def test_md_present_no_proc_mdstat(self): mdname = 'md0' self.mock_util.side_effect = IOError md_is_present = mdadm.md_present(mdname) self.assertFalse(md_is_present) self.mock_util.load_file.assert_called_with('/proc/mdstat')
def test_md_present_none(self): mdname = '' self.mock_util.load_file.return_value = textwrap.dedent(""" Personalities : [raid1] [linear] [multipath] [raid0] [raid6] [raid5] [raid4] [raid10] md0 : active raid1 vdc1[1] vda2[0] 3143680 blocks super 1.2 [2/2] [UU] unused devices: <none> """) with self.assertRaises(ValueError): mdadm.md_present(mdname) # util.load_file should NOT have been called self.assertEqual([], self.mock_util.call_args_list)
def shutdown_mdadm(device): """ Shutdown specified mdadm device. """ blockdev = block.sysfs_to_devpath(device) LOG.info('Wiping superblock on raid device: %s', device) _wipe_superblock(blockdev, exclusive=False) md_devs = (mdadm.md_get_devices_list(blockdev) + mdadm.md_get_spares_list(blockdev)) mdadm.set_sync_action(blockdev, action="idle") mdadm.set_sync_action(blockdev, action="frozen") for mddev in md_devs: try: mdadm.fail_device(blockdev, mddev) mdadm.remove_device(blockdev, mddev) except util.ProcessExecutionError as e: LOG.debug('Non-fatal error clearing raid array: %s', e.stderr) pass LOG.debug('using mdadm.mdadm_stop on dev: %s', blockdev) mdadm.mdadm_stop(blockdev) for mddev in md_devs: mdadm.zero_device(mddev) # mdadm stop operation is asynchronous so we must wait for the kernel to # release resources. For more details see LP: #1682456 try: for wait in MDADM_RELEASE_RETRIES: if mdadm.md_present(block.path_to_kname(blockdev)): time.sleep(wait) else: LOG.debug('%s has been removed', blockdev) break if mdadm.md_present(block.path_to_kname(blockdev)): raise OSError('Timeout exceeded for removal of %s', blockdev) except OSError: LOG.critical('Failed to stop mdadm device %s', device) if os.path.exists('/proc/mdstat'): LOG.critical("/proc/mdstat:\n%s", util.load_file('/proc/mdstat')) raise
def test_md_present_with_dev_path(self): mdname = '/dev/md0' self.mock_util.load_file.return_value = textwrap.dedent(""" Personalities : [raid1] [linear] [multipath] [raid0] [raid6] [raid5] [raid4] [raid10] md0 : active raid1 vdc1[1] vda2[0] 3143680 blocks super 1.2 [2/2] [UU] unused devices: <none> """) md_is_present = mdadm.md_present(mdname) self.assertTrue(md_is_present) self.mock_util.load_file.assert_called_with('/proc/mdstat')
def test_md_present_not_found_check_matching(self): mdname = 'md1' found_mdname = 'md10' self.mock_util.load_file.return_value = textwrap.dedent(""" Personalities : [raid1] [linear] [multipath] [raid0] [raid6] [raid5] [raid4] [raid10] md10 : active raid1 vdc1[1] vda2[0] 3143680 blocks super 1.2 [2/2] [UU] unused devices: <none> """) md_is_present = mdadm.md_present(mdname) self.assertFalse(md_is_present, "%s mistakenly matched %s" % (mdname, found_mdname)) self.mock_util.load_file.assert_called_with('/proc/mdstat')
def shutdown_mdadm(device): """ Shutdown specified mdadm device. """ blockdev = block.sysfs_to_devpath(device) LOG.info('Discovering raid devices and spares for %s', device) md_devs = (mdadm.md_get_devices_list(blockdev) + mdadm.md_get_spares_list(blockdev)) mdadm.set_sync_action(blockdev, action="idle") mdadm.set_sync_action(blockdev, action="frozen") LOG.info('Wiping superblock on raid device: %s', device) try: _wipe_superblock(blockdev, exclusive=False) except ValueError as e: # if the array is not functional, writes to the device may fail # and _wipe_superblock will raise ValueError for short writes # which happens on inactive raid volumes. In that case we # shouldn't give up yet as we still want to disassemble # array and wipe members. Other errors such as IOError or OSError # are unwelcome and will stop deployment. LOG.debug( 'Non-fatal error writing to array device %s, ' 'proceeding with shutdown: %s', blockdev, e) LOG.info('Removing raid array members: %s', md_devs) for mddev in md_devs: try: mdadm.fail_device(blockdev, mddev) mdadm.remove_device(blockdev, mddev) except util.ProcessExecutionError as e: LOG.debug('Non-fatal error clearing raid array: %s', e.stderr) pass LOG.debug('using mdadm.mdadm_stop on dev: %s', blockdev) mdadm.mdadm_stop(blockdev) LOG.debug('Wiping mdadm member devices: %s' % md_devs) for mddev in md_devs: mdadm.zero_device(mddev, force=True) # mdadm stop operation is asynchronous so we must wait for the kernel to # release resources. For more details see LP: #1682456 try: for wait in MDADM_RELEASE_RETRIES: if mdadm.md_present(block.path_to_kname(blockdev)): time.sleep(wait) else: LOG.debug('%s has been removed', blockdev) break if mdadm.md_present(block.path_to_kname(blockdev)): raise OSError('Timeout exceeded for removal of %s', blockdev) except OSError: LOG.critical('Failed to stop mdadm device %s', device) if os.path.exists('/proc/mdstat'): LOG.critical("/proc/mdstat:\n%s", util.load_file('/proc/mdstat')) raise