Hey Peter, the /var/lib/ceph directories mainly contain "meta data" that, depending on the ceph version and osd setup, can even be residing on tmpfs by default. Even if the data was on-disk, they are easy to recreate: -------------------------------------------------------------------------------- [root@rook-ceph-osd-36-6876cdb479-4764r ceph-36]# ls -l total 28 lrwxrwxrwx 1 ceph ceph 8 Feb 7 12:12 block -> /dev/sde -rw------- 1 ceph ceph 37 Feb 7 12:12 ceph_fsid -rw------- 1 ceph ceph 37 Feb 7 12:12 fsid -rw------- 1 ceph ceph 56 Feb 7 12:12 keyring -rw------- 1 ceph ceph 6 Feb 7 12:12 ready -rw------- 1 ceph ceph 3 Feb 7 12:12 require_osd_release -rw------- 1 ceph ceph 10 Feb 7 12:12 type -rw------- 1 ceph ceph 3 Feb 7 12:12 whoami [root@rook-ceph-osd-36-6876cdb479-4764r ceph-36]# -------------------------------------------------------------------------------- We used to create OSDs manually on alpine linux some years ago using [0], you can check it out as an inspiration for what should be in which file. BR, Nico [0] https://code.ungleich.ch/ungleich-public/ungleich-tools/src/branch/master/ceph/ceph-osd-create-start-alpine Peter van Heusden <pvh@xxxxxxxxxxx> writes: > Dear Ceph Community > > We have 5 OSD servers running Ceph v15.2.17. The host operating system is > Ubuntu 20.04. > > One of the servers has suffered corruption to its boot operating system. > Using a system rescue disk it is possible to mount the root filesystem but > it is not possible to boot the operating system at the moment. > > The OSDs are configured with (spinning disk) data drives, WALs and DBs on > partitions of SSDs, but from my examination of the filesystem the > configuration in /var/lib/ceph appears to be corrupted. > > So my question is: what is the best option for repair going forward? Is it > possible to do a clean install of the operating system and scan the > existing drives in order to reconstruct the OSD configuration? > > Thank you, > Peter > P.S. the cause of the original corruption is likely due to an unplanned > power outage, an event that hopefully will not recur. > _______________________________________________ > ceph-users mailing list -- ceph-users@xxxxxxx > To unsubscribe send an email to ceph-users-leave@xxxxxxx _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
 |