Ceph » Orchestrator

After deleting testing CephFS volumes with ceph fs volume rm and then upgrading the cluster from 17.2.5 to 17.2.6 I noticed MDS running for all the already-removed CephFS volumes. Pretty sure they were stopped after the ceph fs volume rm but cannot say for sure about that - they definitely are running now.

As listed in https://tracker.ceph.com/issues/48597 the mds_join_fs exists for all of the already-removed CephFS volumes.
Additionally the data & metadata pools exist for all the already-removed CephFS volumes.

Currently the only documentation that I could find about removing CephFS volumes is at https://docs.ceph.com/en/latest/cephfs/fs-volumes/#fs-volumes which says to simply ceph fs volume rm the volume which should "try to remove" the running MDS as well.

But this documentation seems far from complete as it does not mention that:

1. The data & metadata pools are not removed.
2. The mds_join_fs exist after the pools are removed.
3. The MDS are running (again?) after the pools are removed. (related to #2?)

The documentation makes it seem like you just need ceph fs volume rm and you're good. But that doesn't seem to be the case at all!
The documentation should be improved to at minimum list what are the leftovers after ceph fs volume rm and possibly what to do to clean the leftovers.