We just upgraded a cephfs cluster from 12.2.12 to 14.2.11. Our next step is to upgrade to 14.2.16 to troubleshoot this issue, but I thought I'd reach out here first if anyone had any ideas. The clients are still running an older version of ceph-fuse 12.2.4 and it's very difficult to remount all of them. Would probably take a team of us a couple days to restart all of them. I've looked around online and release notes and all of the known memory leaks I've been able to find have been fixed prior to version 14.2.11 so this would be an unknown memory leak. All of the memory is in use in [1] buffer_anon. If left unchecked it will use up over 700GB of memory within 24 hours. On an identical cluster with an equivalent workload still running 12.2.12 [2] buffer_anon information is much healthier. Without any other options or ideas our plan is to upgrade the cluster to 14.2.16 first and then upgrade the clients. Has anyone else come across high buffer_anon usage? [1] "buffer_anon": { "items": 33756758, "bytes": 135025912897 }, [2] "buffer_anon": { "items": 636, "bytes": 273118 },