glance with rbd store fails to delete an image

[Yogev Rabl]

Description of problem:
The deletion of an image fails when Glance is configured to work with RBD store, with the configuration settings that are described in this manual:
http://docs.ceph.com/docs/master/rbd/rbd-openstack/#juno

It seems like the glance client is stuck.

The CLI debug show:

# glance --debug image-delete 1fc6297a-6c35-4c96-bcb1-9e9d8adee5e8
curl -i -X HEAD -H 'User-Agent: python-glanceclient' -H 'Content-Type: application/octet-stream' -H 'Accept-Encoding: gzip, deflate' -H 'Accept: */*' -H 'X-Auth-Token: {SHA1}63a8f4dccb8c42cc741bb638c08fc19dd9ccd360' http://10.35.160.133:9292/v1/images/1fc6297a-6c35-4c96-bcb1-9e9d8adee5e8

HTTP/1.1 200 OK
content-length: 0
x-image-meta-id: 1fc6297a-6c35-4c96-bcb1-9e9d8adee5e8
x-image-meta-deleted: False
x-image-meta-container_format: bare
x-image-meta-checksum: 78e6077fcda0c474d42e2811c51e791f
x-image-meta-protected: False
x-image-meta-min_disk: 0
x-image-meta-min_ram: 0
x-image-meta-created_at: 2014-12-21T07:48:22
x-image-meta-size: 41126400
x-image-meta-status: active
etag: 78e6077fcda0c474d42e2811c51e791f
x-image-meta-is_public: True
date: Sun, 21 Dec 2014 07:48:50 GMT
x-image-meta-owner: fb7cd4084c6d4262a94d406f8418d155
x-image-meta-updated_at: 2014-12-21T07:48:29
content-type: text/html; charset=UTF-8
x-openstack-request-id: req-c6975244-6e0d-4b69-8a95-d3703c226a37
x-image-meta-disk_format: raw
x-image-meta-name: cirros-to-delete

curl -i -X HEAD -H 'User-Agent: python-glanceclient' -H 'Content-Type: application/octet-stream' -H 'Accept-Encoding: gzip, deflate' -H 'Accept: */*' -H 'X-Auth-Token: {SHA1}63a8f4dccb8c42cc741bb638c08fc19dd9ccd360' http://10.35.160.133:9292/v1/images/1fc6297a-6c35-4c96-bcb1-9e9d8adee5e8

HTTP/1.1 200 OK
content-length: 0
x-image-meta-id: 1fc6297a-6c35-4c96-bcb1-9e9d8adee5e8
x-image-meta-deleted: False
x-image-meta-container_format: bare
x-image-meta-checksum: 78e6077fcda0c474d42e2811c51e791f
x-image-meta-protected: False
x-image-meta-min_disk: 0
x-image-meta-min_ram: 0
x-image-meta-created_at: 2014-12-21T07:48:22
x-image-meta-size: 41126400
x-image-meta-status: active
etag: 78e6077fcda0c474d42e2811c51e791f
x-image-meta-is_public: True
date: Sun, 21 Dec 2014 07:48:50 GMT
x-image-meta-owner: fb7cd4084c6d4262a94d406f8418d155
x-image-meta-updated_at: 2014-12-21T07:48:29
content-type: text/html; charset=UTF-8
x-openstack-request-id: req-b4808dc5-1aa1-4df0-b70f-4604355b5fba
x-image-meta-disk_format: raw
x-image-meta-name: cirros-to-delete

curl -i -X DELETE -H 'User-Agent: python-glanceclient' -H 'Content-Type: application/octet-stream' -H 'Accept-Encoding: gzip, deflate' -H 'Accept: */*' -H 'X-Auth-Token: {SHA1}63a8f4dccb8c42cc741bb638c08fc19dd9ccd360' http://10.35.160.133:9292/v1/images/1fc6297a-6c35-4c96-bcb1-9e9d8adee5e8
Version-Release number of selected component (if applicable):

How reproducible:
100%

Steps to Reproduce:
1. Create a new image
2. Delete the image

Actual results:
The image deletion fails. The data is not been deleted from the Ceph storage

Expected results:
The image should be deleted