl_mpb->check_sum == mpb->check_sum) { |
| dprintf("mpb from %d:%d matches %d:%d\n", |
| super->disks->major, |
| super->disks->minor, |
| table[i]->disks->major, |
| table[i]->disks->minor); |
| break; |
| } |
| |
| if (((is_configured(d) && !is_configured(tbl_d)) || |
| is_configured(d) == is_configured(tbl_d)) && |
| tbl_mpb->generation_num < mpb->generation_num) { |
| /* current version of the mpb is a |
| * better candidate than the one in |
| * super_table, but copy over "cross |
| * generational" status |
| */ |
| struct intel_disk *idisk; |
| |
| dprintf("mpb from %d:%d replaces %d:%d\n", |
| super->disks->major, |
| super->disks->minor, |
| table[i]->disks->major, |
| table[i]->disks->minor); |
| |
| idisk = disk_list_get(tbl_d->serial, *disk_list); |
| if (idisk && is_failed(&idisk->disk)) |
| tbl_d->status |= FAILED_DISK; |
| break; |
| } else { |
| struct intel_disk *idisk; |
| struct imsm_disk *disk; |
| |
| /* tbl_mpb is more up to date, but copy |
| * over cross generational status before |
| * returning |
| */ |
| disk = __serial_to_disk(d->serial, mpb, NULL); |
| if (disk && is_failed(disk)) |
| d->status |= FAILED_DISK; |
| |
| idisk = disk_list_get(d->serial, *disk_list); |
| if (idisk) { |
| idisk->owner = i; |
| if (disk && is_configured(disk)) |
| idisk->disk.status |= CONFIGURED_DISK; |
| } |
| |
| dprintf("mpb from %d:%d prefer %d:%d\n", |
| super->disks->major, |
| super->disks->minor, |
| table[i]->disks->major, |
| table[i]->disks->minor); |
| |
| return tbl_size; |
| } |
| } |
| } |
| |
| if (i >= tbl_size) |
| table[tbl_size++] = super; |
| else |
| table[i] = super; |
| |
| /* update/extend the merged list of imsm_disk records */ |
| for (j = 0; j < mpb->num_disks; j++) { |
| struct imsm_disk *disk = __get_imsm_disk(mpb, j); |
| struct intel_disk *idisk; |
| |
| idisk = disk_list_get(disk->serial, *disk_list); |
| if (idisk) { |
| idisk->disk.status |= disk->status; |
| if (is_configured(&idisk->disk) || |
| is_failed(&idisk->disk)) |
| idisk->disk.status &= ~(SPARE_DISK); |
| } else { |
| idisk = xcalloc(1, sizeof(*idisk)); |
| idisk->owner = IMSM_UNKNOWN_OWNER; |
| idisk->disk = *disk; |
| idisk->next = *disk_list; |
| *disk_list = idisk; |
| } |
| |
| if (serialcmp(idisk->disk.serial, d->serial) == 0) |
| idisk->owner = i; |
| } |
| |
| return tbl_size; |
| } |
| |
| static struct intel_super * |
| validate_members(struct intel_super *super, struct intel_disk *disk_list, |
| const int owner) |
| { |
| struct imsm_super *mpb = super->anchor; |
| int ok_count = 0; |
| int i; |
| |
| for (i = 0; i < mpb->num_disks; i++) { |
| struct imsm_disk *disk = __get_imsm_disk(mpb, i); |
| struct intel_disk *idisk; |
| |
| idisk = disk_list_get(disk->serial, disk_list); |
| if (idisk) { |
| if (idisk->owner == owner || |
| idisk->owner == IMSM_UNKNOWN_OWNER) |
| ok_count++; |
| else |
| dprintf("'%.16s' owner %d != %d\n", |
| disk->serial, idisk->owner, |
| owner); |
| } else { |
| dprintf("unknown disk %x [%d]: %.16s\n", |
| __le32_to_cpu(mpb->family_num), i, |
| disk->serial); |
| break; |
| } |
| } |
| |
| if (ok_count == mpb->num_disks) |
| return super; |
| return NULL; |
| } |
| |
| static void show_conflicts(__u32 family_num, struct intel_super *super_list) |
| { |
| struct intel_super *s; |
| |
| for (s = super_list; s; s = s->next) { |
| if (family_num != s->anchor->family_num) |
| continue; |
| pr_err("Conflict, offlining family %#x on '%s'\n", |
| __le32_to_cpu(family_num), s->disks->devname); |
| } |
| } |
| |
| static struct intel_super * |
| imsm_thunderdome(struct intel_super **super_list, int len) |
| { |
| struct intel_super *super_table[len]; |
| struct intel_disk *disk_list = NULL; |
| struct intel_super *champion, *spare; |
| struct intel_super *s, **del; |
| int tbl_size = 0; |
| int conflict; |
| int i; |
| |
| memset(super_table, 0, sizeof(super_table)); |
| for (s = *super_list; s; s = s->next) |
| tbl_size = __prep_thunderdome(super_table, tbl_size, s, &disk_list); |
| |
| for (i = 0; i < tbl_size; i++) { |
| struct imsm_disk *d; |
| struct intel_disk *idisk; |
| struct imsm_super *mpb = super_table[i]->anchor; |
| |
| s = super_table[i]; |
| d = &s->disks->disk; |
| |
| /* 'd' must appear in merged disk list for its |
| * configuration to be valid |
| */ |
| idisk = disk_list_get(d->serial, disk_list); |
| if (idisk && idisk->owner == i) |
| s = validate_members(s, disk_list, i); |
| else |
| s = NULL; |
| |
| if (!s) |
| dprintf("marking family: %#x from %d:%d offline\n", |
| mpb->family_num, |
| super_table[i]->disks->major, |
| super_table[i]->disks->minor); |
| super_table[i] = s; |
| } |
| |
| /* This is where the mdadm implementation differs from the Windows |
| * driver which has no strict concept of a container. We can only |
| * assemble one family from a container, so when returning a prodigal |
| * array member to this system the code will not be able to disambiguate |
| * the container contents that should be assembled ("foreign" versus |
| * "local"). It requires user intervention to set the orig_family_num |
| * to a new value to establish a new container. The Windows driver in |
| * this situation fixes up the volume name in place and manages the |
| * foreign array as an independent entity. |
| */ |
| s = NULL; |
| spare = NULL; |
| conflict = 0; |
| for (i = 0; i < tbl_size; i++) { |
| struct intel_super *tbl_ent = super_table[i]; |
| int is_spare = 0; |
| |
| if (!tbl_ent) |
| continue; |
| |
| if (tbl_ent->anchor->num_raid_devs == 0) { |
| spare = tbl_ent; |
| is_spare = 1; |
| } |
| |
| if (s && !is_spare) { |
| show_conflicts(tbl_ent->anchor->family_num, *super_list); |
| conflict++; |
| } else if (!s && !is_spare) |
| s = tbl_ent; |
| } |
| |
| if (!s) |
| s = spare; |
| if (!s) { |
| champion = NULL; |
| goto out; |
| } |
| champion = s; |
| |
| if (conflict) |
| pr_err("Chose family %#x on '%s', assemble conflicts to new container with '--update=uuid'\n", |
| __le32_to_cpu(s->anchor->family_num), s->disks->devname); |
| |
| /* collect all dl's onto 'champion', and update them to |
| * champion's version of the status |
| */ |
| for (s = *super_list; s; s = s->next) { |
| struct imsm_super *mpb = champion->anchor; |
| struct dl *dl = s->disks; |
| |
| if (s == champion) |
| continue; |
| |
| mpb->attributes |= s->anchor->attributes & MPB_ATTRIB_2TB_DISK; |
| |
| for (i = 0; i < mpb->num_disks; i++) { |
| struct imsm_disk *disk; |
| |
| disk = __serial_to_disk(dl->serial, mpb, &dl->index); |
| if (disk) { |
| dl->disk = *disk; |
| /* only set index on disks that are a member of |
| * a populated contianer, i.e. one with |
| * raid_devs |
| */ |
| if (is_failed(&dl->disk)) |
| dl->index = -2; |
| else if (is_spare(&dl->disk)) |
| dl->index = -1; |
| break; |
| } |
| } |
| |
| if (i >= mpb->num_disks) { |
| struct intel_disk *idisk; |
| |
| idisk = disk_list_get(dl->serial, disk_list); |
| if (idisk && is_spare(&idisk->disk) && |
| !is_failed(&idisk->disk) && !is_configured(&idisk->disk)) |
| dl->index = -1; |
| else { |
| dl->index = -2; |
| continue; |
| } |
| } |
| |
| dl->next = champion->disks; |
| champion->disks = dl; |
| s->disks = NULL; |
| } |
| |
| /* delete 'champion' from super_list */ |
| for (del = super_list; *del; ) { |
| if (*del == champion) { |
| *del = (*del)->next; |
| break; |
| } else |
| del = &(*del)->next; |
| } |
| champion->next = NULL; |
| |
| out: |
| while (disk_list) { |
| struct intel_disk *idisk = disk_list; |
| |
| disk_list = disk_list->next; |
| free(idisk); |
| } |
| |
| return champion; |
| } |
| |
| static int |
| get_sra_super_block(int fd, struct intel_super **super_list, char *devname, int *max, int keep_fd); |
| static int get_super_block(struct intel_super **super_list, char *devnm, char *devname, |
| int major, int minor, int keep_fd); |
| static int |
| get_devlist_super_block(struct md_list *devlist, struct intel_super **super_list, |
| int *max, int keep_fd); |
| |
| static int load_super_imsm_all(struct supertype *st, int fd, void **sbp, |
| char *devname, struct md_list *devlist, |
| int keep_fd) |
| { |
| struct intel_super *super_list = NULL; |
| struct intel_super *super = NULL; |
| int err = 0; |
| int i = 0; |
| |
| if (fd >= 0) |
| /* 'fd' is an opened container */ |
| err = get_sra_super_block(fd, &super_list, devname, &i, keep_fd); |
| else |
| /* get super block from devlist devices */ |
| err = get_devlist_super_block(devlist, &super_list, &i, keep_fd); |
| if (err) |
| goto error; |
| /* all mpbs enter, maybe one leaves */ |
| super = imsm_thunderdome(&super_list, i); |
| if (!super) { |
| err = 1; |
| goto error; |
| } |
| |
| if (find_missing(super) != 0) { |
| free_imsm(super); |
| err = 2; |
| goto error; |
| } |
| |
| /* load migration record */ |
| err = load_imsm_migr_rec(super); |
| if (err == -1) { |
| /* migration is in progress, |
| * but migr_rec cannot be loaded, |
| */ |
| err = 4; |
| goto error; |
| } |
| |
| /* Check migration compatibility */ |
| if (err == 0 && check_mpb_migr_compatibility(super) != 0) { |
| pr_err("Unsupported migration detected"); |
| if (devname) |
| fprintf(stderr, " on %s\n", devname); |
| else |
| fprintf(stderr, " (IMSM).\n"); |
| |
| err = 5; |
| goto error; |
| } |
| |
| err = 0; |
| |
| error: |
| while (super_list) { |
| struct intel_super *s = super_list; |
| |
| super_list = super_list->next; |
| free_imsm(s); |
| } |
| |
| if (err) |
| return err; |
| |
| *sbp = super; |
| if (fd >= 0) |
| strcpy(st->container_devnm, fd2devnm(fd)); |
| else |
| st->container_devnm[0] = 0; |
| if (err == 0 && st->ss == NULL) { |
| st->ss = &super_imsm; |
| st->minor_version = 0; |
| st->max_devs = IMSM_MAX_DEVICES; |
| } |
| return 0; |
| } |
| |
| static int |
| get_devlist_super_block(struct md_list *devlist, struct intel_super **super_list, |
| int *max, int keep_fd) |
| { |
| struct md_list *tmpdev; |
| int err = 0; |
| int i = 0; |
| |
| for (i = 0, tmpdev = devlist; tmpdev; tmpdev = tmpdev->next) { |
| if (tmpdev->used != 1) |
| continue; |
| if (tmpdev->container == 1) { |
| int lmax = 0; |
| int fd = dev_open(tmpdev->devname, O_RDONLY|O_EXCL); |
| if (fd < 0) { |
| pr_err("cannot open device %s: %s\n", |
| tmpdev->devname, strerror(errno)); |
| err = 8; |
| goto error; |
| } |
| err = get_sra_super_block(fd, super_list, |
| tmpdev->devname, &lmax, |
| keep_fd); |
| i += lmax; |
| close(fd); |
| if (err) { |
| err = 7; |
| goto error; |
| } |
| } else { |
| int major = major(tmpdev->st_rdev); |
| int minor = minor(tmpdev->st_rdev); |
| err = get_super_block(super_list, |
| NULL, |
| tmpdev->devname, |
| major, minor, |
| keep_fd); |
| i++; |
| if (err) { |
| err = 6; |
| goto error; |
| } |
| } |
| } |
| error: |
| *max = i; |
| return err; |
| } |
| |
| static int get_super_block(struct intel_super **super_list, char *devnm, char *devname, |
| int major, int minor, int keep_fd) |
| { |
| struct intel_super *s; |
| char nm[32]; |
| int dfd = -1; |
| int err = 0; |
| int retry; |
| |
| s = alloc_super(); |
| if (!s) { |
| err = 1; |
| goto error; |
| } |
| |
| sprintf(nm, "%d:%d", major, minor); |
| dfd = dev_open(nm, O_RDWR); |
| if (dfd < 0) { |
| err = 2; |
| goto error; |
| } |
| |
| get_dev_sector_size(dfd, NULL, &s->sector_size); |
| find_intel_hba_capability(dfd, s, devname); |
| err = load_and_parse_mpb(dfd, s, NULL, keep_fd); |
| |
| /* retry the load if we might have raced against mdmon */ |
| if (err == 3 && devnm && mdmon_running(devnm)) |
| for (retry = 0; retry < 3; retry++) { |
| usleep(3000); |
| err = load_and_parse_mpb(dfd, s, NULL, keep_fd); |
| if (err != 3) |
| break; |
| } |
| error: |
| if (!err) { |
| s->next = *super_list; |
| *super_list = s; |
| } else { |
| if (s) |
| free_imsm(s); |
| if (dfd >= 0) |
| close(dfd); |
| } |
| if (dfd >= 0 && !keep_fd) |
| close(dfd); |
| return err; |
| |
| } |
| |
| static int |
| get_sra_super_block(int fd, struct intel_super **super_list, char *devname, int *max, int keep_fd) |
| { |
| struct mdinfo *sra; |
| char *devnm; |
| struct mdinfo *sd; |
| int err = 0; |
| int i = 0; |
| sra = sysfs_read(fd, NULL, GET_LEVEL|GET_VERSION|GET_DEVS|GET_STATE); |
| if (!sra) |
| return 1; |
| |
| if (sra->array.major_version != -1 || |
| sra->array.minor_version != -2 || |
| strcmp(sra->text_version, "imsm") != 0) { |
| err = 1; |
| goto error; |
| } |
| /* load all mpbs */ |
| devnm = fd2devnm(fd); |
| for (sd = sra->devs, i = 0; sd; sd = sd->next, i++) { |
| if (get_super_block(super_list, devnm, devname, |
| sd->disk.major, sd->disk.minor, keep_fd) != 0) { |
| err = 7; |
| goto error; |
| } |
| } |
| error: |
| sysfs_free(sra); |
| *max = i; |
| return err; |
| } |
| |
| static int load_container_imsm(struct supertype *st, int fd, char *devname) |
| { |
| return load_super_imsm_all(st, fd, &st->sb, devname, NULL, 1); |
| } |
| |
| static int load_super_imsm(struct supertype *st, int fd, char *devname) |
| { |
| struct intel_super *super; |
| int rv; |
| int retry; |
| |
| if (test_partition(fd)) |
| /* IMSM not allowed on partitions */ |
| return 1; |
| |
| free_super_imsm(st); |
| |
| super = alloc_super(); |
| get_dev_sector_size(fd, NULL, &super->sector_size); |
| if (!super) |
| return 1; |
| /* Load hba and capabilities if they exist. |
| * But do not preclude loading metadata in case capabilities or hba are |
| * non-compliant and ignore_hw_compat is set. |
| */ |
| rv = find_intel_hba_capability(fd, super, devname); |
| /* no orom/efi or non-intel hba of the disk */ |
| if (rv != 0 && st->ignore_hw_compat == 0) { |
| if (devname) |
| pr_err("No OROM/EFI properties for %s\n", devname); |
| free_imsm(super); |
| return 2; |
| } |
| rv = load_and_parse_mpb(fd, super, devname, 0); |
| |
| /* retry the load if we might have raced against mdmon */ |
| if (rv == 3) { |
| struct mdstat_ent *mdstat = NULL; |
| char *name = fd2kname(fd); |
| |
| if (name) |
| mdstat = mdstat_by_component(name); |
| |
| if (mdstat && mdmon_running(mdstat->devnm) && getpid() != mdmon_pid(mdstat->devnm)) { |
| for (retry = 0; retry < 3; retry++) { |
| usleep(3000); |
| rv = load_and_parse_mpb(fd, super, devname, 0); |
| if (rv != 3) |
| break; |
| } |
| } |
| |
| free_mdstat(mdstat); |
| } |
| |
| if (rv) { |
| if (devname) |
| pr_err("Failed to load all information sections on %s\n", devname); |
| free_imsm(super); |
| return rv; |
| } |
| |
| st->sb = super; |
| if (st->ss == NULL) { |
| st->ss = &super_imsm; |
| st->minor_version = 0; |
| st->max_devs = IMSM_MAX_DEVICES; |
| } |
| |
| /* load migration record */ |
| if (load_imsm_migr_rec(super) == 0) { |
| /* Check for unsupported migration features */ |
| if (check_mpb_migr_compatibility(super) != 0) { |
| pr_err("Unsupported migration detected"); |
| if (devname) |
| fprintf(stderr, " on %s\n", devname); |
| else |
| fprintf(stderr, " (IMSM).\n"); |
| return 3; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static __u16 info_to_blocks_per_strip(mdu_array_info_t *info) |
| { |
| if (info->level == 1) |
| return 128; |
| return info->chunk_size >> 9; |
| } |
| |
| static unsigned long long info_to_blocks_per_member(mdu_array_info_t *info, |
| unsigned long long size) |
| { |
| if (info->level == 1) |
| return size * 2; |
| else |
| return (size * 2) & ~(info_to_blocks_per_strip(info) - 1); |
| } |
| |
| static void imsm_update_version_info(struct intel_super *super) |
| { |
| /* update the version and attributes */ |
| struct imsm_super *mpb = super->anchor; |
| char *version; |
| struct imsm_dev *dev; |
| struct imsm_map *map; |
| int i; |
| |
| for (i = 0; i < mpb->num_raid_devs; i++) { |
| dev = get_imsm_dev(super, i); |
| map = get_imsm_map(dev, MAP_0); |
| if (__le32_to_cpu(dev->size_high) > 0) |
| mpb->attributes |= MPB_ATTRIB_2TB; |
| |
| /* FIXME detect when an array spans a port multiplier */ |
| #if 0 |
| mpb->attributes |= MPB_ATTRIB_PM; |
| #endif |
| |
| if (mpb->num_raid_devs > 1 || |
| mpb->attributes != MPB_ATTRIB_CHECKSUM_VERIFY) { |
| version = MPB_VERSION_ATTRIBS; |
| switch (get_imsm_raid_level(map)) { |
| case 0: mpb->attributes |= MPB_ATTRIB_RAID0; break; |
| case 1: mpb->attributes |= MPB_ATTRIB_RAID1; break; |
| case 10: mpb->attributes |= MPB_ATTRIB_RAID10; break; |
| case 5: mpb->attributes |= MPB_ATTRIB_RAID5; break; |
| } |
| } else { |
| if (map->num_members >= 5) |
| version = MPB_VERSION_5OR6_DISK_ARRAY; |
| else if (dev->status == DEV_CLONE_N_GO) |
| version = MPB_VERSION_CNG; |
| else if (get_imsm_raid_level(map) == 5) |
| version = MPB_VERSION_RAID5; |
| else if (map->num_members >= 3) |
| version = MPB_VERSION_3OR4_DISK_ARRAY; |
| else if (get_imsm_raid_level(map) == 1) |
| version = MPB_VERSION_RAID1; |
| else |
| version = MPB_VERSION_RAID0; |
| } |
| strcpy(((char *) mpb->sig) + strlen(MPB_SIGNATURE), version); |
| } |
| } |
| |
| static int check_name(struct intel_super *super, char *name, int quiet) |
| { |
| struct imsm_super *mpb = super->anchor; |
| char *reason = NULL; |
| char *start = name; |
| size_t len = strlen(name); |
| int i; |
| |
| if (len > 0) { |
| while (isspace(start[len - 1])) |
| start[--len] = 0; |
| while (*start && isspace(*start)) |
| ++start, --len; |
| memmove(name, start, len + 1); |
| } |
| |
| if (len > MAX_RAID_SERIAL_LEN) |
| reason = "must be 16 characters or less"; |
| else if (len == 0) |
| reason = "must be a non-empty string"; |
| |
| for (i = 0; i < mpb->num_raid_devs; i++) { |
| struct imsm_dev *dev = get_imsm_dev(super, i); |
| |
| if (strncmp((char *) dev->volume, name, MAX_RAID_SERIAL_LEN) == 0) { |
| reason = "already exists"; |
| break; |
| } |
| } |
| |
| if (reason && !quiet) |
| pr_err("imsm volume name %s\n", reason); |
| |
| return !reason; |
| } |
| |
| static int init_super_imsm_volume(struct supertype *st, mdu_array_info_t *info, |
| struct shape *s, char *name, |
| char *homehost, int *uuid, |
| long long data_offset) |
| { |
| /* We are creating a volume inside a pre-existing container. |
| * so st->sb is already set. |
| */ |
| struct intel_super *super = st->sb; |
| unsigned int sector_size = super->sector_size; |
| struct imsm_super *mpb = super->anchor; |
| struct intel_dev *dv; |
| struct imsm_dev *dev; |
| struct imsm_vol *vol; |
| struct imsm_map *map; |
| int idx = mpb->num_raid_devs; |
| int i; |
| int namelen; |
| unsigned long long array_blocks; |
| size_t size_old, size_new; |
| unsigned long long num_data_stripes; |
| unsigned int data_disks; |
| unsigned long long size_per_member; |
| |
| if (super->orom && mpb->num_raid_devs >= super->orom->vpa) { |
| pr_err("This imsm-container already has the maximum of %d volumes\n", super->orom->vpa); |
| return 0; |
| } |
| |
| /* ensure the mpb is large enough for the new data */ |
| size_old = __le32_to_cpu(mpb->mpb_size); |
| size_new = disks_to_mpb_size(info->nr_disks); |
| if (size_new > size_old) { |
| void *mpb_new; |
| size_t size_round = ROUND_UP(size_new, sector_size); |
| |
| if (posix_memalign(&mpb_new, sector_size, size_round) != 0) { |
| pr_err("could not allocate new mpb\n"); |
| return 0; |
| } |
| if (posix_memalign(&super->migr_rec_buf, MAX_SECTOR_SIZE, |
| MIGR_REC_BUF_SECTORS* |
| MAX_SECTOR_SIZE) != 0) { |
| pr_err("could not allocate migr_rec buffer\n"); |
| free(super->buf); |
| free(super); |
| free(mpb_new); |
| return 0; |
| } |
| memcpy(mpb_new, mpb, size_old); |
| free(mpb); |
| mpb = mpb_new; |
| super->anchor = mpb_new; |
| mpb->mpb_size = __cpu_to_le32(size_new); |
| memset(mpb_new + size_old, 0, size_round - size_old); |
| super->len = size_round; |
| } |
| super->current_vol = idx; |
| |
| /* handle 'failed_disks' by either: |
| * a) create dummy disk entries in the table if this the first |
| * volume in the array. We add them here as this is the only |
| * opportunity to add them. add_to_super_imsm_volume() |
| * handles the non-failed disks and continues incrementing |
| * mpb->num_disks. |
| * b) validate that 'failed_disks' matches the current number |
| * of missing disks if the container is populated |
| */ |
| if (super->current_vol == 0) { |
| mpb->num_disks = 0; |
| for (i = 0; i < info->failed_disks; i++) { |
| struct imsm_disk *disk; |
| |
| mpb->num_disks++; |
| disk = __get_imsm_disk(mpb, i); |
| disk->status = CONFIGURED_DISK | FAILED_DISK; |
| disk->scsi_id = __cpu_to_le32(~(__u32)0); |
| snprintf((char *) disk->serial, MAX_RAID_SERIAL_LEN, |
| "missing:%d", (__u8)i); |
| } |
| find_missing(super); |
| } else { |
| int missing = 0; |
| struct dl *d; |
| |
| for (d = super->missing; d; d = d->next) |
| missing++; |
| if (info->failed_disks > missing) { |
| pr_err("unable to add 'missing' disk to container\n"); |
| return 0; |
| } |
| } |
| |
| if (!check_name(super, name, 0)) |
| return 0; |
| dv = xmalloc(sizeof(*dv)); |
| dev = xcalloc(1, sizeof(*dev) + sizeof(__u32) * (info->raid_disks - 1)); |
| /* |
| * Explicitly allow truncating to not confuse gcc's |
| * -Werror=stringop-truncation |
| */ |
| namelen = min((int) strlen(name), MAX_RAID_SERIAL_LEN); |
| memcpy(dev->volume, name, namelen); |
| array_blocks = calc_array_size(info->level, info->raid_disks, |
| info->layout, info->chunk_size, |
| s->size * BLOCKS_PER_KB); |
| data_disks = get_data_disks(info->level, info->layout, |
| info->raid_disks); |
| array_blocks = round_size_to_mb(array_blocks, data_disks); |
| size_per_member = array_blocks / data_disks; |
| |
| set_imsm_dev_size(dev, array_blocks); |
| dev->status = (DEV_READ_COALESCING | DEV_WRITE_COALESCING); |
| vol = &dev->vol; |
| vol->migr_state = 0; |
| set_migr_type(dev, MIGR_INIT); |
| vol->dirty = !info->state; |
| set_vol_curr_migr_unit(dev, 0); |
| map = get_imsm_map(dev, MAP_0); |
| set_pba_of_lba0(map, super->create_offset); |
| map->blocks_per_strip = __cpu_to_le16(info_to_blocks_per_strip(info)); |
| map->failed_disk_num = ~0; |
| if (info->level > 0) |
| map->map_state = (info->state ? IMSM_T_STATE_NORMAL |
| : IMSM_T_STATE_UNINITIALIZED); |
| else |
| map->map_state = info->failed_disks ? IMSM_T_STATE_FAILED : |
| IMSM_T_STATE_NORMAL; |
| map->ddf = 1; |
| |
| if (info->level == 1 && info->raid_disks > 2) { |
| free(dev); |
| free(dv); |
| pr_err("imsm does not support more than 2 disksin a raid1 volume\n"); |
| return 0; |
| } |
| |
| map->raid_level = info->level; |
| if (info->level == 10) { |
| map->raid_level = 1; |
| map->num_domains = info->raid_disks / 2; |
| } else if (info->level == 1) |
| map->num_domains = info->raid_disks; |
| else |
| map->num_domains = 1; |
| |
| /* info->size is only int so use the 'size' parameter instead */ |
| num_data_stripes = size_per_member / info_to_blocks_per_strip(info); |
| num_data_stripes /= map->num_domains; |
| set_num_data_stripes(map, num_data_stripes); |
| |
| size_per_member += NUM_BLOCKS_DIRTY_STRIPE_REGION; |
| set_blocks_per_member(map, info_to_blocks_per_member(info, |
| size_per_member / |
| BLOCKS_PER_KB)); |
| |
| map->num_members = info->raid_disks; |
| for (i = 0; i < map->num_members; i++) { |
| /* initialized in add_to_super */ |
| set_imsm_ord_tbl_ent(map, i, IMSM_ORD_REBUILD); |
| } |
| mpb->num_raid_devs++; |
| mpb->num_raid_devs_created++; |
| dev->my_vol_raid_dev_num = mpb->num_raid_devs_created; |
| |
| if (s->consistency_policy <= CONSISTENCY_POLICY_RESYNC) { |
| dev->rwh_policy = RWH_MULTIPLE_OFF; |
| } else if (s->consistency_policy == CONSISTENCY_POLICY_PPL) { |
| dev->rwh_policy = RWH_MULTIPLE_DISTRIBUTED; |
| } else { |
| free(dev); |
| free(dv); |
| pr_err("imsm does not support consistency policy %s\n", |
| map_num(consistency_policies, s->consistency_policy)); |
| return 0; |
| } |
| |
| dv->dev = dev; |
| dv->index = super->current_vol; |
| dv->next = super->devlist; |
| super->devlist = dv; |
| |
| imsm_update_version_info(super); |
| |
| return 1; |
| } |
| |
| static int init_super_imsm(struct supertype *st, mdu_array_info_t *info, |
| struct shape *s, char *name, |
| char *homehost, int *uuid, |
| unsigned long long data_offset) |
| { |
| /* This is primarily called by Create when creating a new array. |
| * We will then get add_to_super called for each component, and then |
| * write_init_super called to write it out to each device. |
| * For IMSM, Create can create on fresh devices or on a pre-existing |
| * array. |
| * To create on a pre-existing array a different method will be called. |
| * This one is just for fresh drives. |
| */ |
| struct intel_super *super; |
| struct imsm_super *mpb; |
| size_t mpb_size; |
| char *version; |
| |
| if (data_offset != INVALID_SECTORS) { |
| pr_err("data-offset not supported by imsm\n"); |
| return 0; |
| } |
| |
| if (st->sb) |
| return init_super_imsm_volume(st, info, s, name, homehost, uuid, |
| data_offset); |
| |
| if (info) |
| mpb_size = disks_to_mpb_size(info->nr_disks); |
| else |
| mpb_size = MAX_SECTOR_SIZE; |
| |
| super = alloc_super(); |
| if (super && |
| posix_memalign(&super->buf, MAX_SECTOR_SIZE, mpb_size) != 0) { |
| free_imsm(super); |
| super = NULL; |
| } |
| if (!super) { |
| pr_err("could not allocate superblock\n"); |
| return 0; |
| } |
| if (posix_memalign(&super->migr_rec_buf, MAX_SECTOR_SIZE, |
| MIGR_REC_BUF_SECTORS*MAX_SECTOR_SIZE) != 0) { |
| pr_err("could not allocate migr_rec buffer\n"); |
| free(super->buf); |
| free_imsm(super); |
| return 0; |
| } |
| memset(super->buf, 0, mpb_size); |
| mpb = super->buf; |
| mpb->mpb_size = __cpu_to_le32(mpb_size); |
| st->sb = super; |
| |
| if (info == NULL) { |
| /* zeroing superblock */ |
| return 0; |
| } |
| |
| mpb->attributes = MPB_ATTRIB_CHECKSUM_VERIFY; |
| |
| version = (char *) mpb->sig; |
| strcpy(version, MPB_SIGNATURE); |
| version += strlen(MPB_SIGNATURE); |
| strcpy(version, MPB_VERSION_RAID0); |
| |
| return 1; |
| } |
| |
| static int drive_validate_sector_size(struct intel_super *super, struct dl *dl) |
| { |
| unsigned int member_sector_size; |
| |
| if (dl->fd < 0) { |
| pr_err("Invalid file descriptor for %s\n", dl->devname); |
| return 0; |
| } |
| |
| if (!get_dev_sector_size(dl->fd, dl->devname, &member_sector_size)) |
| return 0; |
| if (member_sector_size != super->sector_size) |
| return 0; |
| return 1; |
| } |
| |
| static int add_to_super_imsm_volume(struct supertype *st, mdu_disk_info_t *dk, |
| int fd, char *devname) |
| { |
| struct intel_super *super = st->sb; |
| struct imsm_super *mpb = super->anchor; |
| struct imsm_disk *_disk; |
| struct imsm_dev *dev; |
| struct imsm_map *map; |
| struct dl *dl, *df; |
| int slot; |
| |
| dev = get_imsm_dev(super, super->current_vol); |
| map = get_imsm_map(dev, MAP_0); |
| |
| if (! (dk->state & (1<<MD_DISK_SYNC))) { |
| pr_err("%s: Cannot add spare devices to IMSM volume\n", |
| devname); |
| return 1; |
| } |
| |
| if (fd == -1) { |
| /* we're doing autolayout so grab the pre-marked (in |
| * validate_geometry) raid_disk |
| */ |
| for (dl = super->disks; dl; dl = dl->next) |
| if (dl->raiddisk == dk->raid_disk) |
| break; |
| } else { |
| for (dl = super->disks; dl ; dl = dl->next) |
| if (dl->major == dk->major && |
| dl->minor == dk->minor) |
| break; |
| } |
| |
| if (!dl) { |
| pr_err("%s is not a member of the same container\n", devname); |
| return 1; |
| } |
| |
| if (mpb->num_disks == 0) |
| if (!get_dev_sector_size(dl->fd, dl->devname, |
| &super->sector_size)) |
| return 1; |
| |
| if (!drive_validate_sector_size(super, dl)) { |
| pr_err("Combining drives of different sector size in one volume is not allowed\n"); |
| return 1; |
| } |
| |
| /* add a pristine spare to the metadata */ |
| if (dl->index < 0) { |
| dl->index = super->anchor->num_disks; |
| super->anchor->num_disks++; |
| } |
| /* Check the device has not already been added */ |
| slot = get_imsm_disk_slot(map, dl->index); |
| if (slot >= 0 && |
| (get_imsm_ord_tbl_ent(dev, slot, MAP_X) & IMSM_ORD_REBUILD) == 0) { |
| pr_err("%s has been included in this array twice\n", |
| devname); |
| return 1; |
| } |
| set_imsm_ord_tbl_ent(map, dk->raid_disk, dl->index); |
| dl->disk.status = CONFIGURED_DISK; |
| |
| /* update size of 'missing' disks to be at least as large as the |
| * largest acitve member (we only have dummy missing disks when |
| * creating the first volume) |
| */ |
| if (super->current_vol == 0) { |
| for (df = super->missing; df; df = df->next) { |
| if (total_blocks(&dl->disk) > total_blocks(&df->disk)) |
| set_total_blocks(&df->disk, total_blocks(&dl->disk)); |
| _disk = __get_imsm_disk(mpb, df->index); |
| *_disk = df->disk; |
| } |
| } |
| |
| /* refresh unset/failed slots to point to valid 'missing' entries */ |
| for (df = super->missing; df; df = df->next) |
| for (slot = 0; slot < mpb->num_disks; slot++) { |
| __u32 ord = get_imsm_ord_tbl_ent(dev, slot, MAP_X); |
| |
| if ((ord & IMSM_ORD_REBUILD) == 0) |
| continue; |
| set_imsm_ord_tbl_ent(map, slot, df->index | IMSM_ORD_REBUILD); |
| if (is_gen_migration(dev)) { |
| struct imsm_map *map2 = get_imsm_map(dev, |
| MAP_1); |
| int slot2 = get_imsm_disk_slot(map2, df->index); |
| if (slot2 < map2->num_members && slot2 >= 0) { |
| __u32 ord2 = get_imsm_ord_tbl_ent(dev, |
| slot2, |
| MAP_1); |
| if ((unsigned)df->index == |
| ord_to_idx(ord2)) |
| set_imsm_ord_tbl_ent(map2, |
| slot2, |
| df->index | |
| IMSM_ORD_REBUILD); |
| } |
| } |
| dprintf("set slot:%d to missing disk:%d\n", slot, df->index); |
| break; |
| } |
| |
| /* if we are creating the first raid device update the family number */ |
| if (super->current_vol == 0) { |
| __u32 sum; |
| struct imsm_dev *_dev = __get_imsm_dev(mpb, 0); |
| |
| _disk = __get_imsm_disk(mpb, dl->index); |
| if (!_dev || !_disk) { |
| pr_err("BUG mpb setup error\n"); |
| return 1; |
| } |
| *_dev = *dev; |
| *_disk = dl->disk; |
| sum = random32(); |
| sum += __gen_imsm_checksum(mpb); |
| mpb->family_num = __cpu_to_le32(sum); |
| mpb->orig_family_num = mpb->family_num; |
| mpb->creation_time = __cpu_to_le64((__u64)time(NULL)); |
| } |
| super->current_disk = dl; |
| return 0; |
| } |
| |
| /* mark_spare() |
| * Function marks disk as spare and restores disk serial |
| * in case it was previously marked as failed by takeover operation |
| * reruns: |
| * -1 : critical error |
| * 0 : disk is marked as spare but serial is not set |
| * 1 : success |
| */ |
| int mark_spare(struct dl *disk) |
| { |
| __u8 serial[MAX_RAID_SERIAL_LEN]; |
| int ret_val = -1; |
| |
| if (!disk) |
| return ret_val; |
| |
| ret_val = 0; |
| if (!imsm_read_serial(disk->fd, NULL, serial, MAX_RAID_SERIAL_LEN)) { |
| /* Restore disk serial number, because takeover marks disk |
| * as failed and adds to serial ':0' before it becomes |
| * a spare disk. |
| */ |
| serialcpy(disk->serial, serial); |
| serialcpy(disk->disk.serial, serial); |
| ret_val = 1; |
| } |
| disk->disk.status = SPARE_DISK; |
| disk->index = -1; |
| |
| return ret_val; |
| } |
| |
| |
| static int write_super_imsm_spare(struct intel_super *super, struct dl *d); |
| |
| static int add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dk, |
| int fd, char *devname, |
| unsigned long long data_offset) |
| { |
| struct intel_super *super = st->sb; |
| struct dl *dd; |
| unsigned long long size; |
| unsigned int member_sector_size; |
| __u32 id; |
| int rv; |
| struct stat stb; |
| |
| /* If we are on an RAID enabled platform check that the disk is |
| * attached to the raid controller. |
| * We do not need to test disks attachment for container based additions, |
| * they shall be already tested when container was created/assembled. |
| */ |
| rv = find_intel_hba_capability(fd, super, devname); |
| /* no orom/efi or non-intel hba of the disk */ |
| if (rv != 0) { |
| dprintf("capability: %p fd: %d ret: %d\n", |
| super->orom, fd, rv); |
| return 1; |
| } |
| |
| if (super->current_vol >= 0) |
| return add_to_super_imsm_volume(st, dk, fd, devname); |
| |
| fstat(fd, &stb); |
| dd = xcalloc(sizeof(*dd), 1); |
| dd->major = major(stb.st_rdev); |
| dd->minor = minor(stb.st_rdev); |
| dd->devname = devname ? xstrdup(devname) : NULL; |
| dd->fd = fd; |
| dd->e = NULL; |
| dd->action = DISK_ADD; |
| rv = imsm_read_serial(fd, devname, dd->serial, MAX_RAID_SERIAL_LEN); |
| if (rv) { |
| pr_err("failed to retrieve scsi serial, aborting\n"); |
| if (dd->devname) |
| free(dd->devname); |
| free(dd); |
| abort(); |
| } |
| if (super->hba && ((super->hba->type == SYS_DEV_NVME) || |
| (super->hba->type == SYS_DEV_VMD))) { |
| int i; |
| char *devpath = diskfd_to_devpath(fd); |
| char controller_path[PATH_MAX]; |
| char *controller_name; |
| |
| if (!devpath) { |
| pr_err("failed to get devpath, aborting\n"); |
| if (dd->devname) |
| free(dd->devname); |
| free(dd); |
| return 1; |
| } |
| |
| snprintf(controller_path, PATH_MAX-1, "%s/device", devpath); |
| |
| controller_name = basename(devpath); |
| if (is_multipath_nvme(fd)) |
| pr_err("%s controller supports Multi-Path I/O, Intel (R) VROC does not support multipathing\n", controller_name); |
| |
| free(devpath); |
| |
| if (!imsm_is_nvme_supported(dd->fd, 1)) { |
| if (dd->devname) |
| free(dd->devname); |
| free(dd); |
| return 1; |
| } |
| |
| if (devpath_to_vendor(controller_path) == 0x8086) { |
| /* |
| * If Intel's NVMe drive has serial ended with |
| * "-A","-B","-1" or "-2" it means that this is "x8" |
| * device (double drive on single PCIe card). |
| * User should be warned about potential data loss. |
| */ |
| for (i = MAX_RAID_SERIAL_LEN-1; i > 0; i--) { |
| /* Skip empty character at the end */ |
| if (dd->serial[i] == 0) |
| continue; |
| |
| if (((dd->serial[i] == 'A') || |
| (dd->serial[i] == 'B') || |
| (dd->serial[i] == '1') || |
| (dd->serial[i] == '2')) && |
| (dd->serial[i-1] == '-')) |
| pr_err("\tThe action you are about to take may put your data at risk.\n" |
| "\tPlease note that x8 devices may consist of two separate x4 devices " |
| "located on a single PCIe port.\n" |
| "\tRAID 0 is the only supported configuration for this type of x8 device.\n"); |
| break; |
| } |
| } else if (super->hba->type == SYS_DEV_VMD && super->orom && |
| !imsm_orom_has_tpv_support(super->orom)) { |
| pr_err("\tPlatform configuration does not support non-Intel NVMe drives.\n" |
| "\tPlease refer to Intel(R) RSTe/VROC user guide.\n"); |
| free(dd->devname); |
| free(dd); |
| return 1; |
| } |
| } |
| |
| get_dev_size(fd, NULL, &size); |
| get_dev_sector_size(fd, NULL, &member_sector_size); |
| |
| if (super->sector_size == 0) { |
| /* this a first device, so sector_size is not set yet */ |
| super->sector_size = member_sector_size; |
| } |
| |
| /* clear migr_rec when adding disk to container */ |
| memset(super->migr_rec_buf, 0, MIGR_REC_BUF_SECTORS*MAX_SECTOR_SIZE); |
| if (lseek64(fd, size - MIGR_REC_SECTOR_POSITION*member_sector_size, |
| SEEK_SET) >= 0) { |
| if ((unsigned int)write(fd, super->migr_rec_buf, |
| MIGR_REC_BUF_SECTORS*member_sector_size) != |
| MIGR_REC_BUF_SECTORS*member_sector_size) |
| perror("Write migr_rec failed"); |
| } |
| |
| size /= 512; |
| serialcpy(dd->disk.serial, dd->serial); |
| set_total_blocks(&dd->disk, size); |
| if (__le32_to_cpu(dd->disk.total_blocks_hi) > 0) { |
| struct imsm_super *mpb = super->anchor; |
| mpb->attributes |= MPB_ATTRIB_2TB_DISK; |
| } |
| mark_spare(dd); |
| if (sysfs_disk_to_scsi_id(fd, &id) == 0) |
| dd->disk.scsi_id = __cpu_to_le32(id); |
| else |
| dd->disk.scsi_id = __cpu_to_le32(0); |
| |
| if (st->update_tail) { |
| dd->next = super->disk_mgmt_list; |
| super->disk_mgmt_list = dd; |
| } else { |
| /* this is called outside of mdmon |
| * write initial spare metadata |
| * mdmon will overwrite it. |
| */ |
| dd->next = super->disks; |
| super->disks = dd; |
| write_super_imsm_spare(super, dd); |
| } |
| |
| return 0; |
| } |
| |
| static int remove_from_super_imsm(struct supertype *st, mdu_disk_info_t *dk) |
| { |
| struct intel_super *super = st->sb; |
| struct dl *dd; |
| |
| /* remove from super works only in mdmon - for communication |
| * manager - monitor. Check if communication memory buffer |
| * is prepared. |
| */ |
| if (!st->update_tail) { |
| pr_err("shall be used in mdmon context only\n"); |
| return 1; |
| } |
| dd = xcalloc(1, sizeof(*dd)); |
| dd->major = dk->major; |
| dd->minor = dk->minor; |
| dd->fd = -1; |
| mark_spare(dd); |
| dd->action = DISK_REMOVE; |
| |
| dd->next = super->disk_mgmt_list; |
| super->disk_mgmt_list = dd; |
| |
| return 0; |
| } |
| |
| static int store_imsm_mpb(int fd, struct imsm_super *mpb); |
| |
| static union { |
| char buf[MAX_SECTOR_SIZE]; |
| struct imsm_super anchor; |
| } spare_record __attribute__ ((aligned(MAX_SECTOR_SIZE))); |
| |
| |
| static int write_super_imsm_spare(struct intel_super *super, struct dl *d) |
| { |
| struct imsm_super *mpb = super->anchor; |
| struct imsm_super *spare = &spare_record.anchor; |
| __u32 sum; |
| |
| if (d->index != -1) |
| return 1; |
| |
| spare->mpb_size = __cpu_to_le32(sizeof(struct imsm_super)); |
| spare->generation_num = __cpu_to_le32(1UL); |
| spare->attributes = MPB_ATTRIB_CHECKSUM_VERIFY; |
| spare->num_disks = 1; |
| spare->num_raid_devs = 0; |
| spare->cache_size = mpb->cache_size; |
| spare->pwr_cycle_count = __cpu_to_le32(1); |
| |
| snprintf((char *) spare->sig, MAX_SIGNATURE_LENGTH, |
| MPB_SIGNATURE MPB_VERSION_RAID0); |
| |
| spare->disk[0] = d->disk; |
| if (__le32_to_cpu(d->disk.total_blocks_hi) > 0) |
| spare->attributes |= MPB_ATTRIB_2TB_DISK; |
| |
| if (super->sector_size == 4096) |
| convert_to_4k_imsm_disk(&spare->disk[0]); |
| |
| sum = __gen_imsm_checksum(spare); |
| spare->family_num = __cpu_to_le32(sum); |
| spare->orig_family_num = 0; |
| sum = __gen_imsm_checksum(spare); |
| spare->check_sum = __cpu_to_le32(sum); |
| |
| if (store_imsm_mpb(d->fd, spare)) { |
| pr_err("failed for device %d:%d %s\n", |
| d->major, d->minor, strerror(errno)); |
| return 1; |
| } |
| |
| return 0; |
| } |
| /* spare records have their own family number and do not have any defined raid |
| * devices |
| */ |
| static int write_super_imsm_spares(struct intel_super *super, int doclose) |
| { |
| struct dl *d; |
| |
| for (d = super->disks; d; d = d->next) { |
| if (d->index != -1) |
| continue; |
| |
| if (write_super_imsm_spare(super, d)) |
| return 1; |
| |
| if (doclose) { |
| close(d->fd); |
| d->fd = -1; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int write_super_imsm(struct supertype *st, int doclose) |
| { |
| struct intel_super *super = st->sb; |
| unsigned int sector_size = super->sector_size; |
| struct imsm_super *mpb = super->anchor; |
| struct dl *d; |
| __u32 generation; |
| __u32 sum; |
| int spares = 0; |
| int i; |
| __u32 mpb_size = sizeof(struct imsm_super) - sizeof(struct imsm_disk); |
| int num_disks = 0; |
| int clear_migration_record = 1; |
| __u32 bbm_log_size; |
| |
| /* 'generation' is incremented everytime the metadata is written */ |
| generation = __le32_to_cpu(mpb->generation_num); |
| generation++; |
| mpb->generation_num = __cpu_to_le32(generation); |
| |
| /* fix up cases where previous mdadm releases failed to set |
| * orig_family_num |
| */ |
| if (mpb->orig_family_num == 0) |
| mpb->orig_family_num = mpb->family_num; |
| |
| for (d = super->disks; d; d = d->next) { |
| if (d->index == -1) |
| spares++; |
| else { |
| mpb->disk[d->index] = d->disk; |
| num_disks++; |
| } |
| } |
| for (d = super->missing; d; d = d->next) { |
| mpb->disk[d->index] = d->disk; |
| num_disks++; |
| } |
| mpb->num_disks = num_disks; |
| mpb_size += sizeof(struct imsm_disk) * mpb->num_disks; |
| |
| for (i = 0; i < mpb->num_raid_devs; i++) { |
| struct imsm_dev *dev = __get_imsm_dev(mpb, i); |
| struct imsm_dev *dev2 = get_imsm_dev(super, i); |
| if (dev && dev2) { |
| imsm_copy_dev(dev, dev2); |
| mpb_size += sizeof_imsm_dev(dev, 0); |
| } |
| if (is_gen_migration(dev2)) |
| clear_migration_record = 0; |
| } |
| |
| bbm_log_size = get_imsm_bbm_log_size(super->bbm_log); |
| |
| if (bbm_log_size) { |
| memcpy((void *)mpb + mpb_size, super->bbm_log, bbm_log_size); |
| mpb->attributes |= MPB_ATTRIB_BBM; |
| } else |
| mpb->attributes &= ~MPB_ATTRIB_BBM; |
| |
| super->anchor->bbm_log_size = __cpu_to_le32(bbm_log_size); |
| mpb_size += bbm_log_size; |
| mpb->mpb_size = __cpu_to_le32(mpb_size); |
| |
| #ifdef DEBUG |
| assert(super->len == 0 || mpb_size <= super->len); |
| #endif |
| |
| /* recalculate checksum */ |
| sum = __gen_imsm_checksum(mpb); |
| mpb->check_sum = __cpu_to_le32(sum); |
| |
| if (super->clean_migration_record_by_mdmon) { |
| clear_migration_record = 1; |
| super->clean_migration_record_by_mdmon = 0; |
| } |
| if (clear_migration_record) |
| memset(super->migr_rec_buf, 0, |
| MIGR_REC_BUF_SECTORS*MAX_SECTOR_SIZE); |
| |
| if (sector_size == 4096) |
| convert_to_4k(super); |
| |
| /* write the mpb for disks that compose raid devices */ |
| for (d = super->disks; d ; d = d->next) { |
| if (d->index < 0 || is_failed(&d->disk)) |
| continue; |
| |
| if (clear_migration_record) { |
| unsigned long long dsize; |
| |
| get_dev_size(d->fd, NULL, &dsize); |
| if (lseek64(d->fd, dsize - sector_size, |
| SEEK_SET) >= 0) { |
| if ((unsigned int)write(d->fd, |
| super->migr_rec_buf, |
| MIGR_REC_BUF_SECTORS*sector_size) != |
| MIGR_REC_BUF_SECTORS*sector_size) |
| perror("Write migr_rec failed"); |
| } |
| } |
| |
| if (store_imsm_mpb(d->fd, mpb)) |
| fprintf(stderr, |
| "failed for device %d:%d (fd: %d)%s\n", |
| d->major, d->minor, |
| d->fd, strerror(errno)); |
| |
| if (doclose) { |
| close(d->fd); |
| d->fd = -1; |
| } |
| } |
| |
| if (spares) |
| return write_super_imsm_spares(super, doclose); |
| |
| return 0; |
| } |
| |
| static int create_array(struct supertype *st, int dev_idx) |
| { |
| size_t len; |
| struct imsm_update_create_array *u; |
| struct intel_super *super = st->sb; |
| struct imsm_dev *dev = get_imsm_dev(super, dev_idx); |
| struct imsm_map *map = get_imsm_map(dev, MAP_0); |
| struct disk_info *inf; |
| struct imsm_disk *disk; |
| int i; |
| |
| len = sizeof(*u) - sizeof(*dev) + sizeof_imsm_dev(dev, 0) + |
| sizeof(*inf) * map->num_members; |
| u = xmalloc(len); |
| u->type = update_create_array; |
| u->dev_idx = dev_idx; |
| imsm_copy_dev(&u->dev, dev); |
| inf = get_disk_info(u); |
| for (i = 0; i < map->num_members; i++) { |
| int idx = get_imsm_disk_idx(dev, i, MAP_X); |
| |
| disk = get_imsm_disk(super, idx); |
| if (!disk) |
| disk = get_imsm_missing(super, idx); |
| serialcpy(inf[i].serial, disk->serial); |
| } |
| append_metadata_update(st, u, len); |
| |
| return 0; |
| } |
| |
| static int mgmt_disk(struct supertype *st) |
| { |
| struct intel_super *super = st->sb; |
| size_t len; |
| struct imsm_update_add_remove_disk *u; |
| |
| if (!super->disk_mgmt_list) |
| return 0; |
| |
| len = sizeof(*u); |
| u = xmalloc(len); |
| u->type = update_add_remove_disk; |
| append_metadata_update(st, u, len); |
| |
| return 0; |
| } |
| |
| __u32 crc32c_le(__u32 crc, unsigned char const *p, size_t len); |
| |
| static int write_ppl_header(unsigned long long ppl_sector, int fd, void *buf) |
| { |
| struct ppl_header *ppl_hdr = buf; |
| int ret; |
| |
| ppl_hdr->checksum = __cpu_to_le32(~crc32c_le(~0, buf, PPL_HEADER_SIZE)); |
| |
| if (lseek64(fd, ppl_sector * 512, SEEK_SET) < 0) { |
| ret = -errno; |
| perror("Failed to seek to PPL header location"); |
| return ret; |
| } |
| |
| if (write(fd, buf, PPL_HEADER_SIZE) != PPL_HEADER_SIZE) { |
| ret = -errno; |
| perror("Write PPL header failed"); |
| return ret; |
| } |
| |
| fsync(fd); |
| |
| return 0; |
| } |
| |
| static int write_init_ppl_imsm(struct supertype *st, struct mdinfo *info, int fd) |
| { |
| struct intel_super *super = st->sb; |
| void *buf; |
| struct ppl_header *ppl_hdr; |
| int ret; |
| |
| /* first clear entire ppl space */ |
| ret = zero_disk_range(fd, info->ppl_sector, info->ppl_size); |
| if (ret) |
| return ret; |
| |
| ret = posix_memalign(&buf, MAX_SECTOR_SIZE, PPL_HEADER_SIZE); |
| if (ret) { |
| pr_err("Failed to allocate PPL header buffer\n"); |
| return -ret; |
| } |
| |
| memset(buf, 0, PPL_HEADER_SIZE); |
| ppl_hdr = buf; |
| memset(ppl_hdr->reserved, 0xff, PPL_HDR_RESERVED); |
| ppl_hdr->signature = __cpu_to_le32(super->anchor->orig_family_num); |
| |
| if (info->mismatch_cnt) { |
| /* |
| * We are overwriting an invalid ppl. Make one entry with wrong |
| * checksum to prevent the kernel from skipping resync. |
| */ |
| ppl_hdr->entries_count = __cpu_to_le32(1); |
| ppl_hdr->entries[0].checksum = ~0; |
| } |
| |
| ret = write_ppl_header(info->ppl_sector, fd, buf); |
| |
| free(buf); |
| return ret; |
| } |
| |
| static int is_rebuilding(struct imsm_dev *dev); |
| |
| static int validate_ppl_imsm(struct supertype *st, struct mdinfo *info, |
| struct mdinfo *disk) |
| { |
| struct intel_super *super = st->sb; |
| struct dl *d; |
| void *buf_orig, *buf, *buf_prev = NULL; |
| int ret = 0; |
| struct ppl_header *ppl_hdr = NULL; |
| __u32 crc; |
| struct imsm_dev *dev; |
| __u32 idx; |
| unsigned int i; |
| unsigned long long ppl_offset = 0; |
| unsigned long long prev_gen_num = 0; |
| |
| if (disk->disk.raid_disk < 0) |
| return 0; |
| |
| dev = get_imsm_dev(super, info->container_member); |
| idx = get_imsm_disk_idx(dev, disk->disk.raid_disk, MAP_0); |
| d = get_imsm_dl_disk(super, idx); |
| |
| if (!d || d->index < 0 || is_failed(&d->disk)) |
| return 0; |
| |
| if (posix_memalign(&buf_orig, MAX_SECTOR_SIZE, PPL_HEADER_SIZE * 2)) { |
| pr_err("Failed to allocate PPL header buffer\n"); |
| return -1; |
| } |
| buf = buf_orig; |
| |
| ret = 1; |
| while (ppl_offset < MULTIPLE_PPL_AREA_SIZE_IMSM) { |
| void *tmp; |
| |
| dprintf("Checking potential PPL at offset: %llu\n", ppl_offset); |
| |
| if (lseek64(d->fd, info->ppl_sector * 512 + ppl_offset, |
| SEEK_SET) < 0) { |
| perror("Failed to seek to PPL header location"); |
| ret = -1; |
| break; |
| } |
| |
| if (read(d->fd, buf, PPL_HEADER_SIZE) != PPL_HEADER_SIZE) { |
| perror("Read PPL header failed"); |
| ret = -1; |
| break; |
| } |
| |
| ppl_hdr = buf; |
| |
| crc = __le32_to_cpu(ppl_hdr->checksum); |
| ppl_hdr->checksum = 0; |
| |
| if (crc != ~crc32c_le(~0, buf, PPL_HEADER_SIZE)) { |
| dprintf("Wrong PPL header checksum on %s\n", |
| d->devname); |
| break; |
| } |
| |
| if (prev_gen_num > __le64_to_cpu(ppl_hdr->generation)) { |
| /* previous was newest, it was already checked */ |
| break; |
| } |
| |
| if ((__le32_to_cpu(ppl_hdr->signature) != |
| super->anchor->orig_family_num)) { |
| dprintf("Wrong PPL header signature on %s\n", |
| d->devname); |
| ret = 1; |
| break; |
| } |
| |
| ret = 0; |
| prev_gen_num = __le64_to_cpu(ppl_hdr->generation); |
| |
| ppl_offset += PPL_HEADER_SIZE; |
| for (i = 0; i < __le32_to_cpu(ppl_hdr->entries_count); i++) |
| ppl_offset += |
| __le32_to_cpu(ppl_hdr->entries[i].pp_size); |
| |
| if (!buf_prev) |
| buf_prev = buf + PPL_HEADER_SIZE; |
| tmp = buf_prev; |
| buf_prev = buf; |
| buf = tmp; |
| } |
| |
| if (buf_prev) { |
| buf = buf_prev; |
| ppl_hdr = buf_prev; |
| } |
| |
| /* |
| * Update metadata to use mutliple PPLs area (1MB). |
| * This is done once for all RAID members |
| */ |
| if (info->consistency_policy == CONSISTENCY_POLICY_PPL && |
| info->ppl_size != (MULTIPLE_PPL_AREA_SIZE_IMSM >> 9)) { |
| char subarray[20]; |
| struct mdinfo *member_dev; |
| |
| sprintf(subarray, "%d", info->container_member); |
| |
| if (mdmon_running(st->container_devnm)) |
| st->update_tail = &st->updates; |
| |
| if (st->ss->update_subarray(st, subarray, "ppl", NULL)) { |
| pr_err("Failed to update subarray %s\n", |
| subarray); |
| } else { |
| if (st->update_tail) |
| flush_metadata_updates(st); |
| else |
| st->ss->sync_metadata(st); |
| info->ppl_size = (MULTIPLE_PPL_AREA_SIZE_IMSM >> 9); |
| for (member_dev = info->devs; member_dev; |
| member_dev = member_dev->next) |
| member_dev->ppl_size = |
| (MULTIPLE_PPL_AREA_SIZE_IMSM >> 9); |
| } |
| } |
| |
| if (ret == 1) { |
| struct imsm_map *map = get_imsm_map(dev, MAP_X); |
| |
| if (map->map_state == IMSM_T_STATE_UNINITIALIZED || |
| (map->map_state == IMSM_T_STATE_NORMAL && |
| !(dev->vol.dirty & RAIDVOL_DIRTY)) || |
| (is_rebuilding(dev) && |
| vol_curr_migr_unit(dev) == 0 && |
| get_imsm_disk_idx(dev, disk->disk.raid_disk, MAP_1) != idx)) |
| ret = st->ss->write_init_ppl(st, info, d->fd); |
| else |
| info->mismatch_cnt++; |
| } else if (ret == 0 && |
| ppl_hdr->entries_count == 0 && |
| is_rebuilding(dev) && |
| info->resync_start == 0) { |
| /* |
| * The header has no entries - add a single empty entry and |
| * rewrite the header to prevent the kernel from going into |
| * resync after an interrupted rebuild. |
| */ |
| ppl_hdr->entries_count = __cpu_to_le32(1); |
| ret = write_ppl_header(info->ppl_sector, d->fd, buf); |
| } |
| |
| free(buf_orig); |
| |
| return ret; |
| } |
| |
| static int write_init_ppl_imsm_all(struct supertype *st, struct mdinfo *info) |
| { |
| struct intel_super *super = st->sb; |
| struct dl *d; |
| int ret = 0; |
| |
| if (info->consistency_policy != CONSISTENCY_POLICY_PPL || |
| info->array.level != 5) |
| return 0; |
| |
| for (d = super->disks; d ; d = d->next) { |
| if (d->index < 0 || is_failed(&d->disk)) |
| continue; |
| |
| ret = st->ss->write_init_ppl(st, info, d->fd); |
| if (ret) |
| break; |
| } |
| |
| return ret; |
| } |
| |
| /******************************************************************************* |
| * Function: write_init_bitmap_imsm_vol |
| * Description: Write a bitmap header and prepares the area for the bitmap. |
| * Parameters: |
| * st : supertype information |
| * vol_idx : the volume index to use |
| * |
| * Returns: |
| * 0 : success |
| * -1 : fail |
| ******************************************************************************/ |
| static int write_init_bitmap_imsm_vol(struct supertype *st, int vol_idx) |
| { |
| struct intel_super *super = st->sb; |
| int prev_current_vol = super->current_vol; |
| struct dl *d; |
| int ret = 0; |
| |
| super->current_vol = vol_idx; |
| for (d = super->disks; d; d = d->next) { |
| if (d->index < 0 || is_failed(&d->disk)) |
| continue; |
| ret = st->ss->write_bitmap(st, d->fd, NoUpdate); |
| if (ret) |
| break; |
| } |
| super->current_vol = prev_current_vol; |
| return ret; |
| } |
| |
| /******************************************************************************* |
| * Function: write_init_bitmap_imsm_all |
| * Description: Write a bitmap header and prepares the area for the bitmap. |
| * Operation is executed for volumes with CONSISTENCY_POLICY_BITMAP. |
| * Parameters: |
| * st : supertype information |
| * info : info about the volume where the bitmap should be written |
| * vol_idx : the volume index to use |
| * |
| * Returns: |
| * 0 : success |
| * -1 : fail |
| ******************************************************************************/ |
| static int write_init_bitmap_imsm_all(struct supertype *st, struct mdinfo *info, |
| int vol_idx) |
| { |
| int ret = 0; |
| |
| if (info && (info->consistency_policy == CONSISTENCY_POLICY_BITMAP)) |
| ret = write_init_bitmap_imsm_vol(st, vol_idx); |
| |
| return ret; |
| } |
| |
| static int write_init_super_imsm(struct supertype *st) |
| { |
| struct intel_super *super = st->sb; |
| int current_vol = super->current_vol; |
| int rv = 0; |
| struct mdinfo info; |
| |
| getinfo_super_imsm(st, &info, NULL); |
| |
| /* we are done with current_vol reset it to point st at the container */ |
| super->current_vol = -1; |
| |
| if (st->update_tail) { |
| /* queue the recently created array / added disk |
| * as a metadata update */ |
| |
| /* determine if we are creating a volume or adding a disk */ |
| if (current_vol < 0) { |
| /* in the mgmt (add/remove) disk case we are running |
| * in mdmon context, so don't close fd's |
| */ |
| rv = mgmt_disk(st); |
| } else { |
| /* adding the second volume to the array */ |
| rv = write_init_ppl_imsm_all(st, &info); |
| if (!rv) |
| rv = write_init_bitmap_imsm_all(st, &info, current_vol); |
| if (!rv) |
| rv = create_array(st, current_vol); |
| } |
| } else { |
| struct dl *d; |
| for (d = super->disks; d; d = d->next) |
| Kill(d->devname, NULL, 0, -1, 1); |
| if (current_vol >= 0) { |
| rv = write_init_ppl_imsm_all(st, &info); |
| if (!rv) |
| rv = write_init_bitmap_imsm_all(st, &info, current_vol); |
| } |
| |
| if (!rv) |
| rv = write_super_imsm(st, 1); |
| } |
| |
| return rv; |
| } |
| |
| static int store_super_imsm(struct supertype *st, int fd) |
| { |
| struct intel_super *super = st->sb; |
| struct imsm_super *mpb = super ? super->anchor : NULL; |
| |
| if (!mpb) |
| return 1; |
| |
| if (super->sector_size == 4096) |
| convert_to_4k(super); |
| return store_imsm_mpb(fd, mpb); |
| } |
| |
| static int validate_geometry_imsm_container(struct supertype *st, int level, |
| int layout, int raiddisks, int chunk, |
| unsigned long long size, |
| unsigned long long data_offset, |
| char *dev, |
| unsigned long long *freesize, |
| int verbose) |
| { |
| int fd; |
| unsigned long long ldsize; |
| struct intel_super *super; |
| int rv = 0; |
| |
| if (level != LEVEL_CONTAINER) |
| return 0; |
| if (!dev) |
| return 1; |
| |
| fd = open(dev, O_RDONLY|O_EXCL, 0); |
| if (fd < 0) { |
| if (verbose > 0) |
| pr_err("imsm: Cannot open %s: %s\n", |
| dev, strerror(errno)); |
| return 0; |
| } |
| if (!get_dev_size(fd, dev, &ldsize)) { |
| close(fd); |
| return 0; |
| } |
| |
| /* capabilities retrieve could be possible |
| * note that there is no fd for the disks in array. |
| */ |
| super = alloc_super(); |
| if (!super) { |
| close(fd); |
| return 0; |
| } |
| if (!get_dev_sector_size(fd, NULL, &super->sector_size)) { |
| close(fd); |
| free_imsm(super); |
| return 0; |
| } |
| |
| rv = find_intel_hba_capability(fd, super, verbose > 0 ? dev : NULL); |
| if (rv != 0) { |
| #if DEBUG |
| char str[256]; |
| fd2devname(fd, str); |
| dprintf("fd: %d %s orom: %p rv: %d raiddisk: %d\n", |
| fd, str, super->orom, rv, raiddisks); |
| #endif |
| /* no orom/efi or non-intel hba of the disk */ |
| close(fd); |
| free_imsm(super); |
| return 0; |
| } |
| close(fd); |
| if (super->orom) { |
| if (raiddisks > super->orom->tds) { |
| if (verbose) |
| pr_err("%d exceeds maximum number of platform supported disks: %d\n", |
| raiddisks, super->orom->tds); |
| free_imsm(super); |
| return 0; |
| } |
| if ((super->orom->attr & IMSM_OROM_ATTR_2TB_DISK) == 0 && |
| (ldsize >> 9) >> 32 > 0) { |
| if (verbose) |
| pr_err("%s exceeds maximum platform supported size\n", dev); |
| free_imsm(super); |
| return 0; |
| } |
| } |
| |
| *freesize = avail_size_imsm(st, ldsize >> 9, data_offset); |
| free_imsm(super); |
| |
| return 1; |
| } |
| |
| static unsigned long long find_size(struct extent *e, int *idx, int num_extents) |
| { |
| const unsigned long long base_start = e[*idx].start; |
| unsigned long long end = base_start + e[*idx].size; |
| int i; |
| |
| if (base_start == end) |
| return 0; |
| |
| *idx = *idx + 1; |
| for (i = *idx; i < num_extents; i++) { |
| /* extend overlapping extents */ |
| if (e[i].start >= base_start && |
| e[i].start <= end) { |
| if (e[i].size == 0) |
| return 0; |
| if (e[i].start + e[i].size > end) |
| end = e[i].start + e[i].size; |
| } else if (e[i].start > end) { |
| *idx = i; |
| break; |
| } |
| } |
| |
| return end - base_start; |
| } |
| |
| static unsigned long long merge_extents(struct intel_super *super, int sum_extents) |
| { |
| /* build a composite disk with all known extents and generate a new |
| * 'maxsize' given the "all disks in an array must share a common start |
| * offset" constraint |
| */ |
| struct extent *e = xcalloc(sum_extents, sizeof(*e)); |
| struct dl *dl; |
| int i, j; |
| int start_extent; |
| unsigned long long pos; |
| unsigned long long start = 0; |
| unsigned long long maxsize; |
| unsigned long reserve; |
| |
| /* coalesce and sort all extents. also, check to see if we need to |
| * reserve space between member arrays |
| */ |
| j = 0; |
| for (dl = super->disks; dl; dl = dl->next) { |
| if (!dl->e) |
| continue; |
| for (i = 0; i < dl->extent_cnt; i++) |
| e[j++] = dl->e[i]; |
| } |
| qsort(e, sum_extents, sizeof(*e), cmp_extent); |
| |
| /* merge extents */ |
| i = 0; |
| j = 0; |
| while (i < sum_extents) { |
| e[j].start = e[i].start; |
| e[j].size = find_size(e, &i, sum_extents); |
| j++; |
| if (e[j-1].size == 0) |
| break; |
| } |
| |
| pos = 0; |
| maxsize = 0; |
| start_extent = 0; |
| i = 0; |
| do { |
| unsigned long long esize; |
| |
| esize = e[i].start - pos; |
| if (esize >= maxsize) { |
| maxsize = esize; |
| start = pos; |
| start_extent = i; |
| } |
| pos = e[i].start + e[i].size; |
| i++; |
| } while (e[i-1].size); |
| free(e); |
| |
| if (maxsize == 0) |
| return 0; |
| |
| /* FIXME assumes volume at offset 0 is the first volume in a |
| * container |
| */ |
| if (start_extent > 0) |
| reserve = IMSM_RESERVED_SECTORS; /* gap between raid regions */ |
| else |
| reserve = 0; |
| |
| if (maxsize < reserve) |
| return 0; |
| |
| super->create_offset = ~((unsigned long long) 0); |
| if (start + reserve > super->create_offset) |
| return 0; /* start overflows create_offset */ |
| super->create_offset = start + reserve; |
| |
| return maxsize - reserve; |
| } |
| |
| static int is_raid_level_supported(const struct imsm_orom *orom, int level, int raiddisks) |
| { |
| if (level < 0 || level == 6 || level == 4) |
| return 0; |
| |
| /* if we have an orom prevent invalid raid levels */ |
| if (orom) |
| switch (level) { |
| case 0: return imsm_orom_has_raid0(orom); |
| case 1: |
| if (raiddisks > 2) |
| return imsm_orom_has_raid1e(orom); |
| return imsm_orom_has_raid1(orom) && raiddisks == 2; |
| case 10: return imsm_orom_has_raid10(orom) && raiddisks == 4; |
| case 5: return imsm_orom_has_raid5(orom) && raiddisks > 2; |
| } |
| else |
| return 1; /* not on an Intel RAID platform so anything goes */ |
| |
| return 0; |
| } |
| |
| static int |
| active_arrays_by_format(char *name, char* hba, struct md_list **devlist, |
| int dpa, int verbose) |
| { |
| struct mdstat_ent *mdstat = mdstat_read(0, 0); |
| struct mdstat_ent *memb; |
| int count = 0; |
| int num = 0; |
| struct md_list *dv; |
| int found; |
| |
| for (memb = mdstat ; memb ; memb = memb->next) { |
| if (memb->metadata_version && |
| (strncmp(memb->metadata_version, "external:", 9) == 0) && |
| (strcmp(&memb->metadata_version[9], name) == 0) && |
| !is_subarray(memb->metadata_version+9) && |
| memb->members) { |
| struct dev_member *dev = memb->members; |
| int fd = -1; |
| while(dev && (fd < 0)) { |
| char *path = xmalloc(strlen(dev->name) + strlen("/dev/") + 1); |
| num = sprintf(path, "%s%s", "/dev/", dev->name); |
| if (num > 0) |
| fd = open(path, O_RDONLY, 0); |
| if (num <= 0 || fd < 0) { |
| pr_vrb("Cannot open %s: %s\n", |
| dev->name, strerror(errno)); |
| } |
| free(path); |
| dev = dev->next; |
| } |
| found = 0; |
| if (fd >= 0 && disk_attached_to_hba(fd, hba)) { |
| struct mdstat_ent *vol; |
| for (vol = mdstat ; vol ; vol = vol->next) { |
| if (vol->active > 0 && |
| vol->metadata_version && |
| is_container_member(vol, memb->devnm)) { |
| found++; |
| count++; |
| } |
| } |
| if (*devlist && (found < dpa)) { |
| dv = xcalloc(1, sizeof(*dv)); |
| dv->devname = xmalloc(strlen(memb->devnm) + strlen("/dev/") + 1); |
| sprintf(dv->devname, "%s%s", "/dev/", memb->devnm); |
| dv->found = found; |
| dv->used = 0; |
| dv->next = *devlist; |
| *devlist = dv; |
| } |
| } |
| if (fd >= 0) |
| close(fd); |
| } |
| } |
| free_mdstat(mdstat); |
| return count; |
| } |
| |
| #ifdef DEBUG_LOOP |
| static struct md_list* |
| get_loop_devices(void) |
| { |
| int i; |
| struct md_list *devlist = NULL; |
| struct md_list *dv; |
| |
| for(i = 0; i < 12; i++) { |
| dv = xcalloc(1, sizeof(*dv)); |
| dv->devname = xmalloc(40); |
| sprintf(dv->devname, "/dev/loop%d", i); |
| dv->next = devlist; |
| devlist = dv; |
| } |
| return devlist; |
| } |
| #endif |
| |
| static struct md_list* |
| get_devices(const char *hba_path) |
| { |
| struct md_list *devlist = NULL; |
| struct md_list *dv; |
| struct dirent *ent; |
| DIR *dir; |
| int err = 0; |
| |
| #if DEBUG_LOOP |
| devlist = get_loop_devices(); |
| return devlist; |
| #endif |
| /* scroll through /sys/dev/block looking for devices attached to |
| * this hba |
| */ |
| dir = opendir("/sys/dev/block"); |
| for (ent = dir ? readdir(dir) : NULL; ent; ent = readdir(dir)) { |
| int fd; |
| char buf[1024]; |
| int major, minor; |
| char *path = NULL; |
| if (sscanf(ent->d_name, "%d:%d", &major, &minor) != 2) |
| continue; |
| path = devt_to_devpath(makedev(major, minor)); |
| if (!path) |
| continue; |
| if (!path_attached_to_hba(path, hba_path)) { |
| free(path); |
| path = NULL; |
| continue; |
| } |
| free(path); |
| path = NULL; |
| fd = dev_open(ent->d_name, O_RDONLY); |
| if (fd >= 0) { |
| fd2devname(fd, buf); |
| close(fd); |
| } else { |
| pr_err("cannot open device: %s\n", |
| ent->d_name); |
| continue; |
| } |
| |
| dv = xcalloc(1, sizeof(*dv)); |
| dv->devname = xstrdup(buf); |
| dv->next = devlist; |
| devlist = dv; |
| } |
| if (err) { |
| while(devlist) { |
| dv = devlist; |
| devlist = devlist->next; |
| free(dv->devname); |
| free(dv); |
| } |
| } |
| closedir(dir); |
| return devlist; |
| } |
| |
| static int |
| count_volumes_list(struct md_list *devlist, char *homehost, |
| int verbose, int *found) |
| { |
| struct md_list *tmpdev; |
| int count = 0; |
| struct supertype *st; |
| |
| /* first walk the list of devices to find a consistent set |
| * that match the criterea, if that is possible. |
| * We flag the ones we like with 'used'. |
| */ |
| *found = 0; |
| st = match_metadata_desc_imsm("imsm"); |
| if (st == NULL) { |
| pr_vrb("cannot allocate memory for imsm supertype\n"); |
| return 0; |
| } |
| |
| for (tmpdev = devlist; tmpdev; tmpdev = tmpdev->next) { |
| char *devname = tmpdev->devname; |
| dev_t rdev; |
| struct supertype *tst; |
| int dfd; |
| if (tmpdev->used > 1) |
| continue; |
| tst = dup_super(st); |
| if (tst == NULL) { |
| pr_vrb("cannot allocate memory for imsm supertype\n"); |
| goto err_1; |
| } |
| tmpdev->container = 0; |
| dfd = dev_open(devname, O_RDONLY|O_EXCL); |
| if (dfd < 0) { |
| dprintf("cannot open device %s: %s\n", |
| devname, strerror(errno)); |
| tmpdev->used = 2; |
| } else if (!fstat_is_blkdev(dfd, devname, &rdev)) { |
| tmpdev->used = 2; |
| } else if (must_be_container(dfd)) { |
| struct supertype *cst; |
| cst = super_by_fd(dfd, NULL); |
| if (cst == NULL) { |
| dprintf("cannot recognize container type %s\n", |
| devname); |
| tmpdev->used = 2; |
| } else if (tst->ss != st->ss) { |
| dprintf("non-imsm container - ignore it: %s\n", |
| devname); |
| tmpdev->used = 2; |
| } else if (!tst->ss->load_container || |
| tst->ss->load_container(tst, dfd, NULL)) |
| tmpdev->used = 2; |
| else { |
| tmpdev->container = 1; |
| } |
| if (cst) |
| cst->ss->free_super(cst); |
| } else { |
| tmpdev->st_rdev = rdev; |
| if (tst->ss->load_super(tst,dfd, NULL)) { |
| dprintf("no RAID superblock on %s\n", |
| devname); |
| tmpdev->used = 2; |
| } else if (tst->ss->compare_super == NULL) { |
| dprintf("Cannot assemble %s metadata on %s\n", |
| tst->ss->name, devname); |
| tmpdev->used = 2; |
| } |
| } |
| if (dfd >= 0) |
| close(dfd); |
| if (tmpdev->used == 2 || tmpdev->used == 4) { |
| /* Ignore unrecognised devices during auto-assembly */ |
| goto loop; |
| } |
| else { |
| struct mdinfo info; |
| tst->ss->getinfo_super(tst, &info, NULL); |
| |
| if (st->minor_version == -1) |
| st->minor_version = tst->minor_version; |
| |
| if (memcmp(info.uuid, uuid_zero, |
| sizeof(int[4])) == 0) { |
| /* this is a floating spare. It cannot define |
| * an array unless there are no more arrays of |
| * this type to be found. It can be included |
| * in an array of this type though. |
| */ |
| tmpdev->used = 3; |
| goto loop; |
| } |
| |
| if (st->ss != tst->ss || |
| st->minor_version != tst->minor_version || |
| st->ss->compare_super(st, tst, 1) != 0) { |
| /* Some mismatch. If exactly one array matches this host, |
| * we can resolve on that one. |
| * Or, if we are auto assembling, we just ignore the second |
| * for now. |
| */ |
| dprintf("superblock on %s doesn't match others - assembly aborted\n", |
| devname); |
| goto loop; |
| } |
| tmpdev->used = 1; |
| *found = 1; |
| dprintf("found: devname: %s\n", devname); |
| } |
| loop: |
| if (tst) |
| tst->ss->free_super(tst); |
| } |
| if (*found != 0) { |
| int err; |
| if ((err = load_super_imsm_all(st, -1, &st->sb, NULL, devlist, 0)) == 0) { |
| struct mdinfo *iter, *head = st->ss->container_content(st, NULL); |
| for (iter = head; iter; iter = iter->next) { |
| dprintf("content->text_version: %s vol\n", |
| iter->text_version); |
| if (iter->array.state & (1<<MD_SB_BLOCK_VOLUME)) { |
| /* do not assemble arrays with unsupported |
| configurations */ |
| dprintf("Cannot activate member %s.\n", |
| iter->text_version); |
| } else |
| count++; |
| } |
| sysfs_free(head); |
| |
| } else { |
| dprintf("No valid super block on device list: err: %d %p\n", |
| err, st->sb); |
| } |
| } else { |
| dprintf("no more devices to examine\n"); |
| } |
| |
| for (tmpdev = devlist; tmpdev; tmpdev = tmpdev->next) { |
| if (tmpdev->used == 1 && tmpdev->found) { |
| if (count) { |
| if (count < tmpdev->found) |
| count = 0; |
| else |
| count -= tmpdev->found; |
| } |
| } |
| if (tmpdev->used == 1) |
| tmpdev->used = 4; |
| } |
| err_1: |
| if (st) |
| st->ss->free_super(st); |
| return count; |
| } |
| |
| static int __count_volumes(char *hba_path, int dpa, int verbose, |
| int cmp_hba_path) |
| { |
| struct sys_dev *idev, *intel_devices = find_intel_devices(); |
| int count = 0; |
| const struct orom_entry *entry; |
| struct devid_list *dv, *devid_list; |
| |
| if (!hba_path) |
| return 0; |
| |
| for (idev = intel_devices; idev; idev = idev->next) { |
| if (strstr(idev->path, hba_path)) |
| break; |
| } |
| |
| if (!idev || !idev->dev_id) |
| return 0; |
| |
| entry = get_orom_entry_by_device_id(idev->dev_id); |
| |
| if (!entry || !entry->devid_list) |
| return 0; |
| |
| devid_list = entry->devid_list; |
| for (dv = devid_list; dv; dv = dv->next) { |
| struct md_list *devlist; |
| struct sys_dev *device = NULL; |
| char *hpath; |
| int found = 0; |
| |
| if (cmp_hba_path) |
| device = device_by_id_and_path(dv->devid, hba_path); |
| else |
| device = device_by_id(dv->devid); |
| |
| if (device) |
| hpath = device->path; |
| else |
| return 0; |
| |
| devlist = get_devices(hpath); |
| /* if no intel devices return zero volumes */ |
| if (devlist == NULL) |
| return 0; |
| |
| count += active_arrays_by_format("imsm", hpath, &devlist, dpa, |
| verbose); |
| dprintf("path: %s active arrays: %d\n", hpath, count); |
| if (devlist == NULL) |
| return 0; |
| do { |
| found = 0; |
| count += count_volumes_list(devlist, |
| NULL, |
| verbose, |
| &found); |
| dprintf("found %d count: %d\n", found, count); |
| } while (found); |
| |
| dprintf("path: %s total number of volumes: %d\n", hpath, count); |
| |
| while (devlist) { |
| struct md_list *dv = devlist; |
| devlist = devlist->next; |
| free(dv->devname); |
| free(dv); |
| } |
| } |
| return count; |
| } |
| |
| static int count_volumes(struct intel_hba *hba, int dpa, int verbose) |
| { |
| if (!hba) |
| return 0; |
| if (hba->type == SYS_DEV_VMD) { |
| struct sys_dev *dev; |
| int count = 0; |
| |
| for (dev = find_intel_devices(); dev; dev = dev->next) { |
| if (dev->type == SYS_DEV_VMD) |
| count += __count_volumes(dev->path, dpa, |
| verbose, 1); |
| } |
| return count; |
| } |
| return __count_volumes(hba->path, dpa, verbose, 0); |
| } |
| |
| static int imsm_default_chunk(const struct imsm_orom *orom) |
| { |
| /* up to 512 if the plaform supports it, otherwise the platform max. |
| * 128 if no platform detected |
| */ |
| int fs = max(7, orom ? fls(orom->sss) : 0); |
| |
| return min(512, (1 << fs)); |
| } |
| |
| static int |
| validate_geometry_imsm_orom(struct intel_super *super, int level, int layout, |
| int raiddisks, int *chunk, unsigned long long size, int verbose) |
| { |
| /* check/set platform and metadata limits/defaults */ |
| if (super->orom && raiddisks > super->orom->dpa) { |
| pr_vrb("platform supports a maximum of %d disks per array\n", |
| super->orom->dpa); |
| return 0; |
| } |
| |
| /* capabilities of OROM tested - copied from validate_geometry_imsm_volume */ |
| if (!is_raid_level_supported(super->orom, level, raiddisks)) { |
| pr_vrb("platform does not support raid%d with %d disk%s\n", |
| level, raiddisks, raiddisks > 1 ? "s" : ""); |
| return 0; |
| } |
| |
| if (*chunk == 0 || *chunk == UnSet) |
| *chunk = imsm_default_chunk(super->orom); |
| |
| if (super->orom && !imsm_orom_has_chunk(super->orom, *chunk)) { |
| pr_vrb("platform does not support a chunk size of: %d\n", *chunk); |
| return 0; |
| } |
| |
| if (layout != imsm_level_to_layout(level)) { |
| if (level == 5) |
| pr_vrb("imsm raid 5 only supports the left-asymmetric layout\n"); |
| else if (level == 10) |
| pr_vrb("imsm raid 10 only supports the n2 layout\n"); |
| else |
| pr_vrb("imsm unknown layout %#x for this raid level %d\n", |
| layout, level); |
| return 0; |
| } |
| |
| if (super->orom && (super->orom->attr & IMSM_OROM_ATTR_2TB) == 0 && |
| (calc_array_size(level, raiddisks, layout, *chunk, size) >> 32) > 0) { |
| pr_vrb("platform does not support a volume size over 2TB\n"); |
| return 0; |
| } |
| |
| return 1; |
| } |
| |
| /* validate_geometry_imsm_volume - lifted from validate_geometry_ddf_bvd |
| * FIX ME add ahci details |
| */ |
| static int validate_geometry_imsm_volume(struct supertype *st, int level, |
| int layout, int raiddisks, int *chunk, |
| unsigned long long size, |
| unsigned long long data_offset, |
| char *dev, |
| unsigned long long *freesize, |
| int verbose) |
| { |
| dev_t rdev; |
| struct intel_super *super = st->sb; |
| struct imsm_super *mpb; |
| struct dl *dl; |
| unsigned long long pos = 0; |
| unsigned long long maxsize; |
| struct extent *e; |
| int i; |
| |
| /* We must have the container info already read in. */ |
| if (!super) |
| return 0; |
| |
| mpb = super->anchor; |
| |
| if (!validate_geometry_imsm_orom(super, level, layout, raiddisks, chunk, size, verbose)) { |
| pr_err("RAID geometry validation failed. Cannot proceed with the action(s).\n"); |
| return 0; |
| } |
| if (!dev) { |
| /* General test: make sure there is space for |
| * 'raiddisks' device extents of size 'size' at a given |
| * offset |
| */ |
| unsigned long long minsize = size; |
| unsigned long long start_offset = MaxSector; |
| int dcnt = 0; |
| if (minsize == 0) |
| minsize = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS; |
| for (dl = super->disks; dl ; dl = dl->next) { |
| int found = 0; |
| |
| pos = 0; |
| i = 0; |
| e = get_extents(super, dl, 0); |
| if (!e) continue; |
| do { |
| unsigned long long esize; |
| esize = e[i].start - pos; |
| if (esize >= minsize) |
| found = 1; |
| if (found && start_offset == MaxSector) { |
| start_offset = pos; |
| break; |
| } else if (found && pos != start_offset) { |
| found = 0; |
| break; |
| } |
| pos = e[i].start + e[i].size; |
| i++; |
| } while (e[i-1].size); |
| if (found) |
| dcnt++; |
| free(e); |
| } |
| if (dcnt < raiddisks) { |
| if (verbose) |
| pr_err("imsm: Not enough devices with space for this array (%d < %d)\n", |
| dcnt, raiddisks); |
| return 0; |
| } |
| return 1; |
| } |
| |
| /* This device must be a member of the set */ |
| if (!stat_is_blkdev(dev, &rdev)) |
| return 0; |
| for (dl = super->disks ; dl ; dl = dl->next) { |
| if (dl->major == (int)major(rdev) && |
| dl->minor == (int)minor(rdev)) |
| break; |
| } |
| if (!dl) { |
| if (verbose) |
| pr_err("%s is not in the same imsm set\n", dev); |
| return 0; |
| } else if (super->orom && dl->index < 0 && mpb->num_raid_devs) { |
| /* If a volume is present then the current creation attempt |
| * cannot incorporate new spares because the orom may not |
| * understand this configuration (all member disks must be |
| * members of each array in the container). |
| */ |
| pr_err("%s is a spare and a volume is already defined for this container\n", dev); |
| pr_err("The option-rom requires all member disks to be a member of all volumes\n"); |
| return 0; |
| } else if (super->orom && mpb->num_raid_devs > 0 && |
| mpb->num_disks != raiddisks) { |
| pr_err("The option-rom requires all member disks to be a member of all volumes\n"); |
| return 0; |
| } |
| |
| /* retrieve the largest free space block */ |
| e = get_extents(super, dl, 0); |
| maxsize = 0; |
| i = 0; |
| if (e) { |
| do { |
| unsigned long long esize; |
| |
| esize = e[i].start - pos; |
| if (esize >= maxsize) |
| maxsize = esize; |
| pos = e[i].start + e[i].size; |
| i++; |
| } while (e[i-1].size); |
| dl->e = e; |
| dl->extent_cnt = i; |
| } else { |
| if (verbose) |
| pr_err("unable to determine free space for: %s\n", |
| dev); |
| return 0; |
| } |
| if (maxsize < size) { |
| if (verbose) |
| pr_err("%s not enough space (%llu < %llu)\n", |
| dev, maxsize, size); |
| return 0; |
| } |
| |
| /* count total number of extents for merge */ |
| i = 0; |
| for (dl = super->disks; dl; dl = dl->next) |
| if (dl->e) |
| i += dl->extent_cnt; |
| |
| maxsize = merge_extents(super, i); |
| |
| if (mpb->num_raid_devs > 0 && size && size != maxsize) |
| pr_err("attempting to create a second volume with size less then remaining space.\n"); |
| |
| if (maxsize < size || maxsize == 0) { |
| if (verbose) { |
| if (maxsize == 0) |
| pr_err("no free space left on device. Aborting...\n"); |
| else |
| pr_err("not enough space to create volume of given size (%llu < %llu). Aborting...\n", |
| maxsize, size); |
| } |
| return 0; |
| } |
| |
| *freesize = maxsize; |
| |
| if (super->orom) { |
| int count = count_volumes(super->hba, |
| super->orom->dpa, verbose); |
| if (super->orom->vphba <= count) { |
| pr_vrb("platform does not support more than %d raid volumes.\n", |
| super->orom->vphba); |
| return 0; |
| } |
| } |
| return 1; |
| } |
| |
| static int imsm_get_free_size(struct supertype *st, int raiddisks, |
| unsigned long long size, int chunk, |
| unsigned long long *freesize) |
| { |
| struct intel_super *super = st->sb; |
| struct imsm_super *mpb = super->anchor; |
| struct dl *dl; |
| int i; |
| int extent_cnt; |
| struct extent *e; |
| unsigned long long maxsize; |
| unsigned long long minsize; |
| int cnt; |
| int used; |
| |
| /* find the largest common start free region of the possible disks */ |
| used = 0; |
| extent_cnt = 0; |
| cnt = 0; |
| for (dl = super->disks; dl; dl = dl->next) { |
| dl->raiddisk = -1; |
| |
| if (dl->index >= 0) |
| used++; |
| |
| /* don't activate new spares if we are orom constrained |
| * and there is already a volume active in the container |
| */ |
| if (super->orom && dl->index < 0 && mpb->num_raid_devs) |
| continue; |
| |
| e = get_extents(super, dl, 0); |
| if (!e) |
| continue; |
| for (i = 1; e[i-1].size; i++) |
| ; |
| dl->e = e; |
| dl->extent_cnt = i; |
| extent_cnt += i; |
| cnt++; |
| } |
| |
| maxsize = merge_extents(super, extent_cnt); |
| minsize = size; |
| if (size == 0) |
| /* chunk is in K */ |
| minsize = chunk * 2; |
| |
| if (cnt < raiddisks || |
| (super->orom && used && used != raiddisks) || |
| maxsize < minsize || |
| maxsize == 0) { |
| pr_err("not enough devices with space to create array.\n"); |
| return 0; /* No enough free spaces large enough */ |
| } |
| |
| if (size == 0) { |
| size = maxsize; |
| if (chunk) { |
| size /= 2 * chunk; |
| size *= 2 * chunk; |
| } |
| maxsize = size; |
| } |
| if (mpb->num_raid_devs > 0 && size && size != maxsize) |
| pr_err("attempting to create a second volume with size less then remaining space.\n"); |
| cnt = 0; |
| for (dl = super->disks; dl; dl = dl->next) |
| if (dl->e) |
| dl->raiddisk = cnt++; |
| |
| *freesize = size; |
| |
| dprintf("imsm: imsm_get_free_size() returns : %llu\n", size); |
| |
| return 1; |
| } |
| |
| static int reserve_space(struct supertype *st, int raiddisks, |
| unsigned long long size, int chunk, |
| unsigned long long *freesize) |
| { |
| struct intel_super *super = st->sb; |
| struct dl *dl; |
| int cnt; |
| int rv = 0; |
| |
| rv = imsm_get_free_size(st, raiddisks, size, chunk, freesize); |
| if (rv) { |
| cnt = 0; |
| for (dl = super->disks; dl; dl = dl->next) |
| if (dl->e) |
| dl->raiddisk = cnt++; |
| rv = 1; |
| } |
| |
| return rv; |
| } |
| |
| static int validate_geometry_imsm(struct supertype *st, int level, int layout, |
| int raiddisks, int *chunk, unsigned long long size, |
| unsigned long long data_offset, |
| char *dev, unsigned long long *freesize, |
| int consistency_policy, int verbose) |
| { |
| int fd, cfd; |
| struct mdinfo *sra; |
| int is_member = 0; |
| |
| /* load capability |
| * if given unused devices create a container |
| * if given given devices in a container create a member volume |
| */ |
| if (level == LEVEL_CONTAINER) { |
| /* Must be a fresh device to add to a container */ |
| return validate_geometry_imsm_container(st, level, layout, |
| raiddisks, |
| *chunk, |
| size, data_offset, |
| dev, freesize, |
| verbose); |
| } |
| |
| /* |
| * Size is given in sectors. |
| */ |
| if (size && (size < 2048)) { |
| pr_err("Given size must be greater than 1M.\n"); |
| /* Depends on algorithm in Create.c : |
| * if container was given (dev == NULL) return -1, |
| * if block device was given ( dev != NULL) return 0. |
| */ |
| return dev ? -1 : 0; |
| } |
| |
| if (!dev) { |
| if (st->sb) { |
| struct intel_super *super = st->sb; |
| if (!validate_geometry_imsm_orom(st->sb, level, layout, |
| raiddisks, chunk, size, |
| verbose)) |
| return 0; |
| /* we are being asked to automatically layout a |
| * new volume based on the current contents of |
| * the container. If the the parameters can be |
| * satisfied reserve_space will record the disks, |
| * start offset, and size of the volume to be |
| * created. add_to_super and getinfo_super |
| * detect when autolayout is in progress. |
| */ |
| /* assuming that freesize is always given when array is |
| created */ |
| if (super->orom && freesize) { |
| int count; |
| count = count_volumes(super->hba, |
| super->orom->dpa, verbose); |
| if (super->orom->vphba <= count) { |
| pr_vrb("platform does not support more than %d raid volumes.\n", |
| super->orom->vphba); |
| return 0; |
| } |
| } |
| if (freesize) |
| return reserve_space(st, raiddisks, size, |
| *chunk, freesize); |
| } |
| return 1; |
| } |
| if (st->sb) { |
| /* creating in a given container */ |
| return validate_geometry_imsm_volume(st, level, layout, |
| raiddisks, chunk, size, |
| data_offset, |
| dev, freesize, verbose); |
| } |
| |
| /* This device needs to be a device in an 'imsm' container */ |
| fd = open(dev, O_RDONLY|O_EXCL, 0); |
| if (fd >= 0) { |
| if (verbose) |
| pr_err("Cannot create this array on device %s\n", |
| dev); |
| close(fd); |
| return 0; |
| } |
| if (errno != EBUSY || (fd = open(dev, O_RDONLY, 0)) < 0) { |
| if (verbose) |
| pr_err("Cannot open %s: %s\n", |
| dev, strerror(errno)); |
| return 0; |
| } |
| /* Well, it is in use by someone, maybe an 'imsm' container. */ |
| cfd = open_container(fd); |
| close(fd); |
| if (cfd < 0) { |
| if (verbose) |
| pr_err("Cannot use %s: It is busy\n", |
| dev); |
| return 0; |
| } |
| sra = sysfs_read(cfd, NULL, GET_VERSION); |
| if (sra && sra->array.major_version == -1 && |
| strcmp(sra->text_version, "imsm") == 0) |
| is_member = 1; |
| sysfs_free(sra); |
| if (is_member) { |
| /* This is a member of a imsm container. Load the container |
| * and try to create a volume |
| */ |
| struct intel_super *super; |
| |
| if (load_super_imsm_all(st, cfd, (void **) &super, NULL, NULL, 1) == 0) { |
| st->sb = super; |
| strcpy(st->container_devnm, fd2devnm(cfd)); |
| close(cfd); |
| return validate_geometry_imsm_volume(st, level, layout, |
| raiddisks, chunk, |
| size, data_offset, dev, |
| freesize, 1) |
| ? 1 : -1; |
| } |
| } |
| |
| if (verbose) |
| pr_err("failed container membership check\n"); |
| |
| close(cfd); |
| return 0; |
| } |
| |
| static void default_geometry_imsm(struct supertype *st, int *level, int *layout, int *chunk) |
| { |
| struct intel_super *super = st->sb; |
| |
| if (level && *level == UnSet) |
| *level = LEVEL_CONTAINER; |
| |
| if (level && layout && *layout == UnSet) |
| *layout = imsm_level_to_layout(*level); |
| |
| if (chunk && (*chunk == UnSet || *chunk == 0)) |
| *chunk = imsm_default_chunk(super->orom); |
| } |
| |
| static void handle_missing(struct intel_super *super, struct imsm_dev *dev); |
| |
| static int kill_subarray_imsm(struct supertype *st, char *subarray_id) |
| { |
| /* remove the subarray currently referenced by subarray_id */ |
| __u8 i; |
| struct intel_dev **dp; |
| struct intel_super *super = st->sb; |
| __u8 current_vol = strtoul(subarray_id, NULL, 10); |
| struct imsm_super *mpb = super->anchor; |
| |
| if (mpb->num_raid_devs == 0) |
| return 2; |
| |
| /* block deletions that would change the uuid of active subarrays |
| * |
| * FIXME when immutable ids are available, but note that we'll |
| * also need to fixup the invalidated/active subarray indexes in |
| * mdstat |
| */ |
| for (i = 0; i < mpb->num_raid_devs; i++) { |
| char subarray[4]; |
| |
| if (i < current_vol) |
| continue; |
| sprintf(subarray, "%u", i); |
| if (is_subarray_active(subarray, st->devnm)) { |
| pr_err("deleting subarray-%d would change the UUID of active subarray-%d, aborting\n", |
| current_vol, i); |
| |
| return 2; |
| } |
| } |
| |
| if (st->update_tail) { |
| struct imsm_update_kill_array *u = xmalloc(sizeof(*u)); |
| |
| u->type = update_kill_array; |
| u->dev_idx = current_vol; |
| append_metadata_update(st, u, sizeof(*u)); |
| |
| return 0; |
| } |
| |
| for (dp = &super->devlist; *dp;) |
| if ((*dp)->index == current_vol) { |
| *dp = (*dp)->next; |
| } else { |
| handle_missing(super, (*dp)->dev); |
| if ((*dp)->index > current_vol) |
| (*dp)->index--; |
| dp = &(*dp)->next; |
| } |
| |
| /* no more raid devices, all active components are now spares, |
| * but of course failed are still failed |
| */ |
| if (--mpb->num_raid_devs == 0) { |
| struct dl *d; |
| |
| for (d = super->disks; d; d = d->next) |
| if (d->index > -2) |
| mark_spare(d); |
| } |
| |
| super->updates_pending++; |
| |
| return 0; |
| } |
| |
| static int get_rwh_policy_from_update(char *update) |
| { |
| if (strcmp(update, "ppl") == 0) |
| return RWH_MULTIPLE_DISTRIBUTED; |
| else if (strcmp(update, "no-ppl") == 0) |
| return RWH_MULTIPLE_OFF; |
| else if (strcmp(update, "bitmap") == 0) |
| return RWH_BITMAP; |
| else if (strcmp(update, "no-bitmap") == 0) |
| return RWH_OFF; |
| return -1; |
| } |
| |
| static int update_subarray_imsm(struct supertype *st, char *subarray, |
| char *update, struct mddev_ident *ident) |
| { |
| /* update the subarray currently referenced by ->current_vol */ |
| struct intel_super *super = st->sb; |
| struct imsm_super *mpb = super->anchor; |
| |
| if (strcmp(update, "name") == 0) { |
| char *name = ident->name; |
| char *ep; |
| int vol; |
| |
| if (is_subarray_active(subarray, st->devnm)) { |
| pr_err("Unable to update name of active subarray\n"); |
| return 2; |
| } |
| |
| if (!check_name(super, name, 0)) |
| return 2; |
| |
| vol = strtoul(subarray, &ep, 10); |
| if (*ep != '\0' || vol >= super->anchor->num_raid_devs) |
| return 2; |
| |
| if (st->update_tail) { |
| struct imsm_update_rename_array *u = xmalloc(sizeof(*u)); |
| |
| u->type = update_rename_array; |
| u->dev_idx = vol; |
| strncpy((char *) u->name, name, MAX_RAID_SERIAL_LEN); |
| u->name[MAX_RAID_SERIAL_LEN-1] = '\0'; |
| append_metadata_update(st, u, sizeof(*u)); |
| } else { |
| struct imsm_dev *dev; |
| int i, namelen; |
| |
| dev = get_imsm_dev(super, vol); |
| memset(dev->volume, '\0', MAX_RAID_SERIAL_LEN); |
| namelen = min((int)strlen(name), MAX_RAID_SERIAL_LEN); |
| memcpy(dev->volume, name, namelen); |
| for (i = 0; i < mpb->num_raid_devs; i++) { |
| dev = get_imsm_dev(super, i); |
| handle_missing(super, dev); |
| } |
| super->updates_pending++; |
| } |
| } else if (get_rwh_policy_from_update(update) != -1) { |
| int new_policy; |
| char *ep; |
| int vol = strtoul(subarray, &ep, 10); |
| |
| if (*ep != '\0' || vol >= super->anchor->num_raid_devs) |
| return 2; |
| |
| new_policy = get_rwh_policy_from_update(update); |
| |
| if (st->update_tail) { |
| struct imsm_update_rwh_policy *u = xmalloc(sizeof(*u)); |
| |
| u->type = update_rwh_policy; |
| u->dev_idx = vol; |
| u->new_policy = new_policy; |
| append_metadata_update(st, u, sizeof(*u)); |
| } else { |
| struct imsm_dev *dev; |
| |
| dev = get_imsm_dev(super, vol); |
| dev->rwh_policy = new_policy; |
| super->updates_pending++; |
| } |
| if (new_policy == RWH_BITMAP) |
| return write_init_bitmap_imsm_vol(st, vol); |
| } else |
| return 2; |
| |
| return 0; |
| } |
| |
| static int is_gen_migration(struct imsm_dev *dev) |
| { |
| if (dev == NULL) |
| return 0; |
| |
| if (!dev->vol.migr_state) |
| return 0; |
| |
| if (migr_type(dev) == MIGR_GEN_MIGR) |
| return 1; |
| |
| return 0; |
| } |
| |
| static int is_rebuilding(struct imsm_dev *dev) |
| { |
| struct imsm_map *migr_map; |
| |
| if (!dev->vol.migr_state) |
| return 0; |
| |
| if (migr_type(dev) != MIGR_REBUILD) |
| return 0; |
| |
| migr_map = get_imsm_map(dev, MAP_1); |
| |
| if (migr_map->map_state == IMSM_T_STATE_DEGRADED) |
| return 1; |
| else |
| return 0; |
| } |
| |
| static int is_initializing(struct imsm_dev *dev) |
| { |
| struct imsm_map *migr_map; |
| |
| if (!dev->vol.migr_state) |
| return 0; |
| |
| if (migr_type(dev) != MIGR_INIT) |
| return 0; |
| |
| migr_map = get_imsm_map(dev, MAP_1); |
| |
| if (migr_map->map_state == IMSM_T_STATE_UNINITIALIZED) |
| return 1; |
| |
| return 0; |
| } |
| |
| static void update_recovery_start(struct intel_super *super, |
| struct imsm_dev *dev, |
| struct mdinfo *array) |
| { |
| struct mdinfo *rebuild = NULL; |
| struct mdinfo *d; |
| __u32 units; |
| |
| if (!is_rebuilding(dev)) |
| return; |
| |
| /* Find the rebuild target, but punt on the dual rebuild case */ |
| for (d = array->devs; d; d = d->next) |
| if (d->recovery_start == 0) { |
| if (rebuild) |
| return; |
| rebuild = d; |
| } |
| |
| if (!rebuild) { |
| /* (?) none of the disks are marked with |
| * IMSM_ORD_REBUILD, so assume they are missing and the |
| * disk_ord_tbl was not correctly updated |
| */ |
| dprintf("failed to locate out-of-sync disk\n"); |
| return; |
| } |
| |
| units = vol_curr_migr_unit(dev); |
| rebuild->recovery_start = units * blocks_per_migr_unit(super, dev); |
| } |
| |
| static int recover_backup_imsm(struct supertype *st, struct mdinfo *info); |
| |
| static struct mdinfo *container_content_imsm(struct supertype *st, char *subarray) |
| { |
| /* Given a container loaded by load_super_imsm_all, |
| * extract information about all the arrays into |
| * an mdinfo tree. |
| * If 'subarray' is given, just extract info about that array. |
| * |
| * For each imsm_dev create an mdinfo, fill it in, |
| * then look for matching devices in super->disks |
| * and create appropriate device mdinfo. |
| */ |
| struct intel_super *super = st->sb; |
| struct imsm_super *mpb = super->anchor; |
| struct mdinfo *rest = NULL; |
| unsigned int i; |
| int sb_errors = 0; |
| struct dl *d; |
| int spare_disks = 0; |
| int current_vol = super->current_vol; |
| |
| /* do not assemble arrays when not all attributes are supported */ |
| if (imsm_check_attributes(mpb->attributes) == 0) { |
| sb_errors = 1; |
| pr_err("Unsupported attributes in IMSM metadata.Arrays activation is blocked.\n"); |
| } |
| |
| /* count spare devices, not used in maps |
| */ |
| for (d = super->disks; d; d = d->next) |
| if (d->index == -1) |
| spare_disks++; |
| |
| for (i = 0; i < mpb->num_raid_devs; i++) { |
| struct imsm_dev *dev; |
| struct imsm_map *map; |
| struct imsm_map *map2; |
| struct mdinfo *this; |
| int slot; |
| int chunk; |
| char *ep; |
| int level; |
| |
| if (subarray && |
| (i != strtoul(subarray, &ep, 10) || *ep != '\0')) |
| continue; |
| |
| dev = get_imsm_dev(super, i); |
| map = get_imsm_map(dev, MAP_0); |
| map2 = get_imsm_map(dev, MAP_1); |
| level = get_imsm_raid_level(map); |
| |
| /* do not publish arrays that are in the middle of an |
| * unsupported migration |
| */ |
| if (dev->vol.migr_state && |
| (migr_type(dev) == MIGR_STATE_CHANGE)) { |
| pr_err("cannot assemble volume '%.16s': unsupported migration in progress\n", |
| dev->volume); |
| continue; |
| } |
| /* do not publish arrays that are not support by controller's |
| * OROM/EFI |
| */ |
| |
| this = xmalloc(sizeof(*this)); |
| |
| super->current_vol = i; |
| getinfo_super_imsm_volume(st, this, NULL); |
| this->next = rest; |
| chunk = __le16_to_cpu(map->blocks_per_strip) >> 1; |
| /* mdadm does not support all metadata features- set the bit in all arrays state */ |
| if (!validate_geometry_imsm_orom(super, |
| level, /* RAID level */ |
| imsm_level_to_layout(level), |
| map->num_members, /* raid disks */ |
| &chunk, imsm_dev_size(dev), |
| 1 /* verbose */)) { |
| pr_err("IMSM RAID geometry validation failed. Array %s activation is blocked.\n", |
| dev->volume); |
| this->array.state |= |
| (1<<MD_SB_BLOCK_CONTAINER_RESHAPE) | |
| (1<<MD_SB_BLOCK_VOLUME); |
| } |
| |
| /* if array has bad blocks, set suitable bit in all arrays state */ |
| if (sb_errors) |
| this->array.state |= |
| (1<<MD_SB_BLOCK_CONTAINER_RESHAPE) | |
| (1<<MD_SB_BLOCK_VOLUME); |
| |
| for (slot = 0 ; slot < map->num_members; slot++) { |
| unsigned long long recovery_start; |
| struct mdinfo *info_d; |
| struct dl *d; |
| int idx; |
| int skip; |
| __u32 ord; |
| int missing = 0; |
| |
| skip = 0; |
| idx = get_imsm_disk_idx(dev, slot, MAP_0); |
| ord = get_imsm_ord_tbl_ent(dev, slot, MAP_X); |
| for (d = super->disks; d ; d = d->next) |
| if (d->index == idx) |
| break; |
| |
| recovery_start = MaxSector; |
| if (d == NULL) |
| skip = 1; |
| if (d && is_failed(&d->disk)) |
| skip = 1; |
| if (!skip && (ord & IMSM_ORD_REBUILD)) |
| recovery_start = 0; |
| if (!(ord & IMSM_ORD_REBUILD)) |
| this->array.working_disks++; |
| /* |
| * if we skip some disks the array will be assmebled degraded; |
| * reset resync start to avoid a dirty-degraded |
| * situation when performing the intial sync |
| */ |
| if (skip) |
| missing++; |
| |
| if (!(dev->vol.dirty & RAIDVOL_DIRTY)) { |
| if ((!able_to_resync(level, missing) || |
| recovery_start == 0)) |
| this->resync_start = MaxSector; |
| } else { |
| /* |
| * FIXME handle dirty degraded |
| */ |
| } |
| |
| if (skip) |
| continue; |
| |
| info_d = xcalloc(1, sizeof(*info_d)); |
| info_d->next = this->devs; |
| this->devs = info_d; |
| |
| info_d->disk.number = d->index; |
| info_d->disk.major = d->major; |
| info_d->disk.minor = d->minor; |
| info_d->disk.raid_disk = slot; |
| info_d->recovery_start = recovery_start; |
| if (map2) { |
| if (slot < map2->num_members) |
| info_d->disk.state = (1 << MD_DISK_ACTIVE); |
| else |
| this->array.spare_disks++; |
| } else { |
| if (slot < map->num_members) |
| info_d->disk.state = (1 << MD_DISK_ACTIVE); |
| else |
| this->array.spare_disks++; |
| } |
| |
| info_d->events = __le32_to_cpu(mpb->generation_num); |
| info_d->data_offset = pba_of_lba0(map); |
| info_d->component_size = calc_component_size(map, dev); |
| |
| if (map->raid_level == 5) { |
| info_d->ppl_sector = this->ppl_sector; |
| info_d->ppl_size = this->ppl_size; |
| if (this->consistency_policy == CONSISTENCY_POLICY_PPL && |
| recovery_start == 0) |
| this->resync_start = 0; |
| } |
| |
| info_d->bb.supported = 1; |
| get_volume_badblocks(super->bbm_log, ord_to_idx(ord), |
| info_d->data_offset, |
| info_d->component_size, |
| &info_d->bb); |
| } |
| /* now that the disk list is up-to-date fixup recovery_start */ |
| update_recovery_start(super, dev, this); |
| this->array.spare_disks += spare_disks; |
| |
| /* check for reshape */ |
| if (this->reshape_active == 1) |
| recover_backup_imsm(st, this); |
| rest = this; |
| } |
| |
| super->current_vol = current_vol; |
| return rest; |
| } |
| |
| static __u8 imsm_check_degraded(struct intel_super *super, struct imsm_dev *dev, |
| int failed, int look_in_map) |
| { |
| struct imsm_map *map; |
| |
| map = get_imsm_map(dev, look_in_map); |
| |
| if (!failed) |
| return map->map_state == IMSM_T_STATE_UNINITIALIZED ? |
| IMSM_T_STATE_UNINITIALIZED : IMSM_T_STATE_NORMAL; |
| |
| switch (get_imsm_raid_level(map)) { |
| case 0: |
| return IMSM_T_STATE_FAILED; |
| break; |
| case 1: |
| if (failed < map->num_members) |
| return IMSM_T_STATE_DEGRADED; |
| else |
| return IMSM_T_STATE_FAILED; |
| break; |
| case 10: |
| { |
| /** |
| * check to see if any mirrors have failed, otherwise we |
| * are degraded. Even numbered slots are mirrored on |
| * slot+1 |
| */ |
| int i; |
| /* gcc -Os complains that this is unused */ |
| int insync = insync; |
| |
| for (i = 0; i < map->num_members; i++) { |
| __u32 ord = get_imsm_ord_tbl_ent(dev, i, MAP_X); |
| int idx = ord_to_idx(ord); |
| struct imsm_disk *disk; |
| |
| /* reset the potential in-sync count on even-numbered |
| * slots. num_copies is always 2 for imsm raid10 |
| */ |
| if ((i & 1) == 0) |
| insync = 2; |
| |
| disk = get_imsm_disk(super, idx); |
| if (!disk || is_failed(disk) || ord & IMSM_ORD_REBUILD) |
| insync--; |
| |
| /* no in-sync disks left in this mirror the |
| * array has failed |
| */ |
| if (insync == 0) |
| return IMSM_T_STATE_FAILED; |
| } |
| |
| return IMSM_T_STATE_DEGRADED; |
| } |
| case 5: |
| if (failed < 2) |
| return IMSM_T_STATE_DEGRADED; |
| else |
| return IMSM_T_STATE_FAILED; |
| break; |
| default: |
| break; |
| } |
| |
| return map->map_state; |
| } |
| |
| static int imsm_count_failed(struct intel_super *super, struct imsm_dev *dev, |
| int look_in_map) |
| { |
| int i; |
| int failed = 0; |
| struct imsm_disk *disk; |
| struct imsm_map *map = get_imsm_map(dev, MAP_0); |
| struct imsm_map *prev = get_imsm_map(dev, MAP_1); |
| struct imsm_map *map_for_loop; |
| __u32 ord; |
| int idx; |
| int idx_1; |
| |
| /* at the beginning of migration we set IMSM_ORD_REBUILD on |
| * disks that are being rebuilt. New failures are recorded to |
| * map[0]. So we look through all the disks we started with and |
| * see if any failures are still present, or if any new ones |
| * have arrived |
| */ |
| map_for_loop = map; |
| if (prev && (map->num_members < prev->num_members)) |
| map_for_loop = prev; |
| |
| for (i = 0; i < map_for_loop->num_members; i++) { |
| idx_1 = -255; |
| /* when MAP_X is passed both maps failures are counted |
| */ |
| if (prev && |
| (look_in_map == MAP_1 || look_in_map == MAP_X) && |
| i < prev->num_members) { |
| ord = __le32_to_cpu(prev->disk_ord_tbl[i]); |
| idx_1 = ord_to_idx(ord); |
| |
| disk = get_imsm_disk(super, idx_1); |
| if (!disk || is_failed(disk) || ord & IMSM_ORD_REBUILD) |
| failed++; |
| } |
| if ((look_in_map == MAP_0 || look_in_map == MAP_X) && |
| i < map->num_members) { |
| ord = __le32_to_cpu(map->disk_ord_tbl[i]); |
| idx = ord_to_idx(ord); |
| |
| if (idx != idx_1) { |
| disk = get_imsm_disk(super, idx); |
| if (!disk || is_failed(disk) || |
| ord & IMSM_ORD_REBUILD) |
| failed++; |
| } |
| } |
| } |
| |
| return failed; |
| } |
| |
| static int imsm_open_new(struct supertype *c, struct active_array *a, |
| char *inst) |
| { |
| struct intel_super *super = c->sb; |
| struct imsm_super *mpb = super->anchor; |
| struct imsm_update_prealloc_bb_mem u; |
| |
| if (atoi(inst) >= mpb->num_raid_devs) { |
| pr_err("subarry index %d, out of range\n", atoi(inst)); |
| return -ENODEV; |
| } |
| |
| dprintf("imsm: open_new %s\n", inst); |
| a->info.container_member = atoi(inst); |
| |
| u.type = update_prealloc_badblocks_mem; |
| imsm_update_metadata_locally(c, &u, sizeof(u)); |
| |
| return 0; |
| } |
| |
| static int is_resyncing(struct imsm_dev *dev) |
| { |
| struct imsm_map *migr_map; |
| |
| if (!dev->vol.migr_state) |
| return 0; |
| |
| if (migr_type(dev) == MIGR_INIT || |
| migr_type(dev) == MIGR_REPAIR) |
| return 1; |
| |
| if (migr_type(dev) == MIGR_GEN_MIGR) |
| return 0; |
| |
| migr_map = get_imsm_map(dev, MAP_1); |
| |
| if (migr_map->map_state == IMSM_T_STATE_NORMAL && |
| dev->vol.migr_type != MIGR_GEN_MIGR) |
| return 1; |
| else |
| return 0; |
| } |
| |
| /* return true if we recorded new information */ |
| static int mark_failure(struct intel_super *super, |
| struct imsm_dev *dev, struct imsm_disk *disk, int idx) |
| { |
| __u32 ord; |
| int slot; |
| struct imsm_map *map; |
| char buf[MAX_RAID_SERIAL_LEN+3]; |
| unsigned int len, shift = 0; |
| |
| /* new failures are always set in map[0] */ |
| map = get_imsm_map(dev, MAP_0); |
| |
| slot = get_imsm_disk_slot(map, idx); |
| if (slot < 0) |
| return 0; |
| |
| ord = __le32_to_cpu(map->disk_ord_tbl[slot]); |
| if (is_failed(disk) && (ord & IMSM_ORD_REBUILD)) |
| return 0; |
| |
| memcpy(buf, disk->serial, MAX_RAID_SERIAL_LEN); |
| buf[MAX_RAID_SERIAL_LEN] = '\000'; |
| strcat(buf, ":0"); |
| if ((len = strlen(buf)) >= MAX_RAID_SERIAL_LEN) |
| shift = len - MAX_RAID_SERIAL_LEN + 1; |
| memcpy(disk->serial, &buf[shift], len + 1 - shift); |
| |
| disk->status |= FAILED_DISK; |
| set_imsm_ord_tbl_ent(map, slot, idx | IMSM_ORD_REBUILD); |
| /* mark failures in second map if second map exists and this disk |
| * in this slot. |
| * This is valid for migration, initialization and rebuild |
| */ |
| if (dev->vol.migr_state) { |
| struct imsm_map *map2 = get_imsm_map(dev, MAP_1); |
| int slot2 = get_imsm_disk_slot(map2, idx); |
| |
| if (slot2 < map2->num_members && slot2 >= 0) |
| set_imsm_ord_tbl_ent(map2, slot2, |
| idx | IMSM_ORD_REBUILD); |
| } |
| if (map->failed_disk_num == 0xff || |
| (!is_rebuilding(dev) && map->failed_disk_num > slot)) |
| map->failed_disk_num = slot; |
| |
| clear_disk_badblocks(super->bbm_log, ord_to_idx(ord)); |
| |
| return 1; |
| } |
| |
| static void mark_missing(struct intel_super *super, |
| struct imsm_dev *dev, struct imsm_disk *disk, int idx) |
| { |
| mark_failure(super, dev, disk, idx); |
| |
| if (disk->scsi_id == __cpu_to_le32(~(__u32)0)) |
| return; |
| |
| disk->scsi_id = __cpu_to_le32(~(__u32)0); |
| memmove(&disk->serial[0], &disk->serial[1], MAX_RAID_SERIAL_LEN - 1); |
| } |
| |
| static void handle_missing(struct intel_super *super, struct imsm_dev *dev) |
| { |
| struct dl *dl; |
| |
| if (!super->missing) |
| return; |
| |
| /* When orom adds replacement for missing disk it does |
| * not remove entry of missing disk, but just updates map with |
| * new added disk. So it is not enough just to test if there is |
| * any missing disk, we have to look if there are any failed disks |
| * in map to stop migration */ |
| |
| dprintf("imsm: mark missing\n"); |
| /* end process for initialization and rebuild only |
| */ |
| if (is_gen_migration(dev) == 0) { |
| int failed = imsm_count_failed(super, dev, MAP_0); |
| |
| if (failed) { |
| __u8 map_state; |
| struct imsm_map *map = get_imsm_map(dev, MAP_0); |
| struct imsm_map *map1; |
| int i, ord, ord_map1; |
| int rebuilt = 1; |
| |
| for (i = 0; i < map->num_members; i++) { |
| ord = get_imsm_ord_tbl_ent(dev, i, MAP_0); |
| if (!(ord & IMSM_ORD_REBUILD)) |
| continue; |
| |
| map1 = get_imsm_map(dev, MAP_1); |
| if (!map1) |
| continue; |
| |
| ord_map1 = __le32_to_cpu(map1->disk_ord_tbl[i]); |
| if (ord_map1 & IMSM_ORD_REBUILD) |
| rebuilt = 0; |
| } |
| |
| if (rebuilt) { |
| map_state = imsm_check_degraded(super, dev, |
| failed, MAP_0); |
| end_migration(dev, super, map_state); |
| } |
| } |
| } |
| for (dl = super->missing; dl; dl = dl->next) |
| mark_missing(super, dev, &dl->disk, dl->index); |
| super->updates_pending++; |
| } |
| |
| static unsigned long long imsm_set_array_size(struct imsm_dev *dev, |
| long long new_size) |
| { |
| unsigned long long array_blocks; |
| struct imsm_map *map = get_imsm_map(dev, MAP_0); |
| int used_disks = imsm_num_data_members(map); |
| |
| if (used_disks == 0) { |
| /* when problems occures |
| * return current array_blocks value |
| */ |
| array_blocks = imsm_dev_size(dev); |
| |
| return array_blocks; |
| } |
| |
| /* set array size in metadata |
| */ |
| if (new_size <= 0) |
| /* OLCE size change is caused by added disks |
| */ |
| array_blocks = per_dev_array_size(map) * used_disks; |
| else |
| /* Online Volume Size Change |
| * Using available free space |
| */ |
| array_blocks = new_size; |
| |
| array_blocks = round_size_to_mb(array_blocks, used_disks); |
| set_imsm_dev_size(dev, array_blocks); |
| |
| return array_blocks; |
| } |
| |
| static void imsm_set_disk(struct active_array *a, int n, int state); |
| |
| static void imsm_progress_container_reshape(struct intel_super *super) |
| { |
| /* if no device has a migr_state, but some device has a |
| * different number of members than the previous device, start |
| * changing the number of devices in this device to match |
| * previous. |
| */ |
| struct imsm_super *mpb = super->anchor; |
| int prev_disks = -1; |
| int i; |
| int copy_map_size; |
| |
| for (i = 0; i < mpb->num_raid_devs; i++) { |
| struct imsm_dev *dev = get_imsm_dev(super, i); |
| struct imsm_map *map = get_imsm_map(dev, MAP_0); |
| struct imsm_map *map2; |
| int prev_num_members; |
| |
| if (dev->vol.migr_state) |
| return; |
| |
| if (prev_disks == -1) |
| prev_disks = map->num_members; |
| if (prev_disks == map->num_members) |
| continue; |
| |
| /* OK, this array needs to enter reshape mode. |
| * i.e it needs a migr_state |
| */ |
| |
| copy_map_size = sizeof_imsm_map(map); |
| prev_num_members = map->num_members; |
| map->num_members = prev_disks; |
| dev->vol.migr_state = 1; |
| set_vol_curr_migr_unit(dev, 0); |
| set_migr_type(dev, MIGR_GEN_MIGR); |
| for (i = prev_num_members; |
| i < map->num_members; i++) |
| set_imsm_ord_tbl_ent(map, i, i); |
| map2 = get_imsm_map(dev, MAP_1); |
| /* Copy the current map */ |
| memcpy(map2, map, copy_map_size); |
| map2->num_members = prev_num_members; |
| |
| imsm_set_array_size(dev, -1); |
| super->clean_migration_record_by_mdmon = 1; |
| super->updates_pending++; |
| } |
| } |
| |
| /* Handle dirty -> clean transititions, resync and reshape. Degraded and rebuild |
| * states are handled in imsm_set_disk() with one exception, when a |
| * resync is stopped due to a new failure this routine will set the |
| * 'degraded' state for the array. |
| */ |
| static int imsm_set_array_state(struct active_array *a, int consistent) |
| { |
| int inst = a->info.container_member; |
| struct intel_super *super = a->container->sb; |
| struct imsm_dev *dev = get_imsm_dev(super, inst); |
| struct imsm_map *map = get_imsm_map(dev, MAP_0); |
| int failed = imsm_count_failed(super, dev, MAP_0); |
| __u8 map_state = imsm_check_degraded(super, dev, failed, MAP_0); |
| __u32 blocks_per_unit; |
| |
| if (dev->vol.migr_state && |
| dev->vol.migr_type == MIGR_GEN_MIGR) { |
| /* array state change is blocked due to reshape action |
| * We might need to |
| * - abort the reshape (if last_checkpoint is 0 and action!= reshape) |
| * - finish the reshape (if last_checkpoint is big and action != reshape) |
| * - update vol_curr_migr_unit |
| */ |
| if (a->curr_action == reshape) { |
| /* still reshaping, maybe update vol_curr_migr_unit */ |
| goto mark_checkpoint; |
| } else { |
| if (a->last_checkpoint == 0 && a->prev_action == reshape) { |
| /* for some reason we aborted the reshape. |
| * |
| * disable automatic metadata rollback |
| * user action is required to recover process |
| */ |
| if (0) { |
| struct imsm_map *map2 = |
| get_imsm_map(dev, MAP_1); |
| dev->vol.migr_state = 0; |
| set_migr_type(dev, 0); |
| set_vol_curr_migr_unit(dev, 0); |
| memcpy(map, map2, |
| sizeof_imsm_map(map2)); |
| super->updates_pending++; |
| } |
| } |
| if (a->last_checkpoint >= a->info.component_size) { |
| unsigned long long array_blocks; |
| int used_disks; |
| struct mdinfo *mdi; |
| |
| used_disks = imsm_num_data_members(map); |
| if (used_disks > 0) { |
| array_blocks = |
| per_dev_array_size(map) * |
| used_disks; |
| array_blocks = |
| round_size_to_mb(array_blocks, |
| used_disks); |
| a->info.custom_array_size = array_blocks; |
| /* encourage manager to update array |
| * size |
| */ |
| |
| a->check_reshape = 1; |
| } |
| /* finalize online capacity expansion/reshape */ |
| for (mdi = a->info.devs; mdi; mdi = mdi->next) |
| imsm_set_disk(a, |
| mdi->disk.raid_disk, |
| mdi->curr_state); |
| |
| imsm_progress_container_reshape(super); |
| } |
| } |
| } |
| |
| /* before we activate this array handle any missing disks */ |
| if (consistent == 2) |
| handle_missing(super, dev); |
| |
| if (consistent == 2 && |
| (!is_resync_complete(&a->info) || |
| map_state != IMSM_T_STATE_NORMAL || |
| dev->vol.migr_state)) |
| consistent = 0; |
| |
| if (is_resync_complete(&a->info)) { |
| /* complete intialization / resync, |
| * recovery and interrupted recovery is completed in |
| * ->set_disk |
| */ |
| if (is_resyncing(dev)) { |
| dprintf("imsm: mark resync done\n"); |
| end_migration(dev, super, map_state); |
| super->updates_pending++; |
| a->last_checkpoint = 0; |
| } |
| } else if ((!is_resyncing(dev) && !failed) && |
| (imsm_reshape_blocks_arrays_changes(super) == 0)) { |
| /* mark the start of the init process if nothing is failed */ |
| dprintf("imsm: mark resync start\n"); |
| if (map->map_state == IMSM_T_STATE_UNINITIALIZED) |
| migrate(dev, super, IMSM_T_STATE_NORMAL, MIGR_INIT); |
| else |
| migrate(dev, super, IMSM_T_STATE_NORMAL, MIGR_REPAIR); |
| super->updates_pending++; |
| } |
| |
| mark_checkpoint: |
| /* skip checkpointing for general migration, |
| * it is controlled in mdadm |
| */ |
| if (is_gen_migration(dev)) |
| goto skip_mark_checkpoint; |
| |
| /* check if we can update vol_curr_migr_unit from resync_start, |
| * recovery_start |
| */ |
| blocks_per_unit = blocks_per_migr_unit(super, dev); |
| if (blocks_per_unit) { |
| set_vol_curr_migr_unit(dev, |
| a->last_checkpoint / blocks_per_unit); |
| dprintf("imsm: mark checkpoint (%llu)\n", |
| vol_curr_migr_unit(dev)); |
| super->updates_pending++; |
| } |
| |
| skip_mark_checkpoint: |
| /* mark dirty / clean */ |
| if (((dev->vol.dirty & RAIDVOL_DIRTY) && consistent) || |
| (!(dev->vol.dirty & RAIDVOL_DIRTY) && !consistent)) { |
| dprintf("imsm: mark '%s'\n", consistent ? "clean" : "dirty"); |
| if (consistent) { |
| dev->vol.dirty = RAIDVOL_CLEAN; |
| } else { |
| dev->vol.dirty = RAIDVOL_DIRTY; |
| if (dev->rwh_policy == RWH_DISTRIBUTED || |
| dev->rwh_policy == RWH_MULTIPLE_DISTRIBUTED) |
| dev->vol.dirty |= RAIDVOL_DSRECORD_VALID; |
| } |
| super->updates_pending++; |
| } |
| |
| return consistent; |
| } |
| |
| static int imsm_disk_slot_to_ord(struct active_array *a, int slot) |
| { |
| int inst = a->info.container_member; |
| struct intel_super *super = a->container->sb; |
| struct imsm_dev *dev = get_imsm_dev(super, inst); |
| struct imsm_map *map = get_imsm_map(dev, MAP_0); |
| |
| if (slot > map->num_members) { |
| pr_err("imsm: imsm_disk_slot_to_ord %d out of range 0..%d\n", |
| slot, map->num_members - 1); |
| return -1; |
| } |
| |
| if (slot < 0) |
| return -1; |
| |
| return get_imsm_ord_tbl_ent(dev, slot, MAP_0); |
| } |
| |
| static void imsm_set_disk(struct active_array *a, int n, int state) |
| { |
| int inst = a->info.container_member; |
| struct intel_super *super = a->container->sb; |
| struct imsm_dev *dev = get_imsm_dev(super, inst); |
| struct imsm_map *map = get_imsm_map(dev, MAP_0); |
| struct imsm_disk *disk; |
| struct mdinfo *mdi; |
| int recovery_not_finished = 0; |
| int failed; |
| int ord; |
| __u8 map_state; |
| int rebuild_done = 0; |
| int i; |
| |
| ord = get_imsm_ord_tbl_ent(dev, n, MAP_X); |
| if (ord < 0) |
| return; |
| |
| dprintf("imsm: set_disk %d:%x\n", n, state); |
| disk = get_imsm_disk(super, ord_to_idx(ord)); |
| |
| /* check for new failures */ |
| if (disk && (state & DS_FAULTY)) { |
| if (mark_failure(super, dev, disk, ord_to_idx(ord))) |
| super->updates_pending++; |
| } |
| |
| /* check if in_sync */ |
| if (state & DS_INSYNC && ord & IMSM_ORD_REBUILD && is_rebuilding(dev)) { |
| struct imsm_map *migr_map = get_imsm_map(dev, MAP_1); |
| |
| set_imsm_ord_tbl_ent(migr_map, n, ord_to_idx(ord)); |
| rebuild_done = 1; |
| super->updates_pending++; |
| } |
| |
| failed = imsm_count_failed(super, dev, MAP_0); |
| map_state = imsm_check_degraded(super, dev, failed, MAP_0); |
| |
| /* check if recovery complete, newly degraded, or failed */ |
| dprintf("imsm: Detected transition to state "); |
| switch (map_state) { |
| case IMSM_T_STATE_NORMAL: /* transition to normal state */ |
| dprintf("normal: "); |
| if (is_rebuilding(dev)) { |
| dprintf_cont("while rebuilding"); |
| /* check if recovery is really finished */ |
| for (mdi = a->info.devs; mdi ; mdi = mdi->next) |
| if (mdi->recovery_start != MaxSector) { |
| recovery_not_finished = 1; |
| break; |
| } |
| if (recovery_not_finished) { |
| dprintf_cont("\n"); |
| dprintf("Rebuild has not finished yet, state not changed"); |
| if (a->last_checkpoint < mdi->recovery_start) { |
| a->last_checkpoint = mdi->recovery_start; |
| super->updates_pending++; |
| } |
| break; |
| } |
| end_migration(dev, super, map_state); |
| map->failed_disk_num = ~0; |
| super->updates_pending++; |
| a->last_checkpoint = 0; |
| break; |
| } |
| if (is_gen_migration(dev)) { |
| dprintf_cont("while general migration"); |
| if (a->last_checkpoint >= a->info.component_size) |
| end_migration(dev, super, map_state); |
| else |
| map->map_state = map_state; |
| map->failed_disk_num = ~0; |
| super->updates_pending++; |
| break; |
| } |
| break; |
| case IMSM_T_STATE_DEGRADED: /* transition to degraded state */ |
| dprintf_cont("degraded: "); |
| if (map->map_state != map_state && !dev->vol.migr_state) { |
| dprintf_cont("mark degraded"); |
| map->map_state = map_state; |
| super->updates_pending++; |
| a->last_checkpoint = 0; |
| break; |
| } |
| if (is_rebuilding(dev)) { |
| dprintf_cont("while rebuilding "); |
| if (state & DS_FAULTY) { |
| dprintf_cont("removing failed drive "); |
| if (n == map->failed_disk_num) { |
| dprintf_cont("end migration"); |
| end_migration(dev, super, map_state); |
| a->last_checkpoint = 0; |
| } else { |
| dprintf_cont("fail detected during rebuild, changing map state"); |
| map->map_state = map_state; |
| } |
| super->updates_pending++; |
| } |
| |
| if (!rebuild_done) |
| break; |
| |
| /* check if recovery is really finished */ |
| for (mdi = a->info.devs; mdi ; mdi = mdi->next) |
| if (mdi->recovery_start != MaxSector) { |
| recovery_not_finished = 1; |
| break; |
| } |
| if (recovery_not_finished) { |
| dprintf_cont("\n"); |
| dprintf_cont("Rebuild has not finished yet"); |
| if (a->last_checkpoint < mdi->recovery_start) { |
| a->last_checkpoint = |
| mdi->recovery_start; |
| super->updates_pending++; |
| } |
| break; |
| } |
| |
| dprintf_cont(" Rebuild done, still degraded"); |
| end_migration(dev, super, map_state); |
| a->last_checkpoint = 0; |
| super->updates_pending++; |
| |
| for (i = 0; i < map->num_members; i++) { |
| int idx = get_imsm_ord_tbl_ent(dev, i, MAP_0); |
| |
| if (idx & IMSM_ORD_REBUILD) |
| map->failed_disk_num = i; |
| } |
| super->updates_pending++; |
| break; |
| } |
| if (is_gen_migration(dev)) { |
| dprintf_cont("while general migration"); |
| if (a->last_checkpoint >= a->info.component_size) |
| end_migration(dev, super, map_state); |
| else { |
| map->map_state = map_state; |
| manage_second_map(super, dev); |
| } |
| super->updates_pending++; |
| break; |
| } |
| if (is_initializing(dev)) { |
| dprintf_cont("while initialization."); |
| map->map_state = map_state; |
| super->updates_pending++; |
| break; |
| } |
| break; |
| case IMSM_T_STATE_FAILED: /* transition to failed state */ |
| dprintf_cont("failed: "); |
| if (is_gen_migration(dev)) { |
| dprintf_cont("while general migration"); |
| map->map_state = map_state; |
| super->updates_pending++; |
| break; |
| } |
| if (map->map_state != map_state) { |
| dprintf_cont("mark failed"); |
| end_migration(dev, super, map_state); |
| super->updates_pending++; |
| a->last_checkpoint = 0; |
| break; |
| } |
| break; |
| default: |
| dprintf_cont("state %i\n", map_state); |
| } |
| dprintf_cont("\n"); |
| } |
| |
| static int store_imsm_mpb(int fd, struct imsm_super *mpb) |
| { |
| void *buf = mpb; |
| __u32 mpb_size = __le32_to_cpu(mpb->mpb_size); |
| unsigned long long dsize; |
| unsigned long long sectors; |
| unsigned int sector_size; |
| |
| get_dev_sector_size(fd, NULL, §or_size); |
| get_dev_size(fd, NULL, &dsize); |
| |
| if (mpb_size > sector_size) { |
| /* -1 to account for anchor */ |
| sectors = mpb_sectors(mpb, sector_size) - 1; |
| |
| /* write the extended mpb to the sectors preceeding the anchor */ |
| if (lseek64(fd, dsize - (sector_size * (2 + sectors)), |
| SEEK_SET) < 0) |
| return 1; |
| |
| if ((unsigned long long)write(fd, buf + sector_size, |
| sector_size * sectors) != sector_size * sectors) |
| return 1; |
| } |
| |
| /* first block is stored on second to last sector of the disk */ |
| if (lseek64(fd, dsize - (sector_size * 2), SEEK_SET) < 0) |
| return 1; |
| |
| if ((unsigned int)write(fd, buf, sector_size) != sector_size) |
| return 1; |
| |
| return 0; |
| } |
| |
| static void imsm_sync_metadata(struct supertype *container) |
| { |
| struct intel_super *super = container->sb; |
| |
| dprintf("sync metadata: %d\n", super->updates_pending); |
| if (!super->updates_pending) |
| return; |
| |
| write_super_imsm(container, 0); |
| |
| super->updates_pending = 0; |
| } |
| |
| static struct dl *imsm_readd(struct intel_super *super, int idx, struct active_array *a) |
| { |
| struct imsm_dev *dev = get_imsm_dev(super, a->info.container_member); |
| int i = get_imsm_disk_idx(dev, idx, MAP_X); |
| struct dl *dl; |
| |
| for (dl = super->disks; dl; dl = dl->next) |
| if (dl->index == i) |
| break; |
| |
| if (dl && is_failed(&dl->disk)) |
| dl = NULL; |
| |
| if (dl) |
| dprintf("found %x:%x\n", dl->major, dl->minor); |
| |
| return dl; |
| } |
| |
| static struct dl *imsm_add_spare(struct intel_super *super, int slot, |
| struct active_array *a, int activate_new, |
| struct mdinfo *additional_test_list) |
| { |
| struct imsm_dev *dev = get_imsm_dev(super, a->info.container_member); |
| int idx = get_imsm_disk_idx(dev, slot, MAP_X); |
| struct imsm_super *mpb = super->anchor; |
| struct imsm_map *map; |
| unsigned long long pos; |
| struct mdinfo *d; |
| struct extent *ex; |
| int i, j; |
| int found; |
| __u32 array_start = 0; |
| __u32 array_end = 0; |
| struct dl *dl; |
| struct mdinfo *test_list; |
| |
| for (dl = super->disks; dl; dl = dl->next) { |
| /* If in this array, skip */ |
| for (d = a->info.devs ; d ; d = d->next) |
| if (d->state_fd >= 0 && |
| d->disk.major == dl->major && |
| d->disk.minor == dl->minor) { |
| dprintf("%x:%x already in array\n", |
| dl->major, dl->minor); |
| break; |
| } |
| if (d) |
| continue; |
| test_list = additional_test_list; |
| while (test_list) { |
| if (test_list->disk.major == dl->major && |
| test_list->disk.minor == dl->minor) { |
| dprintf("%x:%x already in additional test list\n", |
| dl->major, dl->minor); |
| break; |
| } |
| test_list = test_list->next; |
| } |
| if (test_list) |
| continue; |
| |
| /* skip in use or failed drives */ |
| if (is_failed(&dl->disk) || idx == dl->index || |
| dl->index == -2) { |
| dprintf("%x:%x status (failed: %d index: %d)\n", |
| dl->major, dl->minor, is_failed(&dl->disk), idx); |
| continue; |
| } |
| |
| /* skip pure spares when we are looking for partially |
| * assimilated drives |
| */ |
| if (dl->index == -1 && !activate_new) |
| continue; |
| |
| if (!drive_validate_sector_size(super, dl)) |
| continue; |
| |
| /* Does this unused device have the requisite free space? |
| * It needs to be able to cover all member volumes |
| */ |
| ex = get_extents(super, dl, 1); |
| if (!ex) { |
| dprintf("cannot get extents\n"); |
| continue; |
| } |
| for (i = 0; i < mpb->num_raid_devs; i++) { |
| dev = get_imsm_dev(super, i); |
| map = get_imsm_map(dev, MAP_0); |
| |
| /* check if this disk is already a member of |
| * this array |
| */ |
| if (get_imsm_disk_slot(map, dl->index) >= 0) |
| continue; |
| |
| found = 0; |
| j = 0; |
| pos = 0; |
| array_start = pba_of_lba0(map); |
| array_end = array_start + |
| per_dev_array_size(map) - 1; |
| |
| do { |
| /* check that we can start at pba_of_lba0 with |
| * num_data_stripes*blocks_per_stripe of space |
| */ |
| if (array_start >= pos && array_end < ex[j].start) { |
| found = 1; |
| break; |
| } |
| pos = ex[j].start + ex[j].size; |
| j++; |
| } while (ex[j-1].size); |
| |
| if (!found) |
| break; |
| } |
| |
| free(ex); |
| if (i < mpb->num_raid_devs) { |
| dprintf("%x:%x does not have %u to %u available\n", |
| dl->major, dl->minor, array_start, array_end); |
| /* No room */ |
| continue; |
| } |
| return dl; |
| } |
| |
| return dl; |
| } |
| |
| static int imsm_rebuild_allowed(struct supertype *cont, int dev_idx, int failed) |
| { |
| struct imsm_dev *dev2; |
| struct imsm_map *map; |
| struct dl *idisk; |
| int slot; |
| int idx; |
| __u8 state; |
| |
| dev2 = get_imsm_dev(cont->sb, dev_idx); |
| if (dev2) { |
| state = imsm_check_degraded(cont->sb, dev2, failed, MAP_0); |
| if (state == IMSM_T_STATE_FAILED) { |
| map = get_imsm_map(dev2, MAP_0); |
| if (!map) |
| return 1; |
| for (slot = 0; slot < map->num_members; slot++) { |
| /* |
| * Check if failed disks are deleted from intel |
| * disk list or are marked to be deleted |
| */ |
| idx = get_imsm_disk_idx(dev2, slot, MAP_X); |
| idisk = get_imsm_dl_disk(cont->sb, idx); |
| /* |
| * Do not rebuild the array if failed disks |
| * from failed sub-array are not removed from |
| * container. |
| */ |
| if (idisk && |
| is_failed(&idisk->disk) && |
| (idisk->action != DISK_REMOVE)) |
| return 0; |
| } |
| } |
| } |
| return 1; |
| } |
| |
| static struct mdinfo *imsm_activate_spare(struct active_array *a, |
| struct metadata_update **updates) |
| { |
| /** |
| * Find a device with unused free space and use it to replace a |
| * failed/vacant region in an array. We replace failed regions one a |
| * array at a time. The result is that a new spare disk will be added |
| * to the first failed array and after the monitor has finished |
| * propagating failures the remainder will be consumed. |
| * |
| * FIXME add a capability for mdmon to request spares from another |
| * container. |
| */ |
| |
| struct intel_super *super = a->container->sb; |
| int inst = a->info.container_member; |
| struct imsm_dev *dev = get_imsm_dev(super, inst); |
| struct imsm_map *map = get_imsm_map(dev, MAP_0); |
| int failed = a->info.array.raid_disks; |
| struct mdinfo *rv = NULL; |
| struct mdinfo *d; |
| struct mdinfo *di; |
| struct metadata_update *mu; |
| struct dl *dl; |
| struct imsm_update_activate_spare *u; |
| int num_spares = 0; |
| int i; |
| int allowed; |
| |
| for (d = a->info.devs ; d ; d = d->next) { |
| if ((d->curr_state & DS_FAULTY) && |
| d->state_fd >= 0) |
| /* wait for Removal to happen */ |
| return NULL; |
| if (d->state_fd >= 0) |
| failed--; |
| } |
| |
| dprintf("imsm: activate spare: inst=%d failed=%d (%d) level=%d\n", |
| inst, failed, a->info.array.raid_disks, a->info.array.level); |
| |
| if (imsm_reshape_blocks_arrays_changes(super)) |
| return NULL; |
| |
| /* Cannot activate another spare if rebuild is in progress already |
| */ |
| if (is_rebuilding(dev)) { |
| dprintf("imsm: No spare activation allowed. Rebuild in progress already.\n"); |
| return NULL; |
| } |
| |
| if (a->info.array.level == 4) |
| /* No repair for takeovered array |
| * imsm doesn't support raid4 |
| */ |
| return NULL; |
| |
| if (imsm_check_degraded(super, dev, failed, MAP_0) != |
| IMSM_T_STATE_DEGRADED) |
| return NULL; |
| |
| if (get_imsm_map(dev, MAP_0)->map_state == IMSM_T_STATE_UNINITIALIZED) { |
| dprintf("imsm: No spare activation allowed. Volume is not initialized.\n"); |
| return NULL; |
| } |
| |
| /* |
| * If there are any failed disks check state of the other volume. |
| * Block rebuild if the another one is failed until failed disks |
| * are removed from container. |
| */ |
| if (failed) { |
| dprintf("found failed disks in %.*s, check if there anotherfailed sub-array.\n", |
| MAX_RAID_SERIAL_LEN, dev->volume); |
| /* check if states of the other volumes allow for rebuild */ |
| for (i = 0; i < super->anchor->num_raid_devs; i++) { |
| if (i != inst) { |
| allowed = imsm_rebuild_allowed(a->container, |
| i, failed); |
| if (!allowed) |
| return NULL; |
| } |
| } |
| } |
| |
| /* For each slot, if it is not working, find a spare */ |
| for (i = 0; i < a->info.array.raid_disks; i++) { |
| for (d = a->info.devs ; d ; d = d->next) |
| if (d->disk.raid_disk == i) |
| break; |
| dprintf("found %d: %p %x\n", i, d, d?d->curr_state:0); |
| if (d && (d->state_fd >= 0)) |
| continue; |
| |
| /* |
| * OK, this device needs recovery. Try to re-add the |
| * previous occupant of this slot, if this fails see if |
| * we can continue the assimilation of a spare that was |
| * partially assimilated, finally try to activate a new |
| * spare. |
| */ |
| dl = imsm_readd(super, i, a); |
| if (!dl) |
| dl = imsm_add_spare(super, i, a, 0, rv); |
| if (!dl) |
| dl = imsm_add_spare(super, i, a, 1, rv); |
| if (!dl) |
| continue; |
| |
| /* found a usable disk with enough space */ |
| di = xcalloc(1, sizeof(*di)); |
| |
| /* dl->index will be -1 in the case we are activating a |
| * pristine spare. imsm_process_update() will create a |
| * new index in this case. Once a disk is found to be |
| * failed in all member arrays it is kicked from the |
| * metadata |
| */ |
| di->disk.number = dl->index; |
| |
| /* (ab)use di->devs to store a pointer to the device |
| * we chose |
| */ |
| di->devs = (struct mdinfo *) dl; |
| |
| di->disk.raid_disk = i; |
| di->disk.major = dl->major; |
| di->disk.minor = dl->minor; |
| di->disk.state = 0; |
| di->recovery_start = 0; |
| di->data_offset = pba_of_lba0(map); |
| di->component_size = a->info.component_size; |
| di->container_member = inst; |
| di->bb.supported = 1; |
| if (a->info.consistency_policy == CONSISTENCY_POLICY_PPL) { |
| di->ppl_sector = get_ppl_sector(super, inst); |
| di->ppl_size = MULTIPLE_PPL_AREA_SIZE_IMSM >> 9; |
| } |
| super->random = random32(); |
| di->next = rv; |
| rv = di; |
| num_spares++; |
| dprintf("%x:%x to be %d at %llu\n", dl->major, dl->minor, |
| i, di->data_offset); |
| } |
| |
| if (!rv) |
| /* No spares found */ |
| return rv; |
| /* Now 'rv' has a list of devices to return. |
| * Create a metadata_update record to update the |
| * disk_ord_tbl for the array |
| */ |
| mu = xmalloc(sizeof(*mu)); |
| mu->buf = xcalloc(num_spares, |
| sizeof(struct imsm_update_activate_spare)); |
| mu->space = NULL; |
| mu->space_list = NULL; |
| mu->len = sizeof(struct imsm_update_activate_spare) * num_spares; |
| mu->next = *updates; |
| u = (struct imsm_update_activate_spare *) mu->buf; |
| |
| for (di = rv ; di ; di = di->next) { |
| u->type = update_activate_spare; |
| u->dl = (struct dl *) di->devs; |
| di->devs = NULL; |
| u->slot = di->disk.raid_disk; |
| u->array = inst; |
| u->next = u + 1; |
| u++; |
| } |
| (u-1)->next = NULL; |
| *updates = mu; |
| |
| return rv; |
| } |
| |
| static int disks_overlap(struct intel_super *super, int idx, struct imsm_update_create_array *u) |
| { |
| struct imsm_dev *dev = get_imsm_dev(super, idx); |
| struct imsm_map *map = get_imsm_map(dev, MAP_0); |
| struct imsm_map *new_map = get_imsm_map(&u->dev, MAP_0); |
| struct disk_info *inf = get_disk_info(u); |
| struct imsm_disk *disk; |
| int i; |
| int j; |
| |
| for (i = 0; i < map->num_members; i++) { |
| disk = get_imsm_disk(super, get_imsm_disk_idx(dev, i, MAP_X)); |
| for (j = 0; j < new_map->num_members; j++) |
| if (serialcmp(disk->serial, inf[j].serial) == 0) |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| static struct dl *get_disk_super(struct intel_super *super, int major, int minor) |
| { |
| struct dl *dl; |
| |
| for (dl = super->disks; dl; dl = dl->next) |
| if (dl->major == major && dl->minor == minor) |
| return dl; |
| return NULL; |
| } |
| |
| static int remove_disk_super(struct intel_super *super, int major, int minor) |
| { |
| struct dl *prev; |
| struct dl *dl; |
| |
| prev = NULL; |
| for (dl = super->disks; dl; dl = dl->next) { |
| if (dl->major == major && dl->minor == minor) { |
| /* remove */ |
| if (prev) |
| prev->next = dl->next; |
| else |
| super->disks = dl->next; |
| dl->next = NULL; |
| __free_imsm_disk(dl); |
| dprintf("removed %x:%x\n", major, minor); |
| break; |
| } |
| prev = dl; |
| } |
| return 0; |
| } |
| |
| static void imsm_delete(struct intel_super *super, struct dl **dlp, unsigned index); |
| |
| static int add_remove_disk_update(struct intel_super *super) |
| { |
| int check_degraded = 0; |
| struct dl *disk; |
| |
| /* add/remove some spares to/from the metadata/contrainer */ |
| while (super->disk_mgmt_list) { |
| struct dl *disk_cfg; |
| |
| disk_cfg = super->disk_mgmt_list; |
| super->disk_mgmt_list = disk_cfg->next; |
| disk_cfg->next = NULL; |
| |
| if (disk_cfg->action == DISK_ADD) { |
| disk_cfg->next = super->disks; |
| super->disks = disk_cfg; |
| check_degraded = 1; |
| dprintf("added %x:%x\n", |
| disk_cfg->major, disk_cfg->minor); |
| } else if (disk_cfg->action == DISK_REMOVE) { |
| dprintf("Disk remove action processed: %x.%x\n", |
| disk_cfg->major, disk_cfg->minor); |
| disk = get_disk_super(super, |
| disk_cfg->major, |
| disk_cfg->minor); |
| if (disk) { |
| /* store action status */ |
| disk->action = DISK_REMOVE; |
| /* remove spare disks only */ |
| if (disk->index == -1) { |
| remove_disk_super(super, |
| disk_cfg->major, |
| disk_cfg->minor); |
| } else { |
| disk_cfg->fd = disk->fd; |
| disk->fd = -1; |
| } |
| } |
| /* release allocate disk structure */ |
| __free_imsm_disk(disk_cfg); |
| } |
| } |
| return check_degraded; |
| } |
| |
| static int apply_reshape_migration_update(struct imsm_update_reshape_migration *u, |
| struct intel_super *super, |
| void ***space_list) |
| { |
| struct intel_dev *id; |
| void **tofree = NULL; |
| int ret_val = 0; |
| |
| dprintf("(enter)\n"); |
| if (u->subdev < 0 || u->subdev > 1) { |
| dprintf("imsm: Error: Wrong subdev: %i\n", u->subdev); |
| return ret_val; |
| } |
| if (space_list == NULL || *space_list == NULL) { |
| dprintf("imsm: Error: Memory is not allocated\n"); |
| return ret_val; |
| } |
| |
| for (id = super->devlist ; id; id = id->next) { |
| if (id->index == (unsigned)u->subdev) { |
| struct imsm_dev *dev = get_imsm_dev(super, u->subdev); |
| struct imsm_map *map; |
| struct imsm_dev *new_dev = |
| (struct imsm_dev *)*space_list; |
| struct imsm_map *migr_map = get_imsm_map(dev, MAP_1); |
| int to_state; |
| struct dl *new_disk; |
| |
| if (new_dev == NULL) |
| return ret_val; |
| *space_list = **space_list; |
| memcpy(new_dev, dev, sizeof_imsm_dev(dev, 0)); |
| map = get_imsm_map(new_dev, MAP_0); |
| if (migr_map) { |
| dprintf("imsm: Error: migration in progress"); |
| return ret_val; |
| } |
| |
| to_state = map->map_state; |
| if ((u->new_level == 5) && (map->raid_level == 0)) { |
| map->num_members++; |
| /* this should not happen */ |
| if (u->new_disks[0] < 0) { |
| map->failed_disk_num = |
| map->num_members - 1; |
| to_state = IMSM_T_STATE_DEGRADED; |
| } else |
| to_state = IMSM_T_STATE_NORMAL; |
| } |
| migrate(new_dev, super, to_state, MIGR_GEN_MIGR); |
| if (u->new_level > -1) |
| map->raid_level = u->new_level; |
| migr_map = get_imsm_map(new_dev, MAP_1); |
| if ((u->new_level == 5) && |
| (migr_map->raid_level == 0)) { |
| int ord = map->num_members - 1; |
| migr_map->num_members--; |
| if (u->new_disks[0] < 0) |
| ord |= IMSM_ORD_REBUILD; |
| set_imsm_ord_tbl_ent(map, |
| map->num_members - 1, |
| ord); |
| } |
| id->dev = new_dev; |
| tofree = (void **)dev; |
| |
| /* update chunk size |
| */ |
| if (u->new_chunksize > 0) { |
| unsigned long long num_data_stripes; |
| struct imsm_map *dest_map = |
| get_imsm_map(dev, MAP_0); |
| int used_disks = |
| imsm_num_data_members(dest_map); |
| |
| if (used_disks == 0) |
| return ret_val; |
| |
| map->blocks_per_strip = |
| __cpu_to_le16(u->new_chunksize * 2); |
| num_data_stripes = |
| imsm_dev_size(dev) / used_disks; |
| num_data_stripes /= map->blocks_per_strip; |
| num_data_stripes /= map->num_domains; |
| set_num_data_stripes(map, num_data_stripes); |
| } |
| |
| /* ensure blocks_per_member has valid value |
| */ |
| set_blocks_per_member(map, |
| per_dev_array_size(map) + |
| NUM_BLOCKS_DIRTY_STRIPE_REGION); |
| |
| /* add disk |
| */ |
| if (u->new_level != 5 || migr_map->raid_level != 0 || |
| migr_map->raid_level == map->raid_level) |
| goto skip_disk_add; |
| |
| if (u->new_disks[0] >= 0) { |
| /* use passes spare |
| */ |
| new_disk = get_disk_super(super, |
| major(u->new_disks[0]), |
| minor(u->new_disks[0])); |
| dprintf("imsm: new disk for reshape is: %i:%i (%p, index = %i)\n", |
| major(u->new_disks[0]), |
| minor(u->new_disks[0]), |
| new_disk, new_disk->index); |
| if (new_disk == NULL) |
| goto error_disk_add; |
| |
| new_disk->index = map->num_members - 1; |
| /* slot to fill in autolayout |
| */ |
| new_disk->raiddisk = new_disk->index; |
| new_disk->disk.status |= CONFIGURED_DISK; |
| new_disk->disk.status &= ~SPARE_DISK; |
| } else |
| goto error_disk_add; |
| |
| skip_disk_add: |
| *tofree = *space_list; |
| /* calculate new size |
| */ |
| imsm_set_array_size(new_dev, -1); |
| |
| ret_val = 1; |
| } |
| } |
| |
| if (tofree) |
| *space_list = tofree; |
| return ret_val; |
| |
| error_disk_add: |
| dprintf("Error: imsm: Cannot find disk.\n"); |
| return ret_val; |
| } |
| |
| static int apply_size_change_update(struct imsm_update_size_change *u, |
| struct intel_super *super) |
| { |
| struct intel_dev *id; |
| int ret_val = 0; |
| |
| dprintf("(enter)\n"); |
| if (u->subdev < 0 || u->subdev > 1) { |
| dprintf("imsm: Error: Wrong subdev: %i\n", u->subdev); |
| return ret_val; |
| } |
| |
| for (id = super->devlist ; id; id = id->next) { |
| if (id->index == (unsigned)u->subdev) { |
| struct imsm_dev *dev = get_imsm_dev(super, u->subdev); |
| struct imsm_map *map = get_imsm_map(dev, MAP_0); |
| int used_disks = imsm_num_data_members(map); |
| unsigned long long blocks_per_member; |
| unsigned long long num_data_stripes; |
| unsigned long long new_size_per_disk; |
| |
| if (used_disks == 0) |
| return 0; |
| |
| /* calculate new size |
| */ |
| new_size_per_disk = u->new_size / used_disks; |
| blocks_per_member = new_size_per_disk + |
| NUM_BLOCKS_DIRTY_STRIPE_REGION; |
| num_data_stripes = new_size_per_disk / |
| map->blocks_per_strip; |
| num_data_stripes /= map->num_domains; |
| dprintf("(size: %llu, blocks per member: %llu, num_data_stipes: %llu)\n", |
| u->new_size, new_size_per_disk, |
| num_data_stripes); |
| set_blocks_per_member(map, blocks_per_member); |
| set_num_data_stripes(map, num_data_stripes); |
| imsm_set_array_size(dev, u->new_size); |
| |
| ret_val = 1; |
| break; |
| } |
| } |
| |
| return ret_val; |
| } |
| |
| static int prepare_spare_to_activate(struct supertype *st, |
| struct imsm_update_activate_spare *u) |
| { |
| struct intel_super *super = st->sb; |
| int prev_current_vol = super->current_vol; |
| struct active_array *a; |
| int ret = 1; |
| |
| for (a = st->arrays; a; a = a->next) |
| /* |
| * Additional initialization (adding bitmap header, filling |
| * the bitmap area with '1's to force initial rebuild for a whole |
| * data-area) is required when adding the spare to the volume |
| * with write-intent bitmap. |
| */ |
| if (a->info.container_member == u->array && |
| a->info.consistency_policy == CONSISTENCY_POLICY_BITMAP) { |
| struct dl *dl; |
| |
| for (dl = super->disks; dl; dl = dl->next) |
| if (dl == u->dl) |
| break; |
| if (!dl) |
| break; |
| |
| super->current_vol = u->array; |
| if (st->ss->write_bitmap(st, dl->fd, NoUpdate)) |
| ret = 0; |
| super->current_vol = prev_current_vol; |
| } |
| return ret; |
| } |
| |
| static int apply_update_activate_spare(struct imsm_update_activate_spare *u, |
| struct intel_super *super, |
| struct active_array *active_array) |
| { |
| struct imsm_super *mpb = super->anchor; |
| struct imsm_dev *dev = get_imsm_dev(super, u->array); |
| struct imsm_map *map = get_imsm_map(dev, MAP_0); |
| struct imsm_map *migr_map; |
| struct active_array *a; |
| struct imsm_disk *disk; |
| __u8 to_state; |
| struct dl *dl; |
| unsigned int found; |
| int failed; |
| int victim; |
| int i; |
| int second_map_created = 0; |
| |
| for (; u; u = u->next) { |
| victim = get_imsm_disk_idx(dev, u->slot, MAP_X); |
| |
| if (victim < 0) |
| return 0; |
| |
| for (dl = super->disks; dl; dl = dl->next) |
| if (dl == u->dl) |
| break; |
| |
| if (!dl) { |
| pr_err("error: imsm_activate_spare passed an unknown disk (index: %d)\n", |
| u->dl->index); |
| return 0; |
| } |
| |
| /* count failures (excluding rebuilds and the victim) |
| * to determine map[0] state |
| */ |
| failed = 0; |
| for (i = 0; i < map->num_members; i++) { |
| if (i == u->slot) |
| continue; |
| disk = get_imsm_disk(super, |
| get_imsm_disk_idx(dev, i, MAP_X)); |
| if (!disk || is_failed(disk)) |
| failed++; |
| } |
| |
| /* adding a pristine spare, assign a new index */ |
| if (dl->index < 0) { |
| dl->index = super->anchor->num_disks; |
| super->anchor->num_disks++; |
| } |
| disk = &dl->disk; |
| disk->status |= CONFIGURED_DISK; |
| disk->status &= ~SPARE_DISK; |
| |
| /* mark rebuild */ |
| to_state = imsm_check_degraded(super, dev, failed, MAP_0); |
| if (!second_map_created) { |
| second_map_created = 1; |
| map->map_state = IMSM_T_STATE_DEGRADED; |
| migrate(dev, super, to_state, MIGR_REBUILD); |
| } else |
| map->map_state = to_state; |
| migr_map = get_imsm_map(dev, MAP_1); |
| set_imsm_ord_tbl_ent(map, u->slot, dl->index); |
| set_imsm_ord_tbl_ent(migr_map, u->slot, |
| dl->index | IMSM_ORD_REBUILD); |
| |
| /* update the family_num to mark a new container |
| * generation, being careful to record the existing |
| * family_num in orig_family_num to clean up after |
| * earlier mdadm versions that neglected to set it. |
| */ |
| if (mpb->orig_family_num == 0) |
| mpb->orig_family_num = mpb->family_num; |
| mpb->family_num += super->random; |
| |
| /* count arrays using the victim in the metadata */ |
| found = 0; |
| for (a = active_array; a ; a = a->next) { |
| dev = get_imsm_dev(super, a->info.container_member); |
| map = get_imsm_map(dev, MAP_0); |
| |
| if (get_imsm_disk_slot(map, victim) >= 0) |
| found++; |
| } |
| |
| /* delete the victim if it is no longer being |
| * utilized anywhere |
| */ |
| if (!found) { |
| struct dl **dlp; |
| |
| /* We know that 'manager' isn't touching anything, |
| * so it is safe to delete |
| */ |
| for (dlp = &super->disks; *dlp; dlp = &(*dlp)->next) |
| if ((*dlp)->index == victim) |
| break; |
| |
| /* victim may be on the missing list */ |
| if (!*dlp) |
| for (dlp = &super->missing; *dlp; |
| dlp = &(*dlp)->next) |
| if ((*dlp)->index == victim) |
| break; |
| imsm_delete(super, dlp, victim); |
| } |
| } |
| |
| return 1; |
| } |
| |
| static int apply_reshape_container_disks_update(struct imsm_update_reshape *u, |
| struct intel_super *super, |
| void ***space_list) |
| { |
| struct dl *new_disk; |
| struct intel_dev *id; |
| int i; |
| int delta_disks = u->new_raid_disks - u->old_raid_disks; |
| int disk_count = u->old_raid_disks; |
| void **tofree = NULL; |
| int devices_to_reshape = 1; |
| struct imsm_super *mpb = super->anchor; |
| int ret_val = 0; |
| unsigned int dev_id; |
| |
| dprintf("(enter)\n"); |
| |
| /* enable spares to use in array */ |
| for (i = 0; i < delta_disks; i++) { |
| new_disk = get_disk_super(super, |
| major(u->new_disks[i]), |
| minor(u->new_disks[i])); |
| dprintf("imsm: new disk for reshape is: %i:%i (%p, index = %i)\n", |
| major(u->new_disks[i]), minor(u->new_disks[i]), |
| new_disk, new_disk->index); |
| if (new_disk == NULL || |
| (new_disk->index >= 0 && |
| new_disk->index < u->old_raid_disks)) |
| goto update_reshape_exit; |
| new_disk->index = disk_count++; |
| /* slot to fill in autolayout |
| */ |
| new_disk->raiddisk = new_disk->index; |
| new_disk->disk.status |= |
| CONFIGURED_DISK; |
| new_disk->disk.status &= ~SPARE_DISK; |
| } |
| |
| dprintf("imsm: volume set mpb->num_raid_devs = %i\n", |
| mpb->num_raid_devs); |
| /* manage changes in volume |
| */ |
| for (dev_id = 0; dev_id < mpb->num_raid_devs; dev_id++) { |
| void **sp = *space_list; |
| struct imsm_dev *newdev; |
| struct imsm_map *newmap, *oldmap; |
| |
| for (id = super->devlist ; id; id = id->next) { |
| if (id->index == dev_id) |
| break; |
| } |
| if (id == NULL) |
| break; |
| if (!sp) |
| continue; |
| *space_list = *sp; |
| newdev = (void*)sp; |
| /* Copy the dev, but not (all of) the map */ |
| memcpy(newdev, id->dev, sizeof(*newdev)); |
| oldmap = get_imsm_map(id->dev, MAP_0); |
| newmap = get_imsm_map(newdev, MAP_0); |
| /* Copy the current map */ |
| memcpy(newmap, oldmap, sizeof_imsm_map(oldmap)); |
| /* update one device only |
| */ |
| if (devices_to_reshape) { |
| dprintf("imsm: modifying subdev: %i\n", |
| id->index); |
| devices_to_reshape--; |
| newdev->vol.migr_state = 1; |
| set_vol_curr_migr_unit(newdev, 0); |
| set_migr_type(newdev, MIGR_GEN_MIGR); |
| newmap->num_members = u->new_raid_disks; |
| for (i = 0; i < delta_disks; i++) { |
| set_imsm_ord_tbl_ent(newmap, |
| u->old_raid_disks + i, |
| u->old_raid_disks + i); |
| } |
| /* New map is correct, now need to save old map |
| */ |
| newmap = get_imsm_map(newdev, MAP_1); |
| memcpy(newmap, oldmap, sizeof_imsm_map(oldmap)); |
| |
| imsm_set_array_size(newdev, -1); |
| } |
| |
| sp = (void **)id->dev; |
| id->dev = newdev; |
| *sp = tofree; |
| tofree = sp; |
| |
| /* Clear migration record */ |
| memset(super->migr_rec, 0, sizeof(struct migr_record)); |
| } |
| if (tofree) |
| *space_list = tofree; |
| ret_val = 1; |
| |
| update_reshape_exit: |
| |
| return ret_val; |
| } |
| |
| static int apply_takeover_update(struct imsm_update_takeover *u, |
| struct intel_super *super, |
| void ***space_list) |
| { |
| struct imsm_dev *dev = NULL; |
| struct intel_dev *dv; |
| struct imsm_dev *dev_new; |
| struct imsm_map *map; |
| struct dl *dm, *du; |
| int i; |
| |
| for (dv = super->devlist; dv; dv = dv->next) |
| if (dv->index == (unsigned int)u->subarray) { |
| dev = dv->dev; |
| break; |
| } |
| |
| if (dev == NULL) |
| return 0; |
| |
| map = get_imsm_map(dev, MAP_0); |
| |
| if (u->direction == R10_TO_R0) { |
| unsigned long long num_data_stripes; |
| |
| /* Number of failed disks must be half of initial disk number */ |
| if (imsm_count_failed(super, dev, MAP_0) != |
| (map->num_members / 2)) |
| return 0; |
| |
| /* iterate through devices to mark removed disks as spare */ |
| for (dm = super->disks; dm; dm = dm->next) { |
| if (dm->disk.status & FAILED_DISK) { |
| int idx = dm->index; |
| /* update indexes on the disk list */ |
| /* FIXME this loop-with-the-loop looks wrong, I'm not convinced |
| the index values will end up being correct.... NB */ |
| for (du = super->disks; du; du = du->next) |
| if (du->index > idx) |
| du->index--; |
| /* mark as spare disk */ |
| mark_spare(dm); |
| } |
| } |
| /* update map */ |
| map->num_members = map->num_members / 2; |
| map->map_state = IMSM_T_STATE_NORMAL; |
| map->num_domains = 1; |
| map->raid_level = 0; |
| map->failed_disk_num = -1; |
| num_data_stripes = imsm_dev_size(dev) / 2; |
| num_data_stripes /= map->blocks_per_strip; |
| set_num_data_stripes(map, num_data_stripes); |
| } |
| |
| if (u->direction == R0_TO_R10) { |
| void **space; |
| unsigned long long num_data_stripes; |
| |
| /* update slots in current disk list */ |
| for (dm = super->disks; dm; dm = dm->next) { |
| if (dm->index >= 0) |
| dm->index *= 2; |
| } |
| /* create new *missing* disks */ |
| for (i = 0; i < map->num_members; i++) { |
| space = *space_list; |
| if (!space) |
| continue; |
| *space_list = *space; |
| du = (void *)space; |
| memcpy(du, super->disks, sizeof(*du)); |
| du->fd = -1; |
| du->minor = 0; |
| du->major = 0; |
| du->index = (i * 2) + 1; |
| sprintf((char *)du->disk.serial, |
| " MISSING_%d", du->index); |
| sprintf((char *)du->serial, |
| "MISSING_%d", du->index); |
| du->next = super->missing; |
| super->missing = du; |
| } |
| /* create new dev and map */ |
| space = *space_list; |
| if (!space) |
| return 0; |
| *space_list = *space; |
| dev_new = (void *)space; |
| memcpy(dev_new, dev, sizeof(*dev)); |
| /* update new map */ |
| map = get_imsm_map(dev_new, MAP_0); |
| map->num_members = map->num_members * 2; |
| map->map_state = IMSM_T_STATE_DEGRADED; |
| map->num_domains = 2; |
| map->raid_level = 1; |
| num_data_stripes = imsm_dev_size(dev) / 2; |
| num_data_stripes /= map->blocks_per_strip; |
| num_data_stripes /= map->num_domains; |
| set_num_data_stripes(map, num_data_stripes); |
| |
| /* replace dev<->dev_new */ |
| dv->dev = dev_new; |
| } |
| /* update disk order table */ |
| for (du = super->disks; du; du = du->next) |
| if (du->index >= 0) |
| set_imsm_ord_tbl_ent(map, du->index, du->index); |
| for (du = super->missing; du; du = du->next) |
| if (du->index >= 0) { |
| set_imsm_ord_tbl_ent(map, du->index, du->index); |
| mark_missing(super, dv->dev, &du->disk, du->index); |
| } |
| |
| return 1; |
| } |
| |
| static void imsm_process_update(struct supertype *st, |
| struct metadata_update *update) |
| { |
| /** |
| * crack open the metadata_update envelope to find the update record |
| * update can be one of: |
| * update_reshape_container_disks - all the arrays in the container |
| * are being reshaped to have more devices. We need to mark |
| * the arrays for general migration and convert selected spares |
| * into active devices. |
| * update_activate_spare - a spare device has replaced a failed |
| * device in an array, update the disk_ord_tbl. If this disk is |
| * present in all member arrays then also clear the SPARE_DISK |
| * flag |
| * update_create_array |
| * update_kill_array |
| * update_rename_array |
| * update_add_remove_disk |
| */ |
| struct intel_super *super = st->sb; |
| struct imsm_super *mpb; |
| enum imsm_update_type type = *(enum imsm_update_type *) update->buf; |
| |
| /* update requires a larger buf but the allocation failed */ |
| if (super->next_len && !super->next_buf) { |
| super->next_len = 0; |
| return; |
| } |
| |
| if (super->next_buf) { |
| memcpy(super->next_buf, super->buf, super->len); |
| free(super->buf); |
| super->len = super->next_len; |
| super->buf = super->next_buf; |
| |
| super->next_len = 0; |
| super->next_buf = NULL; |
| } |
| |
| mpb = super->anchor; |
| |
| switch (type) { |
| case update_general_migration_checkpoint: { |
| struct intel_dev *id; |
| struct imsm_update_general_migration_checkpoint *u = |
| (void *)update->buf; |
| |
| dprintf("called for update_general_migration_checkpoint\n"); |
| |
| /* find device under general migration */ |
| for (id = super->devlist ; id; id = id->next) { |
| if (is_gen_migration(id->dev)) { |
| set_vol_curr_migr_unit(id->dev, |
| u->curr_migr_unit); |
| super->updates_pending++; |
| } |
| } |
| break; |
| } |
| case update_takeover: { |
| struct imsm_update_takeover *u = (void *)update->buf; |
| if (apply_takeover_update(u, super, &update->space_list)) { |
| imsm_update_version_info(super); |
| super->updates_pending++; |
| } |
| break; |
| } |
| |
| case update_reshape_container_disks: { |
| struct imsm_update_reshape *u = (void *)update->buf; |
| if (apply_reshape_container_disks_update( |
| u, super, &update->space_list)) |
| super->updates_pending++; |
| break; |
| } |
| case update_reshape_migration: { |
| struct imsm_update_reshape_migration *u = (void *)update->buf; |
| if (apply_reshape_migration_update( |
| u, super, &update->space_list)) |
| super->updates_pending++; |
| break; |
| } |
| case update_size_change: { |
| struct imsm_update_size_change *u = (void *)update->buf; |
| if (apply_size_change_update(u, super)) |
| super->updates_pending++; |
| break; |
| } |
| case update_activate_spare: { |
| struct imsm_update_activate_spare *u = (void *) update->buf; |
| |
| if (prepare_spare_to_activate(st, u) && |
| apply_update_activate_spare(u, super, st->arrays)) |
| super->updates_pending++; |
| break; |
| } |
| case update_create_array: { |
| /* someone wants to create a new array, we need to be aware of |
| * a few races/collisions: |
| * 1/ 'Create' called by two separate instances of mdadm |
| * 2/ 'Create' versus 'activate_spare': mdadm has chosen |
| * devices that have since been assimilated via |
| * activate_spare. |
| * In the event this update can not be carried out mdadm will |
| * (FIX ME) notice that its update did not take hold. |
| */ |
| struct imsm_update_create_array *u = (void *) update->buf; |
| struct intel_dev *dv; |
| struct imsm_dev *dev; |
| struct imsm_map *map, *new_map; |
| unsigned long long start, end; |
| unsigned long long new_start, new_end; |
| int i; |
| struct disk_info *inf; |
| struct dl *dl; |
| |
| /* handle racing creates: first come first serve */ |
| if (u->dev_idx < mpb->num_raid_devs) { |
| dprintf("subarray %d already defined\n", u->dev_idx); |
| goto create_error; |
| } |
| |
| /* check update is next in sequence */ |
| if (u->dev_idx != mpb->num_raid_devs) { |
| dprintf("can not create array %d expected index %d\n", |
| u->dev_idx, mpb->num_raid_devs); |
| goto create_error; |
| } |
| |
| new_map = get_imsm_map(&u->dev, MAP_0); |
| new_start = pba_of_lba0(new_map); |
| new_end = new_start + per_dev_array_size(new_map); |
| inf = get_disk_info(u); |
| |
| /* handle activate_spare versus create race: |
| * check to make sure that overlapping arrays do not include |
| * overalpping disks |
| */ |
| for (i = 0; i < mpb->num_raid_devs; i++) { |
| dev = get_imsm_dev(super, i); |
| map = get_imsm_map(dev, MAP_0); |
| start = pba_of_lba0(map); |
| end = start + per_dev_array_size(map); |
| if ((new_start >= start && new_start <= end) || |
| (start >= new_start && start <= new_end)) |
| /* overlap */; |
| else |
| continue; |
| |
| if (disks_overlap(super, i, u)) { |
| dprintf("arrays overlap\n"); |
| goto create_error; |
| } |
| } |
| |
| /* check that prepare update was successful */ |
| if (!update->space) { |
| dprintf("prepare update failed\n"); |
| goto create_error; |
| } |
| |
| /* check that all disks are still active before committing |
| * changes. FIXME: could we instead handle this by creating a |
| * degraded array? That's probably not what the user expects, |
| * so better to drop this update on the floor. |
| */ |
| for (i = 0; i < new_map->num_members; i++) { |
| dl = serial_to_dl(inf[i].serial, super); |
| if (!dl) { |
| dprintf("disk disappeared\n"); |
| goto create_error; |
| } |
| } |
| |
| super->updates_pending++; |
| |
| /* convert spares to members and fixup ord_tbl */ |
| for (i = 0; i < new_map->num_members; i++) { |
| dl = serial_to_dl(inf[i].serial, super); |
| if (dl->index == -1) { |
| dl->index = mpb->num_disks; |
| mpb->num_disks++; |
| dl->disk.status |= CONFIGURED_DISK; |
| dl->disk.status &= ~SPARE_DISK; |
| } |
| set_imsm_ord_tbl_ent(new_map, i, dl->index); |
| } |
| |
| dv = update->space; |
| dev = dv->dev; |
| update->space = NULL; |
| imsm_copy_dev(dev, &u->dev); |
| dv->index = u->dev_idx; |
| dv->next = super->devlist; |
| super->devlist = dv; |
| mpb->num_raid_devs++; |
| |
| imsm_update_version_info(super); |
| break; |
| create_error: |
| /* mdmon knows how to release update->space, but not |
| * ((struct intel_dev *) update->space)->dev |
| */ |
| if (update->space) { |
| dv = update->space; |
| free(dv->dev); |
| } |
| break; |
| } |
| case update_kill_array: { |
| struct imsm_update_kill_array *u = (void *) update->buf; |
| int victim = u->dev_idx; |
| struct active_array *a; |
| struct intel_dev **dp; |
| struct imsm_dev *dev; |
| |
| /* sanity check that we are not affecting the uuid of |
| * active arrays, or deleting an active array |
| * |
| * FIXME when immutable ids are available, but note that |
| * we'll also need to fixup the invalidated/active |
| * subarray indexes in mdstat |
| */ |
| for (a = st->arrays; a; a = a->next) |
| if (a->info.container_member >= victim) |
| break; |
| /* by definition if mdmon is running at least one array |
| * is active in the container, so checking |
| * mpb->num_raid_devs is just extra paranoia |
| */ |
| dev = get_imsm_dev(super, victim); |
| if (a || !dev || mpb->num_raid_devs == 1) { |
| dprintf("failed to delete subarray-%d\n", victim); |
| break; |
| } |
| |
| for (dp = &super->devlist; *dp;) |
| if ((*dp)->index == (unsigned)super->current_vol) { |
| *dp = (*dp)->next; |
| } else { |
| if ((*dp)->index > (unsigned)victim) |
| (*dp)->index--; |
| dp = &(*dp)->next; |
| } |
| mpb->num_raid_devs--; |
| super->updates_pending++; |
| break; |
| } |
| case update_rename_array: { |
| struct imsm_update_rename_array *u = (void *) update->buf; |
| char name[MAX_RAID_SERIAL_LEN+1]; |
| int target = u->dev_idx; |
| struct active_array *a; |
| struct imsm_dev *dev; |
| |
| /* sanity check that we are not affecting the uuid of |
| * an active array |
| */ |
| memset(name, 0, sizeof(name)); |
| snprintf(name, MAX_RAID_SERIAL_LEN, "%s", (char *) u->name); |
| name[MAX_RAID_SERIAL_LEN] = '\0'; |
| for (a = st->arrays; a; a = a->next) |
| if (a->info.container_member == target) |
| break; |
| dev = get_imsm_dev(super, u->dev_idx); |
| if (a || !dev || !check_name(super, name, 1)) { |
| dprintf("failed to rename subarray-%d\n", target); |
| break; |
| } |
| |
| memcpy(dev->volume, name, MAX_RAID_SERIAL_LEN); |
| super->updates_pending++; |
| break; |
| } |
| case update_add_remove_disk: { |
| /* we may be able to repair some arrays if disks are |
| * being added, check the status of add_remove_disk |
| * if discs has been added. |
| */ |
| if (add_remove_disk_update(super)) { |
| struct active_array *a; |
| |
| super->updates_pending++; |
| for (a = st->arrays; a; a = a->next) |
| a->check_degraded = 1; |
| } |
| break; |
| } |
| case update_prealloc_badblocks_mem: |
| break; |
| case update_rwh_policy: { |
| struct imsm_update_rwh_policy *u = (void *)update->buf; |
| int target = u->dev_idx; |
| struct imsm_dev *dev = get_imsm_dev(super, target); |
| if (!dev) { |
| dprintf("could not find subarray-%d\n", target); |
| break; |
| } |
| |
| if (dev->rwh_policy != u->new_policy) { |
| dev->rwh_policy = u->new_policy; |
| super->updates_pending++; |
| } |
| break; |
| } |
| default: |
| pr_err("error: unsupported process update type:(type: %d)\n", type); |
| } |
| } |
| |
| static struct mdinfo *get_spares_for_grow(struct supertype *st); |
| |
| static int imsm_prepare_update(struct supertype *st, |
| struct metadata_update *update) |
| { |
| /** |
| * Allocate space to hold new disk entries, raid-device entries or a new |
| * mpb if necessary. The manager synchronously waits for updates to |
| * complete in the monitor, so new mpb buffers allocated here can be |
| * integrated by the monitor thread without worrying about live pointers |
| * in the manager thread. |
| */ |
| enum imsm_update_type type; |
| struct intel_super *super = st->sb; |
| unsigned int sector_size = super->sector_size; |
| struct imsm_super *mpb = super->anchor; |
| size_t buf_len; |
| size_t len = 0; |
| |
| if (update->len < (int)sizeof(type)) |
| return 0; |
| |
| type = *(enum imsm_update_type *) update->buf; |
| |
| switch (type) { |
| case update_general_migration_checkpoint: |
| if (update->len < (int)sizeof(struct imsm_update_general_migration_checkpoint)) |
| return 0; |
| dprintf("called for update_general_migration_checkpoint\n"); |
| break; |
| case update_takeover: { |
| struct imsm_update_takeover *u = (void *)update->buf; |
| if (update->len < (int)sizeof(*u)) |
| return 0; |
| if (u->direction == R0_TO_R10) { |
| void **tail = (void **)&update->space_list; |
| struct imsm_dev *dev = get_imsm_dev(super, u->subarray); |
| struct imsm_map *map = get_imsm_map(dev, MAP_0); |
| int num_members = map->num_members; |
| void *space; |
| int size, i; |
| /* allocate memory for added disks */ |
| for (i = 0; i < num_members; i++) { |
| size = sizeof(struct dl); |
| space = xmalloc(size); |
| *tail = space; |
| tail = space; |
| *tail = NULL; |
| } |
| /* allocate memory for new device */ |
| size = sizeof_imsm_dev(super->devlist->dev, 0) + |
| (num_members * sizeof(__u32)); |
| space = xmalloc(size); |
| *tail = space; |
| tail = space; |
| *tail = NULL; |
| len = disks_to_mpb_size(num_members * 2); |
| } |
| |
| break; |
| } |
| case update_reshape_container_disks: { |
| /* Every raid device in the container is about to |
| * gain some more devices, and we will enter a |
| * reconfiguration. |
| * So each 'imsm_map' will be bigger, and the imsm_vol |
| * will now hold 2 of them. |
| * Thus we need new 'struct imsm_dev' allocations sized |
| * as sizeof_imsm_dev but with more devices in both maps. |
| */ |
| struct imsm_update_reshape *u = (void *)update->buf; |
| struct intel_dev *dl; |
| void **space_tail = (void**)&update->space_list; |
| |
| if (update->len < (int)sizeof(*u)) |
| return 0; |
| |
| dprintf("for update_reshape\n"); |
| |
| for (dl = super->devlist; dl; dl = dl->next) { |
| int size = sizeof_imsm_dev(dl->dev, 1); |
| void *s; |
| if (u->new_raid_disks > u->old_raid_disks) |
| size += sizeof(__u32)*2* |
| (u->new_raid_disks - u->old_raid_disks); |
| s = xmalloc(size); |
| *space_tail = s; |
| space_tail = s; |
| *space_tail = NULL; |
| } |
| |
| len = disks_to_mpb_size(u->new_raid_disks); |
| dprintf("New anchor length is %llu\n", (unsigned long long)len); |
| break; |
| } |
| case update_reshape_migration: { |
| /* for migration level 0->5 we need to add disks |
| * so the same as for container operation we will copy |
| * device to the bigger location. |
| * in memory prepared device and new disk area are prepared |
| * for usage in process update |
| */ |
| struct imsm_update_reshape_migration *u = (void *)update->buf; |
| struct intel_dev *id; |
| void **space_tail = (void **)&update->space_list; |
| int size; |
| void *s; |
| int current_level = -1; |
| |
| if (update->len < (int)sizeof(*u)) |
| return 0; |
| |
| dprintf("for update_reshape\n"); |
| |
| /* add space for bigger array in update |
| */ |
| for (id = super->devlist; id; id = id->next) { |
| if (id->index == (unsigned)u->subdev) { |
| size = sizeof_imsm_dev(id->dev, 1); |
| if (u->new_raid_disks > u->old_raid_disks) |
| size += sizeof(__u32)*2* |
| (u->new_raid_disks - u->old_raid_disks); |
| s = xmalloc(size); |
| *space_tail = s; |
| space_tail = s; |
| *space_tail = NULL; |
| break; |
| } |
| } |
| if (update->space_list == NULL) |
| break; |
| |
| /* add space for disk in update |
| */ |
| size = sizeof(struct dl); |
| s = xmalloc(size); |
| *space_tail = s; |
| space_tail = s; |
| *space_tail = NULL; |
| |
| /* add spare device to update |
| */ |
| for (id = super->devlist ; id; id = id->next) |
| if (id->index == (unsigned)u->subdev) { |
| struct imsm_dev *dev; |
| struct imsm_map *map; |
| |
| dev = get_imsm_dev(super, u->subdev); |
| map = get_imsm_map(dev, MAP_0); |
| current_level = map->raid_level; |
| break; |
| } |
| if (u->new_level == 5 && u->new_level != current_level) { |
| struct mdinfo *spares; |
| |
| spares = get_spares_for_grow(st); |
| if (spares) { |
| struct dl *dl; |
| struct mdinfo *dev; |
| |
| dev = spares->devs; |
| if (dev) { |
| u->new_disks[0] = |
| makedev(dev->disk.major, |
| dev->disk.minor); |
| dl = get_disk_super(super, |
| dev->disk.major, |
| dev->disk.minor); |
| dl->index = u->old_raid_disks; |
| dev = dev->next; |
| } |
| sysfs_free(spares); |
| } |
| } |
| len = disks_to_mpb_size(u->new_raid_disks); |
| dprintf("New anchor length is %llu\n", (unsigned long long)len); |
| break; |
| } |
| case update_size_change: { |
| if (update->len < (int)sizeof(struct imsm_update_size_change)) |
| return 0; |
| break; |
| } |
| case update_activate_spare: { |
| if (update->len < (int)sizeof(struct imsm_update_activate_spare)) |
| return 0; |
| break; |
| } |
| case update_create_array: { |
| struct imsm_update_create_array *u = (void *) update->buf; |
| struct intel_dev *dv; |
| struct imsm_dev *dev = &u->dev; |
| struct imsm_map *map = get_imsm_map(dev, MAP_0); |
| struct dl *dl; |
| struct disk_info *inf; |
| int i; |
| int activate = 0; |
| |
| if (update->len < (int)sizeof(*u)) |
| return 0; |
| |
| inf = get_disk_info(u); |
| len = sizeof_imsm_dev(dev, 1); |
| /* allocate a new super->devlist entry */ |
| dv = xmalloc(sizeof(*dv)); |
| dv->dev = xmalloc(len); |
| update->space = dv; |
| |
| /* count how many spares will be converted to members */ |
| for (i = 0; i < map->num_members; i++) { |
| dl = serial_to_dl(inf[i].serial, super); |
| if (!dl) { |
| /* hmm maybe it failed?, nothing we can do about |
| * it here |
| */ |
| continue; |
| } |
| if (count_memberships(dl, super) == 0) |
| activate++; |
| } |
| len += activate * sizeof(struct imsm_disk); |
| break; |
| } |
| case update_kill_array: { |
| if (update->len < (int)sizeof(struct imsm_update_kill_array)) |
| return 0; |
| break; |
| } |
| case update_rename_array: { |
| if (update->len < (int)sizeof(struct imsm_update_rename_array)) |
| return 0; |
| break; |
| } |
| case update_add_remove_disk: |
| /* no update->len needed */ |
| break; |
| case update_prealloc_badblocks_mem: |
| super->extra_space += sizeof(struct bbm_log) - |
| get_imsm_bbm_log_size(super->bbm_log); |
| break; |
| case update_rwh_policy: { |
| if (update->len < (int)sizeof(struct imsm_update_rwh_policy)) |
| return 0; |
| break; |
| } |
| default: |
| return 0; |
| } |
| |
| /* check if we need a larger metadata buffer */ |
| if (super->next_buf) |
| buf_len = super->next_len; |
| else |
| buf_len = super->len; |
| |
| if (__le32_to_cpu(mpb->mpb_size) + super->extra_space + len > buf_len) { |
| /* ok we need a larger buf than what is currently allocated |
| * if this allocation fails process_update will notice that |
| * ->next_len is set and ->next_buf is NULL |
| */ |
| buf_len = ROUND_UP(__le32_to_cpu(mpb->mpb_size) + |
| super->extra_space + len, sector_size); |
| if (super->next_buf) |
| free(super->next_buf); |
| |
| super->next_len = buf_len; |
| if (posix_memalign(&super->next_buf, sector_size, buf_len) == 0) |
| memset(super->next_buf, 0, buf_len); |
| else |
| super->next_buf = NULL; |
| } |
| return 1; |
| } |
| |
| /* must be called while manager is quiesced */ |
| static void imsm_delete(struct intel_super *super, struct dl **dlp, unsigned index) |
| { |
| struct imsm_super *mpb = super->anchor; |
| struct dl *iter; |
| struct imsm_dev *dev; |
| struct imsm_map *map; |
| unsigned int i, j, num_members; |
| __u32 ord, ord_map0; |
| struct bbm_log *log = super->bbm_log; |
| |
| dprintf("deleting device[%d] from imsm_super\n", index); |
| |
| /* shift all indexes down one */ |
| for (iter = super->disks; iter; iter = iter->next) |
| if (iter->index > (int)index) |
| iter->index--; |
| for (iter = super->missing; iter; iter = iter->next) |
| if (iter->index > (int)index) |
| iter->index--; |
| |
| for (i = 0; i < mpb->num_raid_devs; i++) { |
| dev = get_imsm_dev(super, i); |
| map = get_imsm_map(dev, MAP_0); |
| num_members = map->num_members; |
| for (j = 0; j < num_members; j++) { |
| /* update ord entries being careful not to propagate |
| * ord-flags to the first map |
| */ |
| ord = get_imsm_ord_tbl_ent(dev, j, MAP_X); |
| ord_map0 = get_imsm_ord_tbl_ent(dev, j, MAP_0); |
| |
| if (ord_to_idx(ord) <= index) |
| continue; |
| |
| map = get_imsm_map(dev, MAP_0); |
| set_imsm_ord_tbl_ent(map, j, ord_map0 - 1); |
| map = get_imsm_map(dev, MAP_1); |
| if (map) |
| set_imsm_ord_tbl_ent(map, j, ord - 1); |
| } |
| } |
| |
| for (i = 0; i < log->entry_count; i++) { |
| struct bbm_log_entry *entry = &log->marked_block_entries[i]; |
| |
| if (entry->disk_ordinal <= index) |
| continue; |
| entry->disk_ordinal--; |
| } |
| |
| mpb->num_disks--; |
| super->updates_pending++; |
| if (*dlp) { |
| struct dl *dl = *dlp; |
| |
| *dlp = (*dlp)->next; |
| __free_imsm_disk(dl); |
| } |
| } |
| |
| static int imsm_get_allowed_degradation(int level, int raid_disks, |
| struct intel_super *super, |
| struct imsm_dev *dev) |
| { |
| switch (level) { |
| case 1: |
| case 10:{ |
| int ret_val = 0; |
| struct imsm_map *map; |
| int i; |
| |
| ret_val = raid_disks/2; |
| /* check map if all disks pairs not failed |
| * in both maps |
| */ |
| map = get_imsm_map(dev, MAP_0); |
| for (i = 0; i < ret_val; i++) { |
| int degradation = 0; |
| if (get_imsm_disk(super, i) == NULL) |
| degradation++; |
| if (get_imsm_disk(super, i + 1) == NULL) |
| degradation++; |
| if (degradation == 2) |
| return 0; |
| } |
| map = get_imsm_map(dev, MAP_1); |
| /* if there is no second map |
| * result can be returned |
| */ |
| if (map == NULL) |
| return ret_val; |
| /* check degradation in second map |
| */ |
| for (i = 0; i < ret_val; i++) { |
| int degradation = 0; |
| if (get_imsm_disk(super, i) == NULL) |
| degradation++; |
| if (get_imsm_disk(super, i + 1) == NULL) |
| degradation++; |
| if (degradation == 2) |
| return 0; |
| } |
| return ret_val; |
| } |
| case 5: |
| return 1; |
| case 6: |
| return 2; |
| default: |
| return 0; |
| } |
| } |
| |
| /******************************************************************************* |
| * Function: validate_container_imsm |
| * Description: This routine validates container after assemble, |
| * eg. if devices in container are under the same controller. |
| * |
| * Parameters: |
| * info : linked list with info about devices used in array |
| * Returns: |
| * 1 : HBA mismatch |
| * 0 : Success |
| ******************************************************************************/ |
| int validate_container_imsm(struct mdinfo *info) |
| { |
| if (check_env("IMSM_NO_PLATFORM")) |
| return 0; |
| |
| struct sys_dev *idev; |
| struct sys_dev *hba = NULL; |
| struct sys_dev *intel_devices = find_intel_devices(); |
| char *dev_path = devt_to_devpath(makedev(info->disk.major, |
| info->disk.minor)); |
| |
| for (idev = intel_devices; idev; idev = idev->next) { |
| if (dev_path && strstr(dev_path, idev->path)) { |
| hba = idev; |
| break; |
| } |
| } |
| if (dev_path) |
| free(dev_path); |
| |
| if (!hba) { |
| pr_err("WARNING - Cannot detect HBA for device %s!\n", |
| devid2kname(makedev(info->disk.major, info->disk.minor))); |
| return 1; |
| } |
| |
| const struct imsm_orom *orom = get_orom_by_device_id(hba->dev_id); |
| struct mdinfo *dev; |
| |
| for (dev = info->next; dev; dev = dev->next) { |
| dev_path = devt_to_devpath(makedev(dev->disk.major, dev->disk.minor)); |
| |
| struct sys_dev *hba2 = NULL; |
| for (idev = intel_devices; idev; idev = idev->next) { |
| if (dev_path && strstr(dev_path, idev->path)) { |
| hba2 = idev; |
| break; |
| } |
| } |
| if (dev_path) |
| free(dev_path); |
| |
| const struct imsm_orom *orom2 = hba2 == NULL ? NULL : |
| get_orom_by_device_id(hba2->dev_id); |
| |
| if (hba2 && hba->type != hba2->type) { |
| pr_err("WARNING - HBAs of devices do not match %s != %s\n", |
| get_sys_dev_type(hba->type), get_sys_dev_type(hba2->type)); |
| return 1; |
| } |
| |
| if (orom != orom2) { |
| pr_err("WARNING - IMSM container assembled with disks under different HBAs!\n" |
| " This operation is not supported and can lead to data loss.\n"); |
| return 1; |
| } |
| |
| if (!orom) { |
| pr_err("WARNING - IMSM container assembled with disks under HBAs without IMSM platform support!\n" |
| " This operation is not supported and can lead to data loss.\n"); |
| return 1; |
| } |
| } |
| |
| return 0; |
| } |
| |
| /******************************************************************************* |
| * Function: imsm_record_badblock |
| * Description: This routine stores new bad block record in BBM log |
| * |
| * Parameters: |
| * a : array containing a bad block |
| * slot : disk number containing a bad block |
| * sector : bad block sector |
| * length : bad block sectors range |
| * Returns: |
| * 1 : Success |
| * 0 : Error |
| ******************************************************************************/ |
| static int imsm_record_badblock(struct active_array *a, int slot, |
| unsigned long long sector, int length) |
| { |
| struct intel_super *super = a->container->sb; |
| int ord; |
| int ret; |
| |
| ord = imsm_disk_slot_to_ord(a, slot); |
| if (ord < 0) |
| return 0; |
| |
| ret = record_new_badblock(super->bbm_log, ord_to_idx(ord), sector, |
| length); |
| if (ret) |
| super->updates_pending++; |
| |
| return ret; |
| } |
| /******************************************************************************* |
| * Function: imsm_clear_badblock |
| * Description: This routine clears bad block record from BBM log |
| * |
| * Parameters: |
| * a : array containing a bad block |
| * slot : disk number containing a bad block |
| * sector : bad block sector |
| * length : bad block sectors range |
| * Returns: |
| * 1 : Success |
| * 0 : Error |
| ******************************************************************************/ |
| static int imsm_clear_badblock(struct active_array *a, int slot, |
| unsigned long long sector, int length) |
| { |
| struct intel_super *super = a->container->sb; |
| int ord; |
| int ret; |
| |
| ord = imsm_disk_slot_to_ord(a, slot); |
| if (ord < 0) |
| return 0; |
| |
| ret = clear_badblock(super->bbm_log, ord_to_idx(ord), sector, length); |
| if (ret) |
| super->updates_pending++; |
| |
| return ret; |
| } |
| /******************************************************************************* |
| * Function: imsm_get_badblocks |
| * Description: This routine get list of bad blocks for an array |
| * |
| * Parameters: |
| * a : array |
| * slot : disk number |
| * Returns: |
| * bb : structure containing bad blocks |
| * NULL : error |
| ******************************************************************************/ |
| static struct md_bb *imsm_get_badblocks(struct active_array *a, int slot) |
| { |
| int inst = a->info.container_member; |
| struct intel_super *super = a->container->sb; |
| struct imsm_dev *dev = get_imsm_dev(super, inst); |
| struct imsm_map *map = get_imsm_map(dev, MAP_0); |
| int ord; |
| |
| ord = imsm_disk_slot_to_ord(a, slot); |
| if (ord < 0) |
| return NULL; |
| |
| get_volume_badblocks(super->bbm_log, ord_to_idx(ord), pba_of_lba0(map), |
| per_dev_array_size(map), &super->bb); |
| |
| return &super->bb; |
| } |
| /******************************************************************************* |
| * Function: examine_badblocks_imsm |
| * Description: Prints list of bad blocks on a disk to the standard output |
| * |
| * Parameters: |
| * st : metadata handler |
| * fd : open file descriptor for device |
| * devname : device name |
| * Returns: |
| * 0 : Success |
| * 1 : Error |
| ******************************************************************************/ |
| static int examine_badblocks_imsm(struct supertype *st, int fd, char *devname) |
| { |
| struct intel_super *super = st->sb; |
| struct bbm_log *log = super->bbm_log; |
| struct dl *d = NULL; |
| int any = 0; |
| |
| for (d = super->disks; d ; d = d->next) { |
| if (strcmp(d->devname, devname) == 0) |
| break; |
| } |
| |
| if ((d == NULL) || (d->index < 0)) { /* serial mismatch probably */ |
| pr_err("%s doesn't appear to be part of a raid array\n", |
| devname); |
| return 1; |
| } |
| |
| if (log != NULL) { |
| unsigned int i; |
| struct bbm_log_entry *entry = &log->marked_block_entries[0]; |
| |
| for (i = 0; i < log->entry_count; i++) { |
| if (entry[i].disk_ordinal == d->index) { |
| unsigned long long sector = __le48_to_cpu( |
| &entry[i].defective_block_start); |
| int cnt = entry[i].marked_count + 1; |
| |
| if (!any) { |
| printf("Bad-blocks on %s:\n", devname); |
| any = 1; |
| } |
| |
| printf("%20llu for %d sectors\n", sector, cnt); |
| } |
| } |
| } |
| |
| if (!any) |
| printf("No bad-blocks list configured on %s\n", devname); |
| |
| return 0; |
| } |
| /******************************************************************************* |
| * Function: init_migr_record_imsm |
| * Description: Function inits imsm migration record |
| * Parameters: |
| * super : imsm internal array info |
| * dev : device under migration |
| * info : general array info to find the smallest device |
| * Returns: |
| * none |
| ******************************************************************************/ |
| void init_migr_record_imsm(struct supertype *st, struct imsm_dev *dev, |
| struct mdinfo *info) |
| { |
| struct intel_super *super = st->sb; |
| struct migr_record *migr_rec = super->migr_rec; |
| int new_data_disks; |
| unsigned long long dsize, dev_sectors; |
| long long unsigned min_dev_sectors = -1LLU; |
| struct imsm_map *map_dest = get_imsm_map(dev, MAP_0); |
| struct imsm_map *map_src = get_imsm_map(dev, MAP_1); |
| unsigned long long num_migr_units; |
| unsigned long long array_blocks; |
| struct dl *dl_disk = NULL; |
| |
| memset(migr_rec, 0, sizeof(struct migr_record)); |
| migr_rec->family_num = __cpu_to_le32(super->anchor->family_num); |
| |
| /* only ascending reshape supported now */ |
| migr_rec->ascending_migr = __cpu_to_le32(1); |
| |
| migr_rec->dest_depth_per_unit = GEN_MIGR_AREA_SIZE / |
| max(map_dest->blocks_per_strip, map_src->blocks_per_strip); |
| migr_rec->dest_depth_per_unit *= |
| max(map_dest->blocks_per_strip, map_src->blocks_per_strip); |
| new_data_disks = imsm_num_data_members(map_dest); |
| migr_rec->blocks_per_unit = |
| __cpu_to_le32(migr_rec->dest_depth_per_unit * new_data_disks); |
| migr_rec->dest_depth_per_unit = |
| __cpu_to_le32(migr_rec->dest_depth_per_unit); |
| array_blocks = info->component_size * new_data_disks; |
| num_migr_units = |
| array_blocks / __le32_to_cpu(migr_rec->blocks_per_unit); |
| |
| if (array_blocks % __le32_to_cpu(migr_rec->blocks_per_unit)) |
| num_migr_units++; |
| set_num_migr_units(migr_rec, num_migr_units); |
| |
| migr_rec->post_migr_vol_cap = dev->size_low; |
| migr_rec->post_migr_vol_cap_hi = dev->size_high; |
| |
| /* Find the smallest dev */ |
| for (dl_disk = super->disks; dl_disk ; dl_disk = dl_disk->next) { |
| /* ignore spares in container */ |
| if (dl_disk->index < 0) |
| continue; |
| get_dev_size(dl_disk->fd, NULL, &dsize); |
| dev_sectors = dsize / 512; |
| if (dev_sectors < min_dev_sectors) |
| min_dev_sectors = dev_sectors; |
| } |
| set_migr_chkp_area_pba(migr_rec, min_dev_sectors - |
| RAID_DISK_RESERVED_BLOCKS_IMSM_HI); |
| |
| write_imsm_migr_rec(st); |
| |
| return; |
| } |
| |
| /******************************************************************************* |
| * Function: save_backup_imsm |
| * Description: Function saves critical data stripes to Migration Copy Area |
| * and updates the current migration unit status. |
| * Use restore_stripes() to form a destination stripe, |
| * and to write it to the Copy Area. |
| * Parameters: |
| * st : supertype information |
| * dev : imsm device that backup is saved for |
| * info : general array info |
| * buf : input buffer |
| * length : length of data to backup (blocks_per_unit) |
| * Returns: |
| * 0 : success |
| *, -1 : fail |
| ******************************************************************************/ |
| int save_backup_imsm(struct supertype *st, |
| struct imsm_dev *dev, |
| struct mdinfo *info, |
| void *buf, |
| int length) |
| { |
| int rv = -1; |
| struct intel_super *super = st->sb; |
| unsigned long long *target_offsets; |
| int *targets; |
| int i; |
| struct imsm_map *map_dest = get_imsm_map(dev, MAP_0); |
| int new_disks = map_dest->num_members; |
| int dest_layout = 0; |
| int dest_chunk; |
| unsigned long long start; |
| int data_disks = imsm_num_data_members(map_dest); |
| |
| targets = xmalloc(new_disks * sizeof(int)); |
| |
| for (i = 0; i < new_disks; i++) { |
| struct dl *dl_disk = get_imsm_dl_disk(super, i); |
| |
| targets[i] = dl_disk->fd; |
| } |
| |
| target_offsets = xcalloc(new_disks, sizeof(unsigned long long)); |
| |
| start = info->reshape_progress * 512; |
| for (i = 0; i < new_disks; i++) { |
| target_offsets[i] = migr_chkp_area_pba(super->migr_rec) * 512; |
| /* move back copy area adderss, it will be moved forward |
| * in restore_stripes() using start input variable |
| */ |
| target_offsets[i] -= start/data_disks; |
| } |
| |
| dest_layout = imsm_level_to_layout(map_dest->raid_level); |
| dest_chunk = __le16_to_cpu(map_dest->blocks_per_strip) * 512; |
| |
| if (restore_stripes(targets, /* list of dest devices */ |
| target_offsets, /* migration record offsets */ |
| new_disks, |
| dest_chunk, |
| map_dest->raid_level, |
| dest_layout, |
| -1, /* source backup file descriptor */ |
| 0, /* input buf offset |
| * always 0 buf is already offseted */ |
| start, |
| length, |
| buf) != 0) { |
| pr_err("Error restoring stripes\n"); |
| goto abort; |
| } |
| |
| rv = 0; |
| |
| abort: |
| if (targets) { |
| free(targets); |
| } |
| free(target_offsets); |
| |
| return rv; |
| } |
| |
| /******************************************************************************* |
| * Function: save_checkpoint_imsm |
| * Description: Function called for current unit status update |
| * in the migration record. It writes it to disk. |
| * Parameters: |
| * super : imsm internal array info |
| * info : general array info |
| * Returns: |
| * 0: success |
| * 1: failure |
| * 2: failure, means no valid migration record |
| * / no general migration in progress / |
| ******************************************************************************/ |
| int save_checkpoint_imsm(struct supertype *st, struct mdinfo *info, int state) |
| { |
| struct intel_super *super = st->sb; |
| unsigned long long blocks_per_unit; |
| unsigned long long curr_migr_unit; |
| |
| if (load_imsm_migr_rec(super) != 0) { |
| dprintf("imsm: ERROR: Cannot read migration record for checkpoint save.\n"); |
| return 1; |
| } |
| |
| blocks_per_unit = __le32_to_cpu(super->migr_rec->blocks_per_unit); |
| if (blocks_per_unit == 0) { |
| dprintf("imsm: no migration in progress.\n"); |
| return 2; |
| } |
| curr_migr_unit = info->reshape_progress / blocks_per_unit; |
| /* check if array is alligned to copy area |
| * if it is not alligned, add one to current migration unit value |
| * this can happend on array reshape finish only |
| */ |
| if (info->reshape_progress % blocks_per_unit) |
| curr_migr_unit++; |
| |
| set_current_migr_unit(super->migr_rec, curr_migr_unit); |
| super->migr_rec->rec_status = __cpu_to_le32(state); |
| set_migr_dest_1st_member_lba(super->migr_rec, |
| super->migr_rec->dest_depth_per_unit * curr_migr_unit); |
| |
| if (write_imsm_migr_rec(st) < 0) { |
| dprintf("imsm: Cannot write migration record outside backup area\n"); |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| /******************************************************************************* |
| * Function: recover_backup_imsm |
| * Description: Function recovers critical data from the Migration Copy Area |
| * while assembling an array. |
| * Parameters: |
| * super : imsm internal array info |
| * info : general array info |
| * Returns: |
| * 0 : success (or there is no data to recover) |
| * 1 : fail |
| ******************************************************************************/ |
| int recover_backup_imsm(struct supertype *st, struct mdinfo *info) |
| { |
| struct intel_super *super = st->sb; |
| struct migr_record *migr_rec = super->migr_rec; |
| struct imsm_map *map_dest; |
| struct intel_dev *id = NULL; |
| unsigned long long read_offset; |
| unsigned long long write_offset; |
| unsigned unit_len; |
| int new_disks, err; |
| char *buf = NULL; |
| int retval = 1; |
| unsigned int sector_size = super->sector_size; |
| unsigned long long curr_migr_unit = current_migr_unit(migr_rec); |
| unsigned long long num_migr_units = get_num_migr_units(migr_rec); |
| char buffer[20]; |
| int skipped_disks = 0; |
| struct dl *dl_disk; |
| |
| err = sysfs_get_str(info, NULL, "array_state", (char *)buffer, 20); |
| if (err < 1) |
| return 1; |
| |
| /* recover data only during assemblation */ |
| if (strncmp(buffer, "inactive", 8) != 0) |
| return 0; |
| /* no data to recover */ |
| if (__le32_to_cpu(migr_rec->rec_status) == UNIT_SRC_NORMAL) |
| return 0; |
| if (curr_migr_unit >= num_migr_units) |
| return 1; |
| |
| /* find device during reshape */ |
| for (id = super->devlist; id; id = id->next) |
| if (is_gen_migration(id->dev)) |
| break; |
| if (id == NULL) |
| return 1; |
| |
| map_dest = get_imsm_map(id->dev, MAP_0); |
| new_disks = map_dest->num_members; |
| |
| read_offset = migr_chkp_area_pba(migr_rec) * 512; |
| |
| write_offset = (migr_dest_1st_member_lba(migr_rec) + |
| pba_of_lba0(map_dest)) * 512; |
| |
| unit_len = __le32_to_cpu(migr_rec->dest_depth_per_unit) * 512; |
| if (posix_memalign((void **)&buf, sector_size, unit_len) != 0) |
| goto abort; |
| |
| for (dl_disk = super->disks; dl_disk; dl_disk = dl_disk->next) { |
| if (dl_disk->index < 0) |
| continue; |
| |
| if (dl_disk->fd < 0) { |
| skipped_disks++; |
| continue; |
| } |
| if (lseek64(dl_disk->fd, read_offset, SEEK_SET) < 0) { |
| pr_err("Cannot seek to block: %s\n", |
| strerror(errno)); |
| skipped_disks++; |
| continue; |
| } |
| if (read(dl_disk->fd, buf, unit_len) != unit_len) { |
| pr_err("Cannot read copy area block: %s\n", |
| strerror(errno)); |
| skipped_disks++; |
| continue; |
| } |
| if (lseek64(dl_disk->fd, write_offset, SEEK_SET) < 0) { |
| pr_err("Cannot seek to block: %s\n", |
| strerror(errno)); |
| skipped_disks++; |
| continue; |
| } |
| if (write(dl_disk->fd, buf, unit_len) != unit_len) { |
| pr_err("Cannot restore block: %s\n", |
| strerror(errno)); |
| skipped_disks++; |
| continue; |
| } |
| } |
| |
| if (skipped_disks > imsm_get_allowed_degradation(info->new_level, |
| new_disks, |
| super, |
| id->dev)) { |
| pr_err("Cannot restore data from backup. Too many failed disks\n"); |
| goto abort; |
| } |
| |
| if (save_checkpoint_imsm(st, info, UNIT_SRC_NORMAL)) { |
| /* ignore error == 2, this can mean end of reshape here |
| */ |
| dprintf("imsm: Cannot write checkpoint to migration record (UNIT_SRC_NORMAL) during restart\n"); |
| } else |
| retval = 0; |
| |
| abort: |
| free(buf); |
| return retval; |
| } |
| |
| static char disk_by_path[] = "/dev/disk/by-path/"; |
| |
| static const char *imsm_get_disk_controller_domain(const char *path) |
| { |
| char disk_path[PATH_MAX]; |
| char *drv=NULL; |
| struct stat st; |
| |
| strcpy(disk_path, disk_by_path); |
| strncat(disk_path, path, PATH_MAX - strlen(disk_path) - 1); |
| if (stat(disk_path, &st) == 0) { |
| struct sys_dev* hba; |
| char *path; |
| |
| path = devt_to_devpath(st.st_rdev); |
| if (path == NULL) |
| return "unknown"; |
| hba = find_disk_attached_hba(-1, path); |
| if (hba && hba->type == SYS_DEV_SAS) |
| drv = "isci"; |
| else if (hba && hba->type == SYS_DEV_SATA) |
| drv = "ahci"; |
| else if (hba && hba->type == SYS_DEV_VMD) |
| drv = "vmd"; |
| else if (hba && hba->type == SYS_DEV_NVME) |
| drv = "nvme"; |
| else |
| drv = "unknown"; |
| dprintf("path: %s hba: %s attached: %s\n", |
| path, (hba) ? hba->path : "NULL", drv); |
| free(path); |
| } |
| return drv; |
| } |
| |
| static char *imsm_find_array_devnm_by_subdev(int subdev, char *container) |
| { |
| static char devnm[32]; |
| char subdev_name[20]; |
| struct mdstat_ent *mdstat; |
| |
| sprintf(subdev_name, "%d", subdev); |
| mdstat = mdstat_by_subdev(subdev_name, container); |
| if (!mdstat) |
| return NULL; |
| |
| strcpy(devnm, mdstat->devnm); |
| free_mdstat(mdstat); |
| return devnm; |
| } |
| |
| static int imsm_reshape_is_allowed_on_container(struct supertype *st, |
| struct geo_params *geo, |
| int *old_raid_disks, |
| int direction) |
| { |
| /* currently we only support increasing the number of devices |
| * for a container. This increases the number of device for each |
| * member array. They must all be RAID0 or RAID5. |
| */ |
| int ret_val = 0; |
| struct mdinfo *info, *member; |
| int devices_that_can_grow = 0; |
| |
| dprintf("imsm: imsm_reshape_is_allowed_on_container(ENTER): st->devnm = (%s)\n", st->devnm); |
| |
| if (geo->size > 0 || |
| geo->level != UnSet || |
| geo->layout != UnSet || |
| geo->chunksize != 0 || |
| geo->raid_disks == UnSet) { |
| dprintf("imsm: Container operation is allowed for raid disks number change only.\n"); |
| return ret_val; |
| } |
| |
| if (direction == ROLLBACK_METADATA_CHANGES) { |
| dprintf("imsm: Metadata changes rollback is not supported for container operation.\n"); |
| return ret_val; |
| } |
| |
| info = container_content_imsm(st, NULL); |
| for (member = info; member; member = member->next) { |
| char *result; |
| |
| dprintf("imsm: checking device_num: %i\n", |
| member->container_member); |
| |
| if (geo->raid_disks <= member->array.raid_disks) { |
| /* we work on container for Online Capacity Expansion |
| * only so raid_disks has to grow |
| */ |
| dprintf("imsm: for container operation raid disks increase is required\n"); |
| break; |
| } |
| |
| if (info->array.level != 0 && info->array.level != 5) { |
| /* we cannot use this container with other raid level |
| */ |
| dprintf("imsm: for container operation wrong raid level (%i) detected\n", |
| info->array.level); |
| break; |
| } else { |
| /* check for platform support |
| * for this raid level configuration |
| */ |
| struct intel_super *super = st->sb; |
| if (!is_raid_level_supported(super->orom, |
| member->array.level, |
| geo->raid_disks)) { |
| dprintf("platform does not support raid%d with %d disk%s\n", |
| info->array.level, |
| geo->raid_disks, |
| geo->raid_disks > 1 ? "s" : ""); |
| break; |
| } |
| /* check if component size is aligned to chunk size |
| */ |
| if (info->component_size % |
| (info->array.chunk_size/512)) { |
| dprintf("Component size is not aligned to chunk size\n"); |
| break; |
| } |
| } |
| |
| if (*old_raid_disks && |
| info->array.raid_disks != *old_raid_disks) |
| break; |
| *old_raid_disks = info->array.raid_disks; |
| |
| /* All raid5 and raid0 volumes in container |
| * have to be ready for Online Capacity Expansion |
| * so they need to be assembled. We have already |
| * checked that no recovery etc is happening. |
| */ |
| result = imsm_find_array_devnm_by_subdev(member->container_member, |
| st->container_devnm); |
| if (result == NULL) { |
| dprintf("imsm: cannot find array\n"); |
| break; |
| } |
| devices_that_can_grow++; |
| } |
| sysfs_free(info); |
| if (!member && devices_that_can_grow) |
| ret_val = 1; |
| |
| if (ret_val) |
| dprintf("Container operation allowed\n"); |
| else |
| dprintf("Error: %i\n", ret_val); |
| |
| return ret_val; |
| } |
| |
| /* Function: get_spares_for_grow |
| * Description: Allocates memory and creates list of spare devices |
| * avaliable in container. Checks if spare drive size is acceptable. |
| * Parameters: Pointer to the supertype structure |
| * Returns: Pointer to the list of spare devices (mdinfo structure) on success, |
| * NULL if fail |
| */ |
| static struct mdinfo *get_spares_for_grow(struct supertype *st) |
| { |
| struct spare_criteria sc; |
| |
| get_spare_criteria_imsm(st, &sc); |
| return container_choose_spares(st, &sc, NULL, NULL, NULL, 0); |
| } |
| |
| /****************************************************************************** |
| * function: imsm_create_metadata_update_for_reshape |
| * Function creates update for whole IMSM container. |
| * |
| ******************************************************************************/ |
| static int imsm_create_metadata_update_for_reshape( |
| struct supertype *st, |
| struct geo_params *geo, |
| int old_raid_disks, |
| struct imsm_update_reshape **updatep) |
| { |
| struct intel_super *super = st->sb; |
| struct imsm_super *mpb = super->anchor; |
| int update_memory_size; |
| struct imsm_update_reshape *u; |
| struct mdinfo *spares; |
| int i; |
| int delta_disks; |
| struct mdinfo *dev; |
| |
| dprintf("(enter) raid_disks = %i\n", geo->raid_disks); |
| |
| delta_disks = geo->raid_disks - old_raid_disks; |
| |
| /* size of all update data without anchor */ |
| update_memory_size = sizeof(struct imsm_update_reshape); |
| |
| /* now add space for spare disks that we need to add. */ |
| update_memory_size += sizeof(u->new_disks[0]) * (delta_disks - 1); |
| |
| u = xcalloc(1, update_memory_size); |
| u->type = update_reshape_container_disks; |
| u->old_raid_disks = old_raid_disks; |
| u->new_raid_disks = geo->raid_disks; |
| |
| /* now get spare disks list |
| */ |
| spares = get_spares_for_grow(st); |
| |
| if (spares == NULL || delta_disks > spares->array.spare_disks) { |
| pr_err("imsm: ERROR: Cannot get spare devices for %s.\n", geo->dev_name); |
| i = -1; |
| goto abort; |
| } |
| |
| /* we have got spares |
| * update disk list in imsm_disk list table in anchor |
| */ |
| dprintf("imsm: %i spares are available.\n\n", |
| spares->array.spare_disks); |
| |
| dev = spares->devs; |
| for (i = 0; i < delta_disks; i++) { |
| struct dl *dl; |
| |
| if (dev == NULL) |
| break; |
| u->new_disks[i] = makedev(dev->disk.major, |
| dev->disk.minor); |
| dl = get_disk_super(super, dev->disk.major, dev->disk.minor); |
| dl->index = mpb->num_disks; |
| mpb->num_disks++; |
| dev = dev->next; |
| } |
| |
| abort: |
| /* free spares |
| */ |
| sysfs_free(spares); |
| |
| dprintf("imsm: reshape update preparation :"); |
| if (i == delta_disks) { |
| dprintf_cont(" OK\n"); |
| *updatep = u; |
| return update_memory_size; |
| } |
| free(u); |
| dprintf_cont(" Error\n"); |
| |
| return 0; |
| } |
| |
| /****************************************************************************** |
| * function: imsm_create_metadata_update_for_size_change() |
| * Creates update for IMSM array for array size change. |
| * |
| ******************************************************************************/ |
| static int imsm_create_metadata_update_for_size_change( |
| struct supertype *st, |
| struct geo_params *geo, |
| struct imsm_update_size_change **updatep) |
| { |
| struct intel_super *super = st->sb; |
| int update_memory_size; |
| struct imsm_update_size_change *u; |
| |
| dprintf("(enter) New size = %llu\n", geo->size); |
| |
| /* size of all update data without anchor */ |
| update_memory_size = sizeof(struct imsm_update_size_change); |
| |
| u = xcalloc(1, update_memory_size); |
| u->type = update_size_change; |
| u->subdev = super->current_vol; |
| u->new_size = geo->size; |
| |
| dprintf("imsm: reshape update preparation : OK\n"); |
| *updatep = u; |
| |
| return update_memory_size; |
| } |
| |
| /****************************************************************************** |
| * function: imsm_create_metadata_update_for_migration() |
| * Creates update for IMSM array. |
| * |
| ******************************************************************************/ |
| static int imsm_create_metadata_update_for_migration( |
| struct supertype *st, |
| struct geo_params *geo, |
| struct imsm_update_reshape_migration **updatep) |
| { |
| struct intel_super *super = st->sb; |
| int update_memory_size; |
| struct imsm_update_reshape_migration *u; |
| struct imsm_dev *dev; |
| int previous_level = -1; |
| |
| dprintf("(enter) New Level = %i\n", geo->level); |
| |
| /* size of all update data without anchor */ |
| update_memory_size = sizeof(struct imsm_update_reshape_migration); |
| |
| u = xcalloc(1, update_memory_size); |
| u->type = update_reshape_migration; |
| u->subdev = super->current_vol; |
| u->new_level = geo->level; |
| u->new_layout = geo->layout; |
| u->new_raid_disks = u->old_raid_disks = geo->raid_disks; |
| u->new_disks[0] = -1; |
| u->new_chunksize = -1; |
| |
| dev = get_imsm_dev(super, u->subdev); |
| if (dev) { |
| struct imsm_map *map; |
| |
| map = get_imsm_map(dev, MAP_0); |
| if (map) { |
| int current_chunk_size = |
| __le16_to_cpu(map->blocks_per_strip) / 2; |
| |
| if (geo->chunksize != current_chunk_size) { |
| u->new_chunksize = geo->chunksize / 1024; |
| dprintf("imsm: chunk size change from %i to %i\n", |
| current_chunk_size, u->new_chunksize); |
| } |
| previous_level = map->raid_level; |
| } |
| } |
| if (geo->level == 5 && previous_level == 0) { |
| struct mdinfo *spares = NULL; |
| |
| u->new_raid_disks++; |
| spares = get_spares_for_grow(st); |
| if (spares == NULL || spares->array.spare_disks < 1) { |
| free(u); |
| sysfs_free(spares); |
| update_memory_size = 0; |
| pr_err("cannot get spare device for requested migration\n"); |
| return 0; |
| } |
| sysfs_free(spares); |
| } |
| dprintf("imsm: reshape update preparation : OK\n"); |
| *updatep = u; |
| |
| return update_memory_size; |
| } |
| |
| static void imsm_update_metadata_locally(struct supertype *st, |
| void *buf, int len) |
| { |
| struct metadata_update mu; |
| |
| mu.buf = buf; |
| mu.len = len; |
| mu.space = NULL; |
| mu.space_list = NULL; |
| mu.next = NULL; |
| if (imsm_prepare_update(st, &mu)) |
| imsm_process_update(st, &mu); |
| |
| while (mu.space_list) { |
| void **space = mu.space_list; |
| mu.space_list = *space; |
| free(space); |
| } |
| } |
| |
| /*************************************************************************** |
| * Function: imsm_analyze_change |
| * Description: Function analyze change for single volume |
| * and validate if transition is supported |
| * Parameters: Geometry parameters, supertype structure, |
| * metadata change direction (apply/rollback) |
| * Returns: Operation type code on success, -1 if fail |
| ****************************************************************************/ |
| enum imsm_reshape_type imsm_analyze_change(struct supertype *st, |
| struct geo_params *geo, |
| int direction) |
| { |
| struct mdinfo info; |
| int change = -1; |
| int check_devs = 0; |
| int chunk; |
| /* number of added/removed disks in operation result */ |
| int devNumChange = 0; |
| /* imsm compatible layout value for array geometry verification */ |
| int imsm_layout = -1; |
| int data_disks; |
| struct imsm_dev *dev; |
| struct imsm_map *map; |
| struct intel_super *super; |
| unsigned long long current_size; |
| unsigned long long free_size; |
| unsigned long long max_size; |
| int rv; |
| |
| getinfo_super_imsm_volume(st, &info, NULL); |
| if (geo->level != info.array.level && geo->level >= 0 && |
| geo->level != UnSet) { |
| switch (info.array.level) { |
| case 0: |
| if (geo->level == 5) { |
| change = CH_MIGRATION; |
| if (geo->layout != ALGORITHM_LEFT_ASYMMETRIC) { |
| pr_err("Error. Requested Layout not supported (left-asymmetric layout is supported only)!\n"); |
| change = -1; |
| goto analyse_change_exit; |
| } |
| imsm_layout = geo->layout; |
| check_devs = 1; |
| devNumChange = 1; /* parity disk added */ |
| } else if (geo->level == 10) { |
| change = CH_TAKEOVER; |
| check_devs = 1; |
| devNumChange = 2; /* two mirrors added */ |
| imsm_layout = 0x102; /* imsm supported layout */ |
| } |
| break; |
| case 1: |
| case 10: |
| if (geo->level == 0) { |
| change = CH_TAKEOVER; |
| check_devs = 1; |
| devNumChange = -(geo->raid_disks/2); |
| imsm_layout = 0; /* imsm raid0 layout */ |
| } |
| break; |
| } |
| if (change == -1) { |
| pr_err("Error. Level Migration from %d to %d not supported!\n", |
| info.array.level, geo->level); |
| goto analyse_change_exit; |
| } |
| } else |
| geo->level = info.array.level; |
| |
| if (geo->layout != info.array.layout && |
| (geo->layout != UnSet && geo->layout != -1)) { |
| change = CH_MIGRATION; |
| if (info.array.layout == 0 && info.array.level == 5 && |
| geo->layout == 5) { |
| /* reshape 5 -> 4 */ |
| } else if (info.array.layout == 5 && info.array.level == 5 && |
| geo->layout == 0) { |
| /* reshape 4 -> 5 */ |
| geo->layout = 0; |
| geo->level = 5; |
| } else { |
| pr_err("Error. Layout Migration from %d to %d not supported!\n", |
| info.array.layout, geo->layout); |
| change = -1; |
| goto analyse_change_exit; |
| } |
| } else { |
| geo->layout = info.array.layout; |
| if (imsm_layout == -1) |
| imsm_layout = info.array.layout; |
| } |
| |
| if (geo->chunksize > 0 && geo->chunksize != UnSet && |
| geo->chunksize != info.array.chunk_size) { |
| if (info.array.level == 10) { |
| pr_err("Error. Chunk size change for RAID 10 is not supported.\n"); |
| change = -1; |
| goto analyse_change_exit; |
| } else if (info.component_size % (geo->chunksize/512)) { |
| pr_err("New chunk size (%dK) does not evenly divide device size (%lluk). Aborting...\n", |
| geo->chunksize/1024, info.component_size/2); |
| change = -1; |
| goto analyse_change_exit; |
| } |
| change = CH_MIGRATION; |
| } else { |
| geo->chunksize = info.array.chunk_size; |
| } |
| |
| chunk = geo->chunksize / 1024; |
| |
| super = st->sb; |
| dev = get_imsm_dev(super, super->current_vol); |
| map = get_imsm_map(dev, MAP_0); |
| data_disks = imsm_num_data_members(map); |
| /* compute current size per disk member |
| */ |
| current_size = info.custom_array_size / data_disks; |
| |
| if (geo->size > 0 && geo->size != MAX_SIZE) { |
| /* align component size |
| */ |
| geo->size = imsm_component_size_alignment_check( |
| get_imsm_raid_level(dev->vol.map), |
| chunk * 1024, super->sector_size, |
| geo->size * 2); |
| if (geo->size == 0) { |
| pr_err("Error. Size expansion is supported only (current size is %llu, requested size /rounded/ is 0).\n", |
| current_size); |
| goto analyse_change_exit; |
| } |
| } |
| |
| if (current_size != geo->size && geo->size > 0) { |
| if (change != -1) { |
| pr_err("Error. Size change should be the only one at a time.\n"); |
| change = -1; |
| goto analyse_change_exit; |
| } |
| if ((super->current_vol + 1) != super->anchor->num_raid_devs) { |
| pr_err("Error. The last volume in container can be expanded only (%i/%s).\n", |
| super->current_vol, st->devnm); |
| goto analyse_change_exit; |
| } |
| /* check the maximum available size |
| */ |
| rv = imsm_get_free_size(st, dev->vol.map->num_members, |
| 0, chunk, &free_size); |
| if (rv == 0) |
| /* Cannot find maximum available space |
| */ |
| max_size = 0; |
| else { |
| max_size = free_size + current_size; |
| /* align component size |
| */ |
| max_size = imsm_component_size_alignment_check( |
| get_imsm_raid_level(dev->vol.map), |
| chunk * 1024, super->sector_size, |
| max_size); |
| } |
| if (geo->size == MAX_SIZE) { |
| /* requested size change to the maximum available size |
| */ |
| if (max_size == 0) { |
| pr_err("Error. Cannot find maximum available space.\n"); |
| change = -1; |
| goto analyse_change_exit; |
| } else |
| geo->size = max_size; |
| } |
| |
| if (direction == ROLLBACK_METADATA_CHANGES) { |
| /* accept size for rollback only |
| */ |
| } else { |
| /* round size due to metadata compatibility |
| */ |
| geo->size = (geo->size >> SECT_PER_MB_SHIFT) |
| << SECT_PER_MB_SHIFT; |
| dprintf("Prepare update for size change to %llu\n", |
| geo->size ); |
| if (current_size >= geo->size) { |
| pr_err("Error. Size expansion is supported only (current size is %llu, requested size /rounded/ is %llu).\n", |
| current_size, geo->size); |
| goto analyse_change_exit; |
| } |
| if (max_size && geo->size > max_size) { |
| pr_err("Error. Requested size is larger than maximum available size (maximum available size is %llu, requested size /rounded/ is %llu).\n", |
| max_size, geo->size); |
| goto analyse_change_exit; |
| } |
| } |
| geo->size *= data_disks; |
| geo->raid_disks = dev->vol.map->num_members; |
| change = CH_ARRAY_SIZE; |
| } |
| if (!validate_geometry_imsm(st, |
| geo->level, |
| imsm_layout, |
| geo->raid_disks + devNumChange, |
| &chunk, |
| geo->size, INVALID_SECTORS, |
| 0, 0, info.consistency_policy, 1)) |
| change = -1; |
| |
| if (check_devs) { |
| struct intel_super *super = st->sb; |
| struct imsm_super *mpb = super->anchor; |
| |
| if (mpb->num_raid_devs > 1) { |
| pr_err("Error. Cannot perform operation on %s- for this operation it MUST be single array in container\n", |
| geo->dev_name); |
| change = -1; |
| } |
| } |
| |
| analyse_change_exit: |
| if (direction == ROLLBACK_METADATA_CHANGES && |
| (change == CH_MIGRATION || change == CH_TAKEOVER)) { |
| dprintf("imsm: Metadata changes rollback is not supported for migration and takeover operations.\n"); |
| change = -1; |
| } |
| return change; |
| } |
| |
| int imsm_takeover(struct supertype *st, struct geo_params *geo) |
| { |
| struct intel_super *super = st->sb; |
| struct imsm_update_takeover *u; |
| |
| u = xmalloc(sizeof(struct imsm_update_takeover)); |
| |
| u->type = update_takeover; |
| u->subarray = super->current_vol; |
| |
| /* 10->0 transition */ |
| if (geo->level == 0) |
| u->direction = R10_TO_R0; |
| |
| /* 0->10 transition */ |
| if (geo->level == 10) |
| u->direction = R0_TO_R10; |
| |
| /* update metadata locally */ |
| imsm_update_metadata_locally(st, u, |
| sizeof(struct imsm_update_takeover)); |
| /* and possibly remotely */ |
| if (st->update_tail) |
| append_metadata_update(st, u, |
| sizeof(struct imsm_update_takeover)); |
| else |
| free(u); |
| |
| return 0; |
| } |
| |
| /* Flush size update if size calculated by num_data_stripes is higher than |
| * imsm_dev_size to eliminate differences during reshape. |
| * Mdmon will recalculate them correctly. |
| * If subarray index is not set then check whole container. |
| * Returns: |
| * 0 - no error occurred |
| * 1 - error detected |
| */ |
| static int imsm_fix_size_mismatch(struct supertype *st, int subarray_index) |
| { |
| struct intel_super *super = st->sb; |
| int tmp = super->current_vol; |
| int ret_val = 1; |
| int i; |
| |
| for (i = 0; i < super->anchor->num_raid_devs; i++) { |
| if (subarray_index >= 0 && i != subarray_index) |
| continue; |
| super->current_vol = i; |
| struct imsm_dev *dev = get_imsm_dev(super, super->current_vol); |
| struct imsm_map *map = get_imsm_map(dev, MAP_0); |
| unsigned int disc_count = imsm_num_data_members(map); |
| struct geo_params geo; |
| struct imsm_update_size_change *update; |
| unsigned long long calc_size = per_dev_array_size(map) * disc_count; |
| unsigned long long d_size = imsm_dev_size(dev); |
| int u_size; |
| |
| if (calc_size == d_size || dev->vol.migr_type == MIGR_GEN_MIGR) |
| continue; |
| |
| /* There is a difference, verify that imsm_dev_size is |
| * rounded correctly and push update. |
| */ |
| if (d_size != round_size_to_mb(d_size, disc_count)) { |
| dprintf("imsm: Size of volume %d is not rounded correctly\n", |
| i); |
| goto exit; |
| } |
| memset(&geo, 0, sizeof(struct geo_params)); |
| geo.size = d_size; |
| u_size = imsm_create_metadata_update_for_size_change(st, &geo, |
| &update); |
| if (u_size < 1) { |
| dprintf("imsm: Cannot prepare size change update\n"); |
| goto exit; |
| } |
| imsm_update_metadata_locally(st, update, u_size); |
| if (st->update_tail) { |
| append_metadata_update(st, update, u_size); |
| flush_metadata_updates(st); |
| st->update_tail = &st->updates; |
| } else { |
| imsm_sync_metadata(st); |
| } |
| } |
| ret_val = 0; |
| exit: |
| super->current_vol = tmp; |
| return ret_val; |
| } |
| |
| static int imsm_reshape_super(struct supertype *st, unsigned long long size, |
| int level, |
| int layout, int chunksize, int raid_disks, |
| int delta_disks, char *backup, char *dev, |
| int direction, int verbose) |
| { |
| int ret_val = 1; |
| struct geo_params geo; |
| |
| dprintf("(enter)\n"); |
| |
| memset(&geo, 0, sizeof(struct geo_params)); |
| |
| geo.dev_name = dev; |
| strcpy(geo.devnm, st->devnm); |
| geo.size = size; |
| geo.level = level; |
| geo.layout = layout; |
| geo.chunksize = chunksize; |
| geo.raid_disks = raid_disks; |
| if (delta_disks != UnSet) |
| geo.raid_disks += delta_disks; |
| |
| dprintf("for level : %i\n", geo.level); |
| dprintf("for raid_disks : %i\n", geo.raid_disks); |
| |
| if (strcmp(st->container_devnm, st->devnm) == 0) { |
| /* On container level we can only increase number of devices. */ |
| dprintf("imsm: info: Container operation\n"); |
| int old_raid_disks = 0; |
| |
| if (imsm_reshape_is_allowed_on_container( |
| st, &geo, &old_raid_disks, direction)) { |
| struct imsm_update_reshape *u = NULL; |
| int len; |
| |
| if (imsm_fix_size_mismatch(st, -1)) { |
| dprintf("imsm: Cannot fix size mismatch\n"); |
| goto exit_imsm_reshape_super; |
| } |
| |
| len = imsm_create_metadata_update_for_reshape( |
| st, &geo, old_raid_disks, &u); |
| |
| if (len <= 0) { |
| dprintf("imsm: Cannot prepare update\n"); |
| goto exit_imsm_reshape_super; |
| } |
| |
| ret_val = 0; |
| /* update metadata locally */ |
| imsm_update_metadata_locally(st, u, len); |
| /* and possibly remotely */ |
| if (st->update_tail) |
| append_metadata_update(st, u, len); |
| else |
| free(u); |
| |
| } else { |
| pr_err("(imsm) Operation is not allowed on this container\n"); |
| } |
| } else { |
| /* On volume level we support following operations |
| * - takeover: raid10 -> raid0; raid0 -> raid10 |
| * - chunk size migration |
| * - migration: raid5 -> raid0; raid0 -> raid5 |
| */ |
| struct intel_super *super = st->sb; |
| struct intel_dev *dev = super->devlist; |
| int change; |
| dprintf("imsm: info: Volume operation\n"); |
| /* find requested device */ |
| while (dev) { |
| char *devnm = |
| imsm_find_array_devnm_by_subdev( |
| dev->index, st->container_devnm); |
| if (devnm && strcmp(devnm, geo.devnm) == 0) |
| break; |
| dev = dev->next; |
| } |
| if (dev == NULL) { |
| pr_err("Cannot find %s (%s) subarray\n", |
| geo.dev_name, geo.devnm); |
| goto exit_imsm_reshape_super; |
| } |
| super->current_vol = dev->index; |
| change = imsm_analyze_change(st, &geo, direction); |
| switch (change) { |
| case CH_TAKEOVER: |
| ret_val = imsm_takeover(st, &geo); |
| break; |
| case CH_MIGRATION: { |
| struct imsm_update_reshape_migration *u = NULL; |
| int len = |
| imsm_create_metadata_update_for_migration( |
| st, &geo, &u); |
| if (len < 1) { |
| dprintf("imsm: Cannot prepare update\n"); |
| break; |
| } |
| ret_val = 0; |
| /* update metadata locally */ |
| imsm_update_metadata_locally(st, u, len); |
| /* and possibly remotely */ |
| if (st->update_tail) |
| append_metadata_update(st, u, len); |
| else |
| free(u); |
| } |
| break; |
| case CH_ARRAY_SIZE: { |
| struct imsm_update_size_change *u = NULL; |
| int len = |
| imsm_create_metadata_update_for_size_change( |
| st, &geo, &u); |
| if (len < 1) { |
| dprintf("imsm: Cannot prepare update\n"); |
| break; |
| } |
| ret_val = 0; |
| /* update metadata locally */ |
| imsm_update_metadata_locally(st, u, len); |
| /* and possibly remotely */ |
| if (st->update_tail) |
| append_metadata_update(st, u, len); |
| else |
| free(u); |
| } |
| break; |
| default: |
| ret_val = 1; |
| } |
| } |
| |
| exit_imsm_reshape_super: |
| dprintf("imsm: reshape_super Exit code = %i\n", ret_val); |
| return ret_val; |
| } |
| |
| #define COMPLETED_OK 0 |
| #define COMPLETED_NONE 1 |
| #define COMPLETED_DELAYED 2 |
| |
| static int read_completed(int fd, unsigned long long *val) |
| { |
| int ret; |
| char buf[50]; |
| |
| ret = sysfs_fd_get_str(fd, buf, 50); |
| if (ret < 0) |
| return ret; |
| |
| ret = COMPLETED_OK; |
| if (strncmp(buf, "none", 4) == 0) { |
| ret = COMPLETED_NONE; |
| } else if (strncmp(buf, "delayed", 7) == 0) { |
| ret = COMPLETED_DELAYED; |
| } else { |
| char *ep; |
| *val = strtoull(buf, &ep, 0); |
| if (ep == buf || (*ep != 0 && *ep != '\n' && *ep != ' ')) |
| ret = -1; |
| } |
| return ret; |
| } |
| |
| /******************************************************************************* |
| * Function: wait_for_reshape_imsm |
| * Description: Function writes new sync_max value and waits until |
| * reshape process reach new position |
| * Parameters: |
| * sra : general array info |
| * ndata : number of disks in new array's layout |
| * Returns: |
| * 0 : success, |
| * 1 : there is no reshape in progress, |
| * -1 : fail |
| ******************************************************************************/ |
| int wait_for_reshape_imsm(struct mdinfo *sra, int ndata) |
| { |
| int fd = sysfs_get_fd(sra, NULL, "sync_completed"); |
| int retry = 3; |
| unsigned long long completed; |
| /* to_complete : new sync_max position */ |
| unsigned long long to_complete = sra->reshape_progress; |
| unsigned long long position_to_set = to_complete / ndata; |
| |
| if (fd < 0) { |
| dprintf("cannot open reshape_position\n"); |
| return 1; |
| } |
| |
| do { |
| if (sysfs_fd_get_ll(fd, &completed) < 0) { |
| if (!retry) { |
| dprintf("cannot read reshape_position (no reshape in progres)\n"); |
| close(fd); |
| return 1; |
| } |
| usleep(30000); |
| } else |
| break; |
| } while (retry--); |
| |
| if (completed > position_to_set) { |
| dprintf("wrong next position to set %llu (%llu)\n", |
| to_complete, position_to_set); |
| close(fd); |
| return -1; |
| } |
| dprintf("Position set: %llu\n", position_to_set); |
| if (sysfs_set_num(sra, NULL, "sync_max", |
| position_to_set) != 0) { |
| dprintf("cannot set reshape position to %llu\n", |
| position_to_set); |
| close(fd); |
| return -1; |
| } |
| |
| do { |
| int rc; |
| char action[20]; |
| int timeout = 3000; |
| |
| sysfs_wait(fd, &timeout); |
| if (sysfs_get_str(sra, NULL, "sync_action", |
| action, 20) > 0 && |
| strncmp(action, "reshape", 7) != 0) { |
| if (strncmp(action, "idle", 4) == 0) |
| break; |
| close(fd); |
| return -1; |
| } |
| |
| rc = read_completed(fd, &completed); |
| if (rc < 0) { |
| dprintf("cannot read reshape_position (in loop)\n"); |
| close(fd); |
| return 1; |
| } else if (rc == COMPLETED_NONE) |
| break; |
| } while (completed < position_to_set); |
| |
| close(fd); |
| return 0; |
| } |
| |
| /******************************************************************************* |
| * Function: check_degradation_change |
| * Description: Check that array hasn't become failed. |
| * Parameters: |
| * info : for sysfs access |
| * sources : source disks descriptors |
| * degraded: previous degradation level |
| * Returns: |
| * degradation level |
| ******************************************************************************/ |
| int check_degradation_change(struct mdinfo *info, |
| int *sources, |
| int degraded) |
| { |
| unsigned long long new_degraded; |
| int rv; |
| |
| rv = sysfs_get_ll(info, NULL, "degraded", &new_degraded); |
| if (rv == -1 || (new_degraded != (unsigned long long)degraded)) { |
| /* check each device to ensure it is still working */ |
| struct mdinfo *sd; |
| new_degraded = 0; |
| for (sd = info->devs ; sd ; sd = sd->next) { |
| if (sd->disk.state & (1<<MD_DISK_FAULTY)) |
| continue; |
| if (sd->disk.state & (1<<MD_DISK_SYNC)) { |
| char sbuf[100]; |
| |
| if (sysfs_get_str(info, |
| sd, "state", sbuf, sizeof(sbuf)) < 0 || |
| strstr(sbuf, "faulty") || |
| strstr(sbuf, "in_sync") == NULL) { |
| /* this device is dead */ |
| sd->disk.state = (1<<MD_DISK_FAULTY); |
| if (sd->disk.raid_disk >= 0 && |
| sources[sd->disk.raid_disk] >= 0) { |
| close(sources[ |
| sd->disk.raid_disk]); |
| sources[sd->disk.raid_disk] = |
| -1; |
| } |
| new_degraded++; |
| } |
| } |
| } |
| } |
| |
| return new_degraded; |
| } |
| |
| /******************************************************************************* |
| * Function: imsm_manage_reshape |
| * Description: Function finds array under reshape and it manages reshape |
| * process. It creates stripes backups (if required) and sets |
| * checkpoints. |
| * Parameters: |
| * afd : Backup handle (nattive) - not used |
| * sra : general array info |
| * reshape : reshape parameters - not used |
| * st : supertype structure |
| * blocks : size of critical section [blocks] |
| * fds : table of source device descriptor |
| * offsets : start of array (offest per devices) |
| * dests : not used |
| * destfd : table of destination device descriptor |
| * destoffsets : table of destination offsets (per device) |
| * Returns: |
| * 1 : success, reshape is done |
| * 0 : fail |
| ******************************************************************************/ |
| static int imsm_manage_reshape( |
| int afd, struct mdinfo *sra, struct reshape *reshape, |
| struct supertype *st, unsigned long backup_blocks, |
| int *fds, unsigned long long *offsets, |
| int dests, int *destfd, unsigned long long *destoffsets) |
| { |
| int ret_val = 0; |
| struct intel_super *super = st->sb; |
| struct intel_dev *dv; |
| unsigned int sector_size = super->sector_size; |
| struct imsm_dev *dev = NULL; |
| struct imsm_map *map_src, *map_dest; |
| int migr_vol_qan = 0; |
| int ndata, odata; /* [bytes] */ |
| int chunk; /* [bytes] */ |
| struct migr_record *migr_rec; |
| char *buf = NULL; |
| unsigned int buf_size; /* [bytes] */ |
| unsigned long long max_position; /* array size [bytes] */ |
| unsigned long long next_step; /* [blocks]/[bytes] */ |
| unsigned long long old_data_stripe_length; |
| unsigned long long start_src; /* [bytes] */ |
| unsigned long long start; /* [bytes] */ |
| unsigned long long start_buf_shift; /* [bytes] */ |
| int degraded = 0; |
| int source_layout = 0; |
| int subarray_index = -1; |
| |
| if (!sra) |
| return ret_val; |
| |
| if (!fds || !offsets) |
| goto abort; |
| |
| /* Find volume during the reshape */ |
| for (dv = super->devlist; dv; dv = dv->next) { |
| if (dv->dev->vol.migr_type == MIGR_GEN_MIGR && |
| dv->dev->vol.migr_state == 1) { |
| dev = dv->dev; |
| migr_vol_qan++; |
| subarray_index = dv->index; |
| } |
| } |
| /* Only one volume can migrate at the same time */ |
| if (migr_vol_qan != 1) { |
| pr_err("%s", migr_vol_qan ? |
| "Number of migrating volumes greater than 1\n" : |
| "There is no volume during migrationg\n"); |
| goto abort; |
| } |
| |
| map_dest = get_imsm_map(dev, MAP_0); |
| map_src = get_imsm_map(dev, MAP_1); |
| if (map_src == NULL) |
| goto abort; |
| |
| ndata = imsm_num_data_members(map_dest); |
| odata = imsm_num_data_members(map_src); |
| |
| chunk = __le16_to_cpu(map_src->blocks_per_strip) * 512; |
| old_data_stripe_length = odata * chunk; |
| |
| migr_rec = super->migr_rec; |
| |
| /* initialize migration record for start condition */ |
| if (sra->reshape_progress == 0) |
| init_migr_record_imsm(st, dev, sra); |
| else { |
| if (__le32_to_cpu(migr_rec->rec_status) != UNIT_SRC_NORMAL) { |
| dprintf("imsm: cannot restart migration when data are present in copy area.\n"); |
| goto abort; |
| } |
| /* Save checkpoint to update migration record for current |
| * reshape position (in md). It can be farther than current |
| * reshape position in metadata. |
| */ |
| if (save_checkpoint_imsm(st, sra, UNIT_SRC_NORMAL) == 1) { |
| /* ignore error == 2, this can mean end of reshape here |
| */ |
| dprintf("imsm: Cannot write checkpoint to migration record (UNIT_SRC_NORMAL, initial save)\n"); |
| goto abort; |
| } |
| } |
| |
| /* size for data */ |
| buf_size = __le32_to_cpu(migr_rec->blocks_per_unit) * 512; |
| /* extend buffer size for parity disk */ |
| buf_size += __le32_to_cpu(migr_rec->dest_depth_per_unit) * 512; |
| /* add space for stripe alignment */ |
| buf_size += old_data_stripe_length; |
| if (posix_memalign((void **)&buf, MAX_SECTOR_SIZE, buf_size)) { |
| dprintf("imsm: Cannot allocate checkpoint buffer\n"); |
| goto abort; |
| } |
| |
| max_position = sra->component_size * ndata; |
| source_layout = imsm_level_to_layout(map_src->raid_level); |
| |
| while (current_migr_unit(migr_rec) < |
| get_num_migr_units(migr_rec)) { |
| /* current reshape position [blocks] */ |
| unsigned long long current_position = |
| __le32_to_cpu(migr_rec->blocks_per_unit) |
| * current_migr_unit(migr_rec); |
| unsigned long long border; |
| |
| /* Check that array hasn't become failed. |
| */ |
| degraded = check_degradation_change(sra, fds, degraded); |
| if (degraded > 1) { |
| dprintf("imsm: Abort reshape due to degradation level (%i)\n", degraded); |
| goto abort; |
| } |
| |
| next_step = __le32_to_cpu(migr_rec->blocks_per_unit); |
| |
| if ((current_position + next_step) > max_position) |
| next_step = max_position - current_position; |
| |
| start = current_position * 512; |
| |
| /* align reading start to old geometry */ |
| start_buf_shift = start % old_data_stripe_length; |
| start_src = start - start_buf_shift; |
| |
| border = (start_src / odata) - (start / ndata); |
| border /= 512; |
| if (border <= __le32_to_cpu(migr_rec->dest_depth_per_unit)) { |
| /* save critical stripes to buf |
| * start - start address of current unit |
| * to backup [bytes] |
| * start_src - start address of current unit |
| * to backup alligned to source array |
| * [bytes] |
| */ |
| unsigned long long next_step_filler; |
| unsigned long long copy_length = next_step * 512; |
| |
| /* allign copy area length to stripe in old geometry */ |
| next_step_filler = ((copy_length + start_buf_shift) |
| % old_data_stripe_length); |
| if (next_step_filler) |
| next_step_filler = (old_data_stripe_length |
| - next_step_filler); |
| dprintf("save_stripes() parameters: start = %llu,\tstart_src = %llu,\tnext_step*512 = %llu,\tstart_in_buf_shift = %llu,\tnext_step_filler = %llu\n", |
| start, start_src, copy_length, |
| start_buf_shift, next_step_filler); |
| |
| if (save_stripes(fds, offsets, map_src->num_members, |
| chunk, map_src->raid_level, |
| source_layout, 0, NULL, start_src, |
| copy_length + |
| next_step_filler + start_buf_shift, |
| buf)) { |
| dprintf("imsm: Cannot save stripes to buffer\n"); |
| goto abort; |
| } |
| /* Convert data to destination format and store it |
| * in backup general migration area |
| */ |
| if (save_backup_imsm(st, dev, sra, |
| buf + start_buf_shift, copy_length)) { |
| dprintf("imsm: Cannot save stripes to target devices\n"); |
| goto abort; |
| } |
| if (save_checkpoint_imsm(st, sra, |
| UNIT_SRC_IN_CP_AREA)) { |
| dprintf("imsm: Cannot write checkpoint to migration record (UNIT_SRC_IN_CP_AREA)\n"); |
| goto abort; |
| } |
| } else { |
| /* set next step to use whole border area */ |
| border /= next_step; |
| if (border > 1) |
| next_step *= border; |
| } |
| /* When data backed up, checkpoint stored, |
| * kick the kernel to reshape unit of data |
| */ |
| next_step = next_step + sra->reshape_progress; |
| /* limit next step to array max position */ |
| if (next_step > max_position) |
| next_step = max_position; |
| sysfs_set_num(sra, NULL, "suspend_lo", sra->reshape_progress); |
| sysfs_set_num(sra, NULL, "suspend_hi", next_step); |
| sra->reshape_progress = next_step; |
| |
| /* wait until reshape finish */ |
| if (wait_for_reshape_imsm(sra, ndata)) { |
| dprintf("wait_for_reshape_imsm returned error!\n"); |
| goto abort; |
| } |
| if (sigterm) |
| goto abort; |
| |
| if (save_checkpoint_imsm(st, sra, UNIT_SRC_NORMAL) == 1) { |
| /* ignore error == 2, this can mean end of reshape here |
| */ |
| dprintf("imsm: Cannot write checkpoint to migration record (UNIT_SRC_NORMAL)\n"); |
| goto abort; |
| } |
| |
| } |
| |
| /* clear migr_rec on disks after successful migration */ |
| struct dl *d; |
| |
| memset(super->migr_rec_buf, 0, MIGR_REC_BUF_SECTORS*MAX_SECTOR_SIZE); |
| for (d = super->disks; d; d = d->next) { |
| if (d->index < 0 || is_failed(&d->disk)) |
| continue; |
| unsigned long long dsize; |
| |
| get_dev_size(d->fd, NULL, &dsize); |
| if (lseek64(d->fd, dsize - MIGR_REC_SECTOR_POSITION*sector_size, |
| SEEK_SET) >= 0) { |
| if ((unsigned int)write(d->fd, super->migr_rec_buf, |
| MIGR_REC_BUF_SECTORS*sector_size) != |
| MIGR_REC_BUF_SECTORS*sector_size) |
| perror("Write migr_rec failed"); |
| } |
| } |
| |
| /* return '1' if done */ |
| ret_val = 1; |
| |
| /* After the reshape eliminate size mismatch in metadata. |
| * Don't update md/component_size here, volume hasn't |
| * to take whole space. It is allowed by kernel. |
| * md/component_size will be set propoperly after next assembly. |
| */ |
| imsm_fix_size_mismatch(st, subarray_index); |
| |
| abort: |
| free(buf); |
| /* See Grow.c: abort_reshape() for further explanation */ |
| sysfs_set_num(sra, NULL, "suspend_lo", 0x7FFFFFFFFFFFFFFFULL); |
| sysfs_set_num(sra, NULL, "suspend_hi", 0); |
| sysfs_set_num(sra, NULL, "suspend_lo", 0); |
| |
| return ret_val; |
| } |
| |
| /******************************************************************************* |
| * Function: calculate_bitmap_min_chunksize |
| * Description: Calculates the minimal valid bitmap chunk size |
| * Parameters: |
| * max_bits : indicate how many bits can be used for the bitmap |
| * data_area_size : the size of the data area covered by the bitmap |
| * |
| * Returns: |
| * The bitmap chunk size |
| ******************************************************************************/ |
| static unsigned long long |
| calculate_bitmap_min_chunksize(unsigned long long max_bits, |
| unsigned long long data_area_size) |
| { |
| unsigned long long min_chunk = |
| 4096; /* sub-page chunks don't work yet.. */ |
| unsigned long long bits = data_area_size / min_chunk + 1; |
| |
| while (bits > max_bits) { |
| min_chunk *= 2; |
| bits = (bits + 1) / 2; |
| } |
| return min_chunk; |
| } |
| |
| /******************************************************************************* |
| * Function: calculate_bitmap_chunksize |
| * Description: Calculates the bitmap chunk size for the given device |
| * Parameters: |
| * st : supertype information |
| * dev : device for the bitmap |
| * |
| * Returns: |
| * The bitmap chunk size |
| ******************************************************************************/ |
| static unsigned long long calculate_bitmap_chunksize(struct supertype *st, |
| struct imsm_dev *dev) |
| { |
| struct intel_super *super = st->sb; |
| unsigned long long min_chunksize; |
| unsigned long long result = IMSM_DEFAULT_BITMAP_CHUNKSIZE; |
| size_t dev_size = imsm_dev_size(dev); |
| |
| min_chunksize = calculate_bitmap_min_chunksize( |
| IMSM_BITMAP_AREA_SIZE * super->sector_size, dev_size); |
| |
| if (result < min_chunksize) |
| result = min_chunksize; |
| |
| return result; |
| } |
| |
| /******************************************************************************* |
| * Function: init_bitmap_header |
| * Description: Initialize the bitmap header structure |
| * Parameters: |
| * st : supertype information |
| * bms : bitmap header struct to initialize |
| * dev : device for the bitmap |
| * |
| * Returns: |
| * 0 : success |
| * -1 : fail |
| ******************************************************************************/ |
| static int init_bitmap_header(struct supertype *st, struct bitmap_super_s *bms, |
| struct imsm_dev *dev) |
| { |
| int vol_uuid[4]; |
| |
| if (!bms || !dev) |
| return -1; |
| |
| bms->magic = __cpu_to_le32(BITMAP_MAGIC); |
| bms->version = __cpu_to_le32(BITMAP_MAJOR_HI); |
| bms->daemon_sleep = __cpu_to_le32(IMSM_DEFAULT_BITMAP_DAEMON_SLEEP); |
| bms->sync_size = __cpu_to_le64(IMSM_BITMAP_AREA_SIZE); |
| bms->write_behind = __cpu_to_le32(0); |
| |
| uuid_from_super_imsm(st, vol_uuid); |
| memcpy(bms->uuid, vol_uuid, 16); |
| |
| bms->chunksize = calculate_bitmap_chunksize(st, dev); |
| |
| return 0; |
| } |
| |
| /******************************************************************************* |
| * Function: validate_internal_bitmap_for_drive |
| * Description: Verify if the bitmap header for a given drive. |
| * Parameters: |
| * st : supertype information |
| * offset : The offset from the beginning of the drive where to look for |
| * the bitmap header. |
| * d : the drive info |
| * |
| * Returns: |
| * 0 : success |
| * -1 : fail |
| ******************************************************************************/ |
| static int validate_internal_bitmap_for_drive(struct supertype *st, |
| unsigned long long offset, |
| struct dl *d) |
| { |
| struct intel_super *super = st->sb; |
| int ret = -1; |
| int vol_uuid[4]; |
| bitmap_super_t *bms; |
| int fd; |
| |
| if (!d) |
| return -1; |
| |
| void *read_buf; |
| |
| if (posix_memalign(&read_buf, MAX_SECTOR_SIZE, IMSM_BITMAP_HEADER_SIZE)) |
| return -1; |
| |
| fd = d->fd; |
| if (fd < 0) { |
| fd = open(d->devname, O_RDONLY, 0); |
| if (fd < 0) { |
| dprintf("cannot open the device %s\n", d->devname); |
| goto abort; |
| } |
| } |
| |
| if (lseek64(fd, offset * super->sector_size, SEEK_SET) < 0) |
| goto abort; |
| if (read(fd, read_buf, IMSM_BITMAP_HEADER_SIZE) != |
| IMSM_BITMAP_HEADER_SIZE) |
| goto abort; |
| |
| uuid_from_super_imsm(st, vol_uuid); |
| |
| bms = read_buf; |
| if ((bms->magic != __cpu_to_le32(BITMAP_MAGIC)) || |
| (bms->version != __cpu_to_le32(BITMAP_MAJOR_HI)) || |
| (!same_uuid((int *)bms->uuid, vol_uuid, st->ss->swapuuid))) { |
| dprintf("wrong bitmap header detected\n"); |
| goto abort; |
| } |
| |
| ret = 0; |
| abort: |
| if ((d->fd < 0) && (fd >= 0)) |
| close(fd); |
| if (read_buf) |
| free(read_buf); |
| |
| return ret; |
| } |
| |
| /******************************************************************************* |
| * Function: validate_internal_bitmap_imsm |
| * Description: Verify if the bitmap header is in place and with proper data. |
| * Parameters: |
| * st : supertype information |
| * |
| * Returns: |
| * 0 : success or device w/o RWH_BITMAP |
| * -1 : fail |
| ******************************************************************************/ |
| static int validate_internal_bitmap_imsm(struct supertype *st) |
| { |
| struct intel_super *super = st->sb; |
| struct imsm_dev *dev = get_imsm_dev(super, super->current_vol); |
| unsigned long long offset; |
| struct dl *d; |
| |
| if (!dev) |
| return -1; |
| |
| if (dev->rwh_policy != RWH_BITMAP) |
| return 0; |
| |
| offset = get_bitmap_header_sector(super, super->current_vol); |
| for (d = super->disks; d; d = d->next) { |
| if (d->index < 0 || is_failed(&d->disk)) |
| continue; |
| |
| if (validate_internal_bitmap_for_drive(st, offset, d)) { |
| pr_err("imsm: bitmap validation failed\n"); |
| return -1; |
| } |
| } |
| return 0; |
| } |
| |
| /******************************************************************************* |
| * Function: add_internal_bitmap_imsm |
| * Description: Mark the volume to use the bitmap and updates the chunk size value. |
| * Parameters: |
| * st : supertype information |
| * chunkp : bitmap chunk size |
| * delay : not used for imsm |
| * write_behind : not used for imsm |
| * size : not used for imsm |
| * may_change : not used for imsm |
| * amajor : not used for imsm |
| * |
| * Returns: |
| * 0 : success |
| * -1 : fail |
| ******************************************************************************/ |
| static int add_internal_bitmap_imsm(struct supertype *st, int *chunkp, |
| int delay, int write_behind, |
| unsigned long long size, int may_change, |
| int amajor) |
| { |
| struct intel_super *super = st->sb; |
| int vol_idx = super->current_vol; |
| struct imsm_dev *dev; |
| |
| if (!super->devlist || vol_idx == -1 || !chunkp) |
| return -1; |
| |
| dev = get_imsm_dev(super, vol_idx); |
| |
| if (!dev) { |
| dprintf("cannot find the device for volume index %d\n", |
| vol_idx); |
| return -1; |
| } |
| dev->rwh_policy = RWH_BITMAP; |
| |
| *chunkp = calculate_bitmap_chunksize(st, dev); |
| |
| return 0; |
| } |
| |
| /******************************************************************************* |
| * Function: locate_bitmap_imsm |
| * Description: Seek 'fd' to start of write-intent-bitmap. |
| * Parameters: |
| * st : supertype information |
| * fd : file descriptor for the device |
| * node_num : not used for imsm |
| * |
| * Returns: |
| * 0 : success |
| * -1 : fail |
| ******************************************************************************/ |
| static int locate_bitmap_imsm(struct supertype *st, int fd, int node_num) |
| { |
| struct intel_super *super = st->sb; |
| unsigned long long offset; |
| int vol_idx = super->current_vol; |
| |
| if (!super->devlist || vol_idx == -1) |
| return -1; |
| |
| offset = get_bitmap_header_sector(super, super->current_vol); |
| dprintf("bitmap header offset is %llu\n", offset); |
| |
| lseek64(fd, offset << 9, 0); |
| |
| return 0; |
| } |
| |
| /******************************************************************************* |
| * Function: write_init_bitmap_imsm |
| * Description: Write a bitmap header and prepares the area for the bitmap. |
| * Parameters: |
| * st : supertype information |
| * fd : file descriptor for the device |
| * update : not used for imsm |
| * |
| * Returns: |
| * 0 : success |
| * -1 : fail |
| ******************************************************************************/ |
| static int write_init_bitmap_imsm(struct supertype *st, int fd, |
| enum bitmap_update update) |
| { |
| struct intel_super *super = st->sb; |
| int vol_idx = super->current_vol; |
| int ret = 0; |
| unsigned long long offset; |
| bitmap_super_t bms = { 0 }; |
| size_t written = 0; |
| size_t to_write; |
| ssize_t rv_num; |
| void *buf; |
| |
| if (!super->devlist || !super->sector_size || vol_idx == -1) |
| return -1; |
| |
| struct imsm_dev *dev = get_imsm_dev(super, vol_idx); |
| |
| /* first clear the space for bitmap header */ |
| unsigned long long bitmap_area_start = |
| get_bitmap_header_sector(super, vol_idx); |
| |
| dprintf("zeroing area start (%llu) and size (%u)\n", bitmap_area_start, |
| IMSM_BITMAP_AND_HEADER_SIZE / super->sector_size); |
| if (zero_disk_range(fd, bitmap_area_start, |
| IMSM_BITMAP_HEADER_SIZE / super->sector_size)) { |
| pr_err("imsm: cannot zeroing the space for the bitmap\n"); |
| return -1; |
| } |
| |
| /* The bitmap area should be filled with "1"s to perform initial |
| * synchronization. |
| */ |
| if (posix_memalign(&buf, MAX_SECTOR_SIZE, MAX_SECTOR_SIZE)) |
| return -1; |
| memset(buf, 0xFF, MAX_SECTOR_SIZE); |
| offset = get_bitmap_sector(super, vol_idx); |
| lseek64(fd, offset << 9, 0); |
| while (written < IMSM_BITMAP_AREA_SIZE) { |
| to_write = IMSM_BITMAP_AREA_SIZE - written; |
| if (to_write > MAX_SECTOR_SIZE) |
| to_write = MAX_SECTOR_SIZE; |
| rv_num = write(fd, buf, MAX_SECTOR_SIZE); |
| if (rv_num != MAX_SECTOR_SIZE) { |
| ret = -1; |
| dprintf("cannot initialize bitmap area\n"); |
| goto abort; |
| } |
| written += rv_num; |
| } |
| |
| /* write a bitmap header */ |
| init_bitmap_header(st, &bms, dev); |
| memset(buf, 0, MAX_SECTOR_SIZE); |
| memcpy(buf, &bms, sizeof(bitmap_super_t)); |
| if (locate_bitmap_imsm(st, fd, 0)) { |
| ret = -1; |
| dprintf("cannot locate the bitmap\n"); |
| goto abort; |
| } |
| if (write(fd, buf, MAX_SECTOR_SIZE) != MAX_SECTOR_SIZE) { |
| ret = -1; |
| dprintf("cannot write the bitmap header\n"); |
| goto abort; |
| } |
| fsync(fd); |
| |
| abort: |
| free(buf); |
| |
| return ret; |
| } |
| |
| /******************************************************************************* |
| * Function: is_vol_to_setup_bitmap |
| * Description: Checks if a bitmap should be activated on the dev. |
| * Parameters: |
| * info : info about the volume to setup the bitmap |
| * dev : the device to check against bitmap creation |
| * |
| * Returns: |
| * 0 : bitmap should be set up on the device |
| * -1 : otherwise |
| ******************************************************************************/ |
| static int is_vol_to_setup_bitmap(struct mdinfo *info, struct imsm_dev *dev) |
| { |
| if (!dev || !info) |
| return -1; |
| |
| if ((strcmp((char *)dev->volume, info->name) == 0) && |
| (dev->rwh_policy == RWH_BITMAP)) |
| return -1; |
| |
| return 0; |
| } |
| |
| /******************************************************************************* |
| * Function: set_bitmap_sysfs |
| * Description: Set the sysfs atributes of a given volume to activate the bitmap. |
| * Parameters: |
| * info : info about the volume where the bitmap should be setup |
| * chunksize : bitmap chunk size |
| * location : location of the bitmap |
| * |
| * Returns: |
| * 0 : success |
| * -1 : fail |
| ******************************************************************************/ |
| static int set_bitmap_sysfs(struct mdinfo *info, unsigned long long chunksize, |
| char *location) |
| { |
| /* The bitmap/metadata is set to external to allow changing of value for |
| * bitmap/location. When external is used, the kernel will treat an offset |
| * related to the device's first lba (in opposition to the "internal" case |
| * when this value is related to the beginning of the superblock). |
| */ |
| if (sysfs_set_str(info, NULL, "bitmap/metadata", "external")) { |
| dprintf("failed to set bitmap/metadata\n"); |
| return -1; |
| } |
| |
| /* It can only be changed when no bitmap is active. |
| * Should be bigger than 512 and must be power of 2. |
| * It is expecting the value in bytes. |
| */ |
| if (sysfs_set_num(info, NULL, "bitmap/chunksize", |
| __cpu_to_le32(chunksize))) { |
| dprintf("failed to set bitmap/chunksize\n"); |
| return -1; |
| } |
| |
| /* It is expecting the value in sectors. */ |
| if (sysfs_set_num(info, NULL, "bitmap/space", |
| __cpu_to_le64(IMSM_BITMAP_AREA_SIZE))) { |
| dprintf("failed to set bitmap/space\n"); |
| return -1; |
| } |
| |
| /* Determines the delay between the bitmap updates. |
| * It is expecting the value in seconds. |
| */ |
| if (sysfs_set_num(info, NULL, "bitmap/time_base", |
| __cpu_to_le64(IMSM_DEFAULT_BITMAP_DAEMON_SLEEP))) { |
| dprintf("failed to set bitmap/time_base\n"); |
| return -1; |
| } |
| |
| /* It is expecting the value in sectors with a sign at the beginning. */ |
| if (sysfs_set_str(info, NULL, "bitmap/location", location)) { |
| dprintf("failed to set bitmap/location\n"); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| /******************************************************************************* |
| * Function: set_bitmap_imsm |
| * Description: Setup the bitmap for the given volume |
| * Parameters: |
| * st : supertype information |
| * info : info about the volume where the bitmap should be setup |
| * |
| * Returns: |
| * 0 : success |
| * -1 : fail |
| ******************************************************************************/ |
| static int set_bitmap_imsm(struct supertype *st, struct mdinfo *info) |
| { |
| struct intel_super *super = st->sb; |
| int prev_current_vol = super->current_vol; |
| struct imsm_dev *dev; |
| int ret = -1; |
| char location[16] = ""; |
| unsigned long long chunksize; |
| struct intel_dev *dev_it; |
| |
| for (dev_it = super->devlist; dev_it; dev_it = dev_it->next) { |
| super->current_vol = dev_it->index; |
| dev = get_imsm_dev(super, super->current_vol); |
| |
| if (is_vol_to_setup_bitmap(info, dev)) { |
| if (validate_internal_bitmap_imsm(st)) { |
| dprintf("bitmap header validation failed\n"); |
| goto abort; |
| } |
| |
| chunksize = calculate_bitmap_chunksize(st, dev); |
| dprintf("chunk size is %llu\n", chunksize); |
| |
| snprintf(location, sizeof(location), "+%llu", |
| get_bitmap_sector(super, super->current_vol)); |
| dprintf("bitmap offset is %s\n", location); |
| |
| if (set_bitmap_sysfs(info, chunksize, location)) { |
| dprintf("cannot setup the bitmap\n"); |
| goto abort; |
| } |
| } |
| } |
| ret = 0; |
| abort: |
| super->current_vol = prev_current_vol; |
| return ret; |
| } |
| |
| struct superswitch super_imsm = { |
| .examine_super = examine_super_imsm, |
| .brief_examine_super = brief_examine_super_imsm, |
| .brief_examine_subarrays = brief_examine_subarrays_imsm, |
| .export_examine_super = export_examine_super_imsm, |
| .detail_super = detail_super_imsm, |
| .brief_detail_super = brief_detail_super_imsm, |
| .write_init_super = write_init_super_imsm, |
| .validate_geometry = validate_geometry_imsm, |
| .add_to_super = add_to_super_imsm, |
| .remove_from_super = remove_from_super_imsm, |
| .detail_platform = detail_platform_imsm, |
| .export_detail_platform = export_detail_platform_imsm, |
| .kill_subarray = kill_subarray_imsm, |
| .update_subarray = update_subarray_imsm, |
| .load_container = load_container_imsm, |
| .default_geometry = default_geometry_imsm, |
| .get_disk_controller_domain = imsm_get_disk_controller_domain, |
| .reshape_super = imsm_reshape_super, |
| .manage_reshape = imsm_manage_reshape, |
| .recover_backup = recover_backup_imsm, |
| .examine_badblocks = examine_badblocks_imsm, |
| .match_home = match_home_imsm, |
| .uuid_from_super= uuid_from_super_imsm, |
| .getinfo_super = getinfo_super_imsm, |
| .getinfo_super_disks = getinfo_super_disks_imsm, |
| .update_super = update_super_imsm, |
| |
| .avail_size = avail_size_imsm, |
| .get_spare_criteria = get_spare_criteria_imsm, |
| |
| .compare_super = compare_super_imsm, |
| |
| .load_super = load_super_imsm, |
| .init_super = init_super_imsm, |
| .store_super = store_super_imsm, |
| .free_super = free_super_imsm, |
| .match_metadata_desc = match_metadata_desc_imsm, |
| .container_content = container_content_imsm, |
| .validate_container = validate_container_imsm, |
| |
| .add_internal_bitmap = add_internal_bitmap_imsm, |
| .locate_bitmap = locate_bitmap_imsm, |
| .write_bitmap = write_init_bitmap_imsm, |
| .set_bitmap = set_bitmap_imsm, |
| |
| .write_init_ppl = write_init_ppl_imsm, |
| .validate_ppl = validate_ppl_imsm, |
| |
| .external = 1, |
| .name = "imsm", |
| |
| /* for mdmon */ |
| .open_new = imsm_open_new, |
| .set_array_state= imsm_set_array_state, |
| .set_disk = imsm_set_disk, |
| .sync_metadata = imsm_sync_metadata, |
| .activate_spare = imsm_activate_spare, |
| .process_update = imsm_process_update, |
| .prepare_update = imsm_prepare_update, |
| .record_bad_block = imsm_record_badblock, |
| .clear_bad_block = imsm_clear_badblock, |
| .get_bad_blocks = imsm_get_badblocks, |
| }; |