A "backtrace" is an xattr on the RADOS object storing data for a given file, and it contains the file's (versioned) path from the root. So a bad backtrace means there's something wrong with that — possibly just that there's a bug in the version of the code that's checking it, because they're generally out of date and that's okay; it's definitely not critical because they're only used for disaster recovery or in some rare ino-based lookup cases if there's a hard link to the file or some rare nfs situations. The "bad remote dentry" message means that you had a link and...I don't actually remember the details of this one. But my guess is that the relevant files were just auto-deleted and not critical to the software anyway, so that's why the error went away. Incorrect handling of them being checked while being deleted them might also be why a warning was spawned to begin with. -Greg On Mon, Feb 13, 2023 at 5:43 AM Andrej Filipcic <andrej.filipcic@ijs.si> wrote:
On 2/10/23 08:50, Andrej Filipcic wrote:
FYI, the damage went away after a couple of days, not quite sure how.
Best, Andrej
Hi,
there is mds damage on our cluster, version 17.2.5,
[ { "damage_type": "backtrace", "id": 2287166658, "ino": 3298564401782, "path": "/hpc/home/euliz/.Xauthority" } ]
The recursive repair does not fix it, ...ceph tell mds.0 scrub start /hpc/home/euliz force,repair,recursive
mds log:
2023-02-10T07:01:34.012+0100 7f46df3ea700 0 mds.0.cache failed to open ino 0x30001c26a76 err -116/0 2023-02-10T07:01:34.012+0100 7f46df3ea700 0 mds.0.cache open_remote_dentry_finish bad remote dentry [dentry #0x1/hpc/home/euliz/.Xauthority [568,head] auth REMOTE(reg) (dversion lock) pv=0 v=4425667830 ino=(nil) state=1073741824 | ptrwaiter=1 0x5560eb33a780]
Any clue how to fix this? or remove the file from namespace? it is not important...
Thanks, Andrej
-- _____________________________________________________________ prof. dr. Andrej Filipcic, E-mail:Andrej.Filipcic@ijs.si Department of Experimental High Energy Physics - F9 Jozef Stefan Institute, Jamova 39, P.o.Box 3000 SI-1001 Ljubljana, Slovenia Tel.: +386-1-477-3674 Fax: +386-1-477-3166 -------------------------------------------------------------
-- _____________________________________________________________ prof. dr. Andrej Filipcic, E-mail:Andrej.Filipcic@ijs.si Department of Experimental High Energy Physics - F9 Jozef Stefan Institute, Jamova 39, P.o.Box 3000 SI-1001 Ljubljana, Slovenia Tel.: +386-1-477-3674 Fax: +386-1-477-3166 ------------------------------------------------------------- _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-leave@ceph.io