root@opl:/srv/sysadmin-cookbook/recepies/zfs# fdisk -l /dev/nbd0

Disk /dev/nbd0: 250.0 GB, 250000000000 bytes
255 heads, 63 sectors/track, 30394 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00000000

     Device Boot      Start         End      Blocks   Id  System
/dev/nbd0p1               1       13374   107426623+  83  Linux


root@opl:~# zpool status
  pool: zfs
 state: ONLINE
 scrub: scrub completed after 0h19m with 0 errors on Thu Apr 30 22:46:09 2009
config:

        NAME         STATE     READ WRITE CKSUM
        zfs          ONLINE       0     0     0
          raid0/zfs  ONLINE       0     0     0

errors: No known data errors


root@opl:~# zpool attach zfs /dev/raid0/zfs /dev/nbd0p1

root@opl:~# zpool status
  pool: zfs
 state: ONLINE
status: One or more devices is currently being resilvered.  The pool will
	continue to function, possibly in a degraded state.
action: Wait for the resilver to complete.
 scrub: resilver in progress for 0h2m, 3.47% done, 1h5m to go
config:

	NAME           STATE     READ WRITE CKSUM
	zfs            ONLINE       0     0     0
	  mirror       ONLINE       0     0     0
	    raid0/zfs  ONLINE       0     0     0
	    nbd0p1     ONLINE       0     0     0

errors: No known data errors