It appears that the RBD driver in Cinder only checks that the image is accessible, and if it is, assumes it is cloneable, regardless of its format. I think it would be more useful if the driver also confirmed the image format, and reverted to straight copy instead of copy-on-write if the format is anything else but raw. Background: https://bugs.launchpad.net/fuel/+bug/1246219 Thoughts? -- Dmitry Borodaenko _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com