$ zfs get all
NAME                                     PROPERTY              VALUE                     SOURCE
sac                                      type                  filesystem                -
sac                                      creation              Sun Oct 30  7:43 2011     -
sac                                      used                  73.6G                     -
sac                                      available             816G                      -
sac                                      referenced            1.31G                     -
sac                                      compressratio         1.00x                     -

^C^C^C^C^C^Z^Z^Z^Z^Z^Z
load: 0.00  cmd: zfs 58389 [newnfs] 4548.19r 0.01u 0.05s 0% 1844k
load: 0.00  cmd: zfs 58389 [newnfs] 4548.34r 0.01u 0.05s 0% 1844k
load: 0.00  cmd: zfs 58389 [newnfs] 4548.51r 0.01u 0.05s 0% 1844k