[ceph-users] Should OSD write error result in damaged filesystem?
bryanh at giraffe-data.com
Sat Nov 3 12:21:54 PDT 2018
I had a filesystem rank get damaged when the MDS had an error writing the log
to the OSD. Is damage expected when a log write fails?
According to log messages, an OSD write failed because the MDS attempted
to write a bigger chunk than the OSD's maximum write size. I can probably
figure out why that happened and fix it, but OSD write failures can happen for
lots of reasons, and I would have expected the MDS just to discard the recent
filesystem updates, issue a log message, and keep going. The user had
presumably not been told those updates were committed.
And how do I repair this now? Is this a job for
cephfs-journal-tool event recover_dentries
cephfs-journal-tool journal reset
This is Jewel.
Bryan Henderson San Jose, California
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