422     _qmp: Optional[QEMUMonitorProtocol] = None  variable in QemuStorageDaemon
439             self._qmp = QEMUMonitorProtocol(self._qmpsock, server=True)
444         if self._qmp is not None:
445             self._qmp.accept()
462         assert self._qmp is not None
463         return self._qmp.cmd_raw(cmd, args)
466         assert self._qmp is not None
467         return self._qmp
471         assert self._qmp is not None
472         return self._qmp.cmd(cmd, **(args or {}))
479         if self._qmp:
480             self._qmp.close()