| /* |
| * mdadm - manage Linux "md" devices aka RAID arrays. |
| * |
| * Copyright (C) 2001-2006 Neil Brown <neilb@suse.de> |
| * |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| * |
| * Author: Neil Brown |
| * Email: <neilb@cse.unsw.edu.au> |
| * Paper: Neil Brown |
| * School of Computer Science and Engineering |
| * The University of New South Wales |
| * Sydney, 2052 |
| * Australia |
| */ |
| |
| #include "mdadm.h" |
| #include "md_p.h" |
| #include "md_u.h" |
| |
| int Detail(char *dev, int brief, int export, int test, char *homehost) |
| { |
| /* |
| * Print out details for an md array by using |
| * GET_ARRAY_INFO and GET_DISK_INFO ioctl calls |
| */ |
| |
| int fd = open(dev, O_RDONLY); |
| int vers; |
| mdu_array_info_t array; |
| mdu_disk_info_t *disks; |
| int next; |
| int d; |
| time_t atime; |
| char *c; |
| char *devices = NULL; |
| int spares = 0; |
| struct stat stb; |
| int is_26 = get_linux_version() >= 2006000; |
| int is_rebuilding = 0; |
| int failed = 0; |
| struct supertype *st = NULL; |
| int max_disks = MD_SB_DISKS; /* just a default */ |
| struct mdinfo info; |
| struct mdinfo *sra; |
| |
| int rv = test ? 4 : 1; |
| int avail_disks = 0; |
| char *avail; |
| |
| if (fd < 0) { |
| fprintf(stderr, Name ": cannot open %s: %s\n", |
| dev, strerror(errno)); |
| return rv; |
| } |
| vers = md_get_version(fd); |
| if (vers < 0) { |
| fprintf(stderr, Name ": %s does not appear to be an md device\n", |
| dev); |
| close(fd); |
| return rv; |
| } |
| if (vers < 9000) { |
| fprintf(stderr, Name ": cannot get detail for md device %s: driver version too old.\n", |
| dev); |
| close(fd); |
| return rv; |
| } |
| if (ioctl(fd, GET_ARRAY_INFO, &array)<0) { |
| if (errno == ENODEV) |
| fprintf(stderr, Name ": md device %s does not appear to be active.\n", |
| dev); |
| else |
| fprintf(stderr, Name ": cannot get array detail for %s: %s\n", |
| dev, strerror(errno)); |
| close(fd); |
| return rv; |
| } |
| sra = sysfs_read(fd, 0, GET_VERSION); |
| st = super_by_fd(fd); |
| |
| if (fstat(fd, &stb) != 0 && !S_ISBLK(stb.st_mode)) |
| stb.st_rdev = 0; |
| rv = 0; |
| |
| if (st) max_disks = st->max_devs; |
| |
| /* try to load a superblock */ |
| for (d= 0; d<max_disks; d++) { |
| mdu_disk_info_t disk; |
| char *dv; |
| disk.number = d; |
| if (ioctl(fd, GET_DISK_INFO, &disk) < 0) |
| continue; |
| if (d >= array.raid_disks && |
| disk.major == 0 && |
| disk.minor == 0) |
| continue; |
| if ((dv=map_dev(disk.major, disk.minor, 1))) { |
| if ((!st || !st->sb) && |
| (disk.state & (1<<MD_DISK_ACTIVE))) { |
| /* try to read the superblock from this device |
| * to get more info |
| */ |
| int fd2 = dev_open(dv, O_RDONLY); |
| if (fd2 >=0 && st && |
| st->ss->load_super(st, fd2, NULL) == 0) { |
| st->ss->getinfo_super(st, &info); |
| if (info.array.ctime != array.ctime || |
| info.array.level != array.level) |
| st->ss->free_super(st); |
| } |
| if (fd2 >= 0) close(fd2); |
| } |
| } |
| } |
| |
| /* Ok, we have some info to print... */ |
| c = map_num(pers, array.level); |
| |
| if (export) { |
| if (c) |
| printf("MD_LEVEL=%s\n", c); |
| printf("MD_DEVICES=%d\n", array.raid_disks); |
| if (sra && sra->array.major_version < 0) |
| printf("MD_METADATA=%s\n", sra->text_version); |
| else |
| printf("MD_METADATA=%d.%02d\n", |
| array.major_version, array.minor_version); |
| |
| if (st && st->sb) |
| st->ss->export_detail_super(st); |
| goto out; |
| } |
| |
| if (brief) { |
| mdu_bitmap_file_t bmf; |
| printf("ARRAY %s level=%s num-devices=%d", dev, |
| c?c:"-unknown-", |
| array.raid_disks ); |
| if (sra && sra->array.major_version < 0) |
| printf(" metadata=%s", sra->text_version); |
| else |
| printf(" metadata=%d.%02d", |
| array.major_version, array.minor_version); |
| |
| /* Only try GET_BITMAP_FILE for 0.90.01 and later */ |
| if (vers >= 9001 && |
| ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 && |
| bmf.pathname[0]) { |
| printf(" bitmap=%s", bmf.pathname); |
| } |
| } else { |
| mdu_bitmap_file_t bmf; |
| unsigned long long larray_size; |
| struct mdstat_ent *ms = mdstat_read(0, 0); |
| struct mdstat_ent *e; |
| int devnum = array.md_minor; |
| if (major(stb.st_rdev) == get_mdp_major()) |
| devnum = -1 - devnum; |
| |
| for (e=ms; e; e=e->next) |
| if (e->devnum == devnum) |
| break; |
| if (!get_dev_size(fd, NULL, &larray_size)) |
| larray_size = 0; |
| |
| printf("%s:\n", dev); |
| |
| if (sra && sra->array.major_version < 0) |
| printf(" Version : %s\n", sra->text_version); |
| else |
| printf(" Version : %d.%02d\n", |
| array.major_version, array.minor_version); |
| |
| atime = array.ctime; |
| printf(" Creation Time : %.24s\n", ctime(&atime)); |
| if (array.raid_disks == 0) c = "container"; |
| printf(" Raid Level : %s\n", c?c:"-unknown-"); |
| if (larray_size) |
| printf(" Array Size : %llu%s\n", (larray_size>>10), human_size(larray_size)); |
| if (array.level >= 1) { |
| if (array.major_version != 0 && |
| (larray_size >= 0xFFFFFFFFULL|| array.size == 0)) { |
| unsigned long long dsize = get_component_size(fd); |
| if (dsize > 0) |
| printf(" Used Dev Size : %llu%s\n", |
| dsize/2, |
| human_size((long long)dsize<<9)); |
| else |
| printf(" Used Dev Size : unknown\n"); |
| } else |
| printf(" Used Dev Size : %d%s\n", array.size, |
| human_size((long long)array.size<<10)); |
| } |
| printf(" Raid Devices : %d\n", array.raid_disks); |
| printf(" Total Devices : %d\n", array.nr_disks); |
| printf("Preferred Minor : %d\n", array.md_minor); |
| if (sra == NULL || sra->array.major_version >= 0) |
| printf(" Persistence : Superblock is %spersistent\n", |
| array.not_persistent?"not ":""); |
| printf("\n"); |
| /* Only try GET_BITMAP_FILE for 0.90.01 and later */ |
| if (vers >= 9001 && |
| ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 && |
| bmf.pathname[0]) { |
| printf(" Intent Bitmap : %s\n", bmf.pathname); |
| printf("\n"); |
| } else if (array.state & (1<<MD_SB_BITMAP_PRESENT)) |
| printf(" Intent Bitmap : Internal\n\n"); |
| atime = array.utime; |
| printf(" Update Time : %.24s\n", ctime(&atime)); |
| printf(" State : %s%s%s%s\n", |
| (array.state&(1<<MD_SB_CLEAN))?"clean":"active", |
| array.active_disks < array.raid_disks? ", degraded":"", |
| (!e || e->percent < 0) ? "" : |
| (e->resync) ? ", resyncing": ", recovering", |
| larray_size ? "": ", Not Started"); |
| printf(" Active Devices : %d\n", array.active_disks); |
| printf("Working Devices : %d\n", array.working_disks); |
| printf(" Failed Devices : %d\n", array.failed_disks); |
| printf(" Spare Devices : %d\n", array.spare_disks); |
| printf("\n"); |
| if (array.level == 5) { |
| c = map_num(r5layout, array.layout); |
| printf(" Layout : %s\n", c?c:"-unknown-"); |
| } |
| if (array.level == 10) { |
| printf(" Layout :"); |
| print_r10_layout(array.layout); |
| printf("\n"); |
| } |
| switch (array.level) { |
| case 0: |
| case 4: |
| case 5: |
| case 10: |
| case 6: |
| if (array.chunk_size) |
| printf(" Chunk Size : %dK\n\n", |
| array.chunk_size/1024); |
| break; |
| case -1: |
| printf(" Rounding : %dK\n\n", array.chunk_size/1024); |
| break; |
| default: break; |
| } |
| |
| if (e && e->percent >= 0) { |
| printf(" Re%s Status : %d%% complete\n", |
| (st && st->sb && info.reshape_active)? |
| "shape":"build", |
| e->percent); |
| is_rebuilding = 1; |
| } |
| free_mdstat(ms); |
| |
| if (st->sb && info.reshape_active) { |
| #if 0 |
| This is pretty boring |
| printf(" Reshape pos'n : %llu%s\n", (unsigned long long) info.reshape_progress<<9, |
| human_size(info.reshape_progress<<9)); |
| #endif |
| if (info.delta_disks > 0) |
| printf(" Delta Devices : %d, (%d->%d)\n", |
| info.delta_disks, array.raid_disks - info.delta_disks, array.raid_disks); |
| if (info.delta_disks < 0) |
| printf(" Delta Devices : %d, (%d->%d)\n", |
| info.delta_disks, array.raid_disks, array.raid_disks + info.delta_disks); |
| if (info.new_level != array.level) { |
| char *c = map_num(pers, info.new_level); |
| printf(" New Level : %s\n", c?c:"-unknown-"); |
| } |
| if (info.new_level != array.level || |
| info.new_layout != array.layout) { |
| if (info.new_level == 5) { |
| char *c = map_num(r5layout, info.new_layout); |
| printf(" New Layout : %s\n", |
| c?c:"-unknown-"); |
| } |
| if (info.new_level == 10) { |
| printf(" New Layout : near=%d, %s=%d\n", |
| info.new_layout&255, |
| (info.new_layout&0x10000)?"offset":"far", |
| (info.new_layout>>8)&255); |
| } |
| } |
| if (info.new_chunk != array.chunk_size) |
| printf(" New Chunksize : %dK\n", info.new_chunk/1024); |
| printf("\n"); |
| } else if (e && e->percent >= 0) |
| printf("\n"); |
| if (st && st->sb) |
| st->ss->detail_super(st, homehost); |
| |
| printf(" Number Major Minor RaidDevice State\n"); |
| } |
| disks = malloc(max_disks * sizeof(mdu_disk_info_t)); |
| for (d=0; d<max_disks; d++) { |
| disks[d].state = (1<<MD_DISK_REMOVED); |
| disks[d].major = disks[d].minor = 0; |
| disks[d].number = disks[d].raid_disk = d; |
| } |
| |
| next = array.raid_disks; |
| for (d=0; d < max_disks; d++) { |
| mdu_disk_info_t disk; |
| disk.number = d; |
| if (ioctl(fd, GET_DISK_INFO, &disk) < 0) { |
| if (d < array.raid_disks) |
| fprintf(stderr, Name ": cannot get device detail for device %d: %s\n", |
| d, strerror(errno)); |
| continue; |
| } |
| if (disk.major == 0 && disk.minor == 0) |
| continue; |
| if (disk.raid_disk >= 0 && disk.raid_disk < array.raid_disks) |
| disks[disk.raid_disk] = disk; |
| else if (next < max_disks) |
| disks[next++] = disk; |
| } |
| |
| avail = calloc(array.raid_disks, 1); |
| for (d= 0; d < max_disks; d++) { |
| char *dv; |
| mdu_disk_info_t disk = disks[d]; |
| |
| if (d >= array.raid_disks && |
| disk.major == 0 && |
| disk.minor == 0) |
| continue; |
| if (!brief) { |
| if (d == array.raid_disks) printf("\n"); |
| if (disk.raid_disk < 0) |
| printf(" %5d %5d %5d - ", |
| disk.number, disk.major, disk.minor); |
| else |
| printf(" %5d %5d %5d %5d ", |
| disk.number, disk.major, disk.minor, disk.raid_disk); |
| if (disk.state & (1<<MD_DISK_FAULTY)) { |
| printf(" faulty"); |
| if (disk.raid_disk < array.raid_disks && |
| disk.raid_disk >= 0) |
| failed++; |
| } |
| if (disk.state & (1<<MD_DISK_ACTIVE)) printf(" active"); |
| if (disk.state & (1<<MD_DISK_SYNC)) printf(" sync"); |
| if (disk.state & (1<<MD_DISK_REMOVED)) printf(" removed"); |
| if (disk.state & (1<<MD_DISK_WRITEMOSTLY)) printf(" writemostly"); |
| if ((disk.state & |
| ((1<<MD_DISK_ACTIVE)|(1<<MD_DISK_SYNC)|(1<<MD_DISK_REMOVED))) |
| == 0) { |
| printf(" spare"); |
| if (is_26) { |
| if (disk.raid_disk < array.raid_disks && disk.raid_disk >= 0) |
| printf(" rebuilding"); |
| } else if (is_rebuilding && failed) { |
| /* Taking a bit of a risk here, we remove the |
| * device from the array, and then put it back. |
| * If this fails, we are rebuilding |
| */ |
| int err = ioctl(fd, HOT_REMOVE_DISK, makedev(disk.major, disk.minor)); |
| if (err == 0) ioctl(fd, HOT_ADD_DISK, makedev(disk.major, disk.minor)); |
| if (err && errno == EBUSY) |
| printf(" rebuilding"); |
| } |
| } |
| } |
| if (disk.state == 0) spares++; |
| if (test && d < array.raid_disks |
| && !(disk.state & (1<<MD_DISK_SYNC))) |
| rv |= 1; |
| if (d < array.raid_disks |
| && (disk.state & (1<<MD_DISK_SYNC))) { |
| avail_disks ++; |
| avail[d] = 1; |
| } |
| if ((dv=map_dev(disk.major, disk.minor, 0))) { |
| if (brief) { |
| if (devices) { |
| devices = realloc(devices, |
| strlen(devices)+1+strlen(dv)+1); |
| strcat(strcat(devices,","),dv); |
| } else |
| devices = strdup(dv); |
| } else |
| printf(" %s", dv); |
| } |
| if (!brief) printf("\n"); |
| } |
| if (spares && brief) printf(" spares=%d", spares); |
| if (brief && st && st->sb) |
| st->ss->brief_detail_super(st); |
| st->ss->free_super(st); |
| |
| if (brief > 1 && devices) printf("\n devices=%s", devices); |
| if (brief) printf("\n"); |
| if (test && |
| !enough(array.level, array.raid_disks, array.layout, |
| 1, avail, avail_disks)) |
| rv = 2; |
| |
| out: |
| close(fd); |
| return rv; |
| } |
