After following up some problem, I now can't start the Docker service.   Firstly I was adding a new docker, but it failed because of a read error. I checked system logs, saw a bunch of "BTRFS error (device loop2): parent transid verify failed" errors. I tried to stop the array but it never finished the process, I tried to safe reboot but it wouldn't so I pulled the power. After rebooting, eventually searching the forums led me to delete the Docker image   When