Originally I wanted to be able to snapshot subdirectory trees but I could never make it work. Snapshots are always of the mount-point now. The hammer2 manual page is a bit behind in that respect. Otherwise though the snapshot command works as advertised. the 'pfs-list' command lists available snapshots.
You can mount a snapshot with <device>@LABEL, but if anything on that device has already been mounted you can use a simple shortcut 'mount @LABEL ...' to mount the snapshot. Snapshots are writable. Unlike Hammer-1, in Hammer-2 the snapshot must be mounted to access it. -Matt
