Ceph status shows HEALTH_ERR with MDSs report damaged metadata

Solution Verified - Updated -


When checking Ceph Status ( ceph -s ), cluster health is listed as HEALTH_ERR, with the following line listed:

1 MDSs report damaged metadata

Check of the output of the damage ls command shows similar to the following:

# ceph tell mds.$filesystem:0 damage ls
        "damage_type": "backtrace",
        "id": 2091078454,
        "ino": 1,
        "path": ""

Where: $filesystem is the name of the CephFS filesystem which has the damaged metadata. This is not the hostname of the MDS.


Before applying this fix...

Please confirm that:

  • the "damage_type" is listed as "backtrace".
  • the "ino" value is 1, which indicates that the damaged metadata corresponds to the root of the filesystem.



Red Hat Ceph Storage 3.x and 4.x with CephFS

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