On Tue, Mar 30, 2010 at 10:42 PM, Eric Schrock <[email protected]> wrote:
>
> On Mar 30, 2010, at 5:39 PM, Peter Tribble wrote:
>
>> I have a pool (on an X4540 running S10U8) in which a disk failed, and the
>> hot spare kicked in. That's perfect. I'm happy.
>>
>> Then a second disk fails.
>>
>> Now, I've replaced the first failed disk, and it's resilvered and I have my
>> hot spare back.
>>
>> But: why hasn't it used the spare to cover the other failed drive? And
>> can I hotspare it manually? I could do a straight replace, but that
>> isn't quite the same thing.
>
> Hot spares are only activated in response to a fault received by the
> zfs-retire FMA agent. There is no notion that the spares should be
> re-evaluated when they become available at a later point in time. Certainly
> a reasonable RFE, but not something ZFS does today.
Definitely an RFE I would like.
> You can 'zpool attach' the spare like a normal device - that's all that the
> retire agent is doing under the hood.
So, given:
NAME STATE READ WRITE CKSUM
images DEGRADED 0 0 0
raidz1 DEGRADED 0 0 0
c2t0d0 FAULTED 4 0 0 too many errors
c3t0d0 ONLINE 0 0 0
c4t0d0 ONLINE 0 0 0
c5t0d0 ONLINE 0 0 0
c0t1d0 ONLINE 0 0 0
c1t1d0 ONLINE 0 0 0
c2t1d0 ONLINE 0 0 0
c3t1d0 ONLINE 0 0 0
c4t1d0 ONLINE 0 0 0
spares
c5t7d0 AVAIL
then it would be this?
zpool attach images c2t0d0 c5t7d0
which I had considered, but the man page for attach says "The
existing device cannot be part of a raidz configuration."
If I try that it fails, saying:
"/invalid vdev specification
use '-f' to override the following errors:
dev/dsk/c5t7d0s0 is reserved as a hot spare for ZFS pool images.
Please see zpool(1M)."
Thanks!
--
-Peter Tribble
http://www.petertribble.co.uk/ - http://ptribble.blogspot.com/
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