FreeBSD zfs create gpt

Question

How can i create gpt marks on working system.

    NAME        STATE     READ WRITE CKSUM
    zroot       ONLINE       0     0     0
      mirror-0  ONLINE       0     0     0
        ad4p3   ONLINE       0     0     0
        ad6p3   ONLINE       0     0     0

I want ad4p3 to disk0 and ad6p3 to disk1

    NAME        STATE     READ WRITE CKSUM
    zroot       ONLINE       0     0     0
      mirror-0  ONLINE       0     0     0
        disk0   ONLINE       0     0     0
        disk1   ONLINE       0     0     0

Answer 1

You can either use gpart or glabel.

As you've already created the partitions, gpart modify -i <index> -l diskX is probably the best way to do it.

Be aware that with ZFS on FreeBSD you'll have to refer to these as gpt/disk0 and gpt/disk1, not just disk0 and disk1.

I'd suggest:

• removing one half of the mirror from the zpool
• applying the label
• re-add to the mirror and wait for the mirror to resilver

Then repeat for the other half.