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