762 lines
33 KiB
Python
762 lines
33 KiB
Python
# Copyright 2015 Red Hat, Inc.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import os
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import re
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import shlex
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import shutil
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import stat
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import tempfile
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from ironic_lib import utils as ilib_utils
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from oslo_concurrency import processutils
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from oslo_log import log
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from ironic_python_agent import errors
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from ironic_python_agent.extensions import base
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from ironic_python_agent.extensions import iscsi
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from ironic_python_agent import hardware
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from ironic_python_agent import raid_utils
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from ironic_python_agent import utils
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LOG = log.getLogger(__name__)
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BIND_MOUNTS = ('/dev', '/proc', '/run')
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BOOTLOADERS_EFI = ['bootx64.efi', 'grubaa64.efi', 'winload.efi']
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def _rescan_device(device):
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"""Force the device to be rescanned
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:param device: device upon which to rescan and update
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kernel partition records.
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"""
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try:
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utils.execute('partx', '-u', device, attempts=3,
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delay_on_retry=True)
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utils.execute('udevadm', 'settle')
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except processutils.ProcessExecutionError:
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LOG.warning("Couldn't re-read the partition table "
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"on device %s", device)
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def _get_partition(device, uuid):
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"""Find the partition of a given device."""
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LOG.debug("Find the partition %(uuid)s on device %(dev)s",
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{'dev': device, 'uuid': uuid})
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try:
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_rescan_device(device)
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lsblk = utils.execute('lsblk', '-PbioKNAME,UUID,PARTUUID,TYPE', device)
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report = lsblk[0]
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for line in report.split('\n'):
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part = {}
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# Split into KEY=VAL pairs
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vals = shlex.split(line)
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for key, val in (v.split('=', 1) for v in vals):
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part[key] = val.strip()
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# Ignore non partition
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if part.get('TYPE') not in ['md', 'part']:
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# NOTE(TheJulia): This technically creates an edge failure
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# case where a filesystem on a whole block device sans
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# partitioning would behave differently.
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continue
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if part.get('UUID') == uuid:
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LOG.debug("Partition %(uuid)s found on device "
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"%(dev)s", {'uuid': uuid, 'dev': device})
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return '/dev/' + part.get('KNAME')
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if part.get('PARTUUID') == uuid:
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LOG.debug("Partition %(uuid)s found on device "
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"%(dev)s", {'uuid': uuid, 'dev': device})
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return '/dev/' + part.get('KNAME')
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else:
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# NOTE(TheJulia): We may want to consider moving towards using
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# findfs in the future, if we're comfortable with the execution
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# and interaction. There is value in either way though.
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# NOTE(rg): alternative: blkid -l -t UUID=/PARTUUID=
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try:
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findfs, stderr = utils.execute('findfs', 'UUID=%s' % uuid)
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return findfs.strip()
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except processutils.ProcessExecutionError as e:
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LOG.debug('First fallback detection attempt for locating '
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'partition via UUID %(uuid)s failed. '
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'Error: %(err)s',
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{'uuid': uuid,
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'err': e})
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try:
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findfs, stderr = utils.execute(
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'findfs', 'PARTUUID=%s' % uuid)
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return findfs.strip()
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except processutils.ProcessExecutionError as e:
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LOG.debug('Secondary fallback detection attempt for '
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'locating partition via UUID %(uuid)s failed. '
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'Error: %(err)s',
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{'uuid': uuid,
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'err': e})
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# Last fallback: In case we cannot find the partition by UUID
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# and the deploy device is an md device, we check if the md
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# device has a partition (which we assume to contain the root fs).
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if hardware.is_md_device(device):
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md_partition = device + 'p1'
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if (os.path.exists(md_partition)
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and stat.S_ISBLK(os.stat(md_partition).st_mode)):
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LOG.debug("Found md device with partition %s",
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md_partition)
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return md_partition
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else:
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LOG.debug('Could not find partition %(part)s on md '
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'device %(dev)s',
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{'part': md_partition,
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'dev': device})
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# Partition not found, time to escalate.
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error_msg = ("No partition with UUID %(uuid)s found on "
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"device %(dev)s" % {'uuid': uuid, 'dev': device})
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LOG.error(error_msg)
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raise errors.DeviceNotFound(error_msg)
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except processutils.ProcessExecutionError as e:
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error_msg = ('Finding the partition with UUID %(uuid)s on '
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'device %(dev)s failed with %(err)s' %
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{'uuid': uuid, 'dev': device, 'err': e})
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LOG.error(error_msg)
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raise errors.CommandExecutionError(error_msg)
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def _has_dracut(root):
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try:
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utils.execute('chroot %(path)s /bin/sh -c '
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'"which dracut"' %
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{'path': root}, shell=True)
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except processutils.ProcessExecutionError:
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return False
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return True
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def _has_boot_sector(device):
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"""Checks the device for a boot sector indicator."""
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stdout, stderr = utils.execute('file', '-s', device)
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if 'boot sector' not in stdout:
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return False
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# Now lets check the signature
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ddout, dderr = utils.execute(
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'dd', 'if=%s' % device, 'bs=218', 'count=1', binary=True)
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stdout, stderr = utils.execute('file', '-', process_input=ddout)
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# The bytes recovered by dd show as a "dos executable" when
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# examined with file. In other words, the bootloader is present.
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return 'executable' in stdout
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def _find_bootable_device(partitions, dev):
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"""Checks the base device and partition for bootloader contents."""
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LOG.debug('Looking for a bootable device in %s', dev)
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for line in partitions.splitlines():
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partition = line.split(':')
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try:
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if 'boot' in partition[6]:
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if _has_boot_sector(dev) or _has_boot_sector(partition[0]):
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return True
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except IndexError:
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continue
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return False
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def _is_bootloader_loaded(dev):
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"""Checks the device to see if a MBR bootloader is present.
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:param str dev: Block device upon which to check if it appears
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to be bootable via MBR.
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:returns: True if a device appears to be bootable with a boot
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loader, otherwise False.
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"""
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boot = hardware.dispatch_to_managers('get_boot_info')
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if boot.current_boot_mode != 'bios':
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# We're in UEFI mode, this logic is invalid
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LOG.debug('Skipping boot sector check as the system is in UEFI '
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'boot mode.')
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return False
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LOG.debug('Starting check for pre-intalled BIOS boot-loader.')
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try:
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# Looking for things marked "bootable" in the partition table
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stdout, stderr = utils.execute('parted', dev, '-s', '-m',
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'--', 'print')
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except processutils.ProcessExecutionError:
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return False
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return _find_bootable_device(stdout, dev)
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def _get_efi_bootloaders(location):
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"""Get all valid efi bootloaders in a given location
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:param location: the location where it should start looking for the
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efi files.
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:return: a list of valid efi bootloaders
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"""
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# Let's find all files with .efi or .EFI extension
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LOG.debug('Looking for all efi files on %s', location)
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valid_bootloaders = []
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for root, dirs, files in os.walk(location):
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efi_files = [f for f in files if f.lower() in BOOTLOADERS_EFI]
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LOG.debug('efi files found in %(location)s : %(efi_files)s',
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{'location': location, 'efi_files': str(efi_files)})
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for name in efi_files:
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efi_f = os.path.join(root, name)
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LOG.debug('Checking if %s is executable', efi_f)
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if os.access(efi_f, os.X_OK):
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v_bl = efi_f.split('/boot/efi')[-1].replace('/', '\\')
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LOG.debug('%s is a valid bootloader', v_bl)
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valid_bootloaders.append(v_bl)
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return valid_bootloaders
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def _run_efibootmgr(valid_efi_bootloaders, device, efi_partition):
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"""Executes efibootmgr and removes duplicate entries.
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:param valid_efi_bootloaders: the list of valid efi bootloaders
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:param device: the device to be used
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:param efi_partition: the efi partition on the device
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"""
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# Before updating let's get information about the bootorder
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LOG.debug("Getting information about boot order")
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utils.execute('efibootmgr')
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# NOTE(iurygregory): regex used to identify the Warning in the stderr after
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# we add the new entry. Example:
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# "efibootmgr: ** Warning ** : Boot0004 has same label ironic"
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duplicated_label = re.compile(r'^.*:\s\*\*.*\*\*\s:\s.*'
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r'Boot([0-9a-f-A-F]+)\s.*$')
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label_id = 1
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for v_efi_bl_path in valid_efi_bootloaders:
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# Update the nvram using efibootmgr
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# https://linux.die.net/man/8/efibootmgr
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label = 'ironic' + str(label_id)
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LOG.debug("Adding loader %(path)s on partition %(part)s of device "
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" %(dev)s", {'path': v_efi_bl_path, 'part': efi_partition,
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'dev': device})
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cmd = utils.execute('efibootmgr', '-c', '-d', device,
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'-p', efi_partition, '-w', '-L', label,
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'-l', v_efi_bl_path)
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for line in cmd[1].split('\n'):
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match = duplicated_label.match(line)
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if match:
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boot_num = match.group(1)
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LOG.debug("Found bootnum %s matching label", boot_num)
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utils.execute('efibootmgr', '-b', boot_num, '-B')
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label_id += 1
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def _manage_uefi(device, efi_system_part_uuid=None):
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"""Manage the device looking for valid efi bootloaders to update the nvram.
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This method checks for valid efi bootloaders in the device, if they exists
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it updates the nvram using the efibootmgr.
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:param device: the device to be checked.
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:param efi_system_part_uuid: efi partition uuid.
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:return: True - if it founds any efi bootloader and the nvram was updated
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using the efibootmgr.
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False - if no efi bootloader is found.
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"""
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efi_partition_mount_point = None
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efi_mounted = False
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try:
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# Force UEFI to rescan the device. Required if the deployment
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# was over iscsi.
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_rescan_device(device)
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local_path = tempfile.mkdtemp()
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# Trust the contents on the disk in the event of a whole disk image.
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efi_partition = utils.get_efi_part_on_device(device)
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if not efi_partition:
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# _get_partition returns <device>+<partition> and we only need the
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# partition number
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partition = _get_partition(device, uuid=efi_system_part_uuid)
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efi_partition = int(partition.replace(device, ""))
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if efi_partition:
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efi_partition_mount_point = os.path.join(local_path, "boot/efi")
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if not os.path.exists(efi_partition_mount_point):
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os.makedirs(efi_partition_mount_point)
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# The mount needs the device with the partition, in case the
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# device ends with a digit we add a `p` and the partition number we
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# found, otherwise we just join the device and the partition number
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if device[-1].isdigit():
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efi_device_part = '{}p{}'.format(device, efi_partition)
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utils.execute('mount', efi_device_part,
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efi_partition_mount_point)
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else:
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efi_device_part = '{}{}'.format(device, efi_partition)
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utils.execute('mount', efi_device_part,
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efi_partition_mount_point)
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efi_mounted = True
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else:
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# If we can't find the partition we need to decide what should
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# happen
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return False
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valid_efi_bootloaders = _get_efi_bootloaders(efi_partition_mount_point)
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if valid_efi_bootloaders:
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_run_efibootmgr(valid_efi_bootloaders, device, efi_partition)
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return True
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else:
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return False
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except processutils.ProcessExecutionError as e:
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error_msg = ('Could not verify uefi on device %(dev)s'
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'failed with %(err)s.' % {'dev': device, 'err': e})
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LOG.error(error_msg)
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raise errors.CommandExecutionError(error_msg)
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finally:
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umount_warn_msg = "Unable to umount %(local_path)s. Error: %(error)s"
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try:
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if efi_mounted:
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utils.execute('umount', efi_partition_mount_point,
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attempts=3, delay_on_retry=True)
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except processutils.ProcessExecutionError as e:
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error_msg = ('Umounting efi system partition failed. '
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'Attempted 3 times. Error: %s' % e)
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LOG.error(error_msg)
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raise errors.CommandExecutionError(error_msg)
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else:
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# If umounting the binds succeed then we can try to delete it
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try:
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utils.execute('sync')
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except processutils.ProcessExecutionError as e:
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LOG.warning(umount_warn_msg, {'path': local_path, 'error': e})
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else:
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# After everything is umounted we can then remove the
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# temporary directory
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shutil.rmtree(local_path)
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# TODO(rg): handle PreP boot parts relocation as well
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def _prepare_boot_partitions_for_softraid(device, holders, efi_part,
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target_boot_mode):
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"""Prepare boot partitions when relevant.
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Create either efi partitions or bios boot partitions for softraid,
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according to both target boot mode and disk holders partition table types.
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:param device: the softraid device path
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:param holders: the softraid drive members
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:param efi_part: when relevant the efi partition coming from the image
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deployed on softraid device, can be/is often None
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:param target_boot_mode: target boot mode can be bios/uefi/None
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or anything else for unspecified
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:returns: the efi partition paths on softraid disk holders when target
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boot mode is uefi, empty list otherwise.
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"""
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efi_partitions = []
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# Actually any fat partition could be a candidate. Let's assume the
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# partition also has the esp flag
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if target_boot_mode == 'uefi':
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if not efi_part:
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LOG.debug("No explicit EFI partition provided. Scanning for any "
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"EFI partition located on software RAID device %s to "
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"be relocated",
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device)
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# NOTE: for whole disk images, no efi part uuid will be provided.
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# Let's try to scan for esp on the root softraid device. If not
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# found, it's fine in most cases to just create an empty esp and
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# let grub handle the magic.
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efi_part = utils.get_efi_part_on_device(device)
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if efi_part:
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efi_part = '{}p{}'.format(device, efi_part)
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LOG.info("Creating EFI partitions on software RAID holder disks")
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# We know that we kept this space when configuring raid,see
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# hardware.GenericHardwareManager.create_configuration.
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# We could also directly get the EFI partition size.
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partsize_mib = raid_utils.ESP_SIZE_MIB
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partlabel_prefix = 'uefi-holder-'
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for number, holder in enumerate(holders):
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# NOTE: see utils.get_partition_table_type_from_specs
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# for uefi we know that we have setup a gpt partition table,
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# sgdisk can be used to edit table, more user friendly
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# for alignment and relative offsets
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partlabel = '{}{}'.format(partlabel_prefix, number)
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out, _u = utils.execute('sgdisk', '-F', holder)
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start_sector = '{}s'.format(out.splitlines()[-1].strip())
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out, _u = utils.execute(
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'sgdisk', '-n', '0:{}:+{}MiB'.format(start_sector,
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partsize_mib),
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'-t', '0:ef00', '-c', '0:{}'.format(partlabel), holder)
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# Refresh part table
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utils.execute("partprobe")
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utils.execute("blkid")
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target_part, _u = utils.execute(
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"blkid", "-l", "-t", "PARTLABEL={}".format(partlabel), holder)
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target_part = target_part.splitlines()[-1].split(':', 1)[0]
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LOG.debug("EFI partition %s created on holder disk %s",
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target_part, holder)
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if efi_part:
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LOG.debug("Relocating EFI %s to holder part %s", efi_part,
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target_part)
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# Blockdev copy
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utils.execute("cp", efi_part, target_part)
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else:
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# Creating a label is just to make life easier
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if number == 0:
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fslabel = 'efi-part'
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else:
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# bak, label is limited to 11 chars
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fslabel = 'efi-part-b'
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ilib_utils.mkfs(fs='vfat', path=target_part, label=fslabel)
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efi_partitions.append(target_part)
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# TBD: Would not hurt to destroy source efi part when defined,
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# for clarity.
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elif target_boot_mode == 'bios':
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partlabel_prefix = 'bios-boot-part-'
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for number, holder in enumerate(holders):
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label = utils.scan_partition_table_type(holder)
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if label == 'gpt':
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LOG.debug("Creating bios boot partition on disk holder %s",
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holder)
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out, _u = utils.execute('sgdisk', '-F', holder)
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start_sector = '{}s'.format(out.splitlines()[-1].strip())
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partlabel = '{}{}'.format(partlabel_prefix, number)
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out, _u = utils.execute(
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'sgdisk', '-n', '0:{}:+2MiB'.format(start_sector),
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'-t', '0:ef02', '-c', '0:{}'.format(partlabel), holder)
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# Q: MBR case, could we dd the boot code from the softraid
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# (446 first bytes) if we detect a bootloader with
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# _is_bootloader_loaded?
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# A: This won't work. Because it includes the address on the
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# disk, as in virtual disk, where to load the data from.
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# Since there is a structural difference, this means it will
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# fail.
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# Just an empty list if not uefi boot mode, nvm, not used anyway
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return efi_partitions
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def _umount_all_partitions(path, path_variable, umount_warn_msg):
|
|
"""Umount all partitions we may have mounted"""
|
|
umount_binds_success = True
|
|
LOG.debug("Unmounting all vfat partitions inside the image ...")
|
|
try:
|
|
utils.execute('chroot %(path)s /bin/sh -c "umount -a -t vfat"' %
|
|
{'path': path}, shell=True,
|
|
env_variables={'PATH': path_variable})
|
|
except processutils.ProcessExecutionError as e:
|
|
LOG.warning("Unable to umount vfat partitions. Error: %(error)s",
|
|
{'error': e})
|
|
|
|
for fs in BIND_MOUNTS + ('/sys',):
|
|
try:
|
|
utils.execute('umount', path + fs, attempts=3,
|
|
delay_on_retry=True)
|
|
except processutils.ProcessExecutionError as e:
|
|
umount_binds_success = False
|
|
LOG.warning(umount_warn_msg, {'path': path + fs, 'error': e})
|
|
|
|
return umount_binds_success
|
|
|
|
|
|
def _install_grub2(device, root_uuid, efi_system_part_uuid=None,
|
|
prep_boot_part_uuid=None, target_boot_mode='bios'):
|
|
"""Install GRUB2 bootloader on a given device."""
|
|
LOG.debug("Installing GRUB2 bootloader on device %s", device)
|
|
|
|
efi_partitions = None
|
|
efi_part = None
|
|
efi_partition_mount_point = None
|
|
efi_mounted = False
|
|
holders = None
|
|
|
|
# NOTE(TheJulia): Seems we need to get this before ever possibly
|
|
# restart the device in the case of multi-device RAID as pyudev
|
|
# doesn't exactly like the partition disappearing.
|
|
root_partition = _get_partition(device, uuid=root_uuid)
|
|
|
|
# If the root device is an md device (or partition), restart the device
|
|
# (to help grub finding it) and identify the underlying holder disks
|
|
# to install grub.
|
|
if hardware.is_md_device(device):
|
|
# If the root device is an md device (or partition),
|
|
# restart the device to help grub find it later on.
|
|
hardware.md_restart(device)
|
|
# If an md device, we need to rescan the devices anyway to pickup
|
|
# the md device partition.
|
|
_rescan_device(device)
|
|
elif (_is_bootloader_loaded(device)
|
|
and not (efi_system_part_uuid
|
|
or prep_boot_part_uuid)):
|
|
# We always need to put the bootloader in place with software raid
|
|
# so it is okay to elif into the skip doing a bootloader step.
|
|
LOG.info("Skipping installation of bootloader on device %s "
|
|
"as it is already marked bootable.", device)
|
|
return
|
|
|
|
try:
|
|
# Add /bin to PATH variable as grub requires it to find efibootmgr
|
|
# when running in uefi boot mode.
|
|
# Add /usr/sbin to PATH variable to ensure it is there as we do
|
|
# not use full path to grub binary anymore.
|
|
path_variable = os.environ.get('PATH', '')
|
|
path_variable = '%s:/bin:/usr/sbin:/sbin' % path_variable
|
|
|
|
# Mount the partition and binds
|
|
path = tempfile.mkdtemp()
|
|
if efi_system_part_uuid:
|
|
efi_part = _get_partition(device, uuid=efi_system_part_uuid)
|
|
efi_partitions = [efi_part]
|
|
|
|
if hardware.is_md_device(device):
|
|
holders = hardware.get_holder_disks(device)
|
|
efi_partitions = _prepare_boot_partitions_for_softraid(
|
|
device, holders, efi_part, target_boot_mode
|
|
)
|
|
|
|
if efi_partitions:
|
|
efi_partition_mount_point = os.path.join(path, "boot/efi")
|
|
|
|
# For power we want to install grub directly onto the PreP partition
|
|
if prep_boot_part_uuid:
|
|
device = _get_partition(device, uuid=prep_boot_part_uuid)
|
|
|
|
# If the root device is an md device (or partition),
|
|
# identify the underlying holder disks to install grub.
|
|
if hardware.is_md_device(device):
|
|
disks = holders
|
|
else:
|
|
disks = [device]
|
|
|
|
utils.execute('mount', root_partition, path)
|
|
for fs in BIND_MOUNTS:
|
|
utils.execute('mount', '-o', 'bind', fs, path + fs)
|
|
|
|
utils.execute('mount', '-t', 'sysfs', 'none', path + '/sys')
|
|
|
|
binary_name = "grub"
|
|
if os.path.exists(os.path.join(path, 'usr/sbin/grub2-install')):
|
|
binary_name = "grub2"
|
|
|
|
# Mount all vfat partitions listed in the fstab of the root partition.
|
|
# This is to make sure grub2 finds all files it needs, as some of them
|
|
# may not be inside the root partition but in the ESP (like grub2env).
|
|
LOG.debug("Mounting all partitions inside the image ...")
|
|
utils.execute('chroot %(path)s /bin/sh -c "mount -a -t vfat"' %
|
|
{'path': path}, shell=True,
|
|
env_variables={'PATH': path_variable})
|
|
|
|
if efi_partitions:
|
|
if not os.path.exists(efi_partition_mount_point):
|
|
os.makedirs(efi_partition_mount_point)
|
|
LOG.info("GRUB2 will be installed for UEFI on efi partitions %s",
|
|
efi_partitions)
|
|
for efi_partition in efi_partitions:
|
|
utils.execute(
|
|
'mount', efi_partition, efi_partition_mount_point)
|
|
efi_mounted = True
|
|
# FIXME(rg): does not work in cross boot mode case (target
|
|
# boot mode differs from ramdisk one)
|
|
# Probe for the correct target (depends on the arch, example
|
|
# --target=x86_64-efi)
|
|
utils.execute('chroot %(path)s /bin/sh -c '
|
|
'"%(bin)s-install"' %
|
|
{'path': path, 'bin': binary_name},
|
|
shell=True,
|
|
env_variables={
|
|
'PATH': path_variable
|
|
})
|
|
# Also run grub-install with --removable, this installs grub to
|
|
# the EFI fallback path. Useful if the NVRAM wasn't written
|
|
# correctly, was reset or if testing with virt as libvirt
|
|
# resets the NVRAM on instance start.
|
|
# This operation is essentially a copy operation. Use of the
|
|
# --removable flag, per the grub-install source code changes
|
|
# the default file to be copied, destination file name, and
|
|
# prevents NVRAM from being updated.
|
|
# We only run grub2_install for uefi if we can't verify the
|
|
# uefi bits
|
|
utils.execute('chroot %(path)s /bin/sh -c '
|
|
'"%(bin)s-install --removable"' %
|
|
{'path': path, 'bin': binary_name},
|
|
shell=True,
|
|
env_variables={
|
|
'PATH': path_variable
|
|
})
|
|
utils.execute('umount', efi_partition_mount_point, attempts=3,
|
|
delay_on_retry=True)
|
|
efi_mounted = False
|
|
# NOTE: probably never needed for grub-mkconfig, does not hurt in
|
|
# case of doubt, cleaned in the finally clause anyway
|
|
utils.execute('mount', efi_partitions[0],
|
|
efi_partition_mount_point)
|
|
efi_mounted = True
|
|
else:
|
|
# FIXME(rg): does not work if ramdisk boot mode is not the same
|
|
# as the target (--target=i386-pc, arch dependent).
|
|
# See previous FIXME
|
|
|
|
# Install grub. Normally, grub goes to one disk only. In case of
|
|
# md devices, grub goes to all underlying holder (RAID-1) disks.
|
|
LOG.info("GRUB2 will be installed on disks %s", disks)
|
|
for grub_disk in disks:
|
|
LOG.debug("Installing GRUB2 on disk %s", grub_disk)
|
|
utils.execute(
|
|
'chroot %(path)s /bin/sh -c "%(bin)s-install %(dev)s"' %
|
|
{
|
|
'path': path,
|
|
'bin': binary_name,
|
|
'dev': grub_disk
|
|
},
|
|
shell=True,
|
|
env_variables={
|
|
'PATH': path_variable
|
|
}
|
|
)
|
|
LOG.debug("GRUB2 successfully installed on device %s",
|
|
grub_disk)
|
|
|
|
# If the image has dracut installed, set the rd.md.uuid kernel
|
|
# parameter for discovered md devices.
|
|
if hardware.is_md_device(device) and _has_dracut(path):
|
|
rd_md_uuids = ["rd.md.uuid=%s" % x['UUID']
|
|
for x in hardware.md_get_raid_devices().values()]
|
|
|
|
LOG.debug("Setting rd.md.uuid kernel parameters: %s", rd_md_uuids)
|
|
with open('%s/etc/default/grub' % path, 'r') as g:
|
|
contents = g.read()
|
|
with open('%s/etc/default/grub' % path, 'w') as g:
|
|
g.write(
|
|
re.sub(r'GRUB_CMDLINE_LINUX="(.*)"',
|
|
r'GRUB_CMDLINE_LINUX="\1 %s"'
|
|
% " ".join(rd_md_uuids),
|
|
contents))
|
|
|
|
# Generate the grub configuration file
|
|
utils.execute('chroot %(path)s /bin/sh -c '
|
|
'"%(bin)s-mkconfig -o '
|
|
'/boot/%(bin)s/grub.cfg"' %
|
|
{'path': path, 'bin': binary_name}, shell=True,
|
|
env_variables={'PATH': path_variable})
|
|
|
|
LOG.info("GRUB2 successfully installed on %s", device)
|
|
|
|
except processutils.ProcessExecutionError as e:
|
|
error_msg = ('Installing GRUB2 boot loader to device %(dev)s '
|
|
'failed with %(err)s.' % {'dev': device, 'err': e})
|
|
LOG.error(error_msg)
|
|
raise errors.CommandExecutionError(error_msg)
|
|
|
|
finally:
|
|
# Umount binds and partition
|
|
umount_warn_msg = "Unable to umount %(path)s. Error: %(error)s"
|
|
|
|
# If umount fails for efi partition, then we cannot be sure that all
|
|
# the changes were written back to the filesystem.
|
|
try:
|
|
if efi_mounted:
|
|
utils.execute('umount', efi_partition_mount_point, attempts=3,
|
|
delay_on_retry=True)
|
|
except processutils.ProcessExecutionError as e:
|
|
error_msg = ('Umounting efi system partition failed. '
|
|
'Attempted 3 times. Error: %s' % e)
|
|
LOG.error(error_msg)
|
|
raise errors.CommandExecutionError(error_msg)
|
|
|
|
# If umounting the binds succeed then we can try to delete it
|
|
if _umount_all_partitions(path, path_variable, umount_warn_msg):
|
|
try:
|
|
utils.execute('umount', path, attempts=3, delay_on_retry=True)
|
|
except processutils.ProcessExecutionError as e:
|
|
LOG.warning(umount_warn_msg, {'path': path, 'error': e})
|
|
else:
|
|
# After everything is umounted we can then remove the
|
|
# temporary directory
|
|
shutil.rmtree(path)
|
|
|
|
|
|
class ImageExtension(base.BaseAgentExtension):
|
|
|
|
@base.async_command('install_bootloader')
|
|
def install_bootloader(self, root_uuid, efi_system_part_uuid=None,
|
|
prep_boot_part_uuid=None,
|
|
target_boot_mode='bios'):
|
|
"""Install the GRUB2 bootloader on the image.
|
|
|
|
:param root_uuid: The UUID of the root partition.
|
|
:param efi_system_part_uuid: The UUID of the efi system partition.
|
|
To be used only for uefi boot mode. For uefi boot mode, the
|
|
boot loader will be installed here.
|
|
:param prep_boot_part_uuid: The UUID of the PReP Boot partition.
|
|
Used only for booting ppc64* partition images locally. In this
|
|
scenario the bootloader will be installed here.
|
|
:param target_boot_mode: bios, uefi. Only taken into account
|
|
for softraid, when no efi partition is explicitely provided
|
|
(happens for whole disk images)
|
|
:raises: CommandExecutionError if the installation of the
|
|
bootloader fails.
|
|
:raises: DeviceNotFound if the root partition is not found.
|
|
|
|
"""
|
|
device = hardware.dispatch_to_managers('get_os_install_device')
|
|
if self.agent.iscsi_started:
|
|
iscsi.clean_up(device)
|
|
|
|
boot = hardware.dispatch_to_managers('get_boot_info')
|
|
if boot.current_boot_mode != target_boot_mode:
|
|
LOG.warning('Boot mode mismatch: target boot mode is %(target)s, '
|
|
'current boot mode is %(current)s. Installing boot '
|
|
'loader may fail or work incorrectly.',
|
|
{'target': target_boot_mode,
|
|
'current': boot.current_boot_mode})
|
|
|
|
# FIXME(arne_wiebalck): make software RAID work with efibootmgr
|
|
if (boot.current_boot_mode == 'uefi'
|
|
and not hardware.is_md_device(device)):
|
|
has_efibootmgr = True
|
|
try:
|
|
utils.execute('efibootmgr', '--version')
|
|
except FileNotFoundError:
|
|
LOG.warning("efibootmgr is not available in the ramdisk")
|
|
has_efibootmgr = False
|
|
|
|
if has_efibootmgr:
|
|
if _manage_uefi(device,
|
|
efi_system_part_uuid=efi_system_part_uuid):
|
|
return
|
|
|
|
# In case we can't use efibootmgr for uefi we will continue using grub2
|
|
LOG.debug('Using grub2-install to set up boot files')
|
|
_install_grub2(device,
|
|
root_uuid=root_uuid,
|
|
efi_system_part_uuid=efi_system_part_uuid,
|
|
prep_boot_part_uuid=prep_boot_part_uuid,
|
|
target_boot_mode=target_boot_mode)
|