Hi guys, This issue be found in my environment and traced by: https://bugs.launchpad.net/glance/+bug/1180377 I have proposed a fix on follow page, I have talked this change with Mark in IRC, current I need you to review this change to make sure it is good enough and will not make regress and keep the backwards compatibility. After that I'd like put the unit test there. https://review.openstack.org/#/c/29245/ Thanks, Zhi Yan