pool drive allocation

zpool status
  pool: core
 state: ONLINE
 scan: scrub repaired 0 in 0h6m with 0 errors on Sun Jul 29 12:20:10 2012
config:

	NAME        STATE     READ WRITE CKSUM
	core        ONLINE       0     0     0
	  ada0s2    ONLINE       0     0     0

errors: No known data errors

  pool: gemini
 state: ONLINE
 scan: scrub repaired 0 in 0h0m with 0 errors on Sun Jul 29 12:14:11 2012
config:

	NAME        STATE     READ WRITE CKSUM
	gemini      ONLINE       0     0     0
	  ada2      ONLINE       0     0     0
	cache
	  da5       ONLINE       0     0     0

errors: No known data errors

  pool: grindstone
 state: ONLINE
 scan: none requested
config:

	NAME        STATE     READ WRITE CKSUM
	grindstone  ONLINE       0     0     0
	  ada1      ONLINE       0     0     0
	cache
	  da6       ONLINE       0     0     0
	  da7       ONLINE       0     0     0
	  da0       ONLINE       0     0     0

errors: No known data errors