Something dangerous seems to happen...
# mdmfs -s 1m -o acls md1 /mnt
# mount
<snip>
/dev/md1 on /mnt (ufs, local, soft-updates, acls)
# mksnap_ffs /mnt /mnt/.snap/snap
# mount
<snip>
/dev/md1 on /mnt (ufs, local, soft-updates)
!!!!
Ooh, where is the acls option??
-- fuyuki