Comment 10 for bug 1788722

We are also trying to figure out why an upgrade took place.

https://github.com/openstack/charm-ceph-osd/blob/stable/17.11/hooks/ceph_hooks.py#L85
Lines 102 and 106 would have stopped that from occurring unless ceph itself had a major version upgrade.

Is it possible that ceph was upgraded as well? What are the versions of ceph involved before and after?