Always fall back to sysrq when power off fails

The line we're looking for is not there when IPA is in a container, at least
for CentOS based containers. Just fall back to sysrq on errors.

Change-Id: Ie4ee605ad9c6cda58808512a563247175859c71e

ironic_python_agent/extensions/standby.py

@@ -748,15 +748,24 @@ class StandbyExtension(base.BaseAgentExtension):
             self.sync()
         except errors.CommandExecutionError as e:
             LOG.warning('Failed to sync file system buffers: % s', e)
+
         try:
             _, stderr = utils.execute(command, use_standard_locale=True)
-            if 'ignoring request.' in stderr:
+        except processutils.ProcessExecutionError as e:
-                LOG.debug('%s command failed with error %s, '
+            LOG.warning('%s command failed with error %s, '
-                          'falling back to sysrq-trigger.', command, stderr)
+                        'falling back to sysrq-trigger', command, e)
-                if command == 'poweroff':
+        else:
-                    utils.execute("echo o > /proc/sysrq-trigger", shell=True)
+            if 'ignoring request' in stderr:
-                elif command == 'reboot':
+                LOG.warning('%s command has been ignored, '
-                    utils.execute("echo b > /proc/sysrq-trigger", shell=True)
+                            'falling back to sysrq-trigger', command)
+            else:
+                return
+
+        try:
+            if command == 'poweroff':
+                utils.execute("echo o > /proc/sysrq-trigger", shell=True)
+            elif command == 'reboot':
+                utils.execute("echo b > /proc/sysrq-trigger", shell=True)
         except processutils.ProcessExecutionError as e:
             raise errors.SystemRebootError(e.exit_code, e.stdout, e.stderr)
 

ironic_python_agent/tests/unit/extensions/test_standby.py

@@ -1049,9 +1049,10 @@ class TestStandbyExtension(base.IronicAgentTest):
 
     @mock.patch('ironic_python_agent.utils.execute', autospec=True)
     def test_run_shutdown_command_valid_poweroff_sysrq(self, execute_mock):
-        execute_mock.side_effect = [('', ''), ('', ''), ('',
+        execute_mock.side_effect = [
-                                    'Running in chroot, ignoring request.'),
+            ('', ''), ('', ''),
-                                    ('', '')]
+            processutils.ProcessExecutionError(''),
+            ('', '')]
 
         self.agent_extension._run_shutdown_command('poweroff')
         calls = [mock.call('hwclock', '-v', '--systohc'),

releasenotes/notes/container-poweroff-d9ffb637cf1cee6c.yaml

@@ -0,0 +1,5 @@
+---
+fixes:
+  - |
+    Fixes fall-back to sysrq when powering off or rebooting the node from
+    inside a container.