does live migration always run rsync even if storage is glusterfs?
When live migrating an instance between servers using glusterfs, rsync is used to migrate the image each time even though all nodes have access to the same glusterfs storage drive. The /var/lib/nova/instances folder is a glusterfs mount and works perfectly. Is there a way to prevent the live migration rsync'ing the image each time and just checking the image exists, or is that just the way openstack works ?