+++ This bug was initially created as a clone of Bug #1120321 +++

Description of problem:
When Glance is configured to use rbd as a backend, Ceph requires show_image_direct_url to be set to True to allow copy-on-write clone of an image.
See: http://ceph.com/docs/next/rbd/rbd-openstack/

This bug is to modify astapor (controller_common.pp and glance.pp) so that if the glance backend is "rbd" , then it will pass True for show_image_direct.

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--- Additional comment from Chris Dearborn on 2014-07-16 14:05:42 EDT ---

Taken from http://ceph.com/docs/next/rbd/rbd-openstack/:
Note that this exposes the back end location via Glance’s API, so the endpoint with this option enabled should not be publicly accessible