I'm working on adding some material to the PG-repair page on the docs website, and after a bit of reading and watching of videos, I have boiled it down to a couple of commands: Diagnose problems using this command: $ sudo ceph pg dump --format=json-pretty and then use the output of that command to discover the number of the placement group that is inconsistent or broken, and run a command that looks like this: $ sudo ceph pg repair 1.4 where "1.4" is the number of the affected placement group. This is a fine start, but I thought that I would ask everyone here for their experiences with "pg repair", because I'd like the docs to be a bit beefier than just a couple of commands. Thanks in advance everyone. Zac (The documentation guy)