zpool resilver restarting

[Wes Morgan]

On Fri, 26 Dec 2008, Wes Morgan wrote:

> I just did a zpool replace on a new drive, and now it's resilvering.
> Only, when it gets about 20mb resilvered it restarts. I can see all the drive 
> activity simply halting for a period then resuming in gstat. I see some bugs 
> in the opensolaris tracker about this, but no resolutions. It doesn't seem to 
> be related to calling "zpool status" because I can watch gstat and see it 
> restarting... Anyone seen this before, and hopefully have a workaround...?
>
> The pool lost a drive on Wednesday and was running with a device missing, 
> however due to the device numbering changing on the scsi bus, I had to 
> export/import the pool to get it to come up, the same for after replacing it.

Replying to myself with some more information. zpool history -l -i shows 
the scrub loop happening:

2008-12-26.21:39:46 [internal pool scrub done txg:6463875] complete=0 [user root on volatile]
2008-12-26.21:39:46 [internal pool scrub txg:6463875] func=1 mintxg=3 maxtxg=6463720 [user root on volatile]
2008-12-26.21:41:23 [internal pool scrub done txg:6463879] complete=0 [user root on volatile]
2008-12-26.21:41:23 [internal pool scrub txg:6463879] func=1 mintxg=3 maxtxg=6463720 [user root on volatile]
2008-12-26.21:43:00 [internal pool scrub done txg:6463883] complete=0 [user root on volatile]
2008-12-26.21:43:00 [internal pool scrub txg:6463883] func=1 mintxg=3 maxtxg=6463720 [user root on volatile]
2008-12-26.21:44:38 [internal pool scrub done txg:6463887] complete=0 [user root on volatile]
2008-12-26.21:44:38 [internal pool scrub txg:6463887] func=1 mintxg=3 maxtxg=6463720 [user root on volatile]