2 * Copyright (C) 2018 Western Digital Corporation or its affiliates.
4 * This file is released under the GPL.
19 #include "oslib/asprintf.h"
26 * zbd_get_zoned_model - Get a device zoned model
27 * @td: FIO thread data
28 * @f: FIO file for which to get model information
30 int zbd_get_zoned_model(struct thread_data *td, struct fio_file *f,
31 enum zbd_zoned_model *model)
35 if (td->io_ops && td->io_ops->get_zoned_model)
36 ret = td->io_ops->get_zoned_model(td, f, model);
38 ret = blkzoned_get_zoned_model(td, f, model);
40 td_verror(td, errno, "get zoned model failed");
41 log_err("%s: get zoned model failed (%d).\n",
49 * zbd_report_zones - Get zone information
50 * @td: FIO thread data.
51 * @f: FIO file for which to get zone information
52 * @offset: offset from which to report zones
53 * @zones: Array of struct zbd_zone
54 * @nr_zones: Size of @zones array
56 * Get zone information into @zones starting from the zone at offset @offset
57 * for the device specified by @f.
59 * Returns the number of zones reported upon success and a negative error code
60 * upon failure. If the zone report is empty, always assume an error (device
61 * problem) and return -EIO.
63 int zbd_report_zones(struct thread_data *td, struct fio_file *f,
64 uint64_t offset, struct zbd_zone *zones,
65 unsigned int nr_zones)
69 if (td->io_ops && td->io_ops->report_zones)
70 ret = td->io_ops->report_zones(td, f, offset, zones, nr_zones);
72 ret = blkzoned_report_zones(td, f, offset, zones, nr_zones);
74 td_verror(td, errno, "report zones failed");
75 log_err("%s: report zones from sector %llu failed (%d).\n",
76 f->file_name, (unsigned long long)offset >> 9, errno);
77 } else if (ret == 0) {
78 td_verror(td, errno, "Empty zone report");
79 log_err("%s: report zones from sector %llu is empty.\n",
80 f->file_name, (unsigned long long)offset >> 9);
88 * zbd_reset_wp - reset the write pointer of a range of zones
89 * @td: FIO thread data.
90 * @f: FIO file for which to reset zones
91 * @offset: Starting offset of the first zone to reset
92 * @length: Length of the range of zones to reset
94 * Reset the write pointer of all zones in the range @offset...@offset+@length.
95 * Returns 0 upon success and a negative error code upon failure.
97 int zbd_reset_wp(struct thread_data *td, struct fio_file *f,
98 uint64_t offset, uint64_t length)
102 if (td->io_ops && td->io_ops->reset_wp)
103 ret = td->io_ops->reset_wp(td, f, offset, length);
105 ret = blkzoned_reset_wp(td, f, offset, length);
107 td_verror(td, errno, "resetting wp failed");
108 log_err("%s: resetting wp for %llu sectors at sector %llu failed (%d).\n",
109 f->file_name, (unsigned long long)length >> 9,
110 (unsigned long long)offset >> 9, errno);
117 * zbd_zone_idx - convert an offset into a zone number
119 * @offset: offset in bytes. If this offset is in the first zone_size bytes
120 * past the disk size then the index of the sentinel is returned.
122 static uint32_t zbd_zone_idx(const struct fio_file *f, uint64_t offset)
126 if (f->zbd_info->zone_size_log2 > 0)
127 zone_idx = offset >> f->zbd_info->zone_size_log2;
129 zone_idx = offset / f->zbd_info->zone_size;
131 return min(zone_idx, f->zbd_info->nr_zones);
135 * zbd_zone_end - Return zone end location
136 * @z: zone info pointer.
138 static inline uint64_t zbd_zone_end(const struct fio_zone_info *z)
144 * zbd_zone_capacity_end - Return zone capacity limit end location
145 * @z: zone info pointer.
147 static inline uint64_t zbd_zone_capacity_end(const struct fio_zone_info *z)
149 return z->start + z->capacity;
153 * zbd_zone_full - verify whether a minimum number of bytes remain in a zone
155 * @z: zone info pointer.
156 * @required: minimum number of bytes that must remain in a zone.
158 * The caller must hold z->mutex.
160 static bool zbd_zone_full(const struct fio_file *f, struct fio_zone_info *z,
163 assert((required & 511) == 0);
166 z->wp + required > zbd_zone_capacity_end(z);
169 static void zone_lock(struct thread_data *td, const struct fio_file *f,
170 struct fio_zone_info *z)
172 struct zoned_block_device_info *zbd = f->zbd_info;
173 uint32_t nz = z - zbd->zone_info;
175 /* A thread should never lock zones outside its working area. */
176 assert(f->min_zone <= nz && nz < f->max_zone);
181 * Lock the io_u target zone. The zone will be unlocked if io_u offset
182 * is changed or when io_u completes and zbd_put_io() executed.
183 * To avoid multiple jobs doing asynchronous I/Os from deadlocking each
184 * other waiting for zone locks when building an io_u batch, first
185 * only trylock the zone. If the zone is already locked by another job,
186 * process the currently queued I/Os so that I/O progress is made and
189 if (pthread_mutex_trylock(&z->mutex) != 0) {
190 if (!td_ioengine_flagged(td, FIO_SYNCIO))
192 pthread_mutex_lock(&z->mutex);
196 static inline void zone_unlock(struct fio_zone_info *z)
201 ret = pthread_mutex_unlock(&z->mutex);
205 static bool is_valid_offset(const struct fio_file *f, uint64_t offset)
207 return (uint64_t)(offset - f->file_offset) < f->io_size;
210 static inline struct fio_zone_info *get_zone(const struct fio_file *f,
211 unsigned int zone_nr)
213 return &f->zbd_info->zone_info[zone_nr];
216 /* Verify whether direct I/O is used for all host-managed zoned drives. */
217 static bool zbd_using_direct_io(void)
219 struct thread_data *td;
224 if (td->o.odirect || !(td->o.td_ddir & TD_DDIR_WRITE))
226 for_each_file(td, f, j) {
228 f->zbd_info->model == ZBD_HOST_MANAGED)
236 /* Whether or not the I/O range for f includes one or more sequential zones */
237 static bool zbd_is_seq_job(struct fio_file *f)
239 uint32_t zone_idx, zone_idx_b, zone_idx_e;
244 zone_idx_b = zbd_zone_idx(f, f->file_offset);
245 zone_idx_e = zbd_zone_idx(f, f->file_offset + f->io_size - 1);
246 for (zone_idx = zone_idx_b; zone_idx <= zone_idx_e; zone_idx++)
247 if (get_zone(f, zone_idx)->has_wp)
254 * Verify whether offset and size parameters are aligned with zone boundaries.
256 static bool zbd_verify_sizes(void)
258 const struct fio_zone_info *z;
259 struct thread_data *td;
261 uint64_t new_offset, new_end;
266 for_each_file(td, f, j) {
269 if (f->file_offset >= f->real_file_size)
271 if (!zbd_is_seq_job(f))
274 if (!td->o.zone_size) {
275 td->o.zone_size = f->zbd_info->zone_size;
276 if (!td->o.zone_size) {
277 log_err("%s: invalid 0 zone size\n",
281 } else if (td->o.zone_size != f->zbd_info->zone_size) {
282 log_err("%s: job parameter zonesize %llu does not match disk zone size %llu.\n",
283 f->file_name, (unsigned long long) td->o.zone_size,
284 (unsigned long long) f->zbd_info->zone_size);
288 if (td->o.zone_skip % td->o.zone_size) {
289 log_err("%s: zoneskip %llu is not a multiple of the device zone size %llu.\n",
290 f->file_name, (unsigned long long) td->o.zone_skip,
291 (unsigned long long) td->o.zone_size);
295 zone_idx = zbd_zone_idx(f, f->file_offset);
296 z = get_zone(f, zone_idx);
297 if ((f->file_offset != z->start) &&
298 (td->o.td_ddir != TD_DDIR_READ)) {
299 new_offset = zbd_zone_end(z);
300 if (new_offset >= f->file_offset + f->io_size) {
301 log_info("%s: io_size must be at least one zone\n",
305 log_info("%s: rounded up offset from %llu to %llu\n",
306 f->file_name, (unsigned long long) f->file_offset,
307 (unsigned long long) new_offset);
308 f->io_size -= (new_offset - f->file_offset);
309 f->file_offset = new_offset;
311 zone_idx = zbd_zone_idx(f, f->file_offset + f->io_size);
312 z = get_zone(f, zone_idx);
314 if ((td->o.td_ddir != TD_DDIR_READ) &&
315 (f->file_offset + f->io_size != new_end)) {
316 if (new_end <= f->file_offset) {
317 log_info("%s: io_size must be at least one zone\n",
321 log_info("%s: rounded down io_size from %llu to %llu\n",
322 f->file_name, (unsigned long long) f->io_size,
323 (unsigned long long) new_end - f->file_offset);
324 f->io_size = new_end - f->file_offset;
332 static bool zbd_verify_bs(void)
334 struct thread_data *td;
339 for_each_file(td, f, j) {
344 zone_size = f->zbd_info->zone_size;
345 for (k = 0; k < FIO_ARRAY_SIZE(td->o.bs); k++) {
346 if (td->o.verify != VERIFY_NONE &&
347 zone_size % td->o.bs[k] != 0) {
348 log_info("%s: block size %llu is not a divisor of the zone size %llu\n",
349 f->file_name, td->o.bs[k],
350 (unsigned long long)zone_size);
359 static int ilog2(uint64_t i)
371 * Initialize f->zbd_info for devices that are not zoned block devices. This
372 * allows to execute a ZBD workload against a non-ZBD device.
374 static int init_zone_info(struct thread_data *td, struct fio_file *f)
377 struct fio_zone_info *p;
378 uint64_t zone_size = td->o.zone_size;
379 uint64_t zone_capacity = td->o.zone_capacity;
380 struct zoned_block_device_info *zbd_info = NULL;
383 if (zone_size == 0) {
384 log_err("%s: Specifying the zone size is mandatory for regular block devices with --zonemode=zbd\n\n",
389 if (zone_size < 512) {
390 log_err("%s: zone size must be at least 512 bytes for --zonemode=zbd\n\n",
395 if (zone_capacity == 0)
396 zone_capacity = zone_size;
398 if (zone_capacity > zone_size) {
399 log_err("%s: job parameter zonecapacity %llu is larger than zone size %llu\n",
400 f->file_name, (unsigned long long) td->o.zone_capacity,
401 (unsigned long long) td->o.zone_size);
405 nr_zones = (f->real_file_size + zone_size - 1) / zone_size;
406 zbd_info = scalloc(1, sizeof(*zbd_info) +
407 (nr_zones + 1) * sizeof(zbd_info->zone_info[0]));
411 mutex_init_pshared(&zbd_info->mutex);
412 zbd_info->refcount = 1;
413 p = &zbd_info->zone_info[0];
414 for (i = 0; i < nr_zones; i++, p++) {
415 mutex_init_pshared_with_type(&p->mutex,
416 PTHREAD_MUTEX_RECURSIVE);
417 p->start = i * zone_size;
419 p->type = ZBD_ZONE_TYPE_SWR;
420 p->cond = ZBD_ZONE_COND_EMPTY;
421 p->capacity = zone_capacity;
425 p->start = nr_zones * zone_size;
427 f->zbd_info = zbd_info;
428 f->zbd_info->zone_size = zone_size;
429 f->zbd_info->zone_size_log2 = is_power_of_2(zone_size) ?
430 ilog2(zone_size) : 0;
431 f->zbd_info->nr_zones = nr_zones;
436 * Maximum number of zones to report in one operation.
438 #define ZBD_REPORT_MAX_ZONES 8192U
441 * Parse the device zone report and store it in f->zbd_info. Must be called
442 * only for devices that are zoned, namely those with a model != ZBD_NONE.
444 static int parse_zone_info(struct thread_data *td, struct fio_file *f)
447 struct zbd_zone *zones, *z;
448 struct fio_zone_info *p;
449 uint64_t zone_size, offset;
450 struct zoned_block_device_info *zbd_info = NULL;
451 int i, j, ret = -ENOMEM;
453 zones = calloc(ZBD_REPORT_MAX_ZONES, sizeof(struct zbd_zone));
457 nrz = zbd_report_zones(td, f, 0, zones, ZBD_REPORT_MAX_ZONES);
460 log_info("fio: report zones (offset 0) failed for %s (%d).\n",
465 zone_size = zones[0].len;
466 nr_zones = (f->real_file_size + zone_size - 1) / zone_size;
468 if (td->o.zone_size == 0) {
469 td->o.zone_size = zone_size;
470 } else if (td->o.zone_size != zone_size) {
471 log_err("fio: %s job parameter zonesize %llu does not match disk zone size %llu.\n",
472 f->file_name, (unsigned long long) td->o.zone_size,
473 (unsigned long long) zone_size);
478 dprint(FD_ZBD, "Device %s has %d zones of size %llu KB\n", f->file_name,
479 nr_zones, (unsigned long long) zone_size / 1024);
481 zbd_info = scalloc(1, sizeof(*zbd_info) +
482 (nr_zones + 1) * sizeof(zbd_info->zone_info[0]));
485 mutex_init_pshared(&zbd_info->mutex);
486 zbd_info->refcount = 1;
487 p = &zbd_info->zone_info[0];
488 for (offset = 0, j = 0; j < nr_zones;) {
490 for (i = 0; i < nrz; i++, j++, z++, p++) {
491 mutex_init_pshared_with_type(&p->mutex,
492 PTHREAD_MUTEX_RECURSIVE);
494 p->capacity = z->capacity;
496 case ZBD_ZONE_COND_NOT_WP:
497 case ZBD_ZONE_COND_FULL:
498 p->wp = p->start + p->capacity;
501 assert(z->start <= z->wp);
502 assert(z->wp <= z->start + zone_size);
508 case ZBD_ZONE_TYPE_SWR:
517 if (j > 0 && p->start != p[-1].start + zone_size) {
518 log_info("%s: invalid zone data\n",
525 offset = z->start + z->len;
528 nrz = zbd_report_zones(td, f, offset, zones,
529 min((uint32_t)(nr_zones - j),
530 ZBD_REPORT_MAX_ZONES));
533 log_info("fio: report zones (offset %llu) failed for %s (%d).\n",
534 (unsigned long long)offset,
541 zbd_info->zone_info[nr_zones].start = offset;
543 f->zbd_info = zbd_info;
544 f->zbd_info->zone_size = zone_size;
545 f->zbd_info->zone_size_log2 = is_power_of_2(zone_size) ?
546 ilog2(zone_size) : 0;
547 f->zbd_info->nr_zones = nr_zones;
558 * Allocate zone information and store it into f->zbd_info if zonemode=zbd.
560 * Returns 0 upon success and a negative error code upon failure.
562 static int zbd_create_zone_info(struct thread_data *td, struct fio_file *f)
564 enum zbd_zoned_model zbd_model;
567 assert(td->o.zone_mode == ZONE_MODE_ZBD);
569 ret = zbd_get_zoned_model(td, f, &zbd_model);
577 case ZBD_HOST_MANAGED:
578 ret = parse_zone_info(td, f);
581 ret = init_zone_info(td, f);
584 td_verror(td, EINVAL, "Unsupported zoned model");
585 log_err("Unsupported zoned model\n");
590 f->zbd_info->model = zbd_model;
591 f->zbd_info->max_open_zones =
592 min_not_zero(td->o.max_open_zones, ZBD_MAX_OPEN_ZONES);
597 void zbd_free_zone_info(struct fio_file *f)
603 pthread_mutex_lock(&f->zbd_info->mutex);
604 refcount = --f->zbd_info->refcount;
605 pthread_mutex_unlock(&f->zbd_info->mutex);
607 assert((int32_t)refcount >= 0);
614 * Initialize f->zbd_info.
616 * Returns 0 upon success and a negative error code upon failure.
618 * Note: this function can only work correctly if it is called before the first
621 static int zbd_init_zone_info(struct thread_data *td, struct fio_file *file)
623 struct thread_data *td2;
627 for_each_td(td2, i) {
628 for_each_file(td2, f2, j) {
629 if (td2 == td && f2 == file)
632 strcmp(f2->file_name, file->file_name) != 0)
634 file->zbd_info = f2->zbd_info;
635 file->zbd_info->refcount++;
640 ret = zbd_create_zone_info(td, file);
642 td_verror(td, -ret, "zbd_create_zone_info() failed");
646 static bool zbd_open_zone(struct thread_data *td, const struct fio_file *f,
648 static int zbd_reset_zone(struct thread_data *td, struct fio_file *f,
649 struct fio_zone_info *z);
651 int zbd_init_files(struct thread_data *td)
656 for_each_file(td, f, i) {
657 if (zbd_init_zone_info(td, f))
663 void zbd_recalc_options_with_zone_granularity(struct thread_data *td)
668 for_each_file(td, f, i) {
669 struct zoned_block_device_info *zbd = f->zbd_info;
670 // zonemode=strided doesn't get per-file zone size.
671 uint64_t zone_size = zbd ? zbd->zone_size : td->o.zone_size;
676 if (td->o.size_nz > 0) {
677 td->o.size = td->o.size_nz * zone_size;
679 if (td->o.io_size_nz > 0) {
680 td->o.io_size = td->o.io_size_nz * zone_size;
682 if (td->o.start_offset_nz > 0) {
683 td->o.start_offset = td->o.start_offset_nz * zone_size;
685 if (td->o.offset_increment_nz > 0) {
686 td->o.offset_increment = td->o.offset_increment_nz * zone_size;
688 if (td->o.zone_skip_nz > 0) {
689 td->o.zone_skip = td->o.zone_skip_nz * zone_size;
694 int zbd_setup_files(struct thread_data *td)
699 if (!zbd_using_direct_io()) {
700 log_err("Using direct I/O is mandatory for writing to ZBD drives\n\n");
704 if (!zbd_verify_sizes())
707 if (!zbd_verify_bs())
710 for_each_file(td, f, i) {
711 struct zoned_block_device_info *zbd = f->zbd_info;
712 struct fio_zone_info *z;
718 f->min_zone = zbd_zone_idx(f, f->file_offset);
719 f->max_zone = zbd_zone_idx(f, f->file_offset + f->io_size);
722 * When all zones in the I/O range are conventional, io_size
723 * can be smaller than zone size, making min_zone the same
724 * as max_zone. This is why the assert below needs to be made
727 if (zbd_is_seq_job(f))
728 assert(f->min_zone < f->max_zone);
730 if (td->o.max_open_zones > 0 &&
731 zbd->max_open_zones != td->o.max_open_zones) {
732 log_err("Different 'max_open_zones' values\n");
735 if (zbd->max_open_zones > ZBD_MAX_OPEN_ZONES) {
736 log_err("'max_open_zones' value is limited by %u\n", ZBD_MAX_OPEN_ZONES);
740 for (zi = f->min_zone; zi < f->max_zone; zi++) {
741 z = &zbd->zone_info[zi];
742 if (z->cond != ZBD_ZONE_COND_IMP_OPEN &&
743 z->cond != ZBD_ZONE_COND_EXP_OPEN)
745 if (zbd_open_zone(td, f, zi))
748 * If the number of open zones exceeds specified limits,
749 * reset all extra open zones.
751 if (zbd_reset_zone(td, f, z) < 0) {
752 log_err("Failed to reest zone %d\n", zi);
761 static inline unsigned int zbd_zone_nr(const struct fio_file *f,
762 struct fio_zone_info *zone)
764 return zone - f->zbd_info->zone_info;
768 * zbd_reset_zone - reset the write pointer of a single zone
769 * @td: FIO thread data.
770 * @f: FIO file associated with the disk for which to reset a write pointer.
773 * Returns 0 upon success and a negative error code upon failure.
775 * The caller must hold z->mutex.
777 static int zbd_reset_zone(struct thread_data *td, struct fio_file *f,
778 struct fio_zone_info *z)
780 uint64_t offset = z->start;
781 uint64_t length = (z+1)->start - offset;
782 uint64_t data_in_zone = z->wp - z->start;
788 assert(is_valid_offset(f, offset + length - 1));
790 dprint(FD_ZBD, "%s: resetting wp of zone %u.\n", f->file_name,
792 switch (f->zbd_info->model) {
794 case ZBD_HOST_MANAGED:
795 ret = zbd_reset_wp(td, f, offset, length);
803 pthread_mutex_lock(&f->zbd_info->mutex);
804 f->zbd_info->sectors_with_data -= data_in_zone;
805 f->zbd_info->wp_sectors_with_data -= data_in_zone;
806 pthread_mutex_unlock(&f->zbd_info->mutex);
810 td->ts.nr_zone_resets++;
815 /* The caller must hold f->zbd_info->mutex */
816 static void zbd_close_zone(struct thread_data *td, const struct fio_file *f,
817 unsigned int zone_idx)
819 uint32_t open_zone_idx = 0;
821 for (; open_zone_idx < f->zbd_info->num_open_zones; open_zone_idx++) {
822 if (f->zbd_info->open_zones[open_zone_idx] == zone_idx)
825 if (open_zone_idx == f->zbd_info->num_open_zones)
828 dprint(FD_ZBD, "%s: closing zone %d\n", f->file_name, zone_idx);
829 memmove(f->zbd_info->open_zones + open_zone_idx,
830 f->zbd_info->open_zones + open_zone_idx + 1,
831 (ZBD_MAX_OPEN_ZONES - (open_zone_idx + 1)) *
832 sizeof(f->zbd_info->open_zones[0]));
833 f->zbd_info->num_open_zones--;
834 td->num_open_zones--;
835 get_zone(f, zone_idx)->open = 0;
839 * Reset a range of zones. Returns 0 upon success and 1 upon failure.
840 * @td: fio thread data.
841 * @f: fio file for which to reset zones
842 * @zb: first zone to reset.
843 * @ze: first zone not to reset.
845 static int zbd_reset_zones(struct thread_data *td, struct fio_file *f,
846 struct fio_zone_info *const zb,
847 struct fio_zone_info *const ze)
849 struct fio_zone_info *z;
850 const uint32_t min_bs = td->o.min_bs[DDIR_WRITE];
855 dprint(FD_ZBD, "%s: examining zones %u .. %u\n", f->file_name,
856 zbd_zone_nr(f, zb), zbd_zone_nr(f, ze));
857 for (z = zb; z < ze; z++) {
858 uint32_t nz = zbd_zone_nr(f, z);
863 pthread_mutex_lock(&f->zbd_info->mutex);
864 zbd_close_zone(td, f, nz);
865 pthread_mutex_unlock(&f->zbd_info->mutex);
866 if (z->wp != z->start) {
867 dprint(FD_ZBD, "%s: resetting zone %u\n",
868 f->file_name, zbd_zone_nr(f, z));
869 if (zbd_reset_zone(td, f, z) < 0)
879 * Reset zbd_info.write_cnt, the counter that counts down towards the next
882 static void _zbd_reset_write_cnt(const struct thread_data *td,
883 const struct fio_file *f)
885 assert(0 <= td->o.zrf.u.f && td->o.zrf.u.f <= 1);
887 f->zbd_info->write_cnt = td->o.zrf.u.f ?
888 min(1.0 / td->o.zrf.u.f, 0.0 + UINT_MAX) : UINT_MAX;
891 static void zbd_reset_write_cnt(const struct thread_data *td,
892 const struct fio_file *f)
894 pthread_mutex_lock(&f->zbd_info->mutex);
895 _zbd_reset_write_cnt(td, f);
896 pthread_mutex_unlock(&f->zbd_info->mutex);
899 static bool zbd_dec_and_reset_write_cnt(const struct thread_data *td,
900 const struct fio_file *f)
902 uint32_t write_cnt = 0;
904 pthread_mutex_lock(&f->zbd_info->mutex);
905 assert(f->zbd_info->write_cnt);
906 if (f->zbd_info->write_cnt)
907 write_cnt = --f->zbd_info->write_cnt;
909 _zbd_reset_write_cnt(td, f);
910 pthread_mutex_unlock(&f->zbd_info->mutex);
912 return write_cnt == 0;
920 /* Calculate the number of sectors with data (swd) and perform action 'a' */
921 static uint64_t zbd_process_swd(struct thread_data *td,
922 const struct fio_file *f, enum swd_action a)
924 struct fio_zone_info *zb, *ze, *z;
928 zb = get_zone(f, f->min_zone);
929 ze = get_zone(f, f->max_zone);
930 for (z = zb; z < ze; z++) {
933 wp_swd += z->wp - z->start;
935 swd += z->wp - z->start;
937 pthread_mutex_lock(&f->zbd_info->mutex);
940 assert(f->zbd_info->sectors_with_data == swd);
941 assert(f->zbd_info->wp_sectors_with_data == wp_swd);
944 f->zbd_info->sectors_with_data = swd;
945 f->zbd_info->wp_sectors_with_data = wp_swd;
948 pthread_mutex_unlock(&f->zbd_info->mutex);
949 for (z = zb; z < ze; z++)
957 * The swd check is useful for debugging but takes too much time to leave
958 * it enabled all the time. Hence it is disabled by default.
960 static const bool enable_check_swd = false;
962 /* Check whether the values of zbd_info.*sectors_with_data are correct. */
963 static void zbd_check_swd(struct thread_data *td, const struct fio_file *f)
965 if (!enable_check_swd)
968 zbd_process_swd(td, f, CHECK_SWD);
971 void zbd_file_reset(struct thread_data *td, struct fio_file *f)
973 struct fio_zone_info *zb, *ze;
976 if (!f->zbd_info || !td_write(td))
979 zb = get_zone(f, f->min_zone);
980 ze = get_zone(f, f->max_zone);
981 swd = zbd_process_swd(td, f, SET_SWD);
982 dprint(FD_ZBD, "%s(%s): swd = %" PRIu64 "\n", __func__, f->file_name,
985 * If data verification is enabled reset the affected zones before
986 * writing any data to avoid that a zone reset has to be issued while
987 * writing data, which causes data loss.
989 if (td->o.verify != VERIFY_NONE && td->runstate != TD_VERIFYING)
990 zbd_reset_zones(td, f, zb, ze);
991 zbd_reset_write_cnt(td, f);
994 /* The caller must hold f->zbd_info->mutex. */
995 static bool is_zone_open(const struct thread_data *td, const struct fio_file *f,
996 unsigned int zone_idx)
998 struct zoned_block_device_info *zbdi = f->zbd_info;
1001 assert(td->o.job_max_open_zones == 0 || td->num_open_zones <= td->o.job_max_open_zones);
1002 assert(td->o.job_max_open_zones <= zbdi->max_open_zones);
1003 assert(zbdi->num_open_zones <= zbdi->max_open_zones);
1005 for (i = 0; i < zbdi->num_open_zones; i++)
1006 if (zbdi->open_zones[i] == zone_idx)
1013 * Open a ZBD zone if it was not yet open. Returns true if either the zone was
1014 * already open or if opening a new zone is allowed. Returns false if the zone
1015 * was not yet open and opening a new zone would cause the zone limit to be
1018 static bool zbd_open_zone(struct thread_data *td, const struct fio_file *f,
1021 const uint32_t min_bs = td->o.min_bs[DDIR_WRITE];
1022 struct fio_zone_info *z = get_zone(f, zone_idx);
1025 if (z->cond == ZBD_ZONE_COND_OFFLINE)
1029 * Skip full zones with data verification enabled because resetting a
1030 * zone causes data loss and hence causes verification to fail.
1032 if (td->o.verify != VERIFY_NONE && zbd_zone_full(f, z, min_bs))
1035 pthread_mutex_lock(&f->zbd_info->mutex);
1036 if (is_zone_open(td, f, zone_idx)) {
1038 * If the zone is already open and going to be full by writes
1039 * in-flight, handle it as a full zone instead of an open zone.
1041 if (z->wp >= zbd_zone_capacity_end(z))
1046 /* Zero means no limit */
1047 if (td->o.job_max_open_zones > 0 &&
1048 td->num_open_zones >= td->o.job_max_open_zones)
1050 if (f->zbd_info->num_open_zones >= f->zbd_info->max_open_zones)
1052 dprint(FD_ZBD, "%s: opening zone %d\n", f->file_name, zone_idx);
1053 f->zbd_info->open_zones[f->zbd_info->num_open_zones++] = zone_idx;
1054 td->num_open_zones++;
1059 pthread_mutex_unlock(&f->zbd_info->mutex);
1063 /* Anything goes as long as it is not a constant. */
1064 static uint32_t pick_random_zone_idx(const struct fio_file *f,
1065 const struct io_u *io_u)
1067 return io_u->offset * f->zbd_info->num_open_zones / f->real_file_size;
1071 * Modify the offset of an I/O unit that does not refer to an open zone such
1072 * that it refers to an open zone. Close an open zone and open a new zone if
1073 * necessary. The open zone is searched across sequential zones.
1074 * This algorithm can only work correctly if all write pointers are
1075 * a multiple of the fio block size. The caller must neither hold z->mutex
1076 * nor f->zbd_info->mutex. Returns with z->mutex held upon success.
1078 static struct fio_zone_info *zbd_convert_to_open_zone(struct thread_data *td,
1081 const uint32_t min_bs = td->o.min_bs[io_u->ddir];
1082 struct fio_file *f = io_u->file;
1083 struct fio_zone_info *z;
1084 unsigned int open_zone_idx = -1;
1085 uint32_t zone_idx, new_zone_idx;
1087 bool wait_zone_close;
1089 assert(is_valid_offset(f, io_u->offset));
1091 if (td->o.max_open_zones || td->o.job_max_open_zones) {
1093 * This statement accesses f->zbd_info->open_zones[] on purpose
1096 zone_idx = f->zbd_info->open_zones[pick_random_zone_idx(f, io_u)];
1098 zone_idx = zbd_zone_idx(f, io_u->offset);
1100 if (zone_idx < f->min_zone)
1101 zone_idx = f->min_zone;
1102 else if (zone_idx >= f->max_zone)
1103 zone_idx = f->max_zone - 1;
1104 dprint(FD_ZBD, "%s(%s): starting from zone %d (offset %lld, buflen %lld)\n",
1105 __func__, f->file_name, zone_idx, io_u->offset, io_u->buflen);
1108 * Since z->mutex is the outer lock and f->zbd_info->mutex the inner
1109 * lock it can happen that the state of the zone with index zone_idx
1110 * has changed after 'z' has been assigned and before f->zbd_info->mutex
1111 * has been obtained. Hence the loop.
1116 z = get_zone(f, zone_idx);
1118 zone_lock(td, f, z);
1119 pthread_mutex_lock(&f->zbd_info->mutex);
1121 if (z->cond != ZBD_ZONE_COND_OFFLINE &&
1122 td->o.max_open_zones == 0 && td->o.job_max_open_zones == 0)
1124 if (f->zbd_info->num_open_zones == 0) {
1125 dprint(FD_ZBD, "%s(%s): no zones are open\n",
1126 __func__, f->file_name);
1127 goto open_other_zone;
1132 * List of opened zones is per-device, shared across all threads.
1133 * Start with quasi-random candidate zone.
1134 * Ignore zones which don't belong to thread's offset/size area.
1136 open_zone_idx = pick_random_zone_idx(f, io_u);
1137 assert(!open_zone_idx ||
1138 open_zone_idx < f->zbd_info->num_open_zones);
1139 tmp_idx = open_zone_idx;
1140 for (i = 0; i < f->zbd_info->num_open_zones; i++) {
1143 if (tmp_idx >= f->zbd_info->num_open_zones)
1145 tmpz = f->zbd_info->open_zones[tmp_idx];
1146 if (f->min_zone <= tmpz && tmpz < f->max_zone) {
1147 open_zone_idx = tmp_idx;
1148 goto found_candidate_zone;
1154 dprint(FD_ZBD, "%s(%s): no candidate zone\n",
1155 __func__, f->file_name);
1156 pthread_mutex_unlock(&f->zbd_info->mutex);
1161 found_candidate_zone:
1162 new_zone_idx = f->zbd_info->open_zones[open_zone_idx];
1163 if (new_zone_idx == zone_idx)
1165 zone_idx = new_zone_idx;
1166 pthread_mutex_unlock(&f->zbd_info->mutex);
1171 /* Both z->mutex and f->zbd_info->mutex are held. */
1174 if (z->wp + min_bs <= zbd_zone_capacity_end(z)) {
1175 pthread_mutex_unlock(&f->zbd_info->mutex);
1180 /* Check if number of open zones reaches one of limits. */
1182 f->zbd_info->num_open_zones == f->max_zone - f->min_zone ||
1183 (td->o.max_open_zones &&
1184 f->zbd_info->num_open_zones == td->o.max_open_zones) ||
1185 (td->o.job_max_open_zones &&
1186 td->num_open_zones == td->o.job_max_open_zones);
1188 pthread_mutex_unlock(&f->zbd_info->mutex);
1190 /* Only z->mutex is held. */
1193 * When number of open zones reaches to one of limits, wait for
1194 * zone close before opening a new zone.
1196 if (wait_zone_close) {
1197 dprint(FD_ZBD, "%s(%s): quiesce to allow open zones to close\n",
1198 __func__, f->file_name);
1202 /* Zone 'z' is full, so try to open a new zone. */
1203 for (i = f->io_size / f->zbd_info->zone_size; i > 0; i--) {
1208 if (!is_valid_offset(f, z->start)) {
1210 zone_idx = f->min_zone;
1211 z = get_zone(f, zone_idx);
1213 assert(is_valid_offset(f, z->start));
1216 zone_lock(td, f, z);
1219 if (zbd_open_zone(td, f, zone_idx))
1223 /* Only z->mutex is held. */
1225 /* Check whether the write fits in any of the already opened zones. */
1226 pthread_mutex_lock(&f->zbd_info->mutex);
1227 for (i = 0; i < f->zbd_info->num_open_zones; i++) {
1228 zone_idx = f->zbd_info->open_zones[i];
1229 if (zone_idx < f->min_zone || zone_idx >= f->max_zone)
1231 pthread_mutex_unlock(&f->zbd_info->mutex);
1234 z = get_zone(f, zone_idx);
1236 zone_lock(td, f, z);
1237 if (z->wp + min_bs <= zbd_zone_capacity_end(z))
1239 pthread_mutex_lock(&f->zbd_info->mutex);
1241 pthread_mutex_unlock(&f->zbd_info->mutex);
1243 dprint(FD_ZBD, "%s(%s): did not open another zone\n", __func__,
1248 dprint(FD_ZBD, "%s(%s): returning zone %d\n", __func__, f->file_name,
1250 io_u->offset = z->start;
1252 assert(z->cond != ZBD_ZONE_COND_OFFLINE);
1256 /* The caller must hold z->mutex. */
1257 static struct fio_zone_info *zbd_replay_write_order(struct thread_data *td,
1259 struct fio_zone_info *z)
1261 const struct fio_file *f = io_u->file;
1262 const uint32_t min_bs = td->o.min_bs[DDIR_WRITE];
1264 if (!zbd_open_zone(td, f, zbd_zone_nr(f, z))) {
1266 z = zbd_convert_to_open_zone(td, io_u);
1270 if (z->verify_block * min_bs >= z->capacity) {
1271 log_err("%s: %d * %d >= %llu\n", f->file_name, z->verify_block,
1272 min_bs, (unsigned long long)z->capacity);
1274 * If the assertion below fails during a test run, adding
1275 * "--experimental_verify=1" to the command line may help.
1279 io_u->offset = z->start + z->verify_block * min_bs;
1280 if (io_u->offset + io_u->buflen >= zbd_zone_capacity_end(z)) {
1281 log_err("%s: %llu + %llu >= %llu\n", f->file_name, io_u->offset,
1282 io_u->buflen, (unsigned long long) zbd_zone_capacity_end(z));
1285 z->verify_block += io_u->buflen / min_bs;
1291 * Find another zone for which @io_u fits in the readable data in the zone.
1292 * Search in zones @zb + 1 .. @zl. For random workload, also search in zones
1295 * Either returns NULL or returns a zone pointer. When the zone has write
1296 * pointer, hold the mutex for the zone.
1298 static struct fio_zone_info *
1299 zbd_find_zone(struct thread_data *td, struct io_u *io_u,
1300 struct fio_zone_info *zb, struct fio_zone_info *zl)
1302 const uint32_t min_bs = td->o.min_bs[io_u->ddir];
1303 struct fio_file *f = io_u->file;
1304 struct fio_zone_info *z1, *z2;
1305 const struct fio_zone_info *const zf = get_zone(f, f->min_zone);
1308 * Skip to the next non-empty zone in case of sequential I/O and to
1309 * the nearest non-empty zone in case of random I/O.
1311 for (z1 = zb + 1, z2 = zb - 1; z1 < zl || z2 >= zf; z1++, z2--) {
1312 if (z1 < zl && z1->cond != ZBD_ZONE_COND_OFFLINE) {
1314 zone_lock(td, f, z1);
1315 if (z1->start + min_bs <= z1->wp)
1319 } else if (!td_random(td)) {
1322 if (td_random(td) && z2 >= zf &&
1323 z2->cond != ZBD_ZONE_COND_OFFLINE) {
1325 zone_lock(td, f, z2);
1326 if (z2->start + min_bs <= z2->wp)
1332 dprint(FD_ZBD, "%s: adjusting random read offset failed\n",
1338 * zbd_end_zone_io - update zone status at command completion
1340 * @z: zone info pointer
1342 * If the write command made the zone full, close it.
1344 * The caller must hold z->mutex.
1346 static void zbd_end_zone_io(struct thread_data *td, const struct io_u *io_u,
1347 struct fio_zone_info *z)
1349 const struct fio_file *f = io_u->file;
1351 if (io_u->ddir == DDIR_WRITE &&
1352 io_u->offset + io_u->buflen >= zbd_zone_capacity_end(z)) {
1353 pthread_mutex_lock(&f->zbd_info->mutex);
1354 zbd_close_zone(td, f, zbd_zone_nr(f, z));
1355 pthread_mutex_unlock(&f->zbd_info->mutex);
1360 * zbd_queue_io - update the write pointer of a sequential zone
1362 * @success: Whether or not the I/O unit has been queued successfully
1363 * @q: queueing status (busy, completed or queued).
1365 * For write and trim operations, update the write pointer of the I/O unit
1368 static void zbd_queue_io(struct thread_data *td, struct io_u *io_u, int q,
1371 const struct fio_file *f = io_u->file;
1372 struct zoned_block_device_info *zbd_info = f->zbd_info;
1373 struct fio_zone_info *z;
1380 zone_idx = zbd_zone_idx(f, io_u->offset);
1381 assert(zone_idx < zbd_info->nr_zones);
1382 z = get_zone(f, zone_idx);
1390 "%s: queued I/O (%lld, %llu) for zone %u\n",
1391 f->file_name, io_u->offset, io_u->buflen, zone_idx);
1393 switch (io_u->ddir) {
1395 zone_end = min((uint64_t)(io_u->offset + io_u->buflen),
1396 zbd_zone_capacity_end(z));
1397 pthread_mutex_lock(&zbd_info->mutex);
1399 * z->wp > zone_end means that one or more I/O errors
1402 if (z->wp <= zone_end) {
1403 zbd_info->sectors_with_data += zone_end - z->wp;
1404 zbd_info->wp_sectors_with_data += zone_end - z->wp;
1406 pthread_mutex_unlock(&zbd_info->mutex);
1410 assert(z->wp == z->start);
1416 if (q == FIO_Q_COMPLETED && !io_u->error)
1417 zbd_end_zone_io(td, io_u, z);
1420 if (!success || q != FIO_Q_QUEUED) {
1421 /* BUSY or COMPLETED: unlock the zone */
1423 io_u->zbd_put_io = NULL;
1428 * zbd_put_io - Unlock an I/O unit target zone lock
1431 static void zbd_put_io(struct thread_data *td, const struct io_u *io_u)
1433 const struct fio_file *f = io_u->file;
1434 struct zoned_block_device_info *zbd_info = f->zbd_info;
1435 struct fio_zone_info *z;
1441 zone_idx = zbd_zone_idx(f, io_u->offset);
1442 assert(zone_idx < zbd_info->nr_zones);
1443 z = get_zone(f, zone_idx);
1448 "%s: terminate I/O (%lld, %llu) for zone %u\n",
1449 f->file_name, io_u->offset, io_u->buflen, zone_idx);
1451 zbd_end_zone_io(td, io_u, z);
1454 zbd_check_swd(td, f);
1458 * Windows and MacOS do not define this.
1461 #define EREMOTEIO 121 /* POSIX value */
1464 bool zbd_unaligned_write(int error_code)
1466 switch (error_code) {
1475 * setup_zbd_zone_mode - handle zoneskip as necessary for ZBD drives
1476 * @td: FIO thread data.
1477 * @io_u: FIO I/O unit.
1479 * For sequential workloads, change the file offset to skip zoneskip bytes when
1480 * no more IO can be performed in the current zone.
1481 * - For read workloads, zoneskip is applied when the io has reached the end of
1482 * the zone or the zone write position (when td->o.read_beyond_wp is false).
1483 * - For write workloads, zoneskip is applied when the zone is full.
1484 * This applies only to read and write operations.
1486 void setup_zbd_zone_mode(struct thread_data *td, struct io_u *io_u)
1488 struct fio_file *f = io_u->file;
1489 enum fio_ddir ddir = io_u->ddir;
1490 struct fio_zone_info *z;
1493 assert(td->o.zone_mode == ZONE_MODE_ZBD);
1494 assert(td->o.zone_size);
1496 zone_idx = zbd_zone_idx(f, f->last_pos[ddir]);
1497 z = get_zone(f, zone_idx);
1500 * When the zone capacity is smaller than the zone size and the I/O is
1501 * sequential write, skip to zone end if the latest position is at the
1502 * zone capacity limit.
1504 if (z->capacity < f->zbd_info->zone_size && !td_random(td) &&
1505 ddir == DDIR_WRITE &&
1506 f->last_pos[ddir] >= zbd_zone_capacity_end(z)) {
1508 "%s: Jump from zone capacity limit to zone end:"
1509 " (%llu -> %llu) for zone %u (%llu)\n",
1510 f->file_name, (unsigned long long) f->last_pos[ddir],
1511 (unsigned long long) zbd_zone_end(z), zone_idx,
1512 (unsigned long long) z->capacity);
1513 td->io_skip_bytes += zbd_zone_end(z) - f->last_pos[ddir];
1514 f->last_pos[ddir] = zbd_zone_end(z);
1518 * zone_skip is valid only for sequential workloads.
1520 if (td_random(td) || !td->o.zone_skip)
1524 * It is time to switch to a new zone if:
1525 * - zone_bytes == zone_size bytes have already been accessed
1526 * - The last position reached the end of the current zone.
1527 * - For reads with td->o.read_beyond_wp == false, the last position
1528 * reached the zone write pointer.
1530 if (td->zone_bytes >= td->o.zone_size ||
1531 f->last_pos[ddir] >= zbd_zone_end(z) ||
1532 (ddir == DDIR_READ &&
1533 (!td->o.read_beyond_wp) && f->last_pos[ddir] >= z->wp)) {
1538 f->file_offset += td->o.zone_size + td->o.zone_skip;
1541 * Wrap from the beginning, if we exceed the file size
1543 if (f->file_offset >= f->real_file_size)
1544 f->file_offset = get_start_offset(td, f);
1546 f->last_pos[ddir] = f->file_offset;
1547 td->io_skip_bytes += td->o.zone_skip;
1552 * zbd_adjust_ddir - Adjust an I/O direction for zonemode=zbd.
1554 * @td: FIO thread data.
1555 * @io_u: FIO I/O unit.
1556 * @ddir: I/O direction before adjustment.
1558 * Return adjusted I/O direction.
1560 enum fio_ddir zbd_adjust_ddir(struct thread_data *td, struct io_u *io_u,
1564 * In case read direction is chosen for the first random I/O, fio with
1565 * zonemode=zbd stops because no data can be read from zoned block
1566 * devices with all empty zones. Overwrite the first I/O direction as
1567 * write to make sure data to read exists.
1569 if (ddir != DDIR_READ || !td_rw(td))
1572 if (io_u->file->zbd_info->sectors_with_data ||
1573 td->o.read_beyond_wp)
1580 * zbd_adjust_block - adjust the offset and length as necessary for ZBD drives
1581 * @td: FIO thread data.
1582 * @io_u: FIO I/O unit.
1584 * Locking strategy: returns with z->mutex locked if and only if z refers
1585 * to a sequential zone and if io_u_accept is returned. z is the zone that
1586 * corresponds to io_u->offset at the end of this function.
1588 enum io_u_action zbd_adjust_block(struct thread_data *td, struct io_u *io_u)
1590 struct fio_file *f = io_u->file;
1591 uint32_t zone_idx_b;
1592 struct fio_zone_info *zb, *zl, *orig_zb;
1593 uint32_t orig_len = io_u->buflen;
1594 uint32_t min_bs = td->o.min_bs[io_u->ddir];
1602 assert(is_valid_offset(f, io_u->offset));
1603 assert(io_u->buflen);
1604 zone_idx_b = zbd_zone_idx(f, io_u->offset);
1605 zb = get_zone(f, zone_idx_b);
1609 /* Accept non-write I/Os for conventional zones. */
1610 if (io_u->ddir != DDIR_WRITE)
1613 * Make sure that writes to conventional zones
1614 * don't cross over to any sequential zones.
1616 if (!(zb + 1)->has_wp ||
1617 io_u->offset + io_u->buflen <= (zb + 1)->start)
1620 if (io_u->offset + min_bs > (zb + 1)->start) {
1622 "%s: off=%llu + min_bs=%u > next zone %llu\n",
1623 f->file_name, io_u->offset,
1624 min_bs, (unsigned long long) (zb + 1)->start);
1625 io_u->offset = zb->start + (zb + 1)->start - io_u->offset;
1626 new_len = min(io_u->buflen, (zb + 1)->start - io_u->offset);
1628 new_len = (zb + 1)->start - io_u->offset;
1630 io_u->buflen = new_len / min_bs * min_bs;
1635 * Accept the I/O offset for reads if reading beyond the write pointer
1638 if (zb->cond != ZBD_ZONE_COND_OFFLINE &&
1639 io_u->ddir == DDIR_READ && td->o.read_beyond_wp)
1642 zbd_check_swd(td, f);
1644 zone_lock(td, f, zb);
1646 switch (io_u->ddir) {
1648 if (td->runstate == TD_VERIFYING && td_write(td)) {
1649 zb = zbd_replay_write_order(td, io_u, zb);
1653 * Check that there is enough written data in the zone to do an
1654 * I/O of at least min_bs B. If there isn't, find a new zone for
1657 range = zb->cond != ZBD_ZONE_COND_OFFLINE ?
1658 zb->wp - zb->start : 0;
1659 if (range < min_bs ||
1660 ((!td_random(td)) && (io_u->offset + min_bs > zb->wp))) {
1662 zl = get_zone(f, f->max_zone);
1663 zb = zbd_find_zone(td, io_u, zb, zl);
1666 "%s: zbd_find_zone(%lld, %llu) failed\n",
1667 f->file_name, io_u->offset,
1672 * zbd_find_zone() returned a zone with a range of at
1675 range = zb->wp - zb->start;
1676 assert(range >= min_bs);
1679 io_u->offset = zb->start;
1682 * Make sure the I/O is within the zone valid data range while
1683 * maximizing the I/O size and preserving randomness.
1685 if (range <= io_u->buflen)
1686 io_u->offset = zb->start;
1687 else if (td_random(td))
1688 io_u->offset = zb->start +
1689 ((io_u->offset - orig_zb->start) %
1690 (range - io_u->buflen)) / min_bs * min_bs;
1692 * When zbd_find_zone() returns a conventional zone,
1693 * we can simply accept the new i/o offset here.
1698 * Make sure the I/O does not cross over the zone wp position.
1700 new_len = min((unsigned long long)io_u->buflen,
1701 (unsigned long long)(zb->wp - io_u->offset));
1702 new_len = new_len / min_bs * min_bs;
1703 if (new_len < io_u->buflen) {
1704 io_u->buflen = new_len;
1705 dprint(FD_IO, "Changed length from %u into %llu\n",
1706 orig_len, io_u->buflen);
1708 assert(zb->start <= io_u->offset);
1709 assert(io_u->offset + io_u->buflen <= zb->wp);
1712 if (io_u->buflen > f->zbd_info->zone_size) {
1713 td_verror(td, EINVAL, "I/O buflen exceeds zone size");
1715 "%s: I/O buflen %llu exceeds zone size %llu\n",
1716 f->file_name, io_u->buflen,
1717 (unsigned long long) f->zbd_info->zone_size);
1720 if (!zbd_open_zone(td, f, zone_idx_b)) {
1722 zb = zbd_convert_to_open_zone(td, io_u);
1724 dprint(FD_IO, "%s: can't convert to open zone",
1728 zone_idx_b = zbd_zone_nr(f, zb);
1730 /* Check whether the zone reset threshold has been exceeded */
1731 if (td->o.zrf.u.f) {
1732 if (f->zbd_info->wp_sectors_with_data >=
1733 f->io_size * td->o.zrt.u.f &&
1734 zbd_dec_and_reset_write_cnt(td, f)) {
1738 /* Reset the zone pointer if necessary */
1739 if (zb->reset_zone || zbd_zone_full(f, zb, min_bs)) {
1740 assert(td->o.verify == VERIFY_NONE);
1742 * Since previous write requests may have been submitted
1743 * asynchronously and since we will submit the zone
1744 * reset synchronously, wait until previously submitted
1745 * write requests have completed before issuing a
1750 if (zbd_reset_zone(td, f, zb) < 0)
1753 if (zb->capacity < min_bs) {
1754 td_verror(td, EINVAL, "ZCAP is less min_bs");
1755 log_err("zone capacity %llu smaller than minimum block size %d\n",
1756 (unsigned long long)zb->capacity,
1761 /* Make writes occur at the write pointer */
1762 assert(!zbd_zone_full(f, zb, min_bs));
1763 io_u->offset = zb->wp;
1764 if (!is_valid_offset(f, io_u->offset)) {
1765 td_verror(td, EINVAL, "invalid WP value");
1766 dprint(FD_ZBD, "%s: dropped request with offset %llu\n",
1767 f->file_name, io_u->offset);
1771 * Make sure that the buflen is a multiple of the minimal
1772 * block size. Give up if shrinking would make the request too
1775 new_len = min((unsigned long long)io_u->buflen,
1776 zbd_zone_capacity_end(zb) - io_u->offset);
1777 new_len = new_len / min_bs * min_bs;
1778 if (new_len == io_u->buflen)
1780 if (new_len >= min_bs) {
1781 io_u->buflen = new_len;
1782 dprint(FD_IO, "Changed length from %u into %llu\n",
1783 orig_len, io_u->buflen);
1786 td_verror(td, EIO, "zone remainder too small");
1787 log_err("zone remainder %lld smaller than min block size %d\n",
1788 (zbd_zone_capacity_end(zb) - io_u->offset), min_bs);
1794 case DDIR_SYNC_FILE_RANGE:
1805 assert(zb->cond != ZBD_ZONE_COND_OFFLINE);
1806 assert(!io_u->zbd_queue_io);
1807 assert(!io_u->zbd_put_io);
1808 io_u->zbd_queue_io = zbd_queue_io;
1809 io_u->zbd_put_io = zbd_put_io;
1811 * Since we return with the zone lock still held,
1812 * add an annotation to let Coverity know that it
1815 /* coverity[missing_unlock] */
1819 if (zb && zb->has_wp)
1824 /* Return a string with ZBD statistics */
1825 char *zbd_write_status(const struct thread_stat *ts)
1829 if (asprintf(&res, "; %llu zone resets", (unsigned long long) ts->nr_zone_resets) < 0)