# zpool status -v
  pool: data2
 state: ONLINE
status: The pool is formatted using an older on-disk format. The pool can
	still be used, but some features are unavailable.
action: Upgrade the pool using 'zpool upgrade'. Once this is done, the
	pool will no longer be accessible on older software versions.
  scan: scrub repaired 0 in 1h47m with 0 errors on Mon Jun 10 22:02:19 2013
config:

	NAME        STATE     READ WRITE CKSUM
	data2       ONLINE       0     0     0
	  mirror-0  ONLINE       0     0     0
	    c4t4d0  ONLINE       0     0     0
	    c4t5d0  ONLINE       0     0     0

errors: No known data errors

  pool: rpool
 state: ONLINE
status: The pool is formatted using an older on-disk format. The pool can
	still be used, but some features are unavailable.
action: Upgrade the pool using 'zpool upgrade'. Once this is done, the
	pool will no longer be accessible on older software versions.
  scan: scrub repaired 0 in 0h3m with 0 errors on Mon Jun 10 20:21:27 2013
config:

	NAME        STATE     READ WRITE CKSUM
	rpool       ONLINE       0     0     0
	  c4t1d0s0  ONLINE       0     0     0

errors: No known data errors