Hi Dhairya, On Mon, 12 Dec 2022, Dhairya Parmar wrote:
You might want to look at [1] for this, also I found a relevant thread [2] that could be helpful.
Thanks a lot. I already found [1,2], too. But I did not considered it, because I felt not having a "disaster"? Nothing seems broken nor crashed: all servers/services up since weeks. No disk failures, no modifications on cluster etc.
Also the Warning Box in [1] tells me (as a newbie) not to run anything of this. Or in other words: not to forcefully start a disaster ;-).
A follow-up of [2] also mentioned having random meta-data corruption: "We have 4 clusters (all running same version) and have experienced meta-data corruption on the majority of them at some time or the other"
[3] tells me, that metadata damage can happen either from data loss (which I'm convinced not to have), or from software bugs. The later would be worth fixing. Is there a way to find the root cause?
And is going through [1] relay the only option? It sounds being offline for days...
At least I know now, what dirfrags[4] are. Thanks, Sascha. [1] https://docs.ceph.com/en/latest/cephfs/disaster-recovery-experts/#disaster-recovery-experts [2] https://www.spinics.net/lists/ceph-users/msg53202.html [3] https://docs.ceph.com/en/quincy/cephfs/disaster-recovery/#metadata-damage-and-repair [4] https://docs.ceph.com/en/quincy/cephfs/dirfrags/ _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
