Date: Tue, 25 Sep 2012 13:18:57 -0700 From: "Jose A. Lombera" <jose@lajni.com> To: <freebsd-current@freebsd.org> Subject: zfs + hast recreate raid5 can this be with out losing data. Message-ID: <00f501cd9b5a$ff9cf210$fed6d630$@lajni.com>
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Recently one of my hdd (disk2) from pool went bad.
I was able to replaced it, but the zpool was never able to bring it online.
[root@san1 /usr/home/jose]# zpool status -x
pool: tank
state: DEGRADED
status: One or more devices could not be opened. Sufficient replicas exist
for
the pool to continue functioning in a degraded state.
action: Attach the missing device and online it using 'zpool online'.
see: http://www.sun.com/msg/ZFS-8000-2Q
scan: scrub repaired 0 in 12h4m with 0 errors on Sun Sep 23 19:14:19 2012
config:
NAME STATE READ WRITE CKSUM
tank DEGRADED 0 0 0
raidz1-0 DEGRADED 0 0 0
hast/disk1 ONLINE 0 0 0
11919832608590631234 UNAVAIL 0 0 0 was
/dev/dsk/hast/disk2
hast/disk3 ONLINE 0 0 0
hast/disk4 ONLINE 0 0 0
hast/disk5 ONLINE 0 0 0
hast/disk6 ONLINE 0 0 0
hast/disk7 ONLINE 0 0 0
hast/disk8 ONLINE 0 0 0
hast/disk9 ONLINE 0 0 0
hast/disk10 ONLINE 0 0 0
errors: No known data errors
Thinking that was due to HASTD running I stopped it, but did not stop so I
killed it.
This caused the pool to disappeared.
Thinking that I might have to do it from the RAID LSI Controller, I shut
down the system and went into LSI configuration.
I have configured Raid0 for every sata hdd, so when I replaced the bad disk
(disk2) Raid0 (LSI) moved the disk one level down.
The new disk just replaced (disk2) took the place of the disk10 (last one in
the configuration, raid0 thinks is a new disk)in the OS and disk3 became
disk2 and so on.
I have to find the way to bring disk2 back online.
11919832608590631234 UNAVAIL 0 0 0 was
/dev/dsk/hast/disk2
For some reason zpool online doesn't let me do it.
[root@san1 /usr/home/jose]# zpool online tank /dev/dsk/hast/disk2
warning: device '/dev/dsk/hast/disk2' onlined, but remains in faulted state
use 'zpool replace' to replace devices that are no longer present
[root@san1 /usr/home/jose]#
Do you have any idea how can I do that.
Or do I have to do this, to recreate the raid?
zpool create zhast raidz1 /dev/hast/disk1 /dev/hast/disk2
/dev/hast/disk3
someone from support told that I can recreate the RAID5 without messing the
data?
Would this fix the disk2 that zpool can't see.
No sure if this true.
Can someone with ZFS and HAST experience help me out here.
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