Comment 4 for bug 1931004

Hi Sofi, Matthew, that's right, qcow2 images will not trigger the bug, as the image must be converted to raw prior to import - which prevents a COW clone from occurring. To reproduce this you need glance and cinder both using the same ceph cluster, an image in glance that has 'disk-format' equal to 'raw', and then simply create a volume from that image. The raw format glance image will allow cinder to call clone(), and this is where the issue arises.