pool: tank
 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 in progress since Thu Feb 24 04:06:24 2011
    2.76T scanned out of 4.85T at 110M/s, 5h32m to go
    0 repaired, 56.94% done
config:

	NAME                                         STATE     READ WRITE CKSUM
	tank                                         ONLINE       0     0     0
	  raidz1-0                                   ONLINE       0     0     0
	    ata-WDC_WD20EARS-00S8B1_WD-WCAVY2304352  ONLINE       0     0     0
	    ata-WDC_WD20EARS-00S8B1_WD-WCAVY2449350  ONLINE       0     0     0
	    ata-WDC_WD20EARS-00S8B1_WD-WCAVY2454409  ONLINE       0     0     0
	    wwn-0x50014ee2aeb3644d                   ONLINE       0     0     0
	    ata-WDC_WD20EARS-00S8B1_WD-WCAVY2657307  ONLINE       0     0     0

errors: No known data errors