I'm having an issue where I see SAB frozen. I can shut it down but then can't restart it. Multiple attempts, sometimes it shows it's started and using around 250mb memory, but still non-responsive.  Same thing happened with plex last night however on the third attempt plex started and stayed started. Now Sabnabd is doing the same there where it wants to start but hangs for a big, shows it's started, but then drops back off line. Does the server hate it when the cache drives are filled? It's possible that's happened.  I keep activating the "mover" but it doesn't seem to want to move very fast. 

tower-diagnostics-20210622-0809.zip

Cache pool is completely full and gone read only, reboot, don't stat docker and try to immediatly free up some space, only after that is done start docker engine.

Forgot to mention pool needs rebalancing since it has multiple data profiles, you should have gotten a notification about that.