Compute is able to use libgfapi to connect to Block Storage GlusterFS volumes. However, a known issue exists where libvirt/Compute does not support Block Storage snapshots with this feature. This means that:
* You can:
--Use the Block Storage GlusterFS plugin to set Red Hat Storage as the storage provider for OpenStack Block Storage.
--Create Block Storage volumes in the above setup and attach those volumes to a Compute instance using FUSE.
--Create Block Storage snapshots and clones of these Block Storage volumes.
* You CANNOT:
--Attach those Block Storage volumes to a Compute instance via QEMU Gluster Blockdriver libgfapi.
--Create snapshots of a Block Storage volume that is attached to a Compute instance via libgfapi when using the GlusterFS plugin.