ZFS Boot Environment

%zfs list -t all | head -6
NAME                                          USED  AVAIL  REFER  MOUNTPOINT
rpool                                         871G  28.0G   579M  /rpool
rpool/ROOT                                   28.1G  28.0G   144K  none
rpool/ROOT/11.1-RELEASE                      4.00G  28.0G  3.03G  none
rpool/ROOT/11.1-RELEASE@2017-12-01-12:33:34   991M      -  3.26G  -
rpool/ROOT/default                           24.1G  28.0G  25.9G  /

% bectl list -a
BE/Dataset/Snapshot                             Active Mountpoint Space Created
default
  rpool/ROOT/default                            NR     /          24.1G 2017-11-27 02:39
    rpool/ROOT/11.1-RELEASE@2017-12-01-12:33:34 -      -          991M  2017-12-01 12:33
11.1-RELEASE
  rpool/ROOT/11.1-RELEASE                       -      -          4.00G 2017-12-01 12:33