MDS is reporting damaged metadata damage- followup - ceph-users

3 Mar 2021

Hi all,

Following up on a previous issue. 

My cephfs MDS is reporting damaged metadata following the addition (and
remapping) of 12 new OSDs.              
`ceph tell mds.database-0 damage ls` reports ~85 files damaged. All of type
"backtrace". 
` ceph tell mds.database-0 scrub start / recursive repair` seems to have no
effect on the damage. 
` ceph tell mds.database-0 scrub start / recursive repair force` also has no
effect.

I understand this seems to be an issue with mapping the file to a filesystem
path. Is there anything I can do to recover these files? Any manual methods?

...
  ceph status reports:   cluster:

    id:     692905c0-f271-4cd8-9e43-1c32ef8abd13

    health: HEALTH_ERR

            1 MDSs report damaged metadata

            300 pgs not deep-scrubbed in time

            300 pgs not scrubbed in time

  services:

    mon: 3 daemons, quorum database-0,file-server,webhost (age 37m)

    mgr: webhost(active, since 3d), standbys: file-server, database-0

    mds: cephfs:1 {0=database-0=up:active} 2 up:standby

    osd: 48 osds: 48 up (since 56m), 48 in (since 13d); 10 remapped pgs

  task status:

    scrub status:

        mds.database-0: idle

  data:

    pools:   7 pools, 633 pgs

    objects: 60.82M objects, 231 TiB

    usage:   336 TiB used, 246 TiB / 582 TiB avail

    pgs:     623 active+clean

             6   active+remapped+backfilling

             4   active+remapped+backfill_wait

Thanks for the help.

Best,

Ricardo