Source code for kiwi.storage.setup

# Copyright (c) 2015 SUSE Linux GmbH.  All rights reserved.
#
# This file is part of kiwi.
#
# kiwi is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# kiwi is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with kiwi.  If not, see <http://www.gnu.org/licenses/>
#
import os
import logging
from collections import namedtuple

# project
from kiwi.firmware import FirmWare
from kiwi.system.size import SystemSize
from kiwi.defaults import Defaults

log = logging.getLogger('kiwi')


[docs]class DiskSetup: """ **Implements disk setup methods** Methods from this class provides information required before building a disk image :param object xml_state: Instance of XMLState :param string root_dir: root directory path name """ def __init__(self, xml_state, root_dir): self.root_filesystem_is_overlay = xml_state.build_type.get_overlayroot() self.swap_mbytes = xml_state.get_oemconfig_swap_mbytes() self.configured_size = xml_state.get_build_type_size() self.disk_resize_requested = xml_state.get_oemconfig_oem_resize() self.filesystem = xml_state.build_type.get_filesystem() self.bootpart_requested = xml_state.build_type.get_bootpartition() self.bootpart_mbytes = xml_state.build_type.get_bootpartsize() self.spare_part_mbytes = xml_state.get_build_type_spare_part_size() self.mdraid = xml_state.build_type.get_mdraid() self.luks = xml_state.build_type.get_luks() self.volume_manager = xml_state.get_volume_management() self.bootloader = xml_state.get_build_type_bootloader_name() self.oemconfig = xml_state.get_build_type_oemconfig_section() self.volumes = xml_state.get_volumes() self.firmware = FirmWare( xml_state ) self.rootsize = SystemSize( root_dir ) self.root_dir = root_dir self.xml_state = xml_state
[docs] def get_disksize_mbytes(self): # noqa C901 """ Precalculate disk size requirements in mbytes :return: disk size mbytes :rtype: int """ log.info('Precalculating required disk size') calculated_disk_mbytes = 0 root_filesystem_mbytes = self.rootsize.customize( self.rootsize.accumulate_mbyte_file_sizes(), self.filesystem ) calculated_disk_mbytes += root_filesystem_mbytes log.info( '--> system data with filesystem overhead needs %s MB', root_filesystem_mbytes ) if self.volume_manager and self.volume_manager == 'lvm': lvm_overhead_mbytes = Defaults.get_lvm_overhead_mbytes() log.info( '--> LVM overhead adding %s MB', lvm_overhead_mbytes ) calculated_disk_mbytes += lvm_overhead_mbytes volume_mbytes = self._accumulate_volume_size( root_filesystem_mbytes ) if volume_mbytes: calculated_disk_mbytes += volume_mbytes log.info( '--> volume(s) size setup adding %s MB', volume_mbytes ) elif self.swap_mbytes: calculated_disk_mbytes += self.swap_mbytes log.info( '--> swap partition adding %s MB', self.swap_mbytes ) legacy_bios_mbytes = self.firmware.get_legacy_bios_partition_size() if legacy_bios_mbytes: calculated_disk_mbytes += legacy_bios_mbytes log.info( '--> legacy bios boot partition adding %s MB', legacy_bios_mbytes ) boot_mbytes = self.boot_partition_size() if boot_mbytes: calculated_disk_mbytes += boot_mbytes log.info( '--> boot partition adding %s MB', boot_mbytes ) if self.spare_part_mbytes: calculated_disk_mbytes += self.spare_part_mbytes log.info( '--> spare partition adding %s MB', self.spare_part_mbytes ) efi_mbytes = self.firmware.get_efi_partition_size() if efi_mbytes: calculated_disk_mbytes += efi_mbytes log.info( '--> EFI partition adding %s MB', efi_mbytes ) prep_mbytes = self.firmware.get_prep_partition_size() if prep_mbytes: calculated_disk_mbytes += prep_mbytes log.info( '--> PReP partition adding %s MB', prep_mbytes ) recovery_mbytes = self._inplace_recovery_partition_size() if recovery_mbytes: calculated_disk_mbytes += recovery_mbytes log.info( '--> In-place recovery partition adding: %s MB', recovery_mbytes ) if not self.configured_size: log.info( 'Using calculated disk size: %d MB', calculated_disk_mbytes ) return calculated_disk_mbytes elif self.configured_size.additive: result_disk_mbytes = \ self.configured_size.mbytes + calculated_disk_mbytes log.info( 'Using configured disk size: %d MB + %d MB calculated = %d MB', self.configured_size.mbytes, calculated_disk_mbytes, result_disk_mbytes ) return result_disk_mbytes else: log.info( 'Using configured disk size: %d MB', self.configured_size.mbytes ) if self.configured_size.mbytes < calculated_disk_mbytes: log.warning( '--> Configured size smaller than calculated size: %d MB', calculated_disk_mbytes ) return self.configured_size.mbytes
[docs] def need_boot_partition(self): """ Decide if an extra boot partition is needed. This is done with the bootpartition attribute from the type, however if it is not set it depends on some other type configuration parameters if we need a boot partition or not :return: True or False :rtype: bool """ if self.bootpart_requested is True: return True if self.bootpart_requested is False: return False if self.mdraid: return True if self.volume_manager == 'lvm': return True if self.volume_manager == 'btrfs': return False if self.filesystem == 'xfs': return True if self.root_filesystem_is_overlay: return True
[docs] def get_boot_label(self): """ Filesystem Label to use for the boot partition :return: label name :rtype: str """ return 'BOOT'
[docs] def get_root_label(self): """ Filesystem Label to use for the root partition If not specified in the XML configuration the default root label is set to 'ROOT' :return: label name :rtype: str """ root_label = self.xml_state.build_type.get_rootfs_label() if not root_label: root_label = 'ROOT' return root_label
[docs] def get_efi_label(self): """ Filesystem Label to use for the EFI partition :return: label name :rtype: str """ return 'EFI'
[docs] def boot_partition_size(self): """ Size of the boot partition in mbytes :return: boot size mbytes :rtype: int """ if self.need_boot_partition(): if self.bootpart_mbytes: return self.bootpart_mbytes else: return Defaults.get_default_boot_mbytes()
def _inplace_recovery_partition_size(self): """ In inplace recovery mode the recovery archive is created at install time. This requires free space on the disk. The amount of free space is specified with the oem-recovery-part-size attribute. If specified we add the given size to the disk. If not specified an inplace setup at install time will be moved to the first boot of an oem image when the recovery partition has been created """ if self.oemconfig and self.oemconfig.get_oem_inplace_recovery(): recovery_mbytes = self.oemconfig.get_oem_recovery_part_size() if recovery_mbytes: return int(recovery_mbytes[0] * 1.7) def _accumulate_volume_size(self, root_mbytes): """ Calculate number of mbytes to add to the disk to allow the creaton of the volumes with their configured size """ disk_volume_mbytes = 0 data_volume_mbytes = self._calculate_volume_mbytes() root_volume = self._get_root_volume_configuration() # If disk resize is requested we only add the default min # volume size because their target size request is handled # on first boot of the disk image in oemboot/repart if self.disk_resize_requested: for volume in self.volumes: disk_volume_mbytes += Defaults.get_min_volume_mbytes() return disk_volume_mbytes # For vmx types we need to add the configured volume # sizes because the image is used directly as it is without # being deployed and resized on a target disk for volume in self.volumes: if volume.realpath and not volume.realpath == '/' and volume.size: [size_type, req_size] = volume.size.split(':') disk_add_mbytes = 0 if size_type == 'freespace': disk_add_mbytes += int(req_size) else: disk_add_mbytes += int(req_size) - \ data_volume_mbytes.volume[volume.realpath] if disk_add_mbytes > 0: disk_volume_mbytes += disk_add_mbytes + \ Defaults.get_min_volume_mbytes() else: log.warning( 'volume size of %s MB for %s is too small, skipped', int(req_size), volume.realpath ) if root_volume: if root_volume.size_type == 'freespace': disk_add_mbytes = root_volume.req_size else: disk_add_mbytes = root_volume.req_size - \ root_mbytes + data_volume_mbytes.total if disk_add_mbytes > 0: disk_volume_mbytes += disk_add_mbytes + \ Defaults.get_min_volume_mbytes() else: log.warning( 'root volume size of %s MB is too small, skipped', root_volume.req_size ) return disk_volume_mbytes def _get_root_volume_configuration(self): """ Provide LVRoot volume configuration if present and in use according to the selected volume management. So far this only affects the LVM volume manager """ root_volume_type = namedtuple( 'root_volume_type', ['size_type', 'req_size'] ) for volume in self.volumes: if volume.name == 'LVRoot': if volume.size: [size_type, req_size] = volume.size.split(':') return root_volume_type( size_type=size_type, req_size=int(req_size) ) def _calculate_volume_mbytes(self): """ Calculate the number of mbytes each volume path currently consumes and also provide a total number of these values. """ volume_mbytes_type = namedtuple( 'volume_mbytes_type', ['volume', 'total'] ) volume_mbytes = {} volume_total = 0 for volume in self.volumes: if volume.realpath and not volume.realpath == '/': path_to_volume = self.root_dir + '/' + volume.realpath if os.path.exists(path_to_volume): volume_size = SystemSize(path_to_volume) volume_mbytes[volume.realpath] = volume_size.customize( volume_size.accumulate_mbyte_file_sizes(), self.filesystem ) else: volume_mbytes[volume.realpath] = 0 volume_total += volume_mbytes[volume.realpath] return volume_mbytes_type( volume=volume_mbytes, total=volume_total )