[root@blackbird /usr/home/diego]# zfs snapshot dados/Backup@teste
[root@blackbird /usr/home/diego]# zfs list -t snapshot
NAME                 USED  AVAIL  REFER  MOUNTPOINT
dados/Backup@teste      0      -  1.23M  -
[root@blackbird /usr/home/diego]# zfs get all dados/Backup@teste
NAME                PROPERTY       VALUE                  SOURCE
dados/Backup@teste  type           snapshot               -
dados/Backup@teste  creation       Wed Mar 12 16:43 2008  -
dados/Backup@teste  used           16K                    -
dados/Backup@teste  referenced     1.23M                  -
dados/Backup@teste  compressratio  1.00x                  -
dados/Backup@teste  devices        on                     default
dados/Backup@teste  exec           on                     default
dados/Backup@teste  setuid         on                     default
dados/Backup@teste  shareiscsi     off                    default
dados/Backup@teste  xattr          on                     default
[root@blackbird /usr/home/diego]# zfs rename dados/Backup@teste dados/Backup@1203
[root@blackbird /usr/home/diego]# zfs get all dados/Backup@teste
cannot open 'dados/Backup@teste': dataset does not exist
[root@blackbird /usr/home/diego]# zfs get all dados/Backup@1203 
NAME               PROPERTY       VALUE                  SOURCE
dados/Backup@1203  type           snapshot               -
dados/Backup@1203  creation       Wed Mar 12 16:43 2008  -
dados/Backup@1203  used           16K                    -
dados/Backup@1203  referenced     1.23M                  -
dados/Backup@1203  compressratio  1.00x                  -
dados/Backup@1203  devices        on                     default
dados/Backup@1203  exec           on                     default
dados/Backup@1203  setuid         on                     default
dados/Backup@1203  shareiscsi     off                    default
dados/Backup@1203  xattr          on                     default
[root@blackbird /usr/home/diego]# zfs list
NAME                USED  AVAIL  REFER  MOUNTPOINT
dados              2.39G  34.3G    26K  /mnt/dados
dados/Backup       1.25M  34.3G  1.23M  /mnt/dados/Backup
dados/Backup@1203    16K      -  1.23M  -
dados/Ebooks        144M  34.3G   144M  /mnt/dados/Ebooks
dados/Imagens      10.2M  34.3G  10.2M  /mnt/dados/Imagens
dados/Isos          510M  34.3G   510M  /mnt/dados/Isos
dados/Movies        438M  34.3G   438M  /mnt/dados/Movies
dados/Musics       1.31G  18.7G  1.31G  /mnt/dados/Musics
dados/Utils         116K  34.3G   116K  /mnt/dados/Utils
tank               1.02M  34.5G   862K  /mnt/teste
tank/Estudo          18K  10.0G    18K  /mnt/teste/Estudo
[root@blackbird /usr/home/diego]# zfs rollback dados/Backup@1203
[root@blackbird /usr/home/diego]# zfs list
NAME                USED  AVAIL  REFER  MOUNTPOINT
dados              2.39G  34.3G    26K  /mnt/dados
dados/Backup       1.23M  34.3G  1.23M  /mnt/dados/Backup
dados/Backup@1203      0      -  1.23M  -
dados/Ebooks        144M  34.3G   144M  /mnt/dados/Ebooks
dados/Imagens      10.2M  34.3G  10.2M  /mnt/dados/Imagens
dados/Isos          510M  34.3G   510M  /mnt/dados/Isos
dados/Movies        438M  34.3G   438M  /mnt/dados/Movies
dados/Musics       1.31G  18.7G  1.31G  /mnt/dados/Musics
dados/Utils         116K  34.3G   116K  /mnt/dados/Utils
tank               1.02M  34.5G   862K  /mnt/teste
tank/Estudo          18K  10.0G    18K  /mnt/teste/Estudo