Comment 18 for bug 1464656

lma-toolchain 0.9 is impacted since it reports Ceph cluster in WARNING state (MOS 8.0: deployment with 3 controllers, 3 OSDs, replica factor=3):
ceph -s
    cluster ec475b45-5e0f-48a8-9f3a-3b3c5eda47ea
     health HEALTH_WARN
            too many PGs per OSD (480 > max 300)
     monmap e3: 3 mons at {node-4=192.168.0.7:6789/0,node-7=192.168.0.11:6789/0,node-9=192.168.0.9:6789/0}
            election epoch 8, quorum 0,1,2 node-4,node-9,node-7
     osdmap e49: 4 osds: 4 up, 4 in
      pgmap v676: 640 pgs, 10 pools, 45745 kB data, 61 objects
            6450 MB used, 1369 GB / 1375 GB avail
                 640 active+clean
  client io 9540 B/s rd, 8085 B/s wr, 9 op/s

A workaround would be to suppress this warning by disabling it in ceph.conf (or increase this value): mon_pg_warn_max_per_osd = 0

But apparently, it is up to ceph admins to (re)organize cluster after deployment for better performance on MOS 8.0