On Dec 25, 2007 3:19 AM, Maciej Olchowik <[EMAIL PROTECTED]> wrote:
> Hi Folks,
>
> I have 3510 disk array connected to T2000 server running:
>   SunOS 5.10 Generic_118833-33 sun4v sparc SUNW,Sun-Fire-T200
> 12 disks (300G each) is exported from array and ZFS is used
> to manage them (raidz with one hot spare).
>
> Few days ago we had a disk failure. First problem was that hot
> spare hasn't automatically kicked in, so I have run zpool replace
> manually - resilvering started.
>
> It's now 4th day and it's still not finished. Also when I run zpool
> status yesterday it was 56% complete, today it's only 13%.
>
> This is our production machine and we really can't afford this
> service to be slow any longer. Please could someone shed some
> light on why resilvering takes so long (and restarts) ?
>
> Is there a patch we can apply to fix it ?
>
> many thanks for any info,
>
> Maciej

Do you have snapshots taking place (like in a cron job) during the
resilver process?  If so, you may be hitting a bug that the resilver
will restart from the beginning whenever a new snapshot occurs.  If
you disable the snapshots during the resilver then it should complete
to 100%.

-Eric
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