Upgrading from 8.3 to 9.1 zfs pool can't attach

[Leslie Jensen]

I've upgraded a machine with freebsd-update from 8.3 to 9.1.

After the first restart I edited /etc/fstab in single user mode because 
the names on the disks had changed. But the zfs pool I have seem to have 
a problem and I'm sure on how to recover it.


May 22 12:00:39  kernel: ZFS WARNING: Unable to attach to ada0.
May 22 12:00:39  kernel: ZFS WARNING: Unable to attach to ada1.
May 22 12:00:39  kernel: ZFS WARNING: Unable to attach to ada4.
May 22 12:00:40  kernel: ZFS WARNING: Unable to attach to ada5.


camcontrol devlist
<ST3320620AS 3.AAE>                at scbus0 target 0 lun 0 (ada0,pass0)
<ST3320620AS 3.AAE>                at scbus1 target 0 lun 0 (ada1,pass1)
<WDC WD360GD-00FNA0 35.06K35>      at scbus2 target 0 lun 0 (ada2,pass2)
<WDC WD360GD-00FNA0 35.06K35>      at scbus2 target 1 lun 0 (ada3,pass3)
<ST3320620AS 3.AAE>                at scbus3 target 0 lun 0 (ada4,pass4)
<ST3320620AS 3.AAE>                at scbus3 target 1 lun 0 (ada5,pass5)

ada2 and ada3 are configured as raid/r0 holding the system.

ada0, ada1, ada4 and ada5 should be a zfs pool with  /home


cat /etc/fstab

# Device                Mountpoint      FStype  Options       Dump Pass#
/dev/raid/r0s1b         none            swap    sw             0       0
/dev/raid/r0s1a         /               ufs     rw             1       1
/dev/raid/r0s1e         /tmp            ufs     rw             2       2
/dev/raid/r0s1f         /usr            ufs     rw             2       2
/dev/raid/r0s1d         /var            ufs     rw             2       2


I'm not sure but shouldn't the mount point for /home also appear in fstab?

Maybe I messed up during the manual editing of files during the update 
process?


Can I recover or shall I destroy the pool and rebuild it?

Thanks

/Leslie