Comment 2 for bug 1815967

Actually, I'm not certain that LXD is a limitation for CephFS, since you can deploy it into Kubernetes: http://docs.ceph.com/docs/mimic/start/kube-helm/

That could actually be another approach, which I think we discussed previously; instead of relying on the cluster to provide a reliable storage provider, just require some random default storage class and when Juju creates a model (or lazily), deploy CephFS into the cluster and then use that for whatever storage Juju needs. We get the guarantee of full feature support, while keeping the pre-requirements to a minimum.