diff options
Diffstat (limited to 'ironic_python_agent/extensions/image.py')
| -rw-r--r-- | ironic_python_agent/extensions/image.py | 66 |
1 files changed, 50 insertions, 16 deletions
diff --git a/ironic_python_agent/extensions/image.py b/ironic_python_agent/extensions/image.py index 8be09f12..603d6635 100644 --- a/ironic_python_agent/extensions/image.py +++ b/ironic_python_agent/extensions/image.py @@ -313,12 +313,43 @@ def _run_efibootmgr(valid_efi_bootloaders, device, efi_partition, # Update the nvram using efibootmgr # https://linux.die.net/man/8/efibootmgr utils.execute('efibootmgr', '-v', '-c', '-d', device, - '-p', efi_partition, '-w', '-L', label, + '-p', str(efi_partition), '-w', '-L', label, '-l', v_efi_bl_path) # Increment the ID in case the loop runs again. label_id += 1 +def get_partition_path_by_number(device, part_num): + """Get partition path (/dev/something) by a partition number on device. + + Only works for GPT partition table. + """ + uuid = None + partinfo, _ = utils.execute('sgdisk', '-i', str(part_num), device, + use_standard_locale=True) + for line in partinfo.splitlines(): + if not line.strip(): + continue + + try: + field, value = line.rsplit(':', 1) + except ValueError: + LOG.warning('Invalid sgdisk line: %s', line) + continue + + if 'partition unique guid' in field.lower(): + uuid = value.strip().lower() + LOG.debug('GPT partition number %s on device %s has UUID %s', + part_num, device, uuid) + break + + if uuid is not None: + return _get_partition(device, uuid) + else: + LOG.warning('No UUID information provided in sgdisk output for ' + 'partition %s on device %s', part_num, device) + + def _manage_uefi(device, efi_system_part_uuid=None): """Manage the device looking for valid efi bootloaders to update the nvram. @@ -334,24 +365,35 @@ def _manage_uefi(device, efi_system_part_uuid=None): """ efi_partition_mount_point = None efi_mounted = False - LOG.debug('Attempting UEFI loader autodetection and NVRAM record setup.') + efi_partition = None + try: # Force UEFI to rescan the device. _rescan_device(device) local_path = tempfile.mkdtemp() # Trust the contents on the disk in the event of a whole disk image. - efi_partition = utils.get_efi_part_on_device(device) + efi_part_num = utils.get_efi_part_on_device(device) + if efi_part_num is not None: + efi_partition = get_partition_path_by_number(device, efi_part_num) + if not efi_partition and efi_system_part_uuid: # _get_partition returns <device>+<partition> and we only need the # partition number - partition = _get_partition(device, uuid=efi_system_part_uuid) + efi_partition = _get_partition(device, uuid=efi_system_part_uuid) try: - efi_partition = int(partition.replace(device, "")) + efi_part_num = int(efi_partition.replace(device, "")) except ValueError: # NVMe Devices get a partitioning scheme that is different from # traditional block devices like SCSI/SATA - efi_partition = int(partition.replace(device + 'p', "")) + try: + efi_part_num = int(efi_partition.replace(device + 'p', "")) + except ValueError as exc: + # At least provide a reasonable error message if the device + # does not follow this procedure. + raise errors.DeviceNotFound( + "Cannot detect the partition number of the device " + "%s: %s" % (device, exc)) if not efi_partition: # NOTE(dtantsur): we cannot have a valid EFI deployment without an @@ -368,20 +410,12 @@ def _manage_uefi(device, efi_system_part_uuid=None): if not os.path.exists(efi_partition_mount_point): os.makedirs(efi_partition_mount_point) - # The mount needs the device with the partition, in case the - # device ends with a digit we add a `p` and the partition number we - # found, otherwise we just join the device and the partition number - if device[-1].isdigit(): - efi_device_part = '{}p{}'.format(device, efi_partition) - utils.execute('mount', efi_device_part, efi_partition_mount_point) - else: - efi_device_part = '{}{}'.format(device, efi_partition) - utils.execute('mount', efi_device_part, efi_partition_mount_point) + utils.execute('mount', efi_partition, efi_partition_mount_point) efi_mounted = True valid_efi_bootloaders = _get_efi_bootloaders(efi_partition_mount_point) if valid_efi_bootloaders: - _run_efibootmgr(valid_efi_bootloaders, device, efi_partition, + _run_efibootmgr(valid_efi_bootloaders, device, efi_part_num, efi_partition_mount_point) return True else: |