On Jul 4, 2014, at 3:11, "Day, Phil" <philip.day at hp.com> wrote: > I have a BP (https://review.openstack.org/#/c/89650) and the first couple of bits of implementation (https://review.openstack.org/#/c/68942/ https://review.openstack.org/#/c/99916/) out for review on this very topic ;-) Great, I'll review and add my comments then. I'm interested in this because I have observed a problematic number of guest file system corruptions when migrating RHEL guests because of the hard power off.