Re: One mds daemon damaged, filesystem is offline. How to recover?

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 Out of the info now emerged so far seems Ceph client wanted to write an object of size 1555896 but managed to write only 1555896 bytes to the journal.
I think what we need to do now is:1. Get the MDS.0 recover, discard if necessary part of the object 200.00006048 and bring the MSD.0 up.
2. Do the same recovery for the MSD.1 as in step 1 and bring MDS.1 also up.
3. Above two steps to the most probability may bring CephFS up.
4. Once the CephFS is up, scan for corrupted files, remove them and bring from backup.
5. Get the MDS.2 to sync to MSD.0 or 1 and bring the cluster to sync'ed stage.

My question is, what exactly necessary to carry above step 1?
Sagara

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