Comment 5 for bug 1401170

If image have something inside, it will be accounted and billed. Zero-sized images are not.

I've ran test for 15 minutes and got many funny problems with few parts of OS: horizon almost dying, glance-client just can not show image list (after 10minutes of 100% cpu for mysql server): https://bugs.launchpad.net/python-glanceclient/+bug/1401188

If this is not a security bug, it should at least be considered a normal bug, because in multi-tennant environment one non-privileged user can cause problems to other users and/or administrators.