zfs hydra example

zfs list -r core
NAME                       USED  AVAIL  REFER  MOUNTPOINT
core                      17.5G  47.5G    41K  /volumes/core
core/home                 16.8G  47.5G    54K  /home
core/home/grace           46.5K  47.5G  46.5K  /home/grace
core/home/http             101M  47.5G   101M  /home/http
core/home/killermist      16.7G  47.5G   136K  /home/killermist
core/home/killermist/iso  16.7G  47.5G  16.7G  /home/killermist/iso
core/home/transmission    25.5M  47.5G  25.5M  /home/transmission
core/jail                  687M  47.5G   687M  /jail
core/root                 1.71M  47.5G  1.71M  /root