roles: - [mon.a, mon.c, mgr.x, osd.0, osd.1, osd.2] - [mon.b, mgr.y, osd.3, osd.4, osd.5] - [client.0] openstack: - volumes: # attached to each instance count: 3 size: 10 # GB overrides: ceph: conf: osd: osd shutdown pgref assert: true