Hello Ricardo, On Thu, Feb 25, 2021 at 11:51 AM <ricardo.re.azevedo@gmail.com> wrote:
Hi all,
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" which is very concerning.
It is not concerning, actually. This just indicates that the reverse link of the file's object data to its path in the file system is incorrect.
` ceph tell mds.database-0 scrub start / recursive repair` seems to have no effect on the damage. What does this sort of damage mean? Is there anything I can do to recover these files?
Scrubbing should correct it. Try "recursive repair force" to see if that helps. "force" will cause the MDS to revisit metadata that has been scrubbed previously but unchanged since then. -- Patrick Donnelly, Ph.D. He / Him / His Principal Software Engineer Red Hat Sunnyvale, CA GPG: 19F28A586F808C2402351B93C3301A3E258DD79D