Hello, After an electrical maintenance I restarted our ceph cluster but it remains in an unhealthy state: HEALTH_ERR 1 MDSs report damaged metadata. How to repair this damaged metadata ? To bring down the cephfs cluster I unmounted the fs from the client  first and then did: ceph fs set cfs_irods_test down true To bring up the cephfs cluster I did: ceph fs set cfs_irods_test down false Fortunately the cfs_irods_test fs is almost empty and is a fs for tests.The ceph cluster is not in production yet. Following is the current status: [root@mon-01 ~]# ceph health detail HEALTH_ERR 1 MDSs report damaged metadata *[ERR] MDS_DAMAGE: 1 MDSs report damaged metadata     mds.cfs_irods_test.mon-03.vlmeuz(mds.0): Metadata damage detected* [root@mon-01 ~]# ceph -s   cluster:     id:     b87276e0-1d92-11ef-a9d6-507c6f66ae2e     health: HEALTH_ERR             1 MDSs report damaged metadata   services:     mon: 3 daemons, quorum mon-01,mon-03,mon-02 (age 17h)     mgr: mon-02.mqaubn(active, since 17h), standbys: mon-03.gvywio, mon-01.xhxqdi     mds: 1/1 daemons up, 2 standby     osd: 368 osds: 368 up (since 17h), 368 in (since 3w)   data:     volumes: 1/1 healthy     pools:   10 pools, 4353 pgs     objects: 1.25M objects, 3.9 TiB     usage:   417 TiB used, 6.4 PiB / 6.8 PiB avail     pgs:     4353 active+clean [root@mon-01 ~]# ceph fs ls name: cfs_irods_test, metadata pool: cfs_irods_md_test, data pools: [cfs_irods_def_test cfs_irods_data_test ] [root@mon-01 ~]# ceph mds stat cfs_irods_test:1 {0=cfs_irods_test.mon-03.vlmeuz=up:active} 2 up:standby [root@mon-01 ~]# ceph fs status cfs_irods_test - 0 clients ============== RANK  STATE                  MDS                    ACTIVITY DNS    INOS   DIRS   CAPS  0    active  cfs_irods_test.mon-03.vlmeuz  Reqs:    0 /s 12     15     14      0         POOL           TYPE     USED  AVAIL  cfs_irods_md_test   metadata  11.4M  34.4T  cfs_irods_def_test    data       0   34.4T cfs_irods_data_test    data       0   4542T            STANDBY MDS cfs_irods_test.mon-01.hitdem cfs_irods_test.mon-02.awuygq MDS version: ceph version 18.2.2 (531c0d11a1c5d39fbfe6aa8a521f023abf3bf3e2) reef (stable) [root@mon-01 ~]# [root@mon-01 ~]# ceph tell mds.cfs_irods_test:0 damage ls 2025-04-17T10:23:31.849+0200 7f4b87fff640  0 client.86181 ms_handle_reset on v2:130.84.80.10:6800/3218663047 2025-04-17T10:23:31.866+0200 7f4b87fff640  0 client.86187 ms_handle_reset on v2:130.84.80.10:6800/3218663047 [     { *"damage_type": "dentry",*         "id": 241447932,         "ino": 1,         "frag": "*",         "dname": "testdir2",         "snap_id": "head",         "path": "/testdir2"     },     { *"damage_type": "dentry"*,         "id": 2273238993,         "ino": 1,         "frag": "*",         "dname": "testdir1",         "snap_id": "head",         "path": "/testdir1"     } ] [root@mon-01 ~]# Any help will be appreciated, Thanks, Christophe