Hi Edward, On Wed, 19 Oct 2022 at 21:27, Edward R Huyer <erh...@rit.edu> wrote: > > I recently set up scheduled snapshots on my CephFS filesystem, and ever since > the cluster has been intermittently going into HEALTH_WARN with an > MDS_CLIENT_LATE_RELEASE notification. > > Specifically: > > [WARN] MDS_CLIENT_LATE_RELEASE: 1 clients failing to respond to capability > release > > mds.[redacted](mds.0): Client [redacted] failing to respond to > capability release client_id: 806270628 > > > I catch errors like this in the logs: > client.785155718 isn't responding to mclientcaps(revoke), ino 0x10004c1abc6 > pending pAsLsXsFsc issued pAsLsXsFsc, sent 3844.269321 seconds ago > > (Ignore the fact that the client numbers don't match in this case; one was > captured before the client was rebooted, the other after. There's only one > CephFS client and the numbers normally match.) > > If left alone, the issue eventually resolves itself, then comes back at some > point in the future. > > It appears to be the same as this bug: https://tracker.ceph.com/issues/49434 > Which leads here: https://tracker.ceph.com/issues/57244 > And then this pull request: https://github.com/ceph/ceph/pull/47752 > > My reading is that this is simply a matter of the MDS not recognizing that > the caps have, in fact, been released, and that I can safely ignore the > warnings until the patch percolates down to a Pacific release. Is that > right, or am I missing something significant? >
The PR has been marked for being backported to Pacific, so the patch will eventually end up in Pacific. In running tests for CephFS, I haven't seen more complications from this bug than the issue you seem to hit. This is what I see normally - "cluster [WRN] client.xxxxx isn't responding to mclientcaps(revoke)". So ignoring it probably is safe. I'll try to contact the PR author and ask for an opinion. - Regards, Rishabh > ----- > Edward Huyer > Golisano College of Computing and Information Sciences > Rochester Institute of Technology > Golisano 70-2373 > 152 Lomb Memorial Drive > Rochester, NY 14623 > 585-475-6651 > erh...@rit.edu<mailto:erh...@rit.edu> > > Obligatory Legalese: > The information transmitted, including attachments, is intended only for the > person(s) or entity to which it is addressed and may contain confidential > and/or privileged material. Any review, retransmission, dissemination or > other use of, or taking of any action in reliance upon this information by > persons or entities other than the intended recipient is prohibited. If you > received this in error, please contact the sender and destroy any copies of > this information. > > _______________________________________________ > ceph-users mailing list -- ceph-users@ceph.io > To unsubscribe send an email to ceph-users-le...@ceph.io > _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
