[nova][neutron][ptg] Summary: Leaking resources when ports are deleted out-of-band

Summary: When a port is deleted out of band (while still attached to an instance), any associated QoS bandwidth resources are orphaned in placement. Consensus: - Neutron to block deleting a port whose "owner" field is set. - If you really want to do this, null the "owner" field first. - Nova still needs a way to delete the port during destroy. To be discussed. Possibilities: - Nova can null the "owner" field first. - The operation can be permitted with a certain policy role, which Nova would have to be granted. - Other? efried .