ZFS corrupted data

[Lars Hartmann]

Hi,

i have a problem with my zfs installation here:

Environment: FreeBSD-8.1 on a raidz of 4 sata disks.

Yesterday i tried out FreeBSD's suspend/resume function, after the
resume the system started spitting out IO-Error messages so i rebooted
the machine.

Now the zfs bootloader tells me that it can't read the zpool somehow,
now today i booted a live-cd and tried to import the zpool, now zpool
import shows me:

Fixit# zpool import
  pool: tank
    id: 8874208433256738661
 state: FAULTED
status: The pool was last accessed by another system.
action: The pool cannot be imported due to damaged devices or data.
        The pool may be active on another system, but can be imported
        using the '-f' flag.
   see: http://www.sun.com/msg/ZFS-8000-EY
config:

       tank           FAULED corrupted data
         raidz1       ONLINE
           gpt/zfs0   ONLINE
           gpt/zfs1   ONLINE
           gpt/zfs2   ONLINE
           gpt/zfs3   ONLINE

any thoughts/suggestions on how to repair/restore the pool and how this
could've happened?
-- 
Lars Hartmann <lars at chaotika.org>