Hi Everyone, I have a CephFS cluster that has MDS stuck in read only mode, and I do not know what can be done to return the cluster into the writable mode: health: HEALTH_WARN 1 MDSs are read only 1 MDSs behind on trimming How I got there: we have an FS where we store data in EC pool. We have one subdirectory that contains a lot of transitory data (constant write/read/delete). I wanted to put this subdirectory (let's call it /temp) into a separate replicated pool. I did: created replicated pool, added it to the FS, switched /temp to that replicated pool. All worked for about 24 hours and then became obvious it was not a good idea, so I reversed all steps: switched /temp to the original EC pool, removed replicated pool from FS, deleted the replicated pool. That is when MDS went into read only state. I can see inodes that were created in /temp when it belonged to the replicated pool. I tried many different things that I found in documentation, nothing works. What should I do in order for the FS become writable again? Thank you, --Max