int i, j, k;
for_each_td(td, i) {
+ if (td_trim(td) &&
+ (td->o.min_bs[DDIR_TRIM] != td->o.max_bs[DDIR_TRIM] ||
+ td->o.bssplit_nr[DDIR_TRIM])) {
+ log_info("bsrange and bssplit are not allowed for trim with zonemode=zbd\n");
+ return false;
+ }
for_each_file(td, f, j) {
uint64_t zone_size;
if (!f->zbd_info)
continue;
zone_size = f->zbd_info->zone_size;
+ if (td_trim(td) && td->o.bs[DDIR_TRIM] != zone_size) {
+ log_info("%s: trim block size %llu is not the zone size %llu\n",
+ f->file_name, td->o.bs[DDIR_TRIM],
+ (unsigned long long)zone_size);
+ return false;
+ }
for (k = 0; k < FIO_ARRAY_SIZE(td->o.bs); k++) {
if (td->o.verify != VERIFY_NONE &&
zone_size % td->o.bs[k] != 0) {
out:
/* Ensure that the limit is not larger than FIO's internal limit */
- zbd->max_open_zones = min_not_zero(zbd->max_open_zones,
- (uint32_t) ZBD_MAX_OPEN_ZONES);
+ if (zbd->max_open_zones > ZBD_MAX_OPEN_ZONES) {
+ td_verror(td, EINVAL, "'max_open_zones' value is too large");
+ log_err("'max_open_zones' value is larger than %u\n", ZBD_MAX_OPEN_ZONES);
+ return -EINVAL;
+ }
+
dprint(FD_ZBD, "%s: using max open zones limit: %"PRIu32"\n",
f->file_name, zbd->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);
+
+ /*
+ * The per job max open zones limit cannot be used without a
+ * global max open zones limit. (As the tracking of open zones
+ * is disabled when there is no global max open zones limit.)
+ */
+ if (td->o.job_max_open_zones && !zbd->max_open_zones) {
+ log_err("'job_max_open_zones' cannot be used without a global open zones limit\n");
return 1;
}
+ /*
+ * zbd->max_open_zones is the global limit shared for all jobs
+ * that target the same zoned block device. Force sync the per
+ * thread global limit with the actual global limit. (The real
+ * per thread/job limit is stored in td->o.job_max_open_zones).
+ */
+ td->o.max_open_zones = zbd->max_open_zones;
+
for (zi = f->min_zone; zi < f->max_zone; zi++) {
z = &zbd->zone_info[zi];
if (z->cond != ZBD_ZONE_COND_IMP_OPEN &&
struct zoned_block_device_info *zbdi = f->zbd_info;
int i;
+ /* This function should never be called when zbdi->max_open_zones == 0 */
+ assert(zbdi->max_open_zones);
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);
if (td->o.verify != VERIFY_NONE && zbd_zone_full(f, z, min_bs))
return false;
+ /*
+ * zbdi->max_open_zones == 0 means that there is no limit on the maximum
+ * number of open zones. In this case, do no track open zones in
+ * zbdi->open_zones array.
+ */
+ if (!zbdi->max_open_zones)
+ return true;
+
pthread_mutex_lock(&zbdi->mutex);
if (is_zone_open(td, f, zone_idx)) {
/*
return res;
}
-/* Anything goes as long as it is not a constant. */
+/* Return random zone index for one of the open zones. */
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;
+ return (io_u->offset - f->file_offset) * f->zbd_info->num_open_zones /
+ f->io_size;
+}
+
+static bool any_io_in_flight(void)
+{
+ struct thread_data *td;
+ int i;
+
+ for_each_td(td, i) {
+ if (td->io_u_in_flight)
+ return true;
+ }
+
+ return false;
}
/*
uint32_t zone_idx, new_zone_idx;
int i;
bool wait_zone_close;
+ bool in_flight;
+ bool should_retry = true;
assert(is_valid_offset(f, io_u->offset));
- if (td->o.max_open_zones || td->o.job_max_open_zones) {
+ if (zbdi->max_open_zones || td->o.job_max_open_zones) {
/*
* This statement accesses zbdi->open_zones[] on purpose
* without locking.
pthread_mutex_lock(&zbdi->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)
+ zbdi->max_open_zones == 0 && td->o.job_max_open_zones == 0)
goto examine_zone;
if (zbdi->num_open_zones == 0) {
dprint(FD_ZBD, "%s(%s): no zones are open\n",
/* Check if number of open zones reaches one of limits. */
wait_zone_close =
zbdi->num_open_zones == f->max_zone - f->min_zone ||
- (td->o.max_open_zones &&
- zbdi->num_open_zones == td->o.max_open_zones) ||
+ (zbdi->max_open_zones &&
+ zbdi->num_open_zones == zbdi->max_open_zones) ||
(td->o.job_max_open_zones &&
td->num_open_zones == td->o.job_max_open_zones);
io_u_quiesce(td);
}
+retry:
/* Zone 'z' is full, so try to open a new zone. */
for (i = f->io_size / zbdi->zone_size; i > 0; i--) {
zone_idx++;
goto out;
pthread_mutex_lock(&zbdi->mutex);
}
+
+ /*
+ * When any I/O is in-flight or when all I/Os in-flight get completed,
+ * the I/Os might have closed zones then retry the steps to open a zone.
+ * Before retry, call io_u_quiesce() to complete in-flight writes.
+ */
+ in_flight = any_io_in_flight();
+ if (in_flight || should_retry) {
+ dprint(FD_ZBD, "%s(%s): wait zone close and retry open zones\n",
+ __func__, f->file_name);
+ pthread_mutex_unlock(&zbdi->mutex);
+ zone_unlock(z);
+ io_u_quiesce(td);
+ zone_lock(td, f, z);
+ should_retry = in_flight;
+ goto retry;
+ }
+
pthread_mutex_unlock(&zbdi->mutex);
zone_unlock(z);
dprint(FD_ZBD, "%s(%s): did not open another zone\n", __func__,
}
/*
- * 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.
+ * Find another zone which has @min_bytes of readable data. 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,
+zbd_find_zone(struct thread_data *td, struct io_u *io_u, uint32_t min_bytes,
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);
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)
+ if (z1->start + min_bytes <= z1->wp)
return z1;
if (z1->has_wp)
zone_unlock(z1);
z2->cond != ZBD_ZONE_COND_OFFLINE) {
if (z2->has_wp)
zone_lock(td, f, z2);
- if (z2->start + min_bs <= z2->wp)
+ if (z2->start + min_bytes <= z2->wp)
return z2;
if (z2->has_wp)
zone_unlock(z2);
}
}
- dprint(FD_ZBD, "%s: adjusting random read offset failed\n",
- f->file_name);
+ dprint(FD_ZBD, "%s: no zone has %d bytes of readable data\n",
+ f->file_name, min_bytes);
return NULL;
}
pthread_mutex_unlock(&zbd_info->mutex);
z->wp = zone_end;
break;
- case DDIR_TRIM:
- assert(z->wp == z->start);
- break;
default:
break;
}
((!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);
+ zb = zbd_find_zone(td, io_u, min_bs, zb, zl);
if (!zb) {
dprint(FD_ZBD,
"%s: zbd_find_zone(%lld, %llu) failed\n",
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) {
(zbd_zone_capacity_end(zb) - io_u->offset), min_bs);
goto eof;
case DDIR_TRIM:
- /* fall-through */
+ /* Check random trim targets a non-empty zone */
+ if (!td_random(td) || zb->wp > zb->start)
+ goto accept;
+
+ /* Find out a non-empty zone to trim */
+ zone_unlock(zb);
+ zl = get_zone(f, f->max_zone);
+ zb = zbd_find_zone(td, io_u, 1, zb, zl);
+ if (zb) {
+ io_u->offset = zb->start;
+ dprint(FD_ZBD, "%s: found new zone(%lld) for trim\n",
+ f->file_name, io_u->offset);
+ goto accept;
+ }
+ goto eof;
case DDIR_SYNC:
+ /* fall-through */
case DDIR_DATASYNC:
case DDIR_SYNC_FILE_RANGE:
case DDIR_WAIT:
return NULL;
return res;
}
+
+/**
+ * zbd_do_io_u_trim - If reset zone is applicable, do reset zone instead of trim
+ *
+ * @td: FIO thread data.
+ * @io_u: FIO I/O unit.
+ *
+ * It is assumed that z->mutex is already locked.
+ * Return io_u_completed when reset zone succeeds. Return 0 when the target zone
+ * does not have write pointer. On error, return negative errno.
+ */
+int zbd_do_io_u_trim(const struct thread_data *td, struct io_u *io_u)
+{
+ struct fio_file *f = io_u->file;
+ struct fio_zone_info *z;
+ uint32_t zone_idx;
+ int ret;
+
+ zone_idx = zbd_zone_idx(f, io_u->offset);
+ z = get_zone(f, zone_idx);
+
+ if (!z->has_wp)
+ return 0;
+
+ if (io_u->offset != z->start) {
+ log_err("Trim offset not at zone start (%lld)\n", io_u->offset);
+ return -EINVAL;
+ }
+
+ ret = zbd_reset_zone((struct thread_data *)td, f, z);
+ if (ret < 0)
+ return ret;
+
+ return io_u_completed;
+}