[eadmund]

> mdadm+luks+lvm still do not quite provide the same set of features that ZFS alone does even without encryption. Namely in-line compression, and data checksumming, not to mention free snapshots.

Sure, but LUKS+ZFS provides all that too, and also encrypts everything (ZFS encryption, surprisingly, does not encrypt metadata).

As this article demonstrates, encryption really is an afterthought with ZFS. Just as ZFS rethought from first principles what storage requires and ended up making some great decisions, someone needs to rethink from first principles what secure storage requires.