So I'm getting this warning (although there are no noticeable problems in the cluster):
$ ceph health detail
HEALTH_WARN 1 MDSs report oversized cache
[WRN] MDS_CACHE_OVERSIZED: 1 MDSs report oversized cache
mds.storefs-b(mds.0): MDS cache is too large (7GB/4GB); 0 inodes in use by clients, 0 stray files
Ceph FS status:
$ ceph fs status
storefs - 20 clients
=======
RANK STATE MDS ACTIVITY DNS INOS DIRS CAPS
0 active storefs-a Reqs: 0 /s 1385k 1385k 113k 193k
0-s standby-replay storefs-b Evts: 0 /s 3123k 3123k 33.5k 0
POOL TYPE USED AVAIL
storefs-metadata metadata 19.4G 12.6T
storefs-pool4x data 4201M 9708G
storefs-pool2x data 2338G 18.9T
MDS version: ceph version 17.2.5 (98318ae89f1a893a6ded3a640405cdbb33e08757) quincy (stable)
What is telling me? Is it just that case of the cache size needing to be bigger? Is it a problem with the clients holding onto some kind of reference (documentation says this can be a cause, but now how to check for it).
Thanks in advance,
Pedro Lopes
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