On Jan 29, 2011, at 12:58 PM, Mike Tancsa wrote:
> On 1/29/2011 12:57 PM, Richard Elling wrote:
>>> 0(offsite)# zpool status
>>> pool: tank1
>>> state: UNAVAIL
>>> status: One or more devices could not be opened. There are insufficient
>>> replicas for the pool to continue functioning.
>>> action: Attach the missing device and online it using 'zpool online'.
>>> see: http://www.sun.com/msg/ZFS-8000-3C
>>> scrub: none requested
>>> config:
>>>
>>> NAME STATE READ WRITE CKSUM
>>> tank1 UNAVAIL 0 0 0 insufficient replicas
>>> raidz1 ONLINE 0 0 0
>>> ad0 ONLINE 0 0 0
>>> ad1 ONLINE 0 0 0
>>> ad4 ONLINE 0 0 0
>>> ad6 ONLINE 0 0 0
>>> raidz1 ONLINE 0 0 0
>>> ada4 ONLINE 0 0 0
>>> ada5 ONLINE 0 0 0
>>> ada6 ONLINE 0 0 0
>>> ada7 ONLINE 0 0 0
>>> raidz1 UNAVAIL 0 0 0 insufficient replicas
>>> ada0 UNAVAIL 0 0 0 cannot open
>>> ada1 UNAVAIL 0 0 0 cannot open
>>> ada2 UNAVAIL 0 0 0 cannot open
>>> ada3 UNAVAIL 0 0 0 cannot open
>>> 0(offsite)#
>>
>> This is usually easily solved without data loss by making the
>> disks available again. Can you read anything from the disks using
>> any program?
>
> Thats the strange thing, the disks are readable. The drive cage just
> reset a couple of times prior to the crash. But they seem OK now. Same
> order as well.
>
> # camcontrol devlist
> <WDC WD\021501FASR\25500W2B0 \200 0956> at scbus0 target 0 lun 0
> (pass0,ada0)
> <WDC WD\021501FASR\25500W2B0 \200 05.01D\0205> at scbus0 target 1 lun 0
> (pass1,ada1)
> <WDC WD\021501FASR\25500W2B0 \200 05.01D\0205> at scbus0 target 2 lun 0
> (pass2,ada2)
> <WDC WD\021501FASR\25500W2B0 \200 05.01D\0205> at scbus0 target 3 lun 0
> (pass3,ada3)
>
>
> # dd if=/dev/ada2 of=/dev/null count=20 bs=1024
> 20+0 records in
> 20+0 records out
> 20480 bytes transferred in 0.001634 secs (12534561 bytes/sec)
> 0(offsite)#
The next step is to run "zdb -l" and look for all 4 labels. Something like:
zdb -l /dev/ada2
If all 4 labels exist for each drive and appear intact, then look more closely
at how the OS locates the vdevs. If you can't solve the "UNAVAIL" problem,
you won't be able to import the pool.
-- richard
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