ZFS on swap
Want to encrypt your swap and still use ZFS? Nothing more trivial:
WARNING: Due the way ZFS is currently implemented (also in Solaris), this might not work in low memory conditions (i.e. at those times you really need the swap space). See http://lists.freebsd.org/pipermail/freebsd-current/2007-September/076831.html for more information.
# zfs create -V 4g tank/swap # geli onetime -s 4096 /dev/zvol/tank/swap # swapon /dev/zvol/tank/swap.eli
