Comment 9 for bug 2058636

Fwiw, 17.2.7 is yet another big stable release to Quincy with 1,446 commits including many backports from Reef.
https://github.com/ceph/ceph/compare/v17.2.6...v17.2.7

And Ubuntu introduced it roughly 10 days ago.
https://bugs.launchpad.net/ubuntu/+source/ceph/+bug/2043336

That explains why we needed to backport multiple charm patches from Reef to Quincy on some level although I cannot pinpoint the upstream commit out of 1,000+ easily.