Hey guys,
I've managed to end up with a corrupted zpool that I can no longer import
on Solaris 11.1. Luckily I do have a backup of the most important stuff,
but I'd still like to recover the remainder if possible.
The pool was a 4-disk raidz1 with a ZIL (unmirrored).
>From what I can tell, it looks like one of the devices caused the SAS HBA
(LSI1068E) to reset and offline the pool. Upon reboot the pool wouldn't
import and "zpool status" was showing that all disks except 1 were
unavailable. However, I think this was a result of the HBA reset that
caused solaris to re-enumerate the devices. At this point I exported the
pool and attempted to reimport - I probably shouldn't have because it has
now led to a condition where two disks have the same GUID.
root@solaris:~# zdb -l /dev/dsk/c7t5d0s0 |egrep "(children|guid)"
pool_guid: 7650914121155923652
top_guid: 4244192714700669945
guid: 2113359054019808692
vdev_children: 2
guid: 4244192714700669945
children[0]:
guid: 16334042155336894037
children[1]:
guid: 2113359054019808692
children[2]:
guid: 11196011208380299867
children[3]:
guid: 15149956586209127431
root@solaris:~# zdb -l /dev/dsk/c7t6d0s0 |egrep "(children|guid)"
pool_guid: 7650914121155923652
top_guid: 4244192714700669945
guid: 11196011208380299867
vdev_children: 2
guid: 4244192714700669945
children[0]:
guid: 16334042155336894037
children[1]:
guid: 2113359054019808692
children[2]:
guid: 11196011208380299867
children[3]:
guid: 15149956586209127431
root@solaris:~# zdb -l /dev/dsk/c7t7d0s0 |egrep "(children|guid)"
pool_guid: 7650914121155923652
top_guid: 4244192714700669945
guid: 2113359054019808692
vdev_children: 2
guid: 4244192714700669945
children[0]:
guid: 16334042155336894037
children[1]:
guid: 2113359054019808692
children[2]:
guid: 11196011208380299867
children[3]:
guid: 15149956586209127431
root@solaris:~# zdb -l /dev/dsk/c7t8d0s0 |egrep "(children|guid)"
pool_guid: 7650914121155923652
top_guid: 4244192714700669945
guid: 15149956586209127431
vdev_children: 2
guid: 4244192714700669945
children[0]:
guid: 16334042155336894037
children[1]:
guid: 2113359054019808692
children[2]:
guid: 11196011208380299867
children[3]:
guid: 15149956586209127431
>From the above, c7t5d0 and c7t7d0 both have a guid of 2113359054019808692.
Looks like one of these should be 16334042155336894037 instead.
zpool import gives me the following output (I'm attempting to import this
on another system which is why there's a reference to c9t4d0, aka guid:
16334042155336894037).
root@solaris:~# zpool import
pool: bucket
id: 7650914121155923652
state: UNAVAIL
status: The pool was last accessed by another system.
action: The pool cannot be imported due to unavailable devices or data.
see: http://support.oracle.com/msg/ZFS-8000-EY
config:
bucket UNAVAIL insufficient replicas
raidz1-0 DEGRADED
c9t4d0 UNAVAIL corrupted data
c7t7d0 ONLINE
c7t6d0 ONLINE
c7t8d0 ONLINE
device details:
c9t4d0 UNAVAIL corrupted data
status: ZFS detected errors on this device.
The device has bad label or disk contents.
Being raidz1, I thought I would be able to import the pool with 1 device
missing, but no matter what I try it simply won't import due to
"insufficient replicas"
Is anyone aware of a method to modify the on-disk metadata and change the
device guid?
Any help is greatly appreciated!
Cheers,
Josh
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