Cloned for documentation impact, refer to Bug # 985139 for implementation details.
relevant: https://bugs.launchpad.net/openstack-manuals/+bug/1203201
For QE, the new section can be viewed here: http://documentation-devel.engineering.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux_OpenStack_Platform/4/html-single/Administration_User_Guide/index.html#cli_implement_block_storage_quotas thanks, Summer