If I run the commands now, I still don't get any information returned with ceph fs perf stats. cephfs-top still says there is no cluster ceph. The clients are all el7 & el8 kernel clients and show up in the Dashboard. When I execute "ceph tell mds.<rank0 id> client ls", I can see all clients are there. For example: [ { "id": 2916622, "entity": { "name": { "type": "client", "num": 2916622 }, "addr": { "type": "v1", "addr": "10.0.1.24:0", "nonce": 3286427868 } }, "state": "open", "num_leases": 0, "num_caps": 1, "request_load_avg": 0, "uptime": 44154.571553857997, "requests_in_flight": 0, "num_completed_requests": 0, "num_completed_flushes": 0, "reconnecting": false, "recall_caps": { "value": 0, "halflife": 60 }, "release_caps": { "value": 0, "halflife": 60 }, "recall_caps_throttle": { "value": 0, "halflife": 1.5 }, "recall_caps_throttle2o": { "value": 0, "halflife": 0.5 }, "session_cache_liveness": { "value": 0, "halflife": 300 }, "cap_acquisition": { "value": 0, "halflife": 10 }, "delegated_inos": [], "inst": "client.2916622 v1:10.0.1.24:0/3286427868", "completed_requests": [], "prealloc_inos": [], "client_metadata": { "client_features": { "feature_bits": "0x0000000000007bff" }, "metric_spec": { "metric_flags": { "feature_bits": "0x000000000000001f" } }, "entity_id": "xxx", "hostname": "xxx.xxx.xx", "kernel_version": "4.18.0-305.7.1.el8_4.x86_64", "root": "/nodes/xxx/xxx" } }, So where Eugen gets "some" information back, I don't get any. It looks as if the cluster isn't recognized, even while all other commands are working. _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx