Comment 1 for bug 1438603

After some analysis:
The issues is keyed to the fact that change https://review.openstack.org/#/c/131741/ introduced the capability to access the nova api with a privileged and _different_ user. The Quobyte driver currently has a hardcoded setting to use nas_secure_file_permissions=true resulting in chmod 660 on stored elements. Since the snapshot abilities are partially using the nova api and therefore privileged (different) user these operations fail with permission denied messages.
Am now thinking about how to best fix this...