I was showing off my OpenStack dev cluster to a co-worker, and spouting off about how easy and user-proof live-migration is. I challenged him to try it, and he subsequently broke my OpenStack, by trying to live-migrate instances to a compute node targets whose FQDN doesn’t exist (using client CLI commands). Apparently this makes nova sit in a permanent “migration” state (see bug #1643623).
This is a companion discussion topic for the original entry at https://www.funkypenguin.co.nz/note/2017/07/05/novaexception-unsupported-vif-type-binding-failed-convert-nova-to-osvif-vif-binding-failed.html