Re: [libvirt] QEMU migration with non-shared storage

Hi Michael! On 11 September 2014 14:13, Michael Chapman <mike(a)very.puzzling.org&gt; wrote: > Why is RBD is handled specially in this function? The current logic is that > an RBD-backed disk is safe to be migrated even if it's got caching enabled, > but I'm not sure how RBD is different from other backends in this regard. I recall this has was discussed before but am having trouble finding the thread. I think the gist of it was that the rbd integration was just lucky, but it wasn't using the appropriate interfaces defined by libvirt for flushing. And I think Debian patches away the qemuMigrationIsSafe pass for RBD, so it'll only pass for cache=none.