How do I configure the glance container to use a host-mounted NFS share? It is not covered in the kolla-ansible documentation [1]. What it does say is to set the file path using "glance_file_datadir_volume". I believe that this is relative to the container (not the host). 

Do I need to mount the local host (nfs) directory as a docker volume for glance as additional step? If so, how do I achieve this with kayobe / kolla-ansible? 

Some background: 

After a successful deployment of 3 controller nodes I have one glance service which is dependent on one of these controller nodes being available always. My intent is to provide a NFS share for glance that removes the dependency.

[1] OpenStack Docs: Glance - Image service

Kind regards,