I think the two commits below need to be reverted. This is now preventing me from creating ZFS volumes (and presumably would block creating LVM volumes too). I don't know how this passed my testing before and isn't working now, but that seems to be the case. When I run `virsh vol-create-as --pool=zfs --name=sparse1 --capacity=1G --format=raw`, target.format is 0 (VIR_STORAGE_FILE_NONE). Also note that the equivalent code in RBD came in a commit with more code. So I'm thinking I was on the wrong track with these two patches. commit bb5f2dc91f43f48ff726aa589bdac546738d2980 Author: Richard Laager <rlaager@wiktel.com> Date: Tue Mar 15 01:17:35 2016 -0500 zfs: Only raw volumes are supported commit 6682d6219d4595b51f06867e0c30e7efd745f682 Author: Richard Laager <rlaager@wiktel.com> Date: Tue Mar 15 01:17:34 2016 -0500 logical: Only raw volumes are supported -- Richard