ilovezfs wrote:ZEVO and FreeBSD 9 both use pool version 28. ZFS on Linux uses pool version 5000.
FWIW, you can "downgrade" a zpool's version at creation to some least-common-denominator. (For instance, I created a zpool on OmniOS as v28 even through it supports v5000, specifically to retain compatibility with other platforms). I would guess ZoL supports this notion too.