code: def start(self, host="localhost", port=8999, disks=None):
          
          disks = [] if disks is None else disks
  
          args = {
              "host": host,
              "port": port,
              "disks": disks
          }
          self._rtinfo_start_params_chk.check(args)
  
          return self._client.json("rtinfo.start", args)
docs: Start rtinfo-client
          :param host: str rtinfod host address
          :param port: int rtinfod client port
          :param disks: list of prefixes of wathable disks (e.g ["sd"])