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Update vdev devid and physpath if changed between imports 

If devid or physpath for a vdev changes between imports, ensure it is
updated to the new value.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Ameer Hamza <ahamza@ixsystems.com>
Closes #15816
This commit is contained in:
Ameer Hamza 2024-01-27 03:24:35 +05:00 committed by Brian Behlendorf
parent 9ad150446f
commit dd3a0a2715
1 changed files with 27 additions and 13 deletions
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40
module/zfs/vdev.c
View File

@ -2484,23 +2484,37 @@ vdev_validate(vdev_t *vd)
return (0);
}
static void
vdev_update_path(const char *prefix, char *svd, char **dvd, uint64_t guid)
{
if (svd != NULL && *dvd != NULL) {
if (strcmp(svd, *dvd) != 0) {
zfs_dbgmsg("vdev_copy_path: vdev %llu: %s changed "
"from '%s' to '%s'", (u_longlong_t)guid, prefix,
*dvd, svd);
spa_strfree(*dvd);
*dvd = spa_strdup(svd);
}
} else if (svd != NULL) {
*dvd = spa_strdup(svd);
zfs_dbgmsg("vdev_copy_path: vdev %llu: path set to '%s'",
(u_longlong_t)guid, *dvd);
}
}
static void
vdev_copy_path_impl(vdev_t *svd, vdev_t *dvd)
{
char *old, *new;
if (svd->vdev_path != NULL && dvd->vdev_path != NULL) {
if (strcmp(svd->vdev_path, dvd->vdev_path) != 0) {
zfs_dbgmsg("vdev_copy_path: vdev %llu: path changed "
"from '%s' to '%s'", (u_longlong_t)dvd->vdev_guid,
dvd->vdev_path, svd->vdev_path);
spa_strfree(dvd->vdev_path);
dvd->vdev_path = spa_strdup(svd->vdev_path);
}
} else if (svd->vdev_path != NULL) {
dvd->vdev_path = spa_strdup(svd->vdev_path);
zfs_dbgmsg("vdev_copy_path: vdev %llu: path set to '%s'",
(u_longlong_t)dvd->vdev_guid, dvd->vdev_path);
}
vdev_update_path("vdev_path", svd->vdev_path, &dvd->vdev_path,
dvd->vdev_guid);
vdev_update_path("vdev_devid", svd->vdev_devid, &dvd->vdev_devid,
dvd->vdev_guid);
vdev_update_path("vdev_physpath", svd->vdev_physpath,
&dvd->vdev_physpath, dvd->vdev_guid);
/*
* Our enclosure sysfs path may have changed between imports