When we delete a Glance image the image is deleted in Glance but not in the ceph pool, Why?

Issue

• Issues deleting glance images
• Ceph back-end Glance Image deletion problem.
• When we delete a Glance image, the image is deleted in Glance but not in the ceph pool.
• Glance image-delete fails to delete parent ceph RBD image only deletes clone of it.

2015-06-12 19:56:59.977 8694 DEBUG glance_store._drivers.rbd [-] _cleanup_image() failed delete /usr/lib/python2.7/site-packages/glance_store/_drivers/rbd.py:441
2015-06-12 19:56:59.977 8694 TRACE glance_store._drivers.rbd Traceback (most recent call last):
2015-06-12 19:56:59.977 8694 TRACE glance_store._drivers.rbd   File "/usr/lib/python2.7/site-packages/glance_store/_drivers/rbd.py", line 439, in delete
2015-06-12 19:56:59.977 8694 TRACE glance_store._drivers.rbd     self._cleanup_image(target_pool, loc.image, loc.snapshot)
2015-06-12 19:56:59.977 8694 TRACE glance_store._drivers.rbd   File "/usr/lib/python2.7/site-packages/glance_store/_drivers/rbd.py", line 341, in _cleanup_image
2015-06-12 19:56:59.977 8694 TRACE glance_store._drivers.rbd     % image_name)
2015-06-12 19:56:59.977 8694 TRACE glance_store._drivers.rbd NotFound: RBD image e796253d-dca3-457f-8112-165c38454194 does not exist  
2015-06-12 19:56:59.977 8694 TRACE glance_store._drivers.rbd 
2015-06-12 19:56:59.990 8694 WARNING glance.common.store_utils [-] Failed to delete image e796253d-dca3-457f-8112-165c38454194 in store from URI