When you do 'zfs import' it lists you available pools in a system skipping destroyed pools. After applying below changes you will also see destroyed pools which are marked '(DESTROYED)' in a state property. Using 'zpool import -f
bash-3.00# zpool create backup c2t0d0p0
bash-3.00# zfs create backup/d1
bash-3.00# zfs create backup/d2
bash-3.00# zfs list
NAME USED AVAIL REFER MOUNTPOINT
backup 376K 37.0G 100K /backup
backup/d1 98.5K 37.0G 98.5K /backup/d1
backup/d2 98.5K 37.0G 98.5K /backup/d2
bash-3.00#
bash-3.00# df -h -F zfs
Filesystem size used avail capacity Mounted on
backup 37G 99K 37G 1% /backup
backup/d1 37G 98K 37G 1% /backup/d1
backup/d2 37G 98K 37G 1% /backup/d2
bash-3.00#
bash-3.00# cp -rp /usr/kernel/ /backup/d1/
bash-3.00# cp -rp /usr/platform/ /backup/d2/
bash-3.00#
bash-3.00# df -h -F zfs
Filesystem size used avail capacity Mounted on
backup 37G 99K 37G 1% /backup
backup/d1 37G 3.4M 37G 1% /backup/d1
backup/d2 37G 849K 37G 1% /backup/d2
bash-3.00#
bash-3.00# zpool destroy backup
bash-3.00# zpool list
no pools available
bash-3.00#
bash-3.00# zpool import
pool: backup
id: 6753094033596765985
state: ONLINE (DESTROYED)
action: The pool can be imported using its name or numeric identifier. The
pool was destroyed, but can be imported using the '-f' flag.
config:
backup ONLINE
c2t0d0p0 ONLINE
bash-3.00#
bash-3.00# zpool import -f backup
bash-3.00#
bash-3.00# zpool list
NAME SIZE USED AVAIL CAP HEALTH ALTROOT
backup 37.2G 4.45M 37.2G 0% ONLINE -
bash-3.00# zfs list
NAME USED AVAIL REFER MOUNTPOINT
backup 4.42M 37.0G 100K /backup
backup/d1 3.38M 37.0G 3.38M /backup/d1
backup/d2 849K 37.0G 849K /backup/d2
bash-3.00# df -h -F zfs
Filesystem size used avail capacity Mounted on
backup 37G 99K 37G 1% /backup
backup/d1 37G 3.4M 37G 1% /backup/d1
backup/d2 37G 849K 37G 1% /backup/d2
bash-3.00#
############################
#Changes to snv_29 source tree.#
############################
bash-3.00$ diff -u lib/libzfs/common/libzfs_import.c.orig lib/libzfs/common/libzfs_import.c
--- lib/libzfs/common/libzfs_import.c.orig Tue Jan 31 23:51:06 2006
+++ lib/libzfs/common/libzfs_import.c Tue Jan 31 23:51:58 2006
@@ -547,7 +547,7 @@
}
if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_STATE,
- &state) != 0 || state > POOL_STATE_EXPORTED) {
+ &state) != 0 || state > POOL_STATE_DESTROYED) {
nvlist_free(config);
continue;
}
bash-3.00$
bash-3.00$ diff -u uts/common/fs/zfs/vdev.c.orig uts/common/fs/zfs/vdev.c
--- uts/common/fs/zfs/vdev.c.orig Sat Dec 17 06:15:08 2005
+++ uts/common/fs/zfs/vdev.c Wed Feb 1 01:24:58 2006
@@ -1147,7 +1147,7 @@
}
if (state != POOL_STATE_ACTIVE &&
- (!import || state != POOL_STATE_EXPORTED)) {
+ (!import || (state != POOL_STATE_EXPORTED && state != POOL_STATE_DESTROYED))) {
dprintf("pool state not active (%llu)\n", state);
nvlist_free(label);
return (EBADF);
bash-3.00$
bash-3.00$ diff -u cmd/zpool/zpool_main.c.orig cmd/zpool/zpool_main.c
--- cmd/zpool/zpool_main.c.orig Sat Dec 17 06:16:00 2005
+++ cmd/zpool/zpool_main.c Wed Feb 1 01:52:58 2006
@@ -799,7 +799,10 @@
(void) printf(" pool: %s\n", name);
(void) printf(" id: %llu\n", guid);
- (void) printf(" state: %s\n", health);
+ (void) printf(" state: %s", health);
+ if (pool_state == POOL_STATE_DESTROYED)
+ (void) printf(" (DESTROYED)");
+ (void) printf("\n");
switch (reason) {
case ZPOOL_STATUS_MISSING_DEV_R:
@@ -832,7 +835,10 @@
if (strcmp(health, gettext("ONLINE")) == 0) {
(void) printf(gettext("action: The pool can be imported"
" using its name or numeric identifier."));
- if (pool_state != POOL_STATE_EXPORTED)
+ if (pool_state == POOL_STATE_DESTROYED)
+ (void) printf(gettext(" The\n\tpool was destroyed, "
+ "but can be imported using the '-f' flag.\n"));
+ else if (pool_state != POOL_STATE_EXPORTED)
(void) printf(gettext(" The\n\tpool may be active on "
"on another system, but can be imported using\n\t"
"the '-f' flag.\n"));
@@ -842,7 +848,10 @@
(void) printf(gettext("action: The pool can be imported "
"despite missing or damaged devices. The\n\tfault "
"tolerance of the pool may be compromised if imported."));
- if (pool_state != POOL_STATE_EXPORTED)
+ if (pool_state == POOL_STATE_DESTROYED)
+ (void) printf(gettext(" The\n\tpool was destroyed, "
+ "but can be imported using the '-f' flag.\n"));
+ else if (pool_state != POOL_STATE_EXPORTED)
(void) printf(gettext(" The\n\tpool may be active on "
"on another system, but can be imported using\n\t"
"the '-f' flag.\n"));
bash-3.00$
2 comments:
Hi Milek
Thanks for your wonderful blog. I'm struggling to get a script, which is to generate the User home directory usage in a NFS server, which is mounted on different NAS servers, in NIS
can you give me some input,where can i find some sample script...
Thanks a lot
best regards
VJ
You saved my data. Can't thank you enough.
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