On Wed, Oct 14, 2009 at 7:03 AM, Avi Kivity <avi@xxxxxxxxxx> wrote: > Early implementations of virtio devices did not support barrier operations, > but did commit the data to disk. In such cases, drain the queue to emulate > barrier operations. would this help on the (i think common) situation with XFS on a virtio-enabled VM, using LVM-backed storage; where LVM just loses barriers. -- Javier -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html