filesystem labels?

Hey all,

I find that the handbook mentions glabel labels, but several other places say don’t use them.

I managed to apply a gpt label to my new partition that I created using only “gpart” 

The handbook mentions glabel labels, and tunefs labels, but says nothing about GPT labels.

I’ve seen some more complete posts on the forums (i.e. https://forums.freebsd.org/threads/how-to-label-partitions.64380/) but they still don’t show the full picture of what labels are usable where, by what and which.

Is there a good primer people know of of what the various types are, fully, which are supported in fstab, which work with ZFS only, and the like?

Or should I just keep on using /dev/daX in fstab?  (This only came up, as I’m moving virtual disk images around, and renumbering happens automatically when I delete one from a running vm), so labels are useful in this case.