Hi, I've had a complete monitor failure, which I have recovered from with the steps here: https://docs.ceph.com/docs/mimic/rados/troubleshooting/troubleshooting-mon/… The data and metadata pools are there and are completely intact, but ceph is reporting that there are no filesystems, where (before the failure) there was one. Is there any way of putting the filesystem back together again without having to resort to having to rebuild a new metadata pool with cephfs-data-scan? I'm on ceph version 15.2.4 (7447c15c6ff58d7fce91843b705a268a1917325c) octopus (stable) Thanks, Harlan _______________________________________________ ceph-users mailing list -- ceph-users(a)ceph.io To unsubscribe send an email to ceph-users-leave(a)ceph.io

My ceph -s output is this: cluster: id: bfe08dcf-aabd-4cac-ac4f-9e56af3df11b health: HEALTH_ERR 1/3 mons down, quorum omicron-m1,omicron-m2 6 scrub errors Possible data damage: 1 pg inconsistent Degraded data redundancy: 626702/20558920 objects degraded (3.048%), 32 pgs degraded, 32 pgs undersized 94 daemons have recently crashed services: mon: 3 daemons, quorum omicron-m1,omicron-m2 (age 8h), out of quorum: omicron-m0 mgr: omicron-m0(active, since 28h) osd: 33 osds: 32 up (since 28h), 32 in (since 28h) data: pools: 8 pools, 736 pgs objects: 9.97M objects, 9.9 TiB usage: 21 TiB used, 27 TiB / 47 TiB avail pgs: 626702/20558920 objects degraded (3.048%) 702 active+clean 32 active+undersized+degraded 1 active+clean+inconsistent 1 active+clean+scrubbing+deep+repair and ceph fs status prints nothing. _______________________________________________ ceph-users mailing list -- ceph-users(a)ceph.io To unsubscribe send an email to ceph-users-leave(a)ceph.io

I added an MDS, but there was no change in either output (apart from recognising the existence of an MDS) _______________________________________________ ceph-users mailing list -- ceph-users(a)ceph.io To unsubscribe send an email to ceph-users-leave(a)ceph.io

Both the MDS maps and the keyrings are lost as a side effect of the monitor recovery process I mentioned in my initial email, detailed here https://docs.ceph.com/docs/mimic/rados/troubleshooting/troubleshooting-mon/… . On Mon, 31 Aug 2020 at 21:10, Eugen Block <eblock(a)nde.ag> wrote: > I don’t understand, what happened to the previous MDS? If there are > cephfs pools there also was an old MDS, right? Can you explain that > please? > > > Zitat von cyclic3.git(a)gmail.com: > > > I added an MDS, but there was no change in either output (apart from > > recognising the existence of an MDS) > > _______________________________________________ > > ceph-users mailing list -- ceph-users(a)ceph.io > > To unsubscribe send an email to ceph-users-leave(a)ceph.io > > > >