jbo@bromine:~ % gpart show -l
=>       40  500118112  ada0  GPT  (238G)
         40     409600     1  efiboot0  (200M)
     409640       1024     2  gptboot0  (512K)
     410664        984        - free -  (492K)
     411648   16777216     3  swap0  (8.0G)
   17188864  482928640     4  zfs0  (230G)
  500117504        648        - free -  (324K)

=>        34  1000215149  ada1  GPT  (477G)
          34           6        - free -  (3.0K)
          40      409600     1  (null)  (200M)
      409640        1024     2  (null)  (512K)
      410664         984        - free -  (492K)
      411648    16777216     3  (null)  (8.0G)
    17188864   482928640     4  disk1_zfs  (230G)
   500117504   500097679        - free -  (238G)

jbo@bromine:~ % gpart show 
=>       40  500118112  ada0  GPT  (238G)
         40     409600     1  efi  (200M)
     409640       1024     2  freebsd-boot  (512K)
     410664        984        - free -  (492K)
     411648   16777216     3  freebsd-swap  (8.0G)
   17188864  482928640     4  freebsd-zfs  (230G)
  500117504        648        - free -  (324K)

=>        34  1000215149  ada1  GPT  (477G)
          34           6        - free -  (3.0K)
          40      409600     1  efi  (200M)
      409640        1024     2  freebsd-boot  (512K)
      410664         984        - free -  (492K)
      411648    16777216     3  freebsd-swap  (8.0G)
    17188864   482928640     4  freebsd-zfs  (230G)
   500117504   500097679        - free -  (238G)