path: sos_4.10.2-1/sos/report/plugins/xen.py
    def is_running_xenstored(self):
        """ Check if xenstored is running """
        xs_pid = self.exec_cmd("pidof xenstored")['output']
        xs_pidnum = re.split('\n$', xs_pid)[0]
        return xs_pidnum.isdigit()