(ZFS) zpool replace weirdness
Pawel Jakub Dawidek
pjd at FreeBSD.org
Tue Jul 24 15:37:19 UTC 2007
On Mon, Jul 23, 2007 at 11:17:53PM +0200, Sverre Svenningsen wrote:
> I've been playing around with zfs for a bit, and ran into a problem
> where i corrupted an entire drive (on purpose) by way of dd
> if=/dev/urandom of=/dev/ad12 .. as expected, the zpool noticed:
>
> su-2.05b# zpool status
> pool: array1
> state: ONLINE
> status: One or more devices could not be used because the label is missing or
> invalid. Sufficient replicas exist for the pool to continue
> functioning in a degraded state.
> action: Replace the device using 'zpool replace'.
> see: http://www.sun.com/msg/ZFS-8000-4J
> scrub: resilver completed with 0 errors on Mon Jul 23 23:05:53 2007
> config:
>
> NAME STATE READ WRITE CKSUM
> array1 ONLINE 0 0 0
> raidz1 ONLINE 0 0 0
> ad10 ONLINE 0 0 0
> ad12 UNAVAIL 0 0 0 corrupted data
> ad14 ONLINE 0 0 0
> ad16 ONLINE 0 0 0
> raidz1 ONLINE 0 0 0
> ad18 ONLINE 0 0 0
> ad20 ONLINE 0 0 0
> ad22 ONLINE 0 0 0
> ad24 ONLINE 0 0 0
>
> errors: No known data errors
>
>
> now i want to resilver that disk, but the problem is this:
>
> su-2.05b# zpool replace -f array1 ad12
> invalid vdev specification
> the following errors must be manually repaired:
> ad12 is in use (r1w1e1)
>
> but nothing is using that disk as far as i can tell! has anyone
> successfully done this?
It just works here, but the version I'm using is not yet committed,
maybe there was a fix in OpenSolaris.
You could try removing /boot/zfs/zpool.cache.
> would it be better to use slices instead of whole disks for zfs on
> freebsd? i want to get some experience with this so that i know
> what not to do when a disk breaks for real :)
Whole disks are fine.
--
Pawel Jakub Dawidek http://www.wheel.pl
pjd at FreeBSD.org http://www.FreeBSD.org
FreeBSD committer Am I Evil? Yes, I Am!
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