25 Feb
2021
25 Feb
'21
11:36 p.m.
Hello Ricardo,
On Thu, Feb 25, 2021 at 11:51 AM <ricardo.re.azevedo(a)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