Hemanth Kumar: I think that you are the best to explain the situation and how to solve it. As you have exposed perfectly in your "workaround" procedure, there is a way to use EC pools for backing up cephfs. So this is not a cephadm issue, It is a cephadm enhancement. It is inside rhel 5.1 ... but i think that it will be nice to explain yout procedure in the downstream documentation Would you mind to follow the Aron instructions in https://bugzilla.redhat.com/show_bug.cgi?id=1922085#c2 to document this workaround properly in downstream documentation?
created a doc bz to track this issue until the Eng BZ is fixed : https://bugzilla.redhat.com/show_bug.cgi?id=1935644
moved to upstream: https://tracker.ceph.com/issues/50639 . This is going to require some bigger effort.