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Extend aux label to add path information 

Pool import logic uses vdev paths, so it makes sense to add path
information on AUX vdev as well.

Reviewed-by: Umer Saleem <usaleem@ixsystems.com>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Ameer Hamza <ahamza@ixsystems.com>
Closes #15737
This commit is contained in:
Ameer Hamza 2024-01-04 19:32:53 +05:00 committed by Brian Behlendorf
parent d9885b3776
commit 2df2a58dc1
1 changed files with 31 additions and 23 deletions
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50
module/zfs/vdev_label.c
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@ -1031,6 +1031,10 @@ vdev_label_init(vdev_t *vd, uint64_t crtxg, vdev_labeltype_t reason)
int error;
uint64_t spare_guid = 0, l2cache_guid = 0;
int flags = ZIO_FLAG_CONFIG_WRITER | ZIO_FLAG_CANFAIL;
boolean_t reason_spare = (reason == VDEV_LABEL_SPARE || (reason ==
VDEV_LABEL_REMOVE && vd->vdev_isspare));
boolean_t reason_l2cache = (reason == VDEV_LABEL_L2CACHE || (reason ==
VDEV_LABEL_REMOVE && vd->vdev_isl2cache));
ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL);
@ -1116,34 +1120,20 @@ vdev_label_init(vdev_t *vd, uint64_t crtxg, vdev_labeltype_t reason)
* really part of an active pool just yet. The labels will
* be written again with a meaningful txg by spa_sync().
*/
if (reason == VDEV_LABEL_SPARE ||
(reason == VDEV_LABEL_REMOVE && vd->vdev_isspare)) {
if (reason_spare || reason_l2cache) {
/*
* For inactive hot spares, we generate a special label that
* identifies as a mutually shared hot spare. We write the
* label if we are adding a hot spare, or if we are removing an
* active hot spare (in which case we want to revert the
* labels).
* For inactive hot spares and level 2 ARC devices, we generate
* a special label that identifies as a mutually shared hot
* spare or l2cache device. We write the label in case of
* addition or removal of hot spare or l2cache vdev (in which
* case we want to revert the labels).
*/
VERIFY(nvlist_alloc(&label, NV_UNIQUE_NAME, KM_SLEEP) == 0);
VERIFY(nvlist_add_uint64(label, ZPOOL_CONFIG_VERSION,
spa_version(spa)) == 0);
VERIFY(nvlist_add_uint64(label, ZPOOL_CONFIG_POOL_STATE,
POOL_STATE_SPARE) == 0);
VERIFY(nvlist_add_uint64(label, ZPOOL_CONFIG_GUID,
vd->vdev_guid) == 0);
} else if (reason == VDEV_LABEL_L2CACHE ||
(reason == VDEV_LABEL_REMOVE && vd->vdev_isl2cache)) {
/*
* For level 2 ARC devices, add a special label.
*/
VERIFY(nvlist_alloc(&label, NV_UNIQUE_NAME, KM_SLEEP) == 0);
VERIFY(nvlist_add_uint64(label, ZPOOL_CONFIG_VERSION,
spa_version(spa)) == 0);
VERIFY(nvlist_add_uint64(label, ZPOOL_CONFIG_POOL_STATE,
POOL_STATE_L2CACHE) == 0);
reason_spare ? POOL_STATE_SPARE : POOL_STATE_L2CACHE) == 0);
VERIFY(nvlist_add_uint64(label, ZPOOL_CONFIG_GUID,
vd->vdev_guid) == 0);
@ -1154,8 +1144,26 @@ vdev_label_init(vdev_t *vd, uint64_t crtxg, vdev_labeltype_t reason)
* spa->spa_l2cache->sav_config (populated in
* spa_ld_open_aux_vdevs()).
*/
if (reason_l2cache) {
VERIFY(nvlist_add_uint64(label, ZPOOL_CONFIG_ASHIFT,
vd->vdev_ashift) == 0);
}
/*
* Add path information to help find it during pool import
*/
if (vd->vdev_path != NULL) {
VERIFY(nvlist_add_string(label, ZPOOL_CONFIG_PATH,
vd->vdev_path) == 0);
}
if (vd->vdev_devid != NULL) {
VERIFY(nvlist_add_string(label, ZPOOL_CONFIG_DEVID,
vd->vdev_devid) == 0);
}
if (vd->vdev_physpath != NULL) {
VERIFY(nvlist_add_string(label, ZPOOL_CONFIG_PHYS_PATH,
vd->vdev_physpath) == 0);
}
/*
* When spare or l2cache (aux) vdev is added during pool