ceph/qa/cephfs/clusters/1-mds-1-client.yaml

   1 roles:
   2 - [mon.a, mgr.y, mds.a, osd.0, osd.1, osd.2, osd.3]
   3 - [mon.b, mon.c, mgr.x, mds.a-s, osd.4, osd.5, osd.6, osd.7]
   4 - [client.0]
   5 openstack:
   6 - volumes: # attached to each instance
   7     count: 4
   8     size: 10 # GB