def go(ui, args, answerfile_address, answerfile_script):
extra_repo_defs = []
results = {
'keymap': None,
'serial-console': None,
'operation': init_constants.OPERATION_INSTALL,
'boot-serial': False,
'extra-repos': [],
'network-backend': constants.NETWORK_BACKEND_DEFAULT,
'root-password': ('pwdhash', '!!'),
'create-new-partitions':
True, # FALSE = DOS | TRUE = GPT set via command line only with --disable-gpt
'new-partition-layout':
False, # TRUE = GPT with LOG,BACKUP,ROOT,BOOT,SWAP,SR automatically set during install/upgrade
'services': {s: None
for s in constants.SERVICES
}, # default state for services, example {'sshd': None}
}
suppress_extra_cd_dialog = False
serial_console = None
boot_console = None
boot_serial = False
if not xen_control_domain() or '--virtual' in args:
hardware.useVMHardwareFunctions()
for (opt, val) in args.items():
if opt == "--boot-console":
# takes precedence over --console
if hardware.is_serialConsole(val):
boot_console = hardware.getSerialConfig()
elif opt == "--console":
for console in val:
if hardware.is_serialConsole(console):
serial_console = hardware.getSerialConfig()
if hardware.is_serialConsole(val[-1]):
boot_serial = True
elif opt == "--keymap":
results["keymap"] = val
logger.log("Keymap specified on command-line: %s" % val)
elif opt == "--extrarepo":
extra_repo_defs += val
elif opt == "--onecd":
suppress_extra_cd_dialog = True
elif opt == "--disable-gpt":
constants.GPT_SUPPORT = False
results["create-new-partitions"] = False
logger.log(
"Forcing DOS partition table and old partition layout via command-line"
)
elif opt == "--legacy-partitions":
results["create-new-partitions"] = False
logger.log("Forcing old partition layout via command-line")
elif opt == "--cc-preparations":
constants.CC_PREPARATIONS = True
results['network-backend'] = constants.NETWORK_BACKEND_BRIDGE
if boot_console and not serial_console:
serial_console = boot_console
boot_serial = True
if serial_console:
try:
results['serial-console'] = hardware.SerialPort.from_string(
serial_console)
results['boot-serial'] = boot_serial
logger.log(
"Serial console specified on command-line: %s, default boot: %s"
% (serial_console, boot_serial))
except:
pass
interactive = True
try:
if os.path.isfile(constants.defaults_data_file):
data_file = open(constants.defaults_data_file)
try:
defaults = json.load(data_file)
finally:
data_file.close()
results.update(defaults)
# loading an answerfile?
assert ui is not None or answerfile_address is not None or answerfile_script is not None
if answerfile_address and answerfile_script:
raise RuntimeError(
"Both answerfile and answerfile generator passed on command line."
)
a = None
parsing_except = None
if answerfile_address:
a = answerfile.Answerfile.fetch(answerfile_address)
elif answerfile_script:
a = answerfile.Answerfile.generate(answerfile_script)
if a:
interactive = False
results['network-hardware'] = netutil.scanConfiguration()
try:
results.update(a.parseScripts())
results.update(a.processAnswerfileSetup())
if ui and results.get('ui-confirmation-prompt', False):
if not ui.init.confirm_proceed():
logger.log("User did not confirm installation. Reboot")
return constants.EXIT_USER_CANCEL
if 'extra-repos' in results:
# load drivers now
for media, address in results['extra-repos']:
for r in repository.repositoriesFromDefinition(
media, address, drivers=True):
r.installPackages(lambda x: (), {'root': '/'})
if 'fcoe-interfaces' in results:
fcoeutil.start_fcoe(results['fcoe-interfaces'])
util.runCmd2(util.udevsettleCmd())
time.sleep(1)
diskutil.mpath_part_scan()
# ensure partitions/disks are not locked by LVM
lvm = disktools.LVMTool()
lvm.deactivateAll()
del lvm
diskutil.log_available_disks()
results.update(a.processAnswerfile())
results = fixMpathResults(results)
except Exception as e:
logger.logException(e)
parsing_except = e
results['extra-repos'] += extra_repo_defs
logger.log("Driver repos: %s" % str(results['extra-repos']))
scripts.run_scripts('installation-start')
if parsing_except:
raise parsing_except
# log the modules that we loaded:
logger.log("All needed modules should now be loaded. We have loaded:")
util.runCmd2(["lsmod"])
status = constants.EXIT_OK
# how much RAM do we have?
ram_found_mb = hardware.getHostTotalMemoryKB() / 1024
ram_warning = ram_found_mb < constants.MIN_SYSTEM_RAM_MB
vt_warning = not hardware.VTSupportEnabled()
# Generate the UI sequence and populate some default
# values in backend input. Note that not all these screens
# will be displayed as they have conditional to skip them at
# the start of each function. In future these conditionals will
# be moved into the sequence definition and evaluated by the
# UI dispatcher.
aborted = False
if ui and interactive:
uiexit = ui.installer.runMainSequence(results, ram_warning,
vt_warning,
suppress_extra_cd_dialog)
if uiexit == uicontroller.EXIT:
aborted = True
if not aborted:
if results['install-type'] == constants.INSTALL_TYPE_RESTORE:
logger.log('INPUT ANSWER DICTIONARY')
backend.prettyLogAnswers(results)
logger.log("SCRIPTS DICTIONARY:")
backend.prettyLogAnswers(scripts.script_dict)
logger.log("Starting actual restore")
backup = results['backup-to-restore']
if ui:
pd = tui.progress.initProgressDialog(
"Restoring %s" % backup,
"Restoring data - this may take a while...", 100)
def progress(x):
if ui and pd:
tui.progress.displayProgressDialog(x, pd)
restore.restoreFromBackup(backup, progress)
if ui:
tui.progress.clearModelessDialog()
tui.progress.OKDialog(
"Restore",
"The restore operation completed successfully.")
else:
logger.log("Starting actual installation")
backend.performInstallation(results, ui, interactive)
if ui and interactive:
ui.installer.screens.installation_complete()
logger.log("The installation completed successfully.")
else:
logger.log(
"The user aborted the installation from within the user interface."
)
status = constants.EXIT_USER_CANCEL
except Exception as e:
try:
# first thing to do is to get the traceback and log it:
ex = sys.exc_info()
err = str.join("", traceback.format_exception(*ex))
logger.log("INSTALL FAILED.")
logger.log("A fatal exception occurred:")
logger.log(err)
# run the user's scripts - an arg of "1" indicates failure
scripts.run_scripts('installation-complete', '1')
# collect logs where possible
xelogging.collectLogs("/tmp")
# now display a friendly error dialog:
if ui:
ui.exn_error_dialog("install-log", True, interactive)
else:
txt = constants.error_string(str(e), 'install-log', True)
logger.log(txt)
# and now on the disk if possible:
if 'primary-disk' in results and 'primary-partnum' in results and 'logs-partnum' in results:
backend.writeLog(results['primary-disk'],
results['primary-partnum'],
results['logs-partnum'])
elif 'primary-disk' in results and 'primary-partnum' in results:
backend.writeLog(results['primary-disk'],
results['primary-partnum'], None)
logger.log(results)
except Exception as e:
# Don't let logging exceptions prevent subsequent actions
print 'Logging failed: ' + str(e)
# exit with failure status:
status = constants.EXIT_ERROR
else:
# run the user's scripts - an arg of "0" indicates success
try:
scripts.run_scripts('installation-complete', '0')
except:
pass
# put the log in /tmp:
xelogging.collectLogs('/tmp')
# and now on the disk if possible:
if 'primary-disk' in results and 'primary-partnum' in results and 'logs-partnum' in results:
backend.writeLog(results['primary-disk'],
results['primary-partnum'],
results['logs-partnum'])
elif 'primary-disk' in results and 'primary-partnum' in results:
backend.writeLog(results['primary-disk'],
results['primary-partnum'], None)
assert (status == constants.EXIT_OK
or status == constants.EXIT_USER_CANCEL)
return status
scripts.run_scripts('installation-complete', '1')
# collect logs where possible
xelogging.collectLogs("/tmp")
# now display a friendly error dialog:
if ui:
ui.exn_error_dialog("install-log", True, interactive)
else:
txt = constants.error_string(str(e), 'install-log', True)
xelogging.log(txt)
# and now on the disk if possible:
if 'primary-disk' in results and 'primary-partnum' in results and 'logs-partnum' in results:
backend.writeLog(results['primary-disk'],
results['primary-partnum'],
results['logs-partnum'])
elif 'primary-disk' in results and 'primary-partnum' in results:
backend.writeLog(results['primary-disk'],
results['primary-partnum'], None)
xelogging.log(results)
except Exception, e:
# Don't let logging exceptions prevent subsequent actions
print 'Logging failed: ' + str(e)
# exit with failure status:
status = constants.EXIT_ERROR
else:
# run the user's scripts - an arg of "0" indicates success
def go(ui, args, answerfile_address, answerfile_script):
extra_repo_defs = []
results = {
'keymap': None,
'serial-console': None,
'operation': init_constants.OPERATION_INSTALL,
'boot-serial': False,
'extra-repos': [],
'network-backend': constants.NETWORK_BACKEND_DEFAULT,
}
suppress_extra_cd_dialog = False
serial_console = None
boot_console = None
boot_serial = False
if not xen_control_domain() or args.has_key('--virtual'):
hardware.useVMHardwareFunctions()
for (opt, val) in args.items():
if opt == "--boot-console":
# takes precedence over --console
if hardware.is_serialConsole(val):
boot_console = hardware.getSerialConfig()
elif opt == "--console":
for console in val:
if hardware.is_serialConsole(console):
serial_console = hardware.getSerialConfig()
if hardware.is_serialConsole(val[-1]):
boot_serial = True
elif opt == "--keymap":
results["keymap"] = val
xelogging.log("Keymap specified on command-line: %s" % val)
elif opt == "--extrarepo":
extra_repo_defs += val
elif opt == "--onecd":
suppress_extra_cd_dialog = True
elif opt == "--disable-gpt":
constants.GPT_SUPPORT = False
if boot_console and not serial_console:
serial_console = boot_console
boot_serial = True
if serial_console:
try:
results['serial-console'] = hardware.SerialPort.from_string(serial_console)
results['boot-serial'] = boot_serial
xelogging.log("Serial console specified on command-line: %s, default boot: %s" %
(serial_console, boot_serial))
except:
pass
interactive = True
try:
# loading an answerfile?
assert ui != None or answerfile_address != None or answerfile_script != None
if answerfile_address and answerfile_script:
raise RuntimeError, "Both answerfile and answerfile generator passed on command line."
a = None
if answerfile_address:
a = answerfile.Answerfile(answerfile_address)
elif answerfile_script:
a = answerfile.Answerfile.generate(answerfile_script)
if a:
interactive = False
results['network-hardware'] = netutil.scanConfiguration()
results.update(a.parseScripts())
results.update(a.processAnswerfile())
if results.has_key('extra-repos'):
# load drivers now
for d in results['extra-repos']:
media, address, _ = d
for r in repository.repositoriesFromDefinition(media, address):
for p in r:
if p.type.startswith('driver'):
if p.load() != 0:
raise RuntimeError, "Failed to load driver %s." % p.name
results['extra-repos'] += extra_repo_defs
xelogging.log("Driver repos: %s" % str(results['extra-repos']))
scripts.run_scripts('installation-start')
# log the modules that we loaded:
xelogging.log("All needed modules should now be loaded. We have loaded:")
util.runCmd2(["/bin/lsmod"])
status = constants.EXIT_OK
# debug: print out what disks have been discovered
diskutil.log_available_disks()
# how much RAM do we have?
ram_found_mb = hardware.getHostTotalMemoryKB() / 1024
ram_warning = ram_found_mb < constants.MIN_SYSTEM_RAM_MB
vt_warning = not hardware.VTSupportEnabled()
# Generate the UI sequence and populate some default
# values in backend input. Note that not all these screens
# will be displayed as they have conditional to skip them at
# the start of each function. In future these conditionals will
# be moved into the sequence definition and evaluated by the
# UI dispatcher.
aborted = False
if ui and interactive:
uiexit = ui.installer.runMainSequence(
results, ram_warning, vt_warning, suppress_extra_cd_dialog
)
if uiexit == uicontroller.EXIT:
aborted = True
if not aborted:
if results['install-type'] == constants.INSTALL_TYPE_RESTORE:
xelogging.log("Starting actual restore")
backup = results['backup-to-restore']
if ui:
pd = tui.progress.initProgressDialog("Restoring",
"Restoring data - this may take a while...",
100)
def progress(x):
if ui and pd:
tui.progress.displayProgressDialog(x, pd)
restore.restoreFromBackup(backup.partition, backup.root_disk, progress)
if pd:
tui.progress.clearModelessDialog()
tui.progress.OKDialog("Restore", "The restore operation completed successfully.")
else:
xelogging.log("Starting actual installation")
results = backend.performInstallation(results, ui, interactive)
if ui and interactive:
ui.installer.screens.installation_complete()
xelogging.log("The installation completed successfully.")
else:
xelogging.log("The user aborted the installation from within the user interface.")
status = constants.EXIT_USER_CANCEL
except Exception, e:
try:
# first thing to do is to get the traceback and log it:
ex = sys.exc_info()
err = str.join("", traceback.format_exception(*ex))
xelogging.log("INSTALL FAILED.")
xelogging.log("A fatal exception occurred:")
xelogging.log(err)
# run the user's scripts - an arg of "1" indicates failure
scripts.run_scripts('installation-complete', '1')
# collect logs where possible
xelogging.collectLogs("/tmp")
# now display a friendly error dialog:
if ui:
ui.exn_error_dialog("install-log", True, interactive)
else:
txt = constants.error_string(str(e), 'install-log', True)
xelogging.log(txt)
# and now on the disk if possible:
if 'primary-disk' in results and 'primary-partnum' in results:
backend.writeLog(results['primary-disk'], results['primary-partnum'])
xelogging.log(results)
except Exception, e:
# Don't let logging exceptions prevent subsequent actions
print 'Logging failed: '+str(e)
backend.writeLog(results['primary-disk'], results['primary-partnum'])
xelogging.log(results)
except Exception, e:
# Don't let logging exceptions prevent subsequent actions
print 'Logging failed: '+str(e)
# exit with failure status:
status = constants.EXIT_ERROR
else:
# run the user's scripts - an arg of "0" indicates success
try:
scripts.run_scripts('installation-complete', '0')
except:
pass
# put the log in /tmp:
xelogging.collectLogs('/tmp')
# and now on the disk if possible:
if 'primary-disk' in results and 'primary-partnum' in results:
backend.writeLog(results['primary-disk'], results['primary-partnum'])
assert (status == constants.EXIT_OK or status == constants.EXIT_USER_CANCEL)
return status
if __name__ == "__main__":
sys.exit(main(util.splitArgs(sys.argv[1:], array_args = ('--extrarepo'))))
def doRestore(backup, progress, backup_partition_layout, has_logs_partition):
backup_partition = backup.partition
backup_version = backup.version
disk = backup.root_disk
tool = PartitionTool(disk)
_, boot_partnum, primary_partnum, backup_partnum, logs_partnum, swap_partnum, _ = backend.inspectTargetDisk(
disk, None, [], constants.PRESERVE_IF_UTILITY, True, True)
limit_version = product.THIS_PLATFORM_VERSION
logs_partition = tool.getPartition(logs_partnum)
boot_partition = tool.getPartition(boot_partnum)
assert backup_partition.startswith('/dev/')
assert disk.startswith('/dev/')
label = None
bootlabel = None
if has_logs_partition and not backup_partition_layout: # From 7.x (new layout) to 6.x
restore_partition = partitionDevice(disk, logs_partnum)
else:
restore_partition = partitionDevice(disk, primary_partnum)
xelogging.log("Restoring to partition %s." % restore_partition)
tool = PartitionTool(disk)
boot_part = tool.getPartition(boot_partnum)
boot_device = partitionDevice(disk, boot_partnum) if boot_part else None
efi_boot = boot_part and boot_part['id'] == GPTPartitionTool.ID_EFI_BOOT
# determine current location of bootloader
current_location = 'unknown'
try:
root_fs = util.TempMount(restore_partition,
'root-',
options=['ro'],
boot_device=boot_device)
try:
boot_config = bootloader.Bootloader.loadExisting(
root_fs.mount_point)
current_location = boot_config.location
xelogging.log("Bootloader currently in %s" % current_location)
finally:
root_fs.unmount()
except:
pass
# mount the backup fs
backup_fs = util.TempMount(backup_partition,
'restore-backup-',
options=['ro'])
try:
# extract the bootloader config
boot_config = bootloader.Bootloader.loadExisting(backup_fs.mount_point)
if boot_config.src_fmt == 'grub':
raise RuntimeError, "Backup uses grub bootloader which is no longer supported - " + \
"to restore please use a version of the installer that matches the backup partition"
# format the restore partition(s):
if util.runCmd2(['mkfs.%s' % constants.rootfs_type, restore_partition
]) != 0:
raise RuntimeError, "Failed to create root filesystem"
if efi_boot:
if util.runCmd2(['mkfs.vfat', boot_device]) != 0:
raise RuntimeError, "Failed to create boot filesystem"
# mount restore partition:
dest_fs = util.TempMount(restore_partition, 'restore-dest-')
try:
# copy files from the backup partition to the restore partition:
objs = filter(
lambda x: x not in
['lost+found', '.xen-backup-partition', '.xen-gpt.bin'],
os.listdir(backup_fs.mount_point))
for i in range(len(objs)):
obj = objs[i]
xelogging.log("Restoring subtree %s..." % obj)
progress((i * 100) / len(objs))
# Use 'cp' here because Python's copying tools are useless and
# get stuck in an infinite loop when copying e.g. /dev/null.
if util.runCmd2([
'cp', '-a',
os.path.join(backup_fs.mount_point, obj),
dest_fs.mount_point
]) != 0:
raise RuntimeError, "Failed to restore %s directory" % obj
xelogging.log(
"Data restoration complete. About to re-install bootloader.")
location = boot_config.location
m = re.search(r'root=LABEL=(\S+)',
boot_config.menu[boot_config.default].kernel_args)
if m:
label = m.group(1)
if location == constants.BOOT_LOCATION_PARTITION and current_location == constants.BOOT_LOCATION_MBR:
# if bootloader in the MBR it's probably not safe to restore with it
# on the partition
xelogging.log(
"Bootloader is currently installed to MBR, restoring to MBR instead of partition"
)
location = constants.BOOT_LOCATION_MBR
with open(os.path.join(backup_fs.mount_point, 'etc', 'fstab'),
'r') as fstab:
for line in fstab:
m = re.match(r'LABEL=(\S+)\s+/boot/efi\s', line)
if m:
bootlabel = m.group(1)
mounts = {
'root': dest_fs.mount_point,
'boot': os.path.join(dest_fs.mount_point, 'boot')
}
# prepare extra mounts for installing bootloader:
util.bindMount("/dev", "%s/dev" % dest_fs.mount_point)
util.bindMount("/sys", "%s/sys" % dest_fs.mount_point)
util.bindMount("/proc", "%s/proc" % dest_fs.mount_point)
if boot_config.src_fmt == 'grub2':
if efi_boot:
branding = util.readKeyValueFile(
os.path.join(backup_fs.mount_point,
constants.INVENTORY_FILE))
branding['product-brand'] = branding['PRODUCT_BRAND']
backend.setEfiBootEntry(mounts, disk, boot_partnum,
branding)
else:
if location == constants.BOOT_LOCATION_MBR:
backend.installGrub2(mounts, disk, False)
else:
backend.installGrub2(mounts, restore_partition, True)
else:
backend.installExtLinux(mounts, disk,
probePartitioningScheme(disk),
location)
# restore bootloader configuration
dst_file = boot_config.src_file.replace(backup_fs.mount_point,
dest_fs.mount_point, 1)
util.assertDir(os.path.dirname(dst_file))
boot_config.commit(dst_file)
finally:
util.umount("%s/proc" % dest_fs.mount_point)
util.umount("%s/sys" % dest_fs.mount_point)
util.umount("%s/dev" % dest_fs.mount_point)
dest_fs.unmount()
finally:
backup_fs.unmount()
if not label:
raise RuntimeError, "Failed to find label required for root filesystem."
if efi_boot and not bootlabel:
raise RuntimeError(
"Failed to find label required for boot filesystem.")
if util.runCmd2(['e2label', restore_partition, label]) != 0:
raise RuntimeError, "Failed to label root partition"
if bootlabel:
if util.runCmd2(['fatlabel', boot_device, bootlabel]) != 0:
raise RuntimeError, "Failed to label boot partition"
if has_logs_partition:
if not backup_partition_layout: # From 7.x (new layout) to 6.x
# Delete backup, dom0, Boot and swap partitions
tool.deletePartition(backup_partnum)
tool.deletePartition(primary_partnum)
tool.deletePartition(boot_partnum)
tool.deletePartition(swap_partnum)
# Rename logs partition to be n.1
tool.renamePartition(srcNumber=logs_partnum,
destNumber=primary_partnum,
overwrite=False)
# Create 4GB backup partition
tool.createPartition(
tool.ID_LINUX,
sizeBytes=constants.backup_size_old * 2**20,
startBytes=tool.partitionEnd(primary_partnum) +
tool.sectorSize,
number=backup_partnum)
# Commit partition table and mark dom0 disk as bootable
tool.commit(log=True)
tool.commitActivePartitiontoDisk(primary_partnum)
xelogging.log("Bootloader restoration complete.")
xelogging.log("Restore successful.")
backend.writeLog(disk, primary_partnum, logs_partnum)
elif 'LOG' in backup_partition_layout: # From 7.x (new layout) to 7.x (new layout)
tool.commitActivePartitiontoDisk(boot_partnum)
rdm_label = label.split("-")[1]
logs_part = partitionDevice(disk, logs_partnum)
swap_part = partitionDevice(disk, swap_partnum)
if util.runCmd2([
'e2label', logs_part, constants.logsfs_label % rdm_label
]) != 0:
raise RuntimeError, "Failed to label logs partition"
if util.runCmd2([
'swaplabel', '-L', constants.swap_label % rdm_label,
swap_part
]) != 0:
raise RuntimeError, "Failed to label swap partition"
def restoreWithoutRepartButUEFI(backup, progress):
backup_partition = backup.partition
disk = backup.root_disk
assert backup_partition.startswith('/dev/')
assert disk.startswith('/dev/')
# Restore the partition layout
backup_fs = util.TempMount(backup_partition,
'restore-backup-',
options=['ro'])
gpt_bin = None
try:
src_bin = os.path.join(backup_fs.mount_point, '.xen-gpt.bin')
if os.path.exists(src_bin):
gpt_bin = tempfile.mktemp()
shutil.copyfile(src_bin, gpt_bin)
finally:
backup_fs.unmount()
if gpt_bin:
xelogging.log("Restoring partition layout")
rc, err = util.runCmd2(["sgdisk", "-l", gpt_bin, disk],
with_stderr=True)
if rc != 0:
raise RuntimeError, "Failed to restore partition layout: %s" % err
label = None
bootlabel = None
_, boot_partnum, primary_partnum, backup_partnum, logs_partnum, swap_partnum, _ = backend.inspectTargetDisk(
disk, None, [], constants.PRESERVE_IF_UTILITY, True, True)
restore_partition = partitionDevice(disk, primary_partnum)
xelogging.log("Restoring to partition %s." % restore_partition)
tool = PartitionTool(disk)
boot_part = tool.getPartition(boot_partnum)
boot_device = partitionDevice(disk, boot_partnum) if boot_part else None
efi_boot = boot_part and boot_part['id'] == GPTPartitionTool.ID_EFI_BOOT
# determine current location of bootloader
current_location = 'unknown'
try:
root_fs = util.TempMount(restore_partition,
'root-',
options=['ro'],
boot_device=boot_device)
try:
boot_config = bootloader.Bootloader.loadExisting(
root_fs.mount_point)
current_location = boot_config.location
xelogging.log("Bootloader currently in %s" % current_location)
finally:
root_fs.unmount()
except:
pass
# mount the backup fs
backup_fs = util.TempMount(backup_partition,
'restore-backup-',
options=['ro'])
try:
# extract the bootloader config
boot_config = bootloader.Bootloader.loadExisting(backup_fs.mount_point)
if boot_config.src_fmt == 'grub':
raise RuntimeError, "Backup uses grub bootloader which is no longer supported - " + \
"to restore please use a version of the installer that matches the backup partition"
# format the restore partition(s):
if util.runCmd2(['mkfs.%s' % constants.rootfs_type, restore_partition
]) != 0:
raise RuntimeError, "Failed to create root filesystem"
if efi_boot:
if util.runCmd2(['mkfs.vfat', boot_device]) != 0:
raise RuntimeError, "Failed to create boot filesystem"
# mount restore partition:
dest_fs = util.TempMount(restore_partition,
'restore-dest-',
boot_device=boot_device,
boot_mount_point='/boot/efi')
try:
# copy files from the backup partition to the restore partition:
objs = filter(
lambda x: x not in
['lost+found', '.xen-backup-partition', '.xen-gpt.bin'],
os.listdir(backup_fs.mount_point))
for i in range(len(objs)):
obj = objs[i]
xelogging.log("Restoring subtree %s..." % obj)
progress((i * 100) / len(objs))
# Use 'cp' here because Python's copying tools are useless and
# get stuck in an infinite loop when copying e.g. /dev/null.
if util.runCmd2([
'cp', '-a',
os.path.join(backup_fs.mount_point, obj),
dest_fs.mount_point
]) != 0:
raise RuntimeError, "Failed to restore %s directory" % obj
xelogging.log(
"Data restoration complete. About to re-install bootloader.")
location = boot_config.location
m = re.search(r'root=LABEL=(\S+)',
boot_config.menu[boot_config.default].kernel_args)
if m:
label = m.group(1)
if location == constants.BOOT_LOCATION_PARTITION and current_location == constants.BOOT_LOCATION_MBR:
# if bootloader in the MBR it's probably not safe to restore with it
# on the partition
xelogging.log(
"Bootloader is currently installed to MBR, restoring to MBR instead of partition"
)
location = constants.BOOT_LOCATION_MBR
with open(os.path.join(backup_fs.mount_point, 'etc', 'fstab'),
'r') as fstab:
for line in fstab:
m = re.match(r'LABEL=(\S+)\s+/boot/efi\s', line)
if m:
bootlabel = m.group(1)
mounts = {
'root': dest_fs.mount_point,
'boot': os.path.join(dest_fs.mount_point, 'boot')
}
# prepare extra mounts for installing bootloader:
util.bindMount("/dev", "%s/dev" % dest_fs.mount_point)
util.bindMount("/sys", "%s/sys" % dest_fs.mount_point)
util.bindMount("/proc", "%s/proc" % dest_fs.mount_point)
if boot_config.src_fmt == 'grub2':
if efi_boot:
branding = util.readKeyValueFile(
os.path.join(backup_fs.mount_point,
constants.INVENTORY_FILE))
branding['product-brand'] = branding['PRODUCT_BRAND']
backend.setEfiBootEntry(mounts, disk, boot_partnum,
branding)
else:
if location == constants.BOOT_LOCATION_MBR:
backend.installGrub2(mounts, disk, False)
else:
backend.installGrub2(mounts, restore_partition, True)
else:
backend.installExtLinux(mounts, disk,
probePartitioningScheme(disk),
location)
# restore bootloader configuration
dst_file = boot_config.src_file.replace(backup_fs.mount_point,
dest_fs.mount_point, 1)
util.assertDir(os.path.dirname(dst_file))
boot_config.commit(dst_file)
finally:
util.umount("%s/proc" % dest_fs.mount_point)
util.umount("%s/sys" % dest_fs.mount_point)
util.umount("%s/dev" % dest_fs.mount_point)
dest_fs.unmount()
finally:
backup_fs.unmount()
if not label:
raise RuntimeError, "Failed to find label required for root filesystem."
if efi_boot and not bootlabel:
raise RuntimeError(
"Failed to find label required for boot filesystem.")
if util.runCmd2(['e2label', restore_partition, label]) != 0:
raise RuntimeError, "Failed to label root partition"
if bootlabel:
if util.runCmd2(['fatlabel', boot_device, bootlabel]) != 0:
raise RuntimeError, "Failed to label boot partition"
xelogging.log("Bootloader restoration complete.")
xelogging.log("Restore successful.")
backend.writeLog(disk, primary_partnum, logs_partnum)
