Hi,
I have OI-151a running on Dell PE R710 with 15 drives MD1000 DAS connected
via PERC6/E controller. The controller is configured with 15 RAID0 virtual
devices for each hard drive so the OS sees 15 drives. I know it's not ideal
but Dell doesn't have a controller that will give direct access to the
drives and work with MD1000.
Anyway, here is what I found this morning:
root@tzstor14:~# zpool status -v pool01
pool: pool01
state: DEGRADED
status: One or more devices has been removed by the administrator.
Sufficient replicas exist for the pool to continue functioning in a
degraded state.
action: Online the device using 'zpool online' or replace the device with
'zpool replace'.
scan: resilvered 71.9G in 0h36m with 0 errors on Sun Jun 24 05:37:43 2012
config:
NAME STATE READ WRITE CKSUM
pool01 DEGRADED 0 0 0
raidz1-0 DEGRADED 0 0 0
spare-0 REMOVED 0 0 0
c3t0d0 REMOVED 0 0 0
c3t14d0 ONLINE 0 0 0
c3t1d0 ONLINE 0 0 0
c3t2d0 ONLINE 0 0 0
c3t3d0 ONLINE 0 0 0
c3t4d0 ONLINE 0 0 0
c3t5d0 ONLINE 0 0 0
c3t6d0 ONLINE 0 0 0
raidz1-1 ONLINE 0 0 0
c3t7d0 ONLINE 0 0 0
c3t8d0 ONLINE 0 0 0
c3t9d0 ONLINE 0 0 0
c3t10d0 ONLINE 0 0 0
c3t11d0 ONLINE 0 0 0
c3t12d0 ONLINE 0 0 0
c3t13d0 ONLINE 0 0 0
logs
mirror-2 ONLINE 0 0 0
c2t4d0 ONLINE 0 0 0
c2t5d0 ONLINE 0 0 0
cache
c2t2d0 ONLINE 0 0 0
c2t3d0 ONLINE 0 0 0
spares
c3t14d0 INUSE currently in use
errors: No known data errors
root@tzstor14:~#
There is ton of information on the Internet about zpool failures but it's
mostly outdated and in some cases contradicting. I couldn't find anything
that applies to my case.
- What state "REMOVED" means and why the drive was put in this state?
"iostat -En" shows no errors for this drive. I can't find any indication
that the drive is bad.
- If the drive has to be replaced could somebody please confirm that the
following steps are sufficient:
* zpool offline pool01 c3t0d0
* zpool detach pool01 c3t0d0
* Physically replace the drive with a new one
* zpool add pool01 spare c3t0d0
* zpool scrub pool01
Thank you for any hints and pointers.
-- Peter
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