ZFS: drive replacement performance

[Emil Mikulic]

On Tue, Jul 07, 2009 at 03:53:58PM -0500, Brooks Davis wrote:
> I'm seeing essentially the same think on an 8.0-BETA1 box with an 8-disk
> raidz1 pool.  Every once in a while the system makes it to 0.05% done
> and gives a vaguely reasonable rebuild time, but it quickly drops back
> to reports 0.00% and it's basically not making any forward progress.

You're not creating or deleting snapshots, are you?
AFAICT doing that will make scrub (and resilver) start from scratch.

--Emil