I confirm the scenario described in comment #7 reproduces with a stable/liberty devstack and I verified the patch successfully fix the issue: after the resize, /dev/vdb is still a raw device with the qcow header visible.
I confirm the scenario described in comment #7 reproduces with a stable/liberty devstack and I verified the patch successfully fix the issue: after the resize, /dev/vdb is still a raw device with the qcow header visible.