801 lines
23 KiB
Python
801 lines
23 KiB
Python
from __future__ import annotations
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import json
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import os
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import logging
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import time
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import uuid
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from pathlib import Path
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from typing import List, Dict, Any, Optional, TYPE_CHECKING, Literal, Iterable
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from parted import ( # type: ignore
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Disk, Geometry, FileSystem,
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PartitionException, DiskException,
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getDevice, getAllDevices, newDisk, freshDisk, Partition, Device
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)
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from .device_model import (
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DeviceModification, PartitionModification,
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BDevice, _DeviceInfo, _PartitionInfo,
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FilesystemType, Unit, PartitionTable,
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ModificationStatus, get_lsblk_info, find_lsblk_info, LsblkInfo,
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_BtrfsSubvolumeInfo, get_all_lsblk_info, DiskEncryption, LvmVolumeGroup, LvmVolume, Size, LvmGroupInfo,
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SectorSize, LvmVolumeInfo, LvmPVInfo, SubvolumeModification, BtrfsMountOption
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)
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from ..exceptions import DiskError, UnknownFilesystemFormat
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from ..general import SysCommand, SysCallError, JSON, SysCommandWorker
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from ..luks import Luks2
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from ..output import debug, error, info, warn, log
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from ..utils.util import is_subpath
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if TYPE_CHECKING:
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_: Any
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class DeviceHandler(object):
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_TMP_BTRFS_MOUNT = Path('/mnt/arch_btrfs')
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def __init__(self) -> None:
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self._devices: Dict[Path, BDevice] = {}
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self.load_devices()
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@property
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def devices(self) -> List[BDevice]:
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return list(self._devices.values())
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def load_devices(self) -> None:
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block_devices = {}
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SysCommand('udevadm settle')
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all_lsblk_info = get_all_lsblk_info()
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devices = getAllDevices()
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try:
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loop_devices = SysCommand(['losetup', '-a'])
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for ld_info in str(loop_devices).splitlines():
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loop_device = getDevice(ld_info.split(':', maxsplit=1)[0])
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devices.append(loop_device)
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except Exception as err:
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debug(f'Failed to get loop devices: {err}')
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for device in devices:
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dev_lsblk_info = find_lsblk_info(device.path, all_lsblk_info)
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if not dev_lsblk_info:
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debug(f'Device lsblk info not found: {device.path}')
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continue
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if dev_lsblk_info.type == 'rom':
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continue
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try:
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if dev_lsblk_info.pttype:
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disk = newDisk(device)
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else:
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disk = freshDisk(device, PartitionTable.GPT.value)
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except DiskException as err:
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debug(f'Unable to get disk from {device.path}: {err}')
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continue
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device_info = _DeviceInfo.from_disk(disk)
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partition_infos = []
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for partition in disk.partitions:
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lsblk_info = find_lsblk_info(partition.path, dev_lsblk_info.children)
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if not lsblk_info:
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debug(f'Partition lsblk info not found: {partition.path}')
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continue
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fs_type = self._determine_fs_type(partition, lsblk_info)
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subvol_infos = []
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if fs_type == FilesystemType.Btrfs:
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subvol_infos = self.get_btrfs_info(partition.path, lsblk_info)
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partition_infos.append(
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_PartitionInfo.from_partition(
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partition,
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fs_type,
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lsblk_info.partn,
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lsblk_info.partuuid,
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lsblk_info.uuid,
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lsblk_info.mountpoints,
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subvol_infos
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)
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)
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block_device = BDevice(disk, device_info, partition_infos)
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block_devices[block_device.device_info.path] = block_device
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self._devices = block_devices
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def _determine_fs_type(
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self,
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partition: Partition,
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lsblk_info: Optional[LsblkInfo] = None
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) -> Optional[FilesystemType]:
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try:
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if partition.fileSystem:
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return FilesystemType(partition.fileSystem.type)
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elif lsblk_info is not None:
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return FilesystemType(lsblk_info.fstype) if lsblk_info.fstype else None
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return None
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except ValueError:
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debug(f'Could not determine the filesystem: {partition.fileSystem}')
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return None
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def get_device(self, path: Path) -> Optional[BDevice]:
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return self._devices.get(path, None)
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def get_device_by_partition_path(self, partition_path: Path) -> Optional[BDevice]:
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partition = self.find_partition(partition_path)
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if partition:
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device: Device = partition.disk.device
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return self.get_device(Path(device.path))
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return None
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def find_partition(self, path: Path) -> Optional[_PartitionInfo]:
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for device in self._devices.values():
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part = next(filter(lambda x: str(x.path) == str(path), device.partition_infos), None)
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if part is not None:
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return part
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return None
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def get_parent_device_path(self, dev_path: Path) -> Path:
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lsblk = get_lsblk_info(dev_path)
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return Path(f'/dev/{lsblk.pkname}')
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def get_unique_path_for_device(self, dev_path: Path) -> Optional[Path]:
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paths = Path('/dev/disk/by-id').glob('*')
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linked_targets = {p.resolve(): p for p in paths}
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linked_wwn_targets = {p: linked_targets[p] for p in linked_targets
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if p.name.startswith('wwn-') or p.name.startswith('nvme-eui.')}
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if dev_path in linked_wwn_targets:
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return linked_wwn_targets[dev_path]
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if dev_path in linked_targets:
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return linked_targets[dev_path]
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return None
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def get_uuid_for_path(self, path: Path) -> Optional[str]:
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partition = self.find_partition(path)
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return partition.partuuid if partition else None
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def get_btrfs_info(
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self,
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dev_path: Path,
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lsblk_info: Optional[LsblkInfo] = None
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) -> List[_BtrfsSubvolumeInfo]:
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if not lsblk_info:
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lsblk_info = get_lsblk_info(dev_path)
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subvol_infos: List[_BtrfsSubvolumeInfo] = []
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if not lsblk_info.mountpoint:
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self.mount(dev_path, self._TMP_BTRFS_MOUNT, create_target_mountpoint=True)
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mountpoint = self._TMP_BTRFS_MOUNT
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else:
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# when multiple subvolumes are mounted then the lsblk output may look like
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# "mountpoint": "/mnt/archinstall/.snapshots"
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# "mountpoints": ["/mnt/archinstall/.snapshots", "/mnt/archinstall/home", ..]
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# so we'll determine the minimum common path and assume that's the root
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path_strings = [str(m) for m in lsblk_info.mountpoints]
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common_prefix = os.path.commonprefix(path_strings)
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mountpoint = Path(common_prefix)
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try:
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result = SysCommand(f'btrfs subvolume list {mountpoint}').decode()
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except SysCallError as err:
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debug(f'Failed to read btrfs subvolume information: {err}')
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return subvol_infos
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try:
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# ID 256 gen 16 top level 5 path @
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for line in result.splitlines():
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# expected output format:
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# ID 257 gen 8 top level 5 path @home
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name = Path(line.split(' ')[-1])
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sub_vol_mountpoint = lsblk_info.btrfs_subvol_info.get(name, None)
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subvol_infos.append(_BtrfsSubvolumeInfo(name, sub_vol_mountpoint))
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except json.decoder.JSONDecodeError as err:
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error(f"Could not decode lsblk JSON: {result}")
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raise err
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if not lsblk_info.mountpoint:
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self.umount(dev_path)
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return subvol_infos
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def format(
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self,
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fs_type: FilesystemType,
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path: Path,
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additional_parted_options: List[str] = []
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) -> None:
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mkfs_type = fs_type.value
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options = []
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match fs_type:
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case FilesystemType.Btrfs | FilesystemType.F2fs | FilesystemType.Xfs:
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# Force overwrite
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options.append('-f')
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case FilesystemType.Ext2 | FilesystemType.Ext3 | FilesystemType.Ext4:
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# Force create
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options.append('-F')
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case FilesystemType.Fat16 | FilesystemType.Fat32:
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mkfs_type = 'fat'
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# Set FAT size
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options.extend(('-F', fs_type.value.removeprefix(mkfs_type)))
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case FilesystemType.Ntfs:
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# Skip zeroing and bad sector check
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options.append('--fast')
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case FilesystemType.Reiserfs:
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pass
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case _:
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raise UnknownFilesystemFormat(f'Filetype "{fs_type.value}" is not supported')
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cmd = [f'mkfs.{mkfs_type}', *options, *additional_parted_options, str(path)]
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debug('Formatting filesystem:', ' '.join(cmd))
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try:
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SysCommand(cmd)
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except SysCallError as err:
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msg = f'Could not format {path} with {fs_type.value}: {err.message}'
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error(msg)
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raise DiskError(msg) from err
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def encrypt(
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self,
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dev_path: Path,
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mapper_name: Optional[str],
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enc_password: str,
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lock_after_create: bool = True
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) -> Luks2:
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luks_handler = Luks2(
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dev_path,
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mapper_name=mapper_name,
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password=enc_password
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)
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key_file = luks_handler.encrypt()
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luks_handler.unlock(key_file=key_file)
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if not luks_handler.mapper_dev:
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raise DiskError('Failed to unlock luks device')
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if lock_after_create:
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debug(f'luks2 locking device: {dev_path}')
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luks_handler.lock()
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return luks_handler
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def format_encrypted(
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self,
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dev_path: Path,
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mapper_name: Optional[str],
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fs_type: FilesystemType,
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enc_conf: DiskEncryption
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) -> None:
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luks_handler = Luks2(
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dev_path,
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mapper_name=mapper_name,
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password=enc_conf.encryption_password
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)
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key_file = luks_handler.encrypt()
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luks_handler.unlock(key_file=key_file)
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if not luks_handler.mapper_dev:
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raise DiskError('Failed to unlock luks device')
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info(f'luks2 formatting mapper dev: {luks_handler.mapper_dev}')
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self.format(fs_type, luks_handler.mapper_dev)
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info(f'luks2 locking device: {dev_path}')
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luks_handler.lock()
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def _lvm_info(
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self,
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cmd: str,
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info_type: Literal['lv', 'vg', 'pvseg']
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) -> Optional[Any]:
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raw_info = SysCommand(cmd).decode().split('\n')
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# for whatever reason the output sometimes contains
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# "File descriptor X leaked leaked on vgs invocation
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data = '\n'.join([raw for raw in raw_info if 'File descriptor' not in raw])
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debug(f'LVM info: {data}')
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reports = json.loads(data)
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for report in reports['report']:
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if len(report[info_type]) != 1:
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raise ValueError(f'Report does not contain any entry')
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entry = report[info_type][0]
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match info_type:
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case 'pvseg':
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return LvmPVInfo(
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pv_name=Path(entry['pv_name']),
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lv_name=entry['lv_name'],
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vg_name=entry['vg_name'],
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)
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case 'lv':
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return LvmVolumeInfo(
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lv_name=entry['lv_name'],
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vg_name=entry['vg_name'],
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lv_size=Size(int(entry[f'lv_size'][:-1]), Unit.B, SectorSize.default())
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)
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case 'vg':
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return LvmGroupInfo(
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vg_uuid=entry['vg_uuid'],
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vg_size=Size(int(entry[f'vg_size'][:-1]), Unit.B, SectorSize.default())
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)
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return None
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def _lvm_info_with_retry(self, cmd: str, info_type: Literal['lv', 'vg', 'pvseg']) -> Optional[Any]:
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attempts = 3
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for attempt_nr in range(attempts):
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try:
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return self._lvm_info(cmd, info_type)
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except ValueError:
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time.sleep(attempt_nr + 1)
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raise ValueError(f'Failed to fetch {info_type} information')
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def lvm_vol_info(self, lv_name: str) -> Optional[LvmVolumeInfo]:
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cmd = (
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'lvs --reportformat json '
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'--unit B '
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f'-S lv_name={lv_name}'
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)
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return self._lvm_info_with_retry(cmd, 'lv')
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def lvm_group_info(self, vg_name: str) -> Optional[LvmGroupInfo]:
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cmd = (
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'vgs --reportformat json '
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'--unit B '
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'-o vg_name,vg_uuid,vg_size '
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f'-S vg_name={vg_name}'
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)
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return self._lvm_info_with_retry(cmd, 'vg')
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def lvm_pvseg_info(self, vg_name: str, lv_name: str) -> Optional[LvmPVInfo]:
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cmd = (
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'pvs '
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'--segments -o+lv_name,vg_name '
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f'-S vg_name={vg_name},lv_name={lv_name} '
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'--reportformat json '
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)
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return self._lvm_info_with_retry(cmd, 'pvseg')
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def lvm_vol_change(self, vol: LvmVolume, activate: bool) -> None:
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active_flag = 'y' if activate else 'n'
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cmd = f'lvchange -a {active_flag} {vol.safe_dev_path}'
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debug(f'lvchange volume: {cmd}')
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SysCommand(cmd)
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def lvm_export_vg(self, vg: LvmVolumeGroup) -> None:
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cmd = f'vgexport {vg.name}'
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debug(f'vgexport: {cmd}')
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SysCommand(cmd)
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def lvm_import_vg(self, vg: LvmVolumeGroup) -> None:
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cmd = f'vgimport {vg.name}'
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debug(f'vgimport: {cmd}')
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SysCommand(cmd)
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def lvm_vol_reduce(self, vol_path: Path, amount: Size) -> None:
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val = amount.format_size(Unit.B, include_unit=False)
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cmd = f'lvreduce -L -{val}B {vol_path}'
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debug(f'Reducing LVM volume size: {cmd}')
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SysCommand(cmd)
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def lvm_pv_create(self, pvs: Iterable[Path]) -> None:
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cmd = 'pvcreate ' + ' '.join([str(pv) for pv in pvs])
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debug(f'Creating LVM PVS: {cmd}')
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worker = SysCommandWorker(cmd)
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worker.poll()
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worker.write(b'y\n', line_ending=False)
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def lvm_vg_create(self, pvs: Iterable[Path], vg_name: str) -> None:
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pvs_str = ' '.join([str(pv) for pv in pvs])
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cmd = f'vgcreate --yes {vg_name} {pvs_str}'
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debug(f'Creating LVM group: {cmd}')
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worker = SysCommandWorker(cmd)
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worker.poll()
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worker.write(b'y\n', line_ending=False)
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def lvm_vol_create(self, vg_name: str, volume: LvmVolume, offset: Optional[Size] = None) -> None:
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if offset is not None:
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length = volume.length - offset
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else:
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length = volume.length
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length_str = length.format_size(Unit.B, include_unit=False)
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cmd = f'lvcreate --yes -L {length_str}B {vg_name} -n {volume.name}'
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debug(f'Creating volume: {cmd}')
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worker = SysCommandWorker(cmd)
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worker.poll()
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worker.write(b'y\n', line_ending=False)
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volume.vg_name = vg_name
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volume.dev_path = Path(f'/dev/{vg_name}/{volume.name}')
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def _setup_partition(
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self,
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part_mod: PartitionModification,
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block_device: BDevice,
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disk: Disk,
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requires_delete: bool
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) -> None:
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# when we require a delete and the partition to be (re)created
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# already exists then we have to delete it first
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if requires_delete and part_mod.status in [ModificationStatus.Modify, ModificationStatus.Delete]:
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info(f'Delete existing partition: {part_mod.safe_dev_path}')
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part_info = self.find_partition(part_mod.safe_dev_path)
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if not part_info:
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raise DiskError(f'No partition for dev path found: {part_mod.safe_dev_path}')
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disk.deletePartition(part_info.partition)
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if part_mod.status == ModificationStatus.Delete:
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return
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start_sector = part_mod.start.convert(
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Unit.sectors,
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block_device.device_info.sector_size
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)
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length_sector = part_mod.length.convert(
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Unit.sectors,
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block_device.device_info.sector_size
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)
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geometry = Geometry(
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device=block_device.disk.device,
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start=start_sector.value,
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length=length_sector.value
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)
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filesystem = FileSystem(type=part_mod.safe_fs_type.value, geometry=geometry)
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partition = Partition(
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disk=disk,
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type=part_mod.type.get_partition_code(),
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fs=filesystem,
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geometry=geometry
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)
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for flag in part_mod.flags:
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partition.setFlag(flag.value)
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debug(f'\tType: {part_mod.type.value}')
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debug(f'\tFilesystem: {part_mod.safe_fs_type.value}')
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debug(f'\tGeometry: {start_sector.value} start sector, {length_sector.value} length')
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try:
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disk.addPartition(partition=partition, constraint=disk.device.optimalAlignedConstraint)
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except PartitionException as ex:
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raise DiskError(f'Unable to add partition, most likely due to overlapping sectors: {ex}') from ex
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|
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if disk.type == PartitionTable.GPT.value and part_mod.is_root():
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linux_root_x86_64 = "4F68BCE3-E8CD-4DB1-96E7-FBCAF984B709"
|
|
partition.type_uuid = uuid.UUID(linux_root_x86_64).bytes
|
|
|
|
# the partition has a path now that it has been added
|
|
part_mod.dev_path = Path(partition.path)
|
|
|
|
def fetch_part_info(self, path: Path) -> LsblkInfo:
|
|
lsblk_info = get_lsblk_info(path)
|
|
|
|
if not lsblk_info.partn:
|
|
debug(f'Unable to determine new partition number: {path}\n{lsblk_info}')
|
|
raise DiskError(f'Unable to determine new partition number: {path}')
|
|
|
|
if not lsblk_info.partuuid:
|
|
debug(f'Unable to determine new partition uuid: {path}\n{lsblk_info}')
|
|
raise DiskError(f'Unable to determine new partition uuid: {path}')
|
|
|
|
if not lsblk_info.uuid:
|
|
debug(f'Unable to determine new uuid: {path}\n{lsblk_info}')
|
|
raise DiskError(f'Unable to determine new uuid: {path}')
|
|
|
|
debug(f'partition information found: {lsblk_info.json()}')
|
|
|
|
return lsblk_info
|
|
|
|
def create_lvm_btrfs_subvolumes(
|
|
self,
|
|
path: Path,
|
|
btrfs_subvols: List[SubvolumeModification],
|
|
mount_options: List[str]
|
|
) -> None:
|
|
info(f'Creating subvolumes: {path}')
|
|
|
|
self.mount(path, self._TMP_BTRFS_MOUNT, create_target_mountpoint=True)
|
|
|
|
for sub_vol in btrfs_subvols:
|
|
debug(f'Creating subvolume: {sub_vol.name}')
|
|
|
|
subvol_path = self._TMP_BTRFS_MOUNT / sub_vol.name
|
|
|
|
SysCommand(f"btrfs subvolume create {subvol_path}")
|
|
|
|
if BtrfsMountOption.nodatacow.value in mount_options:
|
|
try:
|
|
SysCommand(f'chattr +C {subvol_path}')
|
|
except SysCallError as err:
|
|
raise DiskError(f'Could not set nodatacow attribute at {subvol_path}: {err}')
|
|
|
|
if BtrfsMountOption.compress.value in mount_options:
|
|
try:
|
|
SysCommand(f'chattr +c {subvol_path}')
|
|
except SysCallError as err:
|
|
raise DiskError(f'Could not set compress attribute at {subvol_path}: {err}')
|
|
|
|
self.umount(path)
|
|
|
|
def create_btrfs_volumes(
|
|
self,
|
|
part_mod: PartitionModification,
|
|
enc_conf: Optional['DiskEncryption'] = None
|
|
) -> None:
|
|
info(f'Creating subvolumes: {part_mod.safe_dev_path}')
|
|
|
|
# unlock the partition first if it's encrypted
|
|
if enc_conf is not None and part_mod in enc_conf.partitions:
|
|
if not part_mod.mapper_name:
|
|
raise ValueError('No device path specified for modification')
|
|
|
|
luks_handler = self.unlock_luks2_dev(
|
|
part_mod.safe_dev_path,
|
|
part_mod.mapper_name,
|
|
enc_conf.encryption_password
|
|
)
|
|
|
|
if not luks_handler.mapper_dev:
|
|
raise DiskError('Failed to unlock luks device')
|
|
|
|
dev_path = luks_handler.mapper_dev
|
|
else:
|
|
luks_handler = None
|
|
dev_path = part_mod.safe_dev_path
|
|
|
|
self.mount(
|
|
dev_path,
|
|
self._TMP_BTRFS_MOUNT,
|
|
create_target_mountpoint=True,
|
|
options=part_mod.mount_options
|
|
)
|
|
|
|
for sub_vol in part_mod.btrfs_subvols:
|
|
debug(f'Creating subvolume: {sub_vol.name}')
|
|
|
|
subvol_path = self._TMP_BTRFS_MOUNT / sub_vol.name
|
|
|
|
SysCommand(f"btrfs subvolume create {subvol_path}")
|
|
|
|
self.umount(dev_path)
|
|
|
|
if luks_handler is not None and luks_handler.mapper_dev is not None:
|
|
luks_handler.lock()
|
|
|
|
def unlock_luks2_dev(self, dev_path: Path, mapper_name: str, enc_password: str) -> Luks2:
|
|
luks_handler = Luks2(dev_path, mapper_name=mapper_name, password=enc_password)
|
|
|
|
if not luks_handler.is_unlocked():
|
|
luks_handler.unlock()
|
|
|
|
if not luks_handler.is_unlocked():
|
|
raise DiskError(f'Failed to unlock luks2 device: {dev_path}')
|
|
|
|
return luks_handler
|
|
|
|
def umount_all_existing(self, device_path: Path) -> None:
|
|
debug(f'Unmounting all existing partitions: {device_path}')
|
|
|
|
existing_partitions = self._devices[device_path].partition_infos
|
|
|
|
for partition in existing_partitions:
|
|
debug(f'Unmounting: {partition.path}')
|
|
|
|
# un-mount for existing encrypted partitions
|
|
if partition.fs_type == FilesystemType.Crypto_luks:
|
|
Luks2(partition.path).lock()
|
|
else:
|
|
self.umount(partition.path, recursive=True)
|
|
|
|
def partition(
|
|
self,
|
|
modification: DeviceModification,
|
|
partition_table: Optional[PartitionTable] = None
|
|
) -> None:
|
|
"""
|
|
Create a partition table on the block device and create all partitions.
|
|
"""
|
|
if modification.wipe:
|
|
if partition_table is None:
|
|
raise ValueError('Modification is marked as wipe but no partitioning table was provided')
|
|
|
|
if partition_table.MBR and len(modification.partitions) > 3:
|
|
raise DiskError('Too many partitions on disk, MBR disks can only have 3 primary partitions')
|
|
|
|
# WARNING: the entire device will be wiped and all data lost
|
|
if modification.wipe:
|
|
self.wipe_dev(modification.device)
|
|
part_table = partition_table.value if partition_table else None
|
|
disk = freshDisk(modification.device.disk.device, part_table)
|
|
else:
|
|
info(f'Use existing device: {modification.device_path}')
|
|
disk = modification.device.disk
|
|
|
|
info(f'Creating partitions: {modification.device_path}')
|
|
|
|
# don't touch existing partitions
|
|
filtered_part = [p for p in modification.partitions if not p.exists()]
|
|
|
|
for part_mod in filtered_part:
|
|
# if the entire disk got nuked then we don't have to delete
|
|
# any existing partitions anymore because they're all gone already
|
|
requires_delete = modification.wipe is False
|
|
self._setup_partition(part_mod, modification.device, disk, requires_delete=requires_delete)
|
|
|
|
disk.commit()
|
|
|
|
def mount(
|
|
self,
|
|
dev_path: Path,
|
|
target_mountpoint: Path,
|
|
mount_fs: Optional[str] = None,
|
|
create_target_mountpoint: bool = True,
|
|
options: List[str] = []
|
|
) -> None:
|
|
if create_target_mountpoint and not target_mountpoint.exists():
|
|
target_mountpoint.mkdir(parents=True, exist_ok=True)
|
|
|
|
if not target_mountpoint.exists():
|
|
raise ValueError('Target mountpoint does not exist')
|
|
|
|
lsblk_info = get_lsblk_info(dev_path)
|
|
if target_mountpoint in lsblk_info.mountpoints:
|
|
info(f'Device already mounted at {target_mountpoint}')
|
|
return
|
|
|
|
cmd = ['mount']
|
|
|
|
if len(options):
|
|
cmd.extend(('-o', ','.join(options)))
|
|
if mount_fs:
|
|
cmd.extend(('-t', mount_fs))
|
|
|
|
cmd.extend((str(dev_path), str(target_mountpoint)))
|
|
|
|
command = ' '.join(cmd)
|
|
|
|
debug(f'Mounting {dev_path}: {command}')
|
|
|
|
try:
|
|
SysCommand(command)
|
|
except SysCallError as err:
|
|
raise DiskError(f'Could not mount {dev_path}: {command}\n{err.message}')
|
|
|
|
def umount(self, mountpoint: Path, recursive: bool = False) -> None:
|
|
lsblk_info = get_lsblk_info(mountpoint)
|
|
|
|
if not lsblk_info.mountpoints:
|
|
return
|
|
|
|
debug(f'Partition {mountpoint} is currently mounted at: {[str(m) for m in lsblk_info.mountpoints]}')
|
|
|
|
cmd = ['umount']
|
|
|
|
if recursive:
|
|
cmd.append('-R')
|
|
|
|
for path in lsblk_info.mountpoints:
|
|
debug(f'Unmounting mountpoint: {path}')
|
|
SysCommand(cmd + [str(path)])
|
|
|
|
def detect_pre_mounted_mods(self, base_mountpoint: Path) -> List[DeviceModification]:
|
|
part_mods: Dict[Path, List[PartitionModification]] = {}
|
|
|
|
for device in self.devices:
|
|
for part_info in device.partition_infos:
|
|
for mountpoint in part_info.mountpoints:
|
|
if is_subpath(mountpoint, base_mountpoint):
|
|
path = Path(part_info.disk.device.path)
|
|
part_mods.setdefault(path, [])
|
|
part_mod = PartitionModification.from_existing_partition(part_info)
|
|
if part_mod.mountpoint:
|
|
part_mod.mountpoint = mountpoint.root / mountpoint.relative_to(base_mountpoint)
|
|
else:
|
|
for subvol in part_mod.btrfs_subvols:
|
|
if sm := subvol.mountpoint:
|
|
subvol.mountpoint = sm.root / sm.relative_to(base_mountpoint)
|
|
part_mods[path].append(part_mod)
|
|
break
|
|
|
|
device_mods: List[DeviceModification] = []
|
|
for device_path, mods in part_mods.items():
|
|
device_mod = DeviceModification(self._devices[device_path], False, mods)
|
|
device_mods.append(device_mod)
|
|
|
|
return device_mods
|
|
|
|
def partprobe(self, path: Optional[Path] = None) -> None:
|
|
if path is not None:
|
|
command = f'partprobe {path}'
|
|
else:
|
|
command = 'partprobe'
|
|
|
|
try:
|
|
debug(f'Calling partprobe: {command}')
|
|
SysCommand(command)
|
|
except SysCallError as err:
|
|
if 'have been written, but we have been unable to inform the kernel of the change' in str(err):
|
|
log(f"Partprobe was not able to inform the kernel of the new disk state (ignoring error): {err}", fg="gray", level=logging.INFO)
|
|
else:
|
|
error(f'"{command}" failed to run (continuing anyway): {err}')
|
|
|
|
def _wipe(self, dev_path: Path) -> None:
|
|
"""
|
|
Wipe a device (partition or otherwise) of meta-data, be it file system, LVM, etc.
|
|
@param dev_path: Device path of the partition to be wiped.
|
|
@type dev_path: str
|
|
"""
|
|
with open(dev_path, 'wb') as p:
|
|
p.write(bytearray(1024))
|
|
|
|
def wipe_dev(self, block_device: BDevice) -> None:
|
|
"""
|
|
Wipe the block device of meta-data, be it file system, LVM, etc.
|
|
This is not intended to be secure, but rather to ensure that
|
|
auto-discovery tools don't recognize anything here.
|
|
"""
|
|
info(f'Wiping partitions and metadata: {block_device.device_info.path}')
|
|
for partition in block_device.partition_infos:
|
|
self._wipe(partition.path)
|
|
|
|
self._wipe(block_device.device_info.path)
|
|
|
|
|
|
device_handler = DeviceHandler()
|
|
|
|
|
|
def disk_layouts() -> str:
|
|
try:
|
|
lsblk_info = get_all_lsblk_info()
|
|
return json.dumps(lsblk_info, indent=4, sort_keys=True, cls=JSON)
|
|
except SysCallError as err:
|
|
warn(f"Could not return disk layouts: {err}")
|
|
return ''
|
|
except json.decoder.JSONDecodeError as err:
|
|
warn(f"Could not return disk layouts: {err}")
|
|
return ''
|