def METHOD_NAME(self, orig=False):
    """ Open, or set up, a device. """
    log_method_call(self, self.name, orig=orig, status=self.status,
                    controllable=self.controllable)
    try:
        blockdev.loop.setup(self.parents[0].path)
    except blockdev.LoopError as e:
        raise errors.LoopError(e)