'Driver entry point to unattach a volume from an instance.
Unmask the LUN on the storage system so the given initiator can no
longer access it.'

def terminate_connection(self, volume, connector, **kwargs):

    initiator_name = connector['initiator']
    target_name = volume.provider_location
    self._tgt_utils.deassociate_initiator(initiator_name, target_name)
