<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _get_stats(self):
 """ Get ceph stats """

        try:
            output = subprocess.check_output(['ceph', '-s'])
        except subprocess.CalledProcessError as err:
            self.log.info(
                'Could not get stats: %s' % err)
            self.log.exception('Could not get stats')
            return {}
        return process_ceph_status(output)