zfs ram disk as zil, a really bad idea
ramdiskadm -a fast 256m
zpool add zfs-hybrid2 log /dev/ramdisk/fast
zpool remove zfs-hybrid2 /dev/ramdisk/fast
ramdiskadm -a fast 256m
zpool add zfs-hybrid2 log /dev/ramdisk/fast
zpool remove zfs-hybrid2 /dev/ramdisk/fast