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Add vdev property to disable vdev scheduler

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Added vdev property to disable the vdev scheduler.
The intention behind this property is to improve IOPS
performance when using o_direct.

Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Signed-off-by: MigeljanImeri <ImeriMigel@gmail.com>
Closes #17358
This commit is contained in:
MigeljanImeri
2026-02-23 12:34:33 -05:00
committed by GitHub
parent d2f5cb3a50
commit 4975430cf5
14 changed files with 206 additions and 2 deletions
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module/zfs/vdev.c
+16
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@@ -767,6 +767,8 @@ vdev_alloc_common(spa_t *spa, uint_t id, uint64_t guid, vdev_ops_t *ops)
vd->vdev_slow_io_n = vdev_prop_default_numeric(VDEV_PROP_SLOW_IO_N);
vd->vdev_slow_io_t = vdev_prop_default_numeric(VDEV_PROP_SLOW_IO_T);
vd->vdev_scheduler = vdev_prop_default_numeric(VDEV_PROP_SCHEDULER);
list_link_init(&vd->vdev_config_dirty_node);
list_link_init(&vd->vdev_state_dirty_node);
list_link_init(&vd->vdev_initialize_node);
@@ -3972,6 +3974,12 @@ vdev_load(vdev_t *vd)
if (error && error != ENOENT)
vdev_dbgmsg(vd, "vdev_load: zap_lookup(zap=%llu) "
"failed [error=%d]", (u_longlong_t)zapobj, error);
error = vdev_prop_get_int(vd, VDEV_PROP_SCHEDULER,
&vd->vdev_scheduler);
if (error && error != ENOENT)
vdev_dbgmsg(vd, "vdev_load: zap_lookup(zap=%llu) "
"failed [error=%d]", (u_longlong_t)zapobj, error);
}
/*
@@ -6259,6 +6267,13 @@ vdev_prop_set(vdev_t *vd, nvlist_t *innvl, nvlist_t *outnvl)
}
vd->vdev_slow_io_t = intval;
break;
case VDEV_PROP_SCHEDULER:
if (nvpair_value_uint64(elem, &intval) != 0) {
error = EINVAL;
break;
}
vd->vdev_scheduler = intval;
break;
default:
/* Most processing is done in vdev_props_set_sync */
break;
@@ -6664,6 +6679,7 @@ vdev_prop_get(vdev_t *vd, nvlist_t *innvl, nvlist_t *outnvl)
case VDEV_PROP_IO_T:
case VDEV_PROP_SLOW_IO_N:
case VDEV_PROP_SLOW_IO_T:
case VDEV_PROP_SCHEDULER:
err = vdev_prop_get_int(vd, prop, &intval);
if (err && err != ENOENT)
break;