i'm pretty sure you're just looking for the zfs rollback command.

a quick google brings up a lot of information and also man zfs

check out this page
http://docs.huihoo.com/opensolaris/solaris-zfs-administration-guide/html/ch06.html

On Sun, Jul 19, 2009 at 10:29 AM, Brian Wilson <bfwil...@doit.wisc.edu>wrote:

> It's clear from some threads on this list that it IS possible to roll back
> a zpool to a previous state, and I seem to even remember reading someone was
> working on a tool or tools in that direction.
> Is that correct, is it possible to manually roll back a zpool for crash
> recovery purposes, if you've got enough clue/knowledge/experience on your
> side in regards to the right tools?
>
> And the follow up question - how do I learn how to do that?  Is there
> documentation somewhere that instructs one on the tools used for low level
> ZFS troubleshooting and rollback, and how to come back from the land of
> crash-then-fail-to-import?  Is it the troubleshooting document?  I'm happy
> to get a RTFM - please just point me at the right manual or Sun doc too :)
>
> Thanks!
> Brian
>
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