Goals

As part of "stack.sh":

To install Glusterfs (client and server) packages
By default all Gluster-[Glance|Nova|Cinder|Manila] integrations disabled. Look at "How to use" section, to know how to enable.
Configures Glusterfs as a backend for Glance, Nova, Cinder and Manila as per localrc configuration
Creates Gluster volumes to provide them as storage to Glance, Nova, Cinder or Manila

As part of "unstack.sh":

How to use (localrc configuration)

Enable devstack-plugin-glusterfs plugin: local enable_plugin devstack-plugin-glusterfs https://github.com/stackforge/devstack-plugin-glusterfs
To enable Gluster as a backend for Glance: CONFIGURE_GLUSTERFS_GLANCE=True
To enable Gluster as a backend for Nova: CONFIGURE_GLUSTERFS_NOVA=True
To enable Gluster as a backend for Cinder: CONFIGURE_GLUSTERFS_CINDER=True Also we can enable/disable glusterfs as a backend for Cinder Backup (c-bak) driver:

By default set to True when CONFIGURE_GLUSTERFS_CINDER=True

enable_service c-bak CONFIGURE_GLUSTERFS_CINDER_BACKUP=[True OR False]
To enable Gluster as a backend for Manila: CONFIGURE_GLUSTERFS_MANILA=True Also select specific gluster backend type for manila, default is "glusterfs": GLUSTERFS_MANILA_DRIVER_TYPE=[glusterfs-nfs OR glusterfs-native]
Then run "stack.sh"