'Cleanup after an iSCSI connection has been terminated.'

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

    host = (connector['host'] if ('host' in connector) else '')
    @utils.synchronized((('storwize-host' + self._state['system_id']) + host), external=True)
    def _do_terminate_connection_locked():
        return self._do_terminate_connection(volume, connector, **kwargs)
    return _do_terminate_connection_locked()
