| /* |
| * Copyright (C) 2018 Western Digital Corporation or its affiliates. |
| * |
| * This file is released under the GPL. |
| */ |
| |
| #include <errno.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include <fcntl.h> |
| #include <sys/stat.h> |
| #include <unistd.h> |
| |
| #include "os/os.h" |
| #include "file.h" |
| #include "fio.h" |
| #include "lib/pow2.h" |
| #include "log.h" |
| #include "oslib/asprintf.h" |
| #include "smalloc.h" |
| #include "verify.h" |
| #include "pshared.h" |
| #include "zbd.h" |
| |
| /** |
| * zbd_get_zoned_model - Get a device zoned model |
| * @td: FIO thread data |
| * @f: FIO file for which to get model information |
| */ |
| int zbd_get_zoned_model(struct thread_data *td, struct fio_file *f, |
| enum zbd_zoned_model *model) |
| { |
| int ret; |
| |
| if (td->io_ops && td->io_ops->get_zoned_model) |
| ret = td->io_ops->get_zoned_model(td, f, model); |
| else |
| ret = blkzoned_get_zoned_model(td, f, model); |
| if (ret < 0) { |
| td_verror(td, errno, "get zoned model failed"); |
| log_err("%s: get zoned model failed (%d).\n", |
| f->file_name, errno); |
| } |
| |
| return ret; |
| } |
| |
| /** |
| * zbd_report_zones - Get zone information |
| * @td: FIO thread data. |
| * @f: FIO file for which to get zone information |
| * @offset: offset from which to report zones |
| * @zones: Array of struct zbd_zone |
| * @nr_zones: Size of @zones array |
| * |
| * Get zone information into @zones starting from the zone at offset @offset |
| * for the device specified by @f. |
| * |
| * Returns the number of zones reported upon success and a negative error code |
| * upon failure. If the zone report is empty, always assume an error (device |
| * problem) and return -EIO. |
| */ |
| int zbd_report_zones(struct thread_data *td, struct fio_file *f, |
| uint64_t offset, struct zbd_zone *zones, |
| unsigned int nr_zones) |
| { |
| int ret; |
| |
| if (td->io_ops && td->io_ops->report_zones) |
| ret = td->io_ops->report_zones(td, f, offset, zones, nr_zones); |
| else |
| ret = blkzoned_report_zones(td, f, offset, zones, nr_zones); |
| if (ret < 0) { |
| td_verror(td, errno, "report zones failed"); |
| log_err("%s: report zones from sector %llu failed (%d).\n", |
| f->file_name, (unsigned long long)offset >> 9, errno); |
| } else if (ret == 0) { |
| td_verror(td, errno, "Empty zone report"); |
| log_err("%s: report zones from sector %llu is empty.\n", |
| f->file_name, (unsigned long long)offset >> 9); |
| ret = -EIO; |
| } |
| |
| return ret; |
| } |
| |
| /** |
| * zbd_reset_wp - reset the write pointer of a range of zones |
| * @td: FIO thread data. |
| * @f: FIO file for which to reset zones |
| * @offset: Starting offset of the first zone to reset |
| * @length: Length of the range of zones to reset |
| * |
| * Reset the write pointer of all zones in the range @offset...@offset+@length. |
| * Returns 0 upon success and a negative error code upon failure. |
| */ |
| int zbd_reset_wp(struct thread_data *td, struct fio_file *f, |
| uint64_t offset, uint64_t length) |
| { |
| int ret; |
| |
| if (td->io_ops && td->io_ops->reset_wp) |
| ret = td->io_ops->reset_wp(td, f, offset, length); |
| else |
| ret = blkzoned_reset_wp(td, f, offset, length); |
| if (ret < 0) { |
| td_verror(td, errno, "resetting wp failed"); |
| log_err("%s: resetting wp for %llu sectors at sector %llu failed (%d).\n", |
| f->file_name, (unsigned long long)length >> 9, |
| (unsigned long long)offset >> 9, errno); |
| } |
| |
| return ret; |
| } |
| |
| /** |
| * zbd_zone_idx - convert an offset into a zone number |
| * @f: file pointer. |
| * @offset: offset in bytes. If this offset is in the first zone_size bytes |
| * past the disk size then the index of the sentinel is returned. |
| */ |
| static uint32_t zbd_zone_idx(const struct fio_file *f, uint64_t offset) |
| { |
| uint32_t zone_idx; |
| |
| if (f->zbd_info->zone_size_log2 > 0) |
| zone_idx = offset >> f->zbd_info->zone_size_log2; |
| else |
| zone_idx = offset / f->zbd_info->zone_size; |
| |
| return min(zone_idx, f->zbd_info->nr_zones); |
| } |
| |
| /** |
| * zbd_zone_end - Return zone end location |
| * @z: zone info pointer. |
| */ |
| static inline uint64_t zbd_zone_end(const struct fio_zone_info *z) |
| { |
| return (z+1)->start; |
| } |
| |
| /** |
| * zbd_zone_capacity_end - Return zone capacity limit end location |
| * @z: zone info pointer. |
| */ |
| static inline uint64_t zbd_zone_capacity_end(const struct fio_zone_info *z) |
| { |
| return z->start + z->capacity; |
| } |
| |
| /** |
| * zbd_zone_full - verify whether a minimum number of bytes remain in a zone |
| * @f: file pointer. |
| * @z: zone info pointer. |
| * @required: minimum number of bytes that must remain in a zone. |
| * |
| * The caller must hold z->mutex. |
| */ |
| static bool zbd_zone_full(const struct fio_file *f, struct fio_zone_info *z, |
| uint64_t required) |
| { |
| assert((required & 511) == 0); |
| |
| return z->has_wp && |
| z->wp + required > zbd_zone_capacity_end(z); |
| } |
| |
| static void zone_lock(struct thread_data *td, const struct fio_file *f, |
| struct fio_zone_info *z) |
| { |
| struct zoned_block_device_info *zbd = f->zbd_info; |
| uint32_t nz = z - zbd->zone_info; |
| |
| /* A thread should never lock zones outside its working area. */ |
| assert(f->min_zone <= nz && nz < f->max_zone); |
| |
| assert(z->has_wp); |
| |
| /* |
| * Lock the io_u target zone. The zone will be unlocked if io_u offset |
| * is changed or when io_u completes and zbd_put_io() executed. |
| * To avoid multiple jobs doing asynchronous I/Os from deadlocking each |
| * other waiting for zone locks when building an io_u batch, first |
| * only trylock the zone. If the zone is already locked by another job, |
| * process the currently queued I/Os so that I/O progress is made and |
| * zones unlocked. |
| */ |
| if (pthread_mutex_trylock(&z->mutex) != 0) { |
| if (!td_ioengine_flagged(td, FIO_SYNCIO)) |
| io_u_quiesce(td); |
| pthread_mutex_lock(&z->mutex); |
| } |
| } |
| |
| static inline void zone_unlock(struct fio_zone_info *z) |
| { |
| int ret; |
| |
| assert(z->has_wp); |
| ret = pthread_mutex_unlock(&z->mutex); |
| assert(!ret); |
| } |
| |
| static bool is_valid_offset(const struct fio_file *f, uint64_t offset) |
| { |
| return (uint64_t)(offset - f->file_offset) < f->io_size; |
| } |
| |
| static inline struct fio_zone_info *get_zone(const struct fio_file *f, |
| unsigned int zone_nr) |
| { |
| return &f->zbd_info->zone_info[zone_nr]; |
| } |
| |
| /* Verify whether direct I/O is used for all host-managed zoned drives. */ |
| static bool zbd_using_direct_io(void) |
| { |
| struct thread_data *td; |
| struct fio_file *f; |
| int i, j; |
| |
| for_each_td(td, i) { |
| if (td->o.odirect || !(td->o.td_ddir & TD_DDIR_WRITE)) |
| continue; |
| for_each_file(td, f, j) { |
| if (f->zbd_info && |
| f->zbd_info->model == ZBD_HOST_MANAGED) |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| /* Whether or not the I/O range for f includes one or more sequential zones */ |
| static bool zbd_is_seq_job(struct fio_file *f) |
| { |
| uint32_t zone_idx, zone_idx_b, zone_idx_e; |
| |
| assert(f->zbd_info); |
| if (f->io_size == 0) |
| return false; |
| zone_idx_b = zbd_zone_idx(f, f->file_offset); |
| zone_idx_e = zbd_zone_idx(f, f->file_offset + f->io_size - 1); |
| for (zone_idx = zone_idx_b; zone_idx <= zone_idx_e; zone_idx++) |
| if (get_zone(f, zone_idx)->has_wp) |
| return true; |
| |
| return false; |
| } |
| |
| /* |
| * Verify whether offset and size parameters are aligned with zone boundaries. |
| */ |
| static bool zbd_verify_sizes(void) |
| { |
| const struct fio_zone_info *z; |
| struct thread_data *td; |
| struct fio_file *f; |
| uint64_t new_offset, new_end; |
| uint32_t zone_idx; |
| int i, j; |
| |
| for_each_td(td, i) { |
| for_each_file(td, f, j) { |
| if (!f->zbd_info) |
| continue; |
| if (f->file_offset >= f->real_file_size) |
| continue; |
| if (!zbd_is_seq_job(f)) |
| continue; |
| |
| if (!td->o.zone_size) { |
| td->o.zone_size = f->zbd_info->zone_size; |
| if (!td->o.zone_size) { |
| log_err("%s: invalid 0 zone size\n", |
| f->file_name); |
| return false; |
| } |
| } else if (td->o.zone_size != f->zbd_info->zone_size) { |
| log_err("%s: job parameter zonesize %llu does not match disk zone size %llu.\n", |
| f->file_name, (unsigned long long) td->o.zone_size, |
| (unsigned long long) f->zbd_info->zone_size); |
| return false; |
| } |
| |
| if (td->o.zone_skip % td->o.zone_size) { |
| log_err("%s: zoneskip %llu is not a multiple of the device zone size %llu.\n", |
| f->file_name, (unsigned long long) td->o.zone_skip, |
| (unsigned long long) td->o.zone_size); |
| return false; |
| } |
| |
| zone_idx = zbd_zone_idx(f, f->file_offset); |
| z = get_zone(f, zone_idx); |
| if ((f->file_offset != z->start) && |
| (td->o.td_ddir != TD_DDIR_READ)) { |
| new_offset = zbd_zone_end(z); |
| if (new_offset >= f->file_offset + f->io_size) { |
| log_info("%s: io_size must be at least one zone\n", |
| f->file_name); |
| return false; |
| } |
| log_info("%s: rounded up offset from %llu to %llu\n", |
| f->file_name, (unsigned long long) f->file_offset, |
| (unsigned long long) new_offset); |
| f->io_size -= (new_offset - f->file_offset); |
| f->file_offset = new_offset; |
| } |
| zone_idx = zbd_zone_idx(f, f->file_offset + f->io_size); |
| z = get_zone(f, zone_idx); |
| new_end = z->start; |
| if ((td->o.td_ddir != TD_DDIR_READ) && |
| (f->file_offset + f->io_size != new_end)) { |
| if (new_end <= f->file_offset) { |
| log_info("%s: io_size must be at least one zone\n", |
| f->file_name); |
| return false; |
| } |
| log_info("%s: rounded down io_size from %llu to %llu\n", |
| f->file_name, (unsigned long long) f->io_size, |
| (unsigned long long) new_end - f->file_offset); |
| f->io_size = new_end - f->file_offset; |
| } |
| } |
| } |
| |
| return true; |
| } |
| |
| static bool zbd_verify_bs(void) |
| { |
| struct thread_data *td; |
| struct fio_file *f; |
| int i, j, k; |
| |
| for_each_td(td, i) { |
| for_each_file(td, f, j) { |
| uint64_t zone_size; |
| |
| if (!f->zbd_info) |
| continue; |
| zone_size = f->zbd_info->zone_size; |
| for (k = 0; k < FIO_ARRAY_SIZE(td->o.bs); k++) { |
| if (td->o.verify != VERIFY_NONE && |
| zone_size % td->o.bs[k] != 0) { |
| log_info("%s: block size %llu is not a divisor of the zone size %llu\n", |
| f->file_name, td->o.bs[k], |
| (unsigned long long)zone_size); |
| return false; |
| } |
| } |
| } |
| } |
| return true; |
| } |
| |
| static int ilog2(uint64_t i) |
| { |
| int log = -1; |
| |
| while (i) { |
| i >>= 1; |
| log++; |
| } |
| return log; |
| } |
| |
| /* |
| * Initialize f->zbd_info for devices that are not zoned block devices. This |
| * allows to execute a ZBD workload against a non-ZBD device. |
| */ |
| static int init_zone_info(struct thread_data *td, struct fio_file *f) |
| { |
| uint32_t nr_zones; |
| struct fio_zone_info *p; |
| uint64_t zone_size = td->o.zone_size; |
| uint64_t zone_capacity = td->o.zone_capacity; |
| struct zoned_block_device_info *zbd_info = NULL; |
| int i; |
| |
| if (zone_size == 0) { |
| log_err("%s: Specifying the zone size is mandatory for regular block devices with --zonemode=zbd\n\n", |
| f->file_name); |
| return 1; |
| } |
| |
| if (zone_size < 512) { |
| log_err("%s: zone size must be at least 512 bytes for --zonemode=zbd\n\n", |
| f->file_name); |
| return 1; |
| } |
| |
| if (zone_capacity == 0) |
| zone_capacity = zone_size; |
| |
| if (zone_capacity > zone_size) { |
| log_err("%s: job parameter zonecapacity %llu is larger than zone size %llu\n", |
| f->file_name, (unsigned long long) td->o.zone_capacity, |
| (unsigned long long) td->o.zone_size); |
| return 1; |
| } |
| |
| nr_zones = (f->real_file_size + zone_size - 1) / zone_size; |
| zbd_info = scalloc(1, sizeof(*zbd_info) + |
| (nr_zones + 1) * sizeof(zbd_info->zone_info[0])); |
| if (!zbd_info) |
| return -ENOMEM; |
| |
| mutex_init_pshared(&zbd_info->mutex); |
| zbd_info->refcount = 1; |
| p = &zbd_info->zone_info[0]; |
| for (i = 0; i < nr_zones; i++, p++) { |
| mutex_init_pshared_with_type(&p->mutex, |
| PTHREAD_MUTEX_RECURSIVE); |
| p->start = i * zone_size; |
| p->wp = p->start; |
| p->type = ZBD_ZONE_TYPE_SWR; |
| p->cond = ZBD_ZONE_COND_EMPTY; |
| p->capacity = zone_capacity; |
| p->has_wp = 1; |
| } |
| /* a sentinel */ |
| p->start = nr_zones * zone_size; |
| |
| f->zbd_info = zbd_info; |
| f->zbd_info->zone_size = zone_size; |
| f->zbd_info->zone_size_log2 = is_power_of_2(zone_size) ? |
| ilog2(zone_size) : 0; |
| f->zbd_info->nr_zones = nr_zones; |
| return 0; |
| } |
| |
| /* |
| * Maximum number of zones to report in one operation. |
| */ |
| #define ZBD_REPORT_MAX_ZONES 8192U |
| |
| /* |
| * Parse the device zone report and store it in f->zbd_info. Must be called |
| * only for devices that are zoned, namely those with a model != ZBD_NONE. |
| */ |
| static int parse_zone_info(struct thread_data *td, struct fio_file *f) |
| { |
| int nr_zones, nrz; |
| struct zbd_zone *zones, *z; |
| struct fio_zone_info *p; |
| uint64_t zone_size, offset; |
| struct zoned_block_device_info *zbd_info = NULL; |
| int i, j, ret = -ENOMEM; |
| |
| zones = calloc(ZBD_REPORT_MAX_ZONES, sizeof(struct zbd_zone)); |
| if (!zones) |
| goto out; |
| |
| nrz = zbd_report_zones(td, f, 0, zones, ZBD_REPORT_MAX_ZONES); |
| if (nrz < 0) { |
| ret = nrz; |
| log_info("fio: report zones (offset 0) failed for %s (%d).\n", |
| f->file_name, -ret); |
| goto out; |
| } |
| |
| zone_size = zones[0].len; |
| nr_zones = (f->real_file_size + zone_size - 1) / zone_size; |
| |
| if (td->o.zone_size == 0) { |
| td->o.zone_size = zone_size; |
| } else if (td->o.zone_size != zone_size) { |
| log_err("fio: %s job parameter zonesize %llu does not match disk zone size %llu.\n", |
| f->file_name, (unsigned long long) td->o.zone_size, |
| (unsigned long long) zone_size); |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| dprint(FD_ZBD, "Device %s has %d zones of size %llu KB\n", f->file_name, |
| nr_zones, (unsigned long long) zone_size / 1024); |
| |
| zbd_info = scalloc(1, sizeof(*zbd_info) + |
| (nr_zones + 1) * sizeof(zbd_info->zone_info[0])); |
| if (!zbd_info) |
| goto out; |
| mutex_init_pshared(&zbd_info->mutex); |
| zbd_info->refcount = 1; |
| p = &zbd_info->zone_info[0]; |
| for (offset = 0, j = 0; j < nr_zones;) { |
| z = &zones[0]; |
| for (i = 0; i < nrz; i++, j++, z++, p++) { |
| mutex_init_pshared_with_type(&p->mutex, |
| PTHREAD_MUTEX_RECURSIVE); |
| p->start = z->start; |
| p->capacity = z->capacity; |
| switch (z->cond) { |
| case ZBD_ZONE_COND_NOT_WP: |
| case ZBD_ZONE_COND_FULL: |
| p->wp = p->start + p->capacity; |
| break; |
| default: |
| assert(z->start <= z->wp); |
| assert(z->wp <= z->start + zone_size); |
| p->wp = z->wp; |
| break; |
| } |
| |
| switch (z->type) { |
| case ZBD_ZONE_TYPE_SWR: |
| p->has_wp = 1; |
| break; |
| default: |
| p->has_wp = 0; |
| } |
| p->type = z->type; |
| p->cond = z->cond; |
| |
| if (j > 0 && p->start != p[-1].start + zone_size) { |
| log_info("%s: invalid zone data\n", |
| f->file_name); |
| ret = -EINVAL; |
| goto out; |
| } |
| } |
| z--; |
| offset = z->start + z->len; |
| if (j >= nr_zones) |
| break; |
| nrz = zbd_report_zones(td, f, offset, zones, |
| min((uint32_t)(nr_zones - j), |
| ZBD_REPORT_MAX_ZONES)); |
| if (nrz < 0) { |
| ret = nrz; |
| log_info("fio: report zones (offset %llu) failed for %s (%d).\n", |
| (unsigned long long)offset, |
| f->file_name, -ret); |
| goto out; |
| } |
| } |
| |
| /* a sentinel */ |
| zbd_info->zone_info[nr_zones].start = offset; |
| |
| f->zbd_info = zbd_info; |
| f->zbd_info->zone_size = zone_size; |
| f->zbd_info->zone_size_log2 = is_power_of_2(zone_size) ? |
| ilog2(zone_size) : 0; |
| f->zbd_info->nr_zones = nr_zones; |
| zbd_info = NULL; |
| ret = 0; |
| |
| out: |
| sfree(zbd_info); |
| free(zones); |
| return ret; |
| } |
| |
| /* |
| * Allocate zone information and store it into f->zbd_info if zonemode=zbd. |
| * |
| * Returns 0 upon success and a negative error code upon failure. |
| */ |
| static int zbd_create_zone_info(struct thread_data *td, struct fio_file *f) |
| { |
| enum zbd_zoned_model zbd_model; |
| int ret; |
| |
| assert(td->o.zone_mode == ZONE_MODE_ZBD); |
| |
| ret = zbd_get_zoned_model(td, f, &zbd_model); |
| if (ret) |
| return ret; |
| |
| switch (zbd_model) { |
| case ZBD_IGNORE: |
| return 0; |
| case ZBD_HOST_AWARE: |
| case ZBD_HOST_MANAGED: |
| ret = parse_zone_info(td, f); |
| break; |
| case ZBD_NONE: |
| ret = init_zone_info(td, f); |
| break; |
| default: |
| td_verror(td, EINVAL, "Unsupported zoned model"); |
| log_err("Unsupported zoned model\n"); |
| return -EINVAL; |
| } |
| |
| if (ret == 0) { |
| f->zbd_info->model = zbd_model; |
| f->zbd_info->max_open_zones = td->o.max_open_zones; |
| } |
| return ret; |
| } |
| |
| void zbd_free_zone_info(struct fio_file *f) |
| { |
| uint32_t refcount; |
| |
| assert(f->zbd_info); |
| |
| pthread_mutex_lock(&f->zbd_info->mutex); |
| refcount = --f->zbd_info->refcount; |
| pthread_mutex_unlock(&f->zbd_info->mutex); |
| |
| assert((int32_t)refcount >= 0); |
| if (refcount == 0) |
| sfree(f->zbd_info); |
| f->zbd_info = NULL; |
| } |
| |
| /* |
| * Initialize f->zbd_info. |
| * |
| * Returns 0 upon success and a negative error code upon failure. |
| * |
| * Note: this function can only work correctly if it is called before the first |
| * fio fork() call. |
| */ |
| static int zbd_init_zone_info(struct thread_data *td, struct fio_file *file) |
| { |
| struct thread_data *td2; |
| struct fio_file *f2; |
| int i, j, ret; |
| |
| for_each_td(td2, i) { |
| for_each_file(td2, f2, j) { |
| if (td2 == td && f2 == file) |
| continue; |
| if (!f2->zbd_info || |
| strcmp(f2->file_name, file->file_name) != 0) |
| continue; |
| file->zbd_info = f2->zbd_info; |
| file->zbd_info->refcount++; |
| return 0; |
| } |
| } |
| |
| ret = zbd_create_zone_info(td, file); |
| if (ret < 0) |
| td_verror(td, -ret, "zbd_create_zone_info() failed"); |
| return ret; |
| } |
| |
| static bool zbd_open_zone(struct thread_data *td, const struct fio_file *f, |
| uint32_t zone_idx); |
| static int zbd_reset_zone(struct thread_data *td, struct fio_file *f, |
| struct fio_zone_info *z); |
| |
| int zbd_init_files(struct thread_data *td) |
| { |
| struct fio_file *f; |
| int i; |
| |
| for_each_file(td, f, i) { |
| if (zbd_init_zone_info(td, f)) |
| return 1; |
| } |
| return 0; |
| } |
| |
| void zbd_recalc_options_with_zone_granularity(struct thread_data *td) |
| { |
| struct fio_file *f; |
| int i; |
| |
| for_each_file(td, f, i) { |
| struct zoned_block_device_info *zbd = f->zbd_info; |
| // zonemode=strided doesn't get per-file zone size. |
| uint64_t zone_size = zbd ? zbd->zone_size : td->o.zone_size; |
| |
| if (zone_size == 0) |
| continue; |
| |
| if (td->o.size_nz > 0) { |
| td->o.size = td->o.size_nz * zone_size; |
| } |
| if (td->o.io_size_nz > 0) { |
| td->o.io_size = td->o.io_size_nz * zone_size; |
| } |
| if (td->o.start_offset_nz > 0) { |
| td->o.start_offset = td->o.start_offset_nz * zone_size; |
| } |
| if (td->o.offset_increment_nz > 0) { |
| td->o.offset_increment = td->o.offset_increment_nz * zone_size; |
| } |
| if (td->o.zone_skip_nz > 0) { |
| td->o.zone_skip = td->o.zone_skip_nz * zone_size; |
| } |
| } |
| } |
| |
| int zbd_setup_files(struct thread_data *td) |
| { |
| struct fio_file *f; |
| int i; |
| |
| if (!zbd_using_direct_io()) { |
| log_err("Using direct I/O is mandatory for writing to ZBD drives\n\n"); |
| return 1; |
| } |
| |
| if (!zbd_verify_sizes()) |
| return 1; |
| |
| if (!zbd_verify_bs()) |
| return 1; |
| |
| for_each_file(td, f, i) { |
| struct zoned_block_device_info *zbd = f->zbd_info; |
| struct fio_zone_info *z; |
| int zi; |
| |
| if (!zbd) |
| continue; |
| |
| f->min_zone = zbd_zone_idx(f, f->file_offset); |
| f->max_zone = zbd_zone_idx(f, f->file_offset + f->io_size); |
| |
| /* |
| * When all zones in the I/O range are conventional, io_size |
| * can be smaller than zone size, making min_zone the same |
| * as max_zone. This is why the assert below needs to be made |
| * conditional. |
| */ |
| if (zbd_is_seq_job(f)) |
| assert(f->min_zone < f->max_zone); |
| |
| zbd->max_open_zones = zbd->max_open_zones ?: ZBD_MAX_OPEN_ZONES; |
| |
| if (td->o.max_open_zones > 0 && |
| zbd->max_open_zones != td->o.max_open_zones) { |
| log_err("Different 'max_open_zones' values\n"); |
| return 1; |
| } |
| if (zbd->max_open_zones > ZBD_MAX_OPEN_ZONES) { |
| log_err("'max_open_zones' value is limited by %u\n", ZBD_MAX_OPEN_ZONES); |
| return 1; |
| } |
| |
| for (zi = f->min_zone; zi < f->max_zone; zi++) { |
| z = &zbd->zone_info[zi]; |
| if (z->cond != ZBD_ZONE_COND_IMP_OPEN && |
| z->cond != ZBD_ZONE_COND_EXP_OPEN) |
| continue; |
| if (zbd_open_zone(td, f, zi)) |
| continue; |
| /* |
| * If the number of open zones exceeds specified limits, |
| * reset all extra open zones. |
| */ |
| if (zbd_reset_zone(td, f, z) < 0) { |
| log_err("Failed to reest zone %d\n", zi); |
| return 1; |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| static inline unsigned int zbd_zone_nr(const struct fio_file *f, |
| struct fio_zone_info *zone) |
| { |
| return zone - f->zbd_info->zone_info; |
| } |
| |
| /** |
| * zbd_reset_zone - reset the write pointer of a single zone |
| * @td: FIO thread data. |
| * @f: FIO file associated with the disk for which to reset a write pointer. |
| * @z: Zone to reset. |
| * |
| * Returns 0 upon success and a negative error code upon failure. |
| * |
| * The caller must hold z->mutex. |
| */ |
| static int zbd_reset_zone(struct thread_data *td, struct fio_file *f, |
| struct fio_zone_info *z) |
| { |
| uint64_t offset = z->start; |
| uint64_t length = (z+1)->start - offset; |
| uint64_t data_in_zone = z->wp - z->start; |
| int ret = 0; |
| |
| if (!data_in_zone) |
| return 0; |
| |
| assert(is_valid_offset(f, offset + length - 1)); |
| |
| dprint(FD_ZBD, "%s: resetting wp of zone %u.\n", f->file_name, |
| zbd_zone_nr(f, z)); |
| switch (f->zbd_info->model) { |
| case ZBD_HOST_AWARE: |
| case ZBD_HOST_MANAGED: |
| ret = zbd_reset_wp(td, f, offset, length); |
| if (ret < 0) |
| return ret; |
| break; |
| default: |
| break; |
| } |
| |
| pthread_mutex_lock(&f->zbd_info->mutex); |
| f->zbd_info->sectors_with_data -= data_in_zone; |
| f->zbd_info->wp_sectors_with_data -= data_in_zone; |
| pthread_mutex_unlock(&f->zbd_info->mutex); |
| z->wp = z->start; |
| z->verify_block = 0; |
| |
| td->ts.nr_zone_resets++; |
| |
| return ret; |
| } |
| |
| /* The caller must hold f->zbd_info->mutex */ |
| static void zbd_close_zone(struct thread_data *td, const struct fio_file *f, |
| unsigned int zone_idx) |
| { |
| uint32_t open_zone_idx = 0; |
| |
| for (; open_zone_idx < f->zbd_info->num_open_zones; open_zone_idx++) { |
| if (f->zbd_info->open_zones[open_zone_idx] == zone_idx) |
| break; |
| } |
| if (open_zone_idx == f->zbd_info->num_open_zones) |
| return; |
| |
| dprint(FD_ZBD, "%s: closing zone %d\n", f->file_name, zone_idx); |
| memmove(f->zbd_info->open_zones + open_zone_idx, |
| f->zbd_info->open_zones + open_zone_idx + 1, |
| (ZBD_MAX_OPEN_ZONES - (open_zone_idx + 1)) * |
| sizeof(f->zbd_info->open_zones[0])); |
| f->zbd_info->num_open_zones--; |
| td->num_open_zones--; |
| get_zone(f, zone_idx)->open = 0; |
| } |
| |
| /* |
| * Reset a range of zones. Returns 0 upon success and 1 upon failure. |
| * @td: fio thread data. |
| * @f: fio file for which to reset zones |
| * @zb: first zone to reset. |
| * @ze: first zone not to reset. |
| */ |
| static int zbd_reset_zones(struct thread_data *td, struct fio_file *f, |
| struct fio_zone_info *const zb, |
| struct fio_zone_info *const ze) |
| { |
| struct fio_zone_info *z; |
| const uint32_t min_bs = td->o.min_bs[DDIR_WRITE]; |
| int res = 0; |
| |
| assert(min_bs); |
| |
| dprint(FD_ZBD, "%s: examining zones %u .. %u\n", f->file_name, |
| zbd_zone_nr(f, zb), zbd_zone_nr(f, ze)); |
| for (z = zb; z < ze; z++) { |
| uint32_t nz = zbd_zone_nr(f, z); |
| |
| if (!z->has_wp) |
| continue; |
| zone_lock(td, f, z); |
| pthread_mutex_lock(&f->zbd_info->mutex); |
| zbd_close_zone(td, f, nz); |
| pthread_mutex_unlock(&f->zbd_info->mutex); |
| if (z->wp != z->start) { |
| dprint(FD_ZBD, "%s: resetting zone %u\n", |
| f->file_name, zbd_zone_nr(f, z)); |
| if (zbd_reset_zone(td, f, z) < 0) |
| res = 1; |
| } |
| zone_unlock(z); |
| } |
| |
| return res; |
| } |
| |
| /* |
| * Reset zbd_info.write_cnt, the counter that counts down towards the next |
| * zone reset. |
| */ |
| static void _zbd_reset_write_cnt(const struct thread_data *td, |
| const struct fio_file *f) |
| { |
| assert(0 <= td->o.zrf.u.f && td->o.zrf.u.f <= 1); |
| |
| f->zbd_info->write_cnt = td->o.zrf.u.f ? |
| min(1.0 / td->o.zrf.u.f, 0.0 + UINT_MAX) : UINT_MAX; |
| } |
| |
| static void zbd_reset_write_cnt(const struct thread_data *td, |
| const struct fio_file *f) |
| { |
| pthread_mutex_lock(&f->zbd_info->mutex); |
| _zbd_reset_write_cnt(td, f); |
| pthread_mutex_unlock(&f->zbd_info->mutex); |
| } |
| |
| static bool zbd_dec_and_reset_write_cnt(const struct thread_data *td, |
| const struct fio_file *f) |
| { |
| uint32_t write_cnt = 0; |
| |
| pthread_mutex_lock(&f->zbd_info->mutex); |
| assert(f->zbd_info->write_cnt); |
| if (f->zbd_info->write_cnt) |
| write_cnt = --f->zbd_info->write_cnt; |
| if (write_cnt == 0) |
| _zbd_reset_write_cnt(td, f); |
| pthread_mutex_unlock(&f->zbd_info->mutex); |
| |
| return write_cnt == 0; |
| } |
| |
| enum swd_action { |
| CHECK_SWD, |
| SET_SWD, |
| }; |
| |
| /* Calculate the number of sectors with data (swd) and perform action 'a' */ |
| static uint64_t zbd_process_swd(struct thread_data *td, |
| const struct fio_file *f, enum swd_action a) |
| { |
| struct fio_zone_info *zb, *ze, *z; |
| uint64_t swd = 0; |
| uint64_t wp_swd = 0; |
| |
| zb = get_zone(f, f->min_zone); |
| ze = get_zone(f, f->max_zone); |
| for (z = zb; z < ze; z++) { |
| if (z->has_wp) { |
| zone_lock(td, f, z); |
| wp_swd += z->wp - z->start; |
| } |
| swd += z->wp - z->start; |
| } |
| pthread_mutex_lock(&f->zbd_info->mutex); |
| switch (a) { |
| case CHECK_SWD: |
| assert(f->zbd_info->sectors_with_data == swd); |
| assert(f->zbd_info->wp_sectors_with_data == wp_swd); |
| break; |
| case SET_SWD: |
| f->zbd_info->sectors_with_data = swd; |
| f->zbd_info->wp_sectors_with_data = wp_swd; |
| break; |
| } |
| pthread_mutex_unlock(&f->zbd_info->mutex); |
| for (z = zb; z < ze; z++) |
| if (z->has_wp) |
| zone_unlock(z); |
| |
| return swd; |
| } |
| |
| /* |
| * The swd check is useful for debugging but takes too much time to leave |
| * it enabled all the time. Hence it is disabled by default. |
| */ |
| static const bool enable_check_swd = false; |
| |
| /* Check whether the values of zbd_info.*sectors_with_data are correct. */ |
| static void zbd_check_swd(struct thread_data *td, const struct fio_file *f) |
| { |
| if (!enable_check_swd) |
| return; |
| |
| zbd_process_swd(td, f, CHECK_SWD); |
| } |
| |
| void zbd_file_reset(struct thread_data *td, struct fio_file *f) |
| { |
| struct fio_zone_info *zb, *ze; |
| uint64_t swd; |
| |
| if (!f->zbd_info || !td_write(td)) |
| return; |
| |
| zb = get_zone(f, f->min_zone); |
| ze = get_zone(f, f->max_zone); |
| swd = zbd_process_swd(td, f, SET_SWD); |
| dprint(FD_ZBD, "%s(%s): swd = %" PRIu64 "\n", __func__, f->file_name, |
| swd); |
| /* |
| * If data verification is enabled reset the affected zones before |
| * writing any data to avoid that a zone reset has to be issued while |
| * writing data, which causes data loss. |
| */ |
| if (td->o.verify != VERIFY_NONE && td->runstate != TD_VERIFYING) |
| zbd_reset_zones(td, f, zb, ze); |
| zbd_reset_write_cnt(td, f); |
| } |
| |
| /* The caller must hold f->zbd_info->mutex. */ |
| static bool is_zone_open(const struct thread_data *td, const struct fio_file *f, |
| unsigned int zone_idx) |
| { |
| struct zoned_block_device_info *zbdi = f->zbd_info; |
| int i; |
| |
| assert(td->o.job_max_open_zones == 0 || td->num_open_zones <= td->o.job_max_open_zones); |
| assert(td->o.job_max_open_zones <= zbdi->max_open_zones); |
| assert(zbdi->num_open_zones <= zbdi->max_open_zones); |
| |
| for (i = 0; i < zbdi->num_open_zones; i++) |
| if (zbdi->open_zones[i] == zone_idx) |
| return true; |
| |
| return false; |
| } |
| |
| /* |
| * Open a ZBD zone if it was not yet open. Returns true if either the zone was |
| * already open or if opening a new zone is allowed. Returns false if the zone |
| * was not yet open and opening a new zone would cause the zone limit to be |
| * exceeded. |
| */ |
| static bool zbd_open_zone(struct thread_data *td, const struct fio_file *f, |
| uint32_t zone_idx) |
| { |
| const uint32_t min_bs = td->o.min_bs[DDIR_WRITE]; |
| struct fio_zone_info *z = get_zone(f, zone_idx); |
| bool res = true; |
| |
| if (z->cond == ZBD_ZONE_COND_OFFLINE) |
| return false; |
| |
| /* |
| * Skip full zones with data verification enabled because resetting a |
| * zone causes data loss and hence causes verification to fail. |
| */ |
| if (td->o.verify != VERIFY_NONE && zbd_zone_full(f, z, min_bs)) |
| return false; |
| |
| pthread_mutex_lock(&f->zbd_info->mutex); |
| if (is_zone_open(td, f, zone_idx)) { |
| /* |
| * If the zone is already open and going to be full by writes |
| * in-flight, handle it as a full zone instead of an open zone. |
| */ |
| if (z->wp >= zbd_zone_capacity_end(z)) |
| res = false; |
| goto out; |
| } |
| res = false; |
| /* Zero means no limit */ |
| if (td->o.job_max_open_zones > 0 && |
| td->num_open_zones >= td->o.job_max_open_zones) |
| goto out; |
| if (f->zbd_info->num_open_zones >= f->zbd_info->max_open_zones) |
| goto out; |
| dprint(FD_ZBD, "%s: opening zone %d\n", f->file_name, zone_idx); |
| f->zbd_info->open_zones[f->zbd_info->num_open_zones++] = zone_idx; |
| td->num_open_zones++; |
| z->open = 1; |
| res = true; |
| |
| out: |
| pthread_mutex_unlock(&f->zbd_info->mutex); |
| return res; |
| } |
| |
| /* Anything goes as long as it is not a constant. */ |
| static uint32_t pick_random_zone_idx(const struct fio_file *f, |
| const struct io_u *io_u) |
| { |
| return io_u->offset * f->zbd_info->num_open_zones / f->real_file_size; |
| } |
| |
| /* |
| * Modify the offset of an I/O unit that does not refer to an open zone such |
| * that it refers to an open zone. Close an open zone and open a new zone if |
| * necessary. The open zone is searched across sequential zones. |
| * This algorithm can only work correctly if all write pointers are |
| * a multiple of the fio block size. The caller must neither hold z->mutex |
| * nor f->zbd_info->mutex. Returns with z->mutex held upon success. |
| */ |
| static struct fio_zone_info *zbd_convert_to_open_zone(struct thread_data *td, |
| struct io_u *io_u) |
| { |
| const uint32_t min_bs = td->o.min_bs[io_u->ddir]; |
| struct fio_file *f = io_u->file; |
| struct fio_zone_info *z; |
| unsigned int open_zone_idx = -1; |
| uint32_t zone_idx, new_zone_idx; |
| int i; |
| bool wait_zone_close; |
| |
| assert(is_valid_offset(f, io_u->offset)); |
| |
| if (td->o.max_open_zones || td->o.job_max_open_zones) { |
| /* |
| * This statement accesses f->zbd_info->open_zones[] on purpose |
| * without locking. |
| */ |
| zone_idx = f->zbd_info->open_zones[pick_random_zone_idx(f, io_u)]; |
| } else { |
| zone_idx = zbd_zone_idx(f, io_u->offset); |
| } |
| if (zone_idx < f->min_zone) |
| zone_idx = f->min_zone; |
| else if (zone_idx >= f->max_zone) |
| zone_idx = f->max_zone - 1; |
| dprint(FD_ZBD, "%s(%s): starting from zone %d (offset %lld, buflen %lld)\n", |
| __func__, f->file_name, zone_idx, io_u->offset, io_u->buflen); |
| |
| /* |
| * Since z->mutex is the outer lock and f->zbd_info->mutex the inner |
| * lock it can happen that the state of the zone with index zone_idx |
| * has changed after 'z' has been assigned and before f->zbd_info->mutex |
| * has been obtained. Hence the loop. |
| */ |
| for (;;) { |
| uint32_t tmp_idx; |
| |
| z = get_zone(f, zone_idx); |
| if (z->has_wp) |
| zone_lock(td, f, z); |
| pthread_mutex_lock(&f->zbd_info->mutex); |
| if (z->has_wp) { |
| if (z->cond != ZBD_ZONE_COND_OFFLINE && |
| td->o.max_open_zones == 0 && td->o.job_max_open_zones == 0) |
| goto examine_zone; |
| if (f->zbd_info->num_open_zones == 0) { |
| dprint(FD_ZBD, "%s(%s): no zones are open\n", |
| __func__, f->file_name); |
| goto open_other_zone; |
| } |
| } |
| |
| /* |
| * List of opened zones is per-device, shared across all threads. |
| * Start with quasi-random candidate zone. |
| * Ignore zones which don't belong to thread's offset/size area. |
| */ |
| open_zone_idx = pick_random_zone_idx(f, io_u); |
| assert(!open_zone_idx || |
| open_zone_idx < f->zbd_info->num_open_zones); |
| tmp_idx = open_zone_idx; |
| for (i = 0; i < f->zbd_info->num_open_zones; i++) { |
| uint32_t tmpz; |
| |
| if (tmp_idx >= f->zbd_info->num_open_zones) |
| tmp_idx = 0; |
| tmpz = f->zbd_info->open_zones[tmp_idx]; |
| if (f->min_zone <= tmpz && tmpz < f->max_zone) { |
| open_zone_idx = tmp_idx; |
| goto found_candidate_zone; |
| } |
| |
| tmp_idx++; |
| } |
| |
| dprint(FD_ZBD, "%s(%s): no candidate zone\n", |
| __func__, f->file_name); |
| pthread_mutex_unlock(&f->zbd_info->mutex); |
| if (z->has_wp) |
| zone_unlock(z); |
| return NULL; |
| |
| found_candidate_zone: |
| new_zone_idx = f->zbd_info->open_zones[open_zone_idx]; |
| if (new_zone_idx == zone_idx) |
| break; |
| zone_idx = new_zone_idx; |
| pthread_mutex_unlock(&f->zbd_info->mutex); |
| if (z->has_wp) |
| zone_unlock(z); |
| } |
| |
| /* Both z->mutex and f->zbd_info->mutex are held. */ |
| |
| examine_zone: |
| if (z->wp + min_bs <= zbd_zone_capacity_end(z)) { |
| pthread_mutex_unlock(&f->zbd_info->mutex); |
| goto out; |
| } |
| |
| open_other_zone: |
| /* Check if number of open zones reaches one of limits. */ |
| wait_zone_close = |
| f->zbd_info->num_open_zones == f->max_zone - f->min_zone || |
| (td->o.max_open_zones && |
| f->zbd_info->num_open_zones == td->o.max_open_zones) || |
| (td->o.job_max_open_zones && |
| td->num_open_zones == td->o.job_max_open_zones); |
| |
| pthread_mutex_unlock(&f->zbd_info->mutex); |
| |
| /* Only z->mutex is held. */ |
| |
| /* |
| * When number of open zones reaches to one of limits, wait for |
| * zone close before opening a new zone. |
| */ |
| if (wait_zone_close) { |
| dprint(FD_ZBD, "%s(%s): quiesce to allow open zones to close\n", |
| __func__, f->file_name); |
| io_u_quiesce(td); |
| } |
| |
| /* Zone 'z' is full, so try to open a new zone. */ |
| for (i = f->io_size / f->zbd_info->zone_size; i > 0; i--) { |
| zone_idx++; |
| if (z->has_wp) |
| zone_unlock(z); |
| z++; |
| if (!is_valid_offset(f, z->start)) { |
| /* Wrap-around. */ |
| zone_idx = f->min_zone; |
| z = get_zone(f, zone_idx); |
| } |
| assert(is_valid_offset(f, z->start)); |
| if (!z->has_wp) |
| continue; |
| zone_lock(td, f, z); |
| if (z->open) |
| continue; |
| if (zbd_open_zone(td, f, zone_idx)) |
| goto out; |
| } |
| |
| /* Only z->mutex is held. */ |
| |
| /* Check whether the write fits in any of the already opened zones. */ |
| pthread_mutex_lock(&f->zbd_info->mutex); |
| for (i = 0; i < f->zbd_info->num_open_zones; i++) { |
| zone_idx = f->zbd_info->open_zones[i]; |
| if (zone_idx < f->min_zone || zone_idx >= f->max_zone) |
| continue; |
| pthread_mutex_unlock(&f->zbd_info->mutex); |
| zone_unlock(z); |
| |
| z = get_zone(f, zone_idx); |
| |
| zone_lock(td, f, z); |
| if (z->wp + min_bs <= zbd_zone_capacity_end(z)) |
| goto out; |
| pthread_mutex_lock(&f->zbd_info->mutex); |
| } |
| pthread_mutex_unlock(&f->zbd_info->mutex); |
| zone_unlock(z); |
| dprint(FD_ZBD, "%s(%s): did not open another zone\n", __func__, |
| f->file_name); |
| return NULL; |
| |
| out: |
| dprint(FD_ZBD, "%s(%s): returning zone %d\n", __func__, f->file_name, |
| zone_idx); |
| io_u->offset = z->start; |
| assert(z->has_wp); |
| assert(z->cond != ZBD_ZONE_COND_OFFLINE); |
| return z; |
| } |
| |
| /* The caller must hold z->mutex. */ |
| static struct fio_zone_info *zbd_replay_write_order(struct thread_data *td, |
| struct io_u *io_u, |
| struct fio_zone_info *z) |
| { |
| const struct fio_file *f = io_u->file; |
| const uint32_t min_bs = td->o.min_bs[DDIR_WRITE]; |
| |
| if (!zbd_open_zone(td, f, zbd_zone_nr(f, z))) { |
| zone_unlock(z); |
| z = zbd_convert_to_open_zone(td, io_u); |
| assert(z); |
| } |
| |
| if (z->verify_block * min_bs >= z->capacity) { |
| log_err("%s: %d * %d >= %llu\n", f->file_name, z->verify_block, |
| min_bs, (unsigned long long)z->capacity); |
| /* |
| * If the assertion below fails during a test run, adding |
| * "--experimental_verify=1" to the command line may help. |
| */ |
| assert(false); |
| } |
| io_u->offset = z->start + z->verify_block * min_bs; |
| if (io_u->offset + io_u->buflen >= zbd_zone_capacity_end(z)) { |
| log_err("%s: %llu + %llu >= %llu\n", f->file_name, io_u->offset, |
| io_u->buflen, (unsigned long long) zbd_zone_capacity_end(z)); |
| assert(false); |
| } |
| z->verify_block += io_u->buflen / min_bs; |
| |
| return z; |
| } |
| |
| /* |
| * Find another zone for which @io_u fits in the readable data in the zone. |
| * Search in zones @zb + 1 .. @zl. For random workload, also search in zones |
| * @zb - 1 .. @zf. |
| * |
| * Either returns NULL or returns a zone pointer. When the zone has write |
| * pointer, hold the mutex for the zone. |
| */ |
| static struct fio_zone_info * |
| zbd_find_zone(struct thread_data *td, struct io_u *io_u, |
| struct fio_zone_info *zb, struct fio_zone_info *zl) |
| { |
| const uint32_t min_bs = td->o.min_bs[io_u->ddir]; |
| struct fio_file *f = io_u->file; |
| struct fio_zone_info *z1, *z2; |
| const struct fio_zone_info *const zf = get_zone(f, f->min_zone); |
| |
| /* |
| * Skip to the next non-empty zone in case of sequential I/O and to |
| * the nearest non-empty zone in case of random I/O. |
| */ |
| for (z1 = zb + 1, z2 = zb - 1; z1 < zl || z2 >= zf; z1++, z2--) { |
| if (z1 < zl && z1->cond != ZBD_ZONE_COND_OFFLINE) { |
| if (z1->has_wp) |
| zone_lock(td, f, z1); |
| if (z1->start + min_bs <= z1->wp) |
| return z1; |
| if (z1->has_wp) |
| zone_unlock(z1); |
| } else if (!td_random(td)) { |
| break; |
| } |
| if (td_random(td) && z2 >= zf && |
| z2->cond != ZBD_ZONE_COND_OFFLINE) { |
| if (z2->has_wp) |
| zone_lock(td, f, z2); |
| if (z2->start + min_bs <= z2->wp) |
| return z2; |
| if (z2->has_wp) |
| zone_unlock(z2); |
| } |
| } |
| dprint(FD_ZBD, "%s: adjusting random read offset failed\n", |
| f->file_name); |
| return NULL; |
| } |
| |
| /** |
| * zbd_end_zone_io - update zone status at command completion |
| * @io_u: I/O unit |
| * @z: zone info pointer |
| * |
| * If the write command made the zone full, close it. |
| * |
| * The caller must hold z->mutex. |
| */ |
| static void zbd_end_zone_io(struct thread_data *td, const struct io_u *io_u, |
| struct fio_zone_info *z) |
| { |
| const struct fio_file *f = io_u->file; |
| |
| if (io_u->ddir == DDIR_WRITE && |
| io_u->offset + io_u->buflen >= zbd_zone_capacity_end(z)) { |
| pthread_mutex_lock(&f->zbd_info->mutex); |
| zbd_close_zone(td, f, zbd_zone_nr(f, z)); |
| pthread_mutex_unlock(&f->zbd_info->mutex); |
| } |
| } |
| |
| /** |
| * zbd_queue_io - update the write pointer of a sequential zone |
| * @io_u: I/O unit |
| * @success: Whether or not the I/O unit has been queued successfully |
| * @q: queueing status (busy, completed or queued). |
| * |
| * For write and trim operations, update the write pointer of the I/O unit |
| * target zone. |
| */ |
| static void zbd_queue_io(struct thread_data *td, struct io_u *io_u, int q, |
| bool success) |
| { |
| const struct fio_file *f = io_u->file; |
| struct zoned_block_device_info *zbd_info = f->zbd_info; |
| struct fio_zone_info *z; |
| uint32_t zone_idx; |
| uint64_t zone_end; |
| |
| if (!zbd_info) |
| return; |
| |
| zone_idx = zbd_zone_idx(f, io_u->offset); |
| assert(zone_idx < zbd_info->nr_zones); |
| z = get_zone(f, zone_idx); |
| |
| assert(z->has_wp); |
| |
| if (!success) |
| goto unlock; |
| |
| dprint(FD_ZBD, |
| "%s: queued I/O (%lld, %llu) for zone %u\n", |
| f->file_name, io_u->offset, io_u->buflen, zone_idx); |
| |
| switch (io_u->ddir) { |
| case DDIR_WRITE: |
| zone_end = min((uint64_t)(io_u->offset + io_u->buflen), |
| zbd_zone_capacity_end(z)); |
| pthread_mutex_lock(&zbd_info->mutex); |
| /* |
| * z->wp > zone_end means that one or more I/O errors |
| * have occurred. |
| */ |
| if (z->wp <= zone_end) { |
| zbd_info->sectors_with_data += zone_end - z->wp; |
| zbd_info->wp_sectors_with_data += zone_end - z->wp; |
| } |
| pthread_mutex_unlock(&zbd_info->mutex); |
| z->wp = zone_end; |
| break; |
| case DDIR_TRIM: |
| assert(z->wp == z->start); |
| break; |
| default: |
| break; |
| } |
| |
| if (q == FIO_Q_COMPLETED && !io_u->error) |
| zbd_end_zone_io(td, io_u, z); |
| |
| unlock: |
| if (!success || q != FIO_Q_QUEUED) { |
| /* BUSY or COMPLETED: unlock the zone */ |
| zone_unlock(z); |
| io_u->zbd_put_io = NULL; |
| } |
| } |
| |
| /** |
| * zbd_put_io - Unlock an I/O unit target zone lock |
| * @io_u: I/O unit |
| */ |
| static void zbd_put_io(struct thread_data *td, const struct io_u *io_u) |
| { |
| const struct fio_file *f = io_u->file; |
| struct zoned_block_device_info *zbd_info = f->zbd_info; |
| struct fio_zone_info *z; |
| uint32_t zone_idx; |
| |
| if (!zbd_info) |
| return; |
| |
| zone_idx = zbd_zone_idx(f, io_u->offset); |
| assert(zone_idx < zbd_info->nr_zones); |
| z = get_zone(f, zone_idx); |
| |
| assert(z->has_wp); |
| |
| dprint(FD_ZBD, |
| "%s: terminate I/O (%lld, %llu) for zone %u\n", |
| f->file_name, io_u->offset, io_u->buflen, zone_idx); |
| |
| zbd_end_zone_io(td, io_u, z); |
| |
| zone_unlock(z); |
| zbd_check_swd(td, f); |
| } |
| |
| /* |
| * Windows and MacOS do not define this. |
| */ |
| #ifndef EREMOTEIO |
| #define EREMOTEIO 121 /* POSIX value */ |
| #endif |
| |
| bool zbd_unaligned_write(int error_code) |
| { |
| switch (error_code) { |
| case EIO: |
| case EREMOTEIO: |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * setup_zbd_zone_mode - handle zoneskip as necessary for ZBD drives |
| * @td: FIO thread data. |
| * @io_u: FIO I/O unit. |
| * |
| * For sequential workloads, change the file offset to skip zoneskip bytes when |
| * no more IO can be performed in the current zone. |
| * - For read workloads, zoneskip is applied when the io has reached the end of |
| * the zone or the zone write position (when td->o.read_beyond_wp is false). |
| * - For write workloads, zoneskip is applied when the zone is full. |
| * This applies only to read and write operations. |
| */ |
| void setup_zbd_zone_mode(struct thread_data *td, struct io_u *io_u) |
| { |
| struct fio_file *f = io_u->file; |
| enum fio_ddir ddir = io_u->ddir; |
| struct fio_zone_info *z; |
| uint32_t zone_idx; |
| |
| assert(td->o.zone_mode == ZONE_MODE_ZBD); |
| assert(td->o.zone_size); |
| |
| zone_idx = zbd_zone_idx(f, f->last_pos[ddir]); |
| z = get_zone(f, zone_idx); |
| |
| /* |
| * When the zone capacity is smaller than the zone size and the I/O is |
| * sequential write, skip to zone end if the latest position is at the |
| * zone capacity limit. |
| */ |
| if (z->capacity < f->zbd_info->zone_size && !td_random(td) && |
| ddir == DDIR_WRITE && |
| f->last_pos[ddir] >= zbd_zone_capacity_end(z)) { |
| dprint(FD_ZBD, |
| "%s: Jump from zone capacity limit to zone end:" |
| " (%llu -> %llu) for zone %u (%llu)\n", |
| f->file_name, (unsigned long long) f->last_pos[ddir], |
| (unsigned long long) zbd_zone_end(z), zone_idx, |
| (unsigned long long) z->capacity); |
| td->io_skip_bytes += zbd_zone_end(z) - f->last_pos[ddir]; |
| f->last_pos[ddir] = zbd_zone_end(z); |
| } |
| |
| /* |
| * zone_skip is valid only for sequential workloads. |
| */ |
| if (td_random(td) || !td->o.zone_skip) |
| return; |
| |
| /* |
| * It is time to switch to a new zone if: |
| * - zone_bytes == zone_size bytes have already been accessed |
| * - The last position reached the end of the current zone. |
| * - For reads with td->o.read_beyond_wp == false, the last position |
| * reached the zone write pointer. |
| */ |
| if (td->zone_bytes >= td->o.zone_size || |
| f->last_pos[ddir] >= zbd_zone_end(z) || |
| (ddir == DDIR_READ && |
| (!td->o.read_beyond_wp) && f->last_pos[ddir] >= z->wp)) { |
| /* |
| * Skip zones. |
| */ |
| td->zone_bytes = 0; |
| f->file_offset += td->o.zone_size + td->o.zone_skip; |
| |
| /* |
| * Wrap from the beginning, if we exceed the file size |
| */ |
| if (f->file_offset >= f->real_file_size) |
| f->file_offset = get_start_offset(td, f); |
| |
| f->last_pos[ddir] = f->file_offset; |
| td->io_skip_bytes += td->o.zone_skip; |
| } |
| } |
| |
| /** |
| * zbd_adjust_ddir - Adjust an I/O direction for zonemode=zbd. |
| * |
| * @td: FIO thread data. |
| * @io_u: FIO I/O unit. |
| * @ddir: I/O direction before adjustment. |
| * |
| * Return adjusted I/O direction. |
| */ |
| enum fio_ddir zbd_adjust_ddir(struct thread_data *td, struct io_u *io_u, |
| enum fio_ddir ddir) |
| { |
| /* |
| * In case read direction is chosen for the first random I/O, fio with |
| * zonemode=zbd stops because no data can be read from zoned block |
| * devices with all empty zones. Overwrite the first I/O direction as |
| * write to make sure data to read exists. |
| */ |
| if (ddir != DDIR_READ || !td_rw(td)) |
| return ddir; |
| |
| if (io_u->file->zbd_info->sectors_with_data || |
| td->o.read_beyond_wp) |
| return DDIR_READ; |
| |
| return DDIR_WRITE; |
| } |
| |
| /** |
| * zbd_adjust_block - adjust the offset and length as necessary for ZBD drives |
| * @td: FIO thread data. |
| * @io_u: FIO I/O unit. |
| * |
| * Locking strategy: returns with z->mutex locked if and only if z refers |
| * to a sequential zone and if io_u_accept is returned. z is the zone that |
| * corresponds to io_u->offset at the end of this function. |
| */ |
| enum io_u_action zbd_adjust_block(struct thread_data *td, struct io_u *io_u) |
| { |
| struct fio_file *f = io_u->file; |
| uint32_t zone_idx_b; |
| struct fio_zone_info *zb, *zl, *orig_zb; |
| uint32_t orig_len = io_u->buflen; |
| uint32_t min_bs = td->o.min_bs[io_u->ddir]; |
| uint64_t new_len; |
| int64_t range; |
| |
| if (!f->zbd_info) |
| return io_u_accept; |
| |
| assert(min_bs); |
| assert(is_valid_offset(f, io_u->offset)); |
| assert(io_u->buflen); |
| zone_idx_b = zbd_zone_idx(f, io_u->offset); |
| zb = get_zone(f, zone_idx_b); |
| orig_zb = zb; |
| |
| if (!zb->has_wp) { |
| /* Accept non-write I/Os for conventional zones. */ |
| if (io_u->ddir != DDIR_WRITE) |
| return io_u_accept; |
| /* |
| * Make sure that writes to conventional zones |
| * don't cross over to any sequential zones. |
| */ |
| if (!(zb + 1)->has_wp || |
| io_u->offset + io_u->buflen <= (zb + 1)->start) |
| return io_u_accept; |
| |
| if (io_u->offset + min_bs > (zb + 1)->start) { |
| dprint(FD_IO, |
| "%s: off=%llu + min_bs=%u > next zone %llu\n", |
| f->file_name, io_u->offset, |
| min_bs, (unsigned long long) (zb + 1)->start); |
| io_u->offset = zb->start + (zb + 1)->start - io_u->offset; |
| new_len = min(io_u->buflen, (zb + 1)->start - io_u->offset); |
| } else { |
| new_len = (zb + 1)->start - io_u->offset; |
| } |
| io_u->buflen = new_len / min_bs * min_bs; |
| return io_u_accept; |
| } |
| |
| /* |
| * Accept the I/O offset for reads if reading beyond the write pointer |
| * is enabled. |
| */ |
| if (zb->cond != ZBD_ZONE_COND_OFFLINE && |
| io_u->ddir == DDIR_READ && td->o.read_beyond_wp) |
| return io_u_accept; |
| |
| zbd_check_swd(td, f); |
| |
| zone_lock(td, f, zb); |
| |
| switch (io_u->ddir) { |
| case DDIR_READ: |
| if (td->runstate == TD_VERIFYING && td_write(td)) { |
| zb = zbd_replay_write_order(td, io_u, zb); |
| goto accept; |
| } |
| /* |
| * Check that there is enough written data in the zone to do an |
| * I/O of at least min_bs B. If there isn't, find a new zone for |
| * the I/O. |
| */ |
| range = zb->cond != ZBD_ZONE_COND_OFFLINE ? |
| zb->wp - zb->start : 0; |
| if (range < min_bs || |
| ((!td_random(td)) && (io_u->offset + min_bs > zb->wp))) { |
| zone_unlock(zb); |
| zl = get_zone(f, f->max_zone); |
| zb = zbd_find_zone(td, io_u, zb, zl); |
| if (!zb) { |
| dprint(FD_ZBD, |
| "%s: zbd_find_zone(%lld, %llu) failed\n", |
| f->file_name, io_u->offset, |
| io_u->buflen); |
| goto eof; |
| } |
| /* |
| * zbd_find_zone() returned a zone with a range of at |
| * least min_bs. |
| */ |
| range = zb->wp - zb->start; |
| assert(range >= min_bs); |
| |
| if (!td_random(td)) |
| io_u->offset = zb->start; |
| } |
| /* |
| * Make sure the I/O is within the zone valid data range while |
| * maximizing the I/O size and preserving randomness. |
| */ |
| if (range <= io_u->buflen) |
| io_u->offset = zb->start; |
| else if (td_random(td)) |
| io_u->offset = zb->start + |
| ((io_u->offset - orig_zb->start) % |
| (range - io_u->buflen)) / min_bs * min_bs; |
| /* |
| * When zbd_find_zone() returns a conventional zone, |
| * we can simply accept the new i/o offset here. |
| */ |
| if (!zb->has_wp) |
| return io_u_accept; |
| /* |
| * Make sure the I/O does not cross over the zone wp position. |
| */ |
| new_len = min((unsigned long long)io_u->buflen, |
| (unsigned long long)(zb->wp - io_u->offset)); |
| new_len = new_len / min_bs * min_bs; |
| if (new_len < io_u->buflen) { |
| io_u->buflen = new_len; |
| dprint(FD_IO, "Changed length from %u into %llu\n", |
| orig_len, io_u->buflen); |
| } |
| assert(zb->start <= io_u->offset); |
| assert(io_u->offset + io_u->buflen <= zb->wp); |
| goto accept; |
| case DDIR_WRITE: |
| if (io_u->buflen > f->zbd_info->zone_size) { |
| td_verror(td, EINVAL, "I/O buflen exceeds zone size"); |
| dprint(FD_IO, |
| "%s: I/O buflen %llu exceeds zone size %llu\n", |
| f->file_name, io_u->buflen, |
| (unsigned long long) f->zbd_info->zone_size); |
| goto eof; |
| } |
| if (!zbd_open_zone(td, f, zone_idx_b)) { |
| zone_unlock(zb); |
| zb = zbd_convert_to_open_zone(td, io_u); |
| if (!zb) { |
| dprint(FD_IO, "%s: can't convert to open zone", |
| f->file_name); |
| goto eof; |
| } |
| zone_idx_b = zbd_zone_nr(f, zb); |
| } |
| /* Check whether the zone reset threshold has been exceeded */ |
| if (td->o.zrf.u.f) { |
| if (f->zbd_info->wp_sectors_with_data >= |
| f->io_size * td->o.zrt.u.f && |
| zbd_dec_and_reset_write_cnt(td, f)) { |
| zb->reset_zone = 1; |
| } |
| } |
| /* Reset the zone pointer if necessary */ |
| if (zb->reset_zone || zbd_zone_full(f, zb, min_bs)) { |
| assert(td->o.verify == VERIFY_NONE); |
| /* |
| * Since previous write requests may have been submitted |
| * asynchronously and since we will submit the zone |
| * reset synchronously, wait until previously submitted |
| * write requests have completed before issuing a |
| * zone reset. |
| */ |
| io_u_quiesce(td); |
| zb->reset_zone = 0; |
| if (zbd_reset_zone(td, f, zb) < 0) |
| goto eof; |
| |
| if (zb->capacity < min_bs) { |
| td_verror(td, EINVAL, "ZCAP is less min_bs"); |
| log_err("zone capacity %llu smaller than minimum block size %d\n", |
| (unsigned long long)zb->capacity, |
| min_bs); |
| goto eof; |
| } |
| } |
| /* Make writes occur at the write pointer */ |
| assert(!zbd_zone_full(f, zb, min_bs)); |
| io_u->offset = zb->wp; |
| if (!is_valid_offset(f, io_u->offset)) { |
| td_verror(td, EINVAL, "invalid WP value"); |
| dprint(FD_ZBD, "%s: dropped request with offset %llu\n", |
| f->file_name, io_u->offset); |
| goto eof; |
| } |
| /* |
| * Make sure that the buflen is a multiple of the minimal |
| * block size. Give up if shrinking would make the request too |
| * small. |
| */ |
| new_len = min((unsigned long long)io_u->buflen, |
| zbd_zone_capacity_end(zb) - io_u->offset); |
| new_len = new_len / min_bs * min_bs; |
| if (new_len == io_u->buflen) |
| goto accept; |
| if (new_len >= min_bs) { |
| io_u->buflen = new_len; |
| dprint(FD_IO, "Changed length from %u into %llu\n", |
| orig_len, io_u->buflen); |
| goto accept; |
| } |
| td_verror(td, EIO, "zone remainder too small"); |
| log_err("zone remainder %lld smaller than min block size %d\n", |
| (zbd_zone_capacity_end(zb) - io_u->offset), min_bs); |
| goto eof; |
| case DDIR_TRIM: |
| /* fall-through */ |
| case DDIR_SYNC: |
| case DDIR_DATASYNC: |
| case DDIR_SYNC_FILE_RANGE: |
| case DDIR_WAIT: |
| case DDIR_LAST: |
| case DDIR_INVAL: |
| goto accept; |
| } |
| |
| assert(false); |
| |
| accept: |
| assert(zb->has_wp); |
| assert(zb->cond != ZBD_ZONE_COND_OFFLINE); |
| assert(!io_u->zbd_queue_io); |
| assert(!io_u->zbd_put_io); |
| io_u->zbd_queue_io = zbd_queue_io; |
| io_u->zbd_put_io = zbd_put_io; |
| /* |
| * Since we return with the zone lock still held, |
| * add an annotation to let Coverity know that it |
| * is intentional. |
| */ |
| /* coverity[missing_unlock] */ |
| return io_u_accept; |
| |
| eof: |
| if (zb && zb->has_wp) |
| zone_unlock(zb); |
| return io_u_eof; |
| } |
| |
| /* Return a string with ZBD statistics */ |
| char *zbd_write_status(const struct thread_stat *ts) |
| { |
| char *res; |
| |
| if (asprintf(&res, "; %llu zone resets", (unsigned long long) ts->nr_zone_resets) < 0) |
| return NULL; |
| return res; |
| } |