82       host = self._hosts.popleft()
85       self._logger.info('Updating host %s' % host)
88           if not CheckSSH(host=host, options=self._options):
90           elif LockHost(host) and ImageHost(host=host, options=self._options):
95                 'Completed update for host %s successfully.' % host)
98             self._logger.info('Failed to SSH to host %s.' % host)
99             self._status.ssh_failures.append(host)
101             self._logger.info('Failed to update host %s.' % host)
102             self._status.update_failures.append(host)
104           UnlockHost(host)
108             'Exception encountered during update. Skipping host %s.' % host)
111 def CheckSSH(host, options):  argument
116       '%s/src/scripts/ssh_test.sh --remote=%s' % (options.gclient, host),
122 def ImageHost(host, options):  argument
126   log_file = open(os.path.join(options.log, host + '.log'), 'w')
127   log_file_err = open(os.path.join(options.log, host + '.log.err'), 'w')
132                                         options.url, host)),
143 def LockHost(host):  argument
149       '%s/atest host mod -l %s' % (AUTOTEST_LOCATION, host),
155     logging.getLogger().info('Failed to lock host %s.' % host)
160 def UnlockHost(host):  argument
166       '%s/atest host mod -u %s' % (AUTOTEST_LOCATION, host),
172     logging.getLogger().info('Failed to unlock host %s.' % host)
289     for host in status.ssh_failures:
290       logger.info('Failed to SSH to host %s.' % host)
292     for host in status.update_failures:
293       logger.info('Failed to update host %s.' % host)