def attach_to_instance(self, instance, mountpoint):
        """
        Attaches this volume to the cloud server instance at the
        specified mountpoint. This requires a call to the cloud servers
        API; it cannot be done directly.
        """
        instance_id = _resolve_id(instance)
        try:
            resp = self._nova_volumes.create_server_volume(instance_id,
                    self.id, mountpoint)
        except Exception as e:
            raise exc.VolumeAttachmentFailed("%s" % e)
def attach_to_instance ( self , instance , mountpoint ) : instance_id = _resolve_id ( instance ) try : resp = self . _nova_volumes . create_server_volume ( instance_id , self . id , mountpoint ) except Exception as e : raise exc . VolumeAttachmentFailed ( "%s" % e )
Attaches this volume to the cloud server instance at the
        specified mountpoint. This requires a call to the cloud servers
        API; it cannot be done directly.