Yep this will work. Just that it's not something probably intended by zfs designers, so ask in zfs-discuss to be sure!
Of course, a better way would be to create a pool on a second disk, and use zfs send / zfs recv to replicate incrementally to it. WARNING: in BOTH case make sure to install grub on the backup disk if you're thinking about swapping the backup disk with primary in case the primary fails! -- This message posted from opensolaris.org
