Comment 31 for bug 1552042

From http://lists.openstack.org/pipermail/openstack-dev/2014-September/046764.html it sounds like the fallback to localfs is even possible with ubuntu 14.04, which is what we CI test with in OpenStack before Newton (and still in Newton for some jobs, but I think that's changing during the release so jobs are using ubuntu 16.04).

That thread also talks about enforcing no fallback to localfs only for certain virt_types (kvm/qemu), but not for example lxc - so what's proposed regarding removal? Total removal as https://review.openstack.org/#/c/324720/ proposes? Or only partial depending on configuration?