Hi All,
Just noticed on 2 Ceph Luminous 12.2.4 clusters, Ceph mgr spams the syslog with lots of "mon failed to return metadata for mds" every second.
```
2018-04-20 06:06:03.951412 7fca238ff700 1 mgr send_beacon active
2018-04-20 06:06:04.934477 7fca14809700 0 ms_deliver_dispatch: unhandled message 0x55bf897f0a00 mgrreport(mds.mds1 +24-0 packed 214) v5 from mds.0 10.100.100.114:6800/4132681434
2018-04-20 06:06:04.934937 7fca25102700 1 mgr finish mon failed to return metadata for mds.mds1: (2) No such file or directory
```
How to fix this issue? or disable it completely to reduce disk IO and increase SSD life span?
Kind regards,
Charles Alva
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