1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
# Copyright 2022 VyOS maintainers and contributors <maintainers@vyos.io>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library. If not, see <http://www.gnu.org/licenses/>.
from json import loads as json_loads
from os import sync
from psutil import disk_partitions
from vyos.util import run, cmd
def disk_cleanup(drive_path: str) -> None:
"""Clean up disk partition table (MBR and GPT)
Zeroize primary and secondary headers - first and last 17408 bytes
(512 bytes * 34 LBA) on a drive
Args:
drive_path (str): path to a drive that needs to be cleaned
"""
run(f'sgdisk -Z {drive_path}')
def find_persistence() -> str:
"""Find a mountpoint for persistence storage
Returns:
str: Path where 'persistance' pertition is mounted, Empty if not found
"""
mounted_partitions = disk_partitions()
for partition in mounted_partitions:
if partition.mountpoint.endswith('/persistence'):
return partition.mountpoint
return ''
def parttable_create(drive_path: str, root_size: int) -> None:
"""Create a hybrid MBR/GPT partition table
0-2047 first sectors are free
2048-4095 sectors - BIOS Boot Partition
4096 + 256 MB - EFI system partition
Everything else till the end of a drive - Linux partition
Args:
drive_path (str): path to a drive
"""
if not root_size:
root_size_text: str = '+100%'
else:
root_size_text: str = str(root_size)
command = f'sgdisk -a1 -n1:2048:4095 -t1:EF02 -n2:4096:+256M -t2:EF00 \
-n3:0:+{root_size_text}K -t3:8300 {drive_path}'
run(command)
# update partitons in kernel
sync()
run(f'partprobe {drive_path}')
def filesystem_create(partition: str, fstype: str) -> None:
"""Create a filesystem on a partition
Args:
partition (str): path to a partition (for example: '/dev/sda1')
fstype (str): filesystem type ('efi' or 'ext4')
"""
if fstype == 'efi':
command = 'mkfs -t fat -n EFI'
run(f'{command} {partition}')
if fstype == 'ext4':
command = 'mkfs -t ext4 -L persistence'
run(f'{command} {partition}')
def partition_mount(partition: str,
path: str,
fsype: str = '',
overlay_params: dict[str, str] = {}) -> None:
"""Mount a partition into a path
Args:
partition (str): path to a partition (for example: '/dev/sda1')
path (str): a path where to mount
fsype (str): optionally, set fstype ('squashfs', 'overlay', 'iso9660')
overlay_params (dict): optionally, set overlay parameters.
Defaults to None.
"""
if fsype in ['squashfs', 'iso9660']:
command: str = f'mount -o loop,ro -t {fsype} {partition} {path}'
if fsype == 'overlay' and overlay_params:
command: str = f'mount -t overlay -o noatime,\
upperdir={overlay_params["upperdir"]},\
lowerdir={overlay_params["lowerdir"]},\
workdir={overlay_params["workdir"]} overlay {path}'
else:
command = f'mount {partition} {path}'
run(command)
def partition_umount(partition: str = '', path: str = '') -> None:
"""Umount a partition by a partition name or a path
Args:
partition (str): path to a partition (for example: '/dev/sda1')
path (str): a path where a partition is mounted
"""
if partition:
command = f'umount {partition}'
run(command)
if path:
command = f'umount {path}'
run(command)
def find_device(mountpoint: str) -> str:
"""Find a device by mountpoint
Returns:
str: Path to device, Empty if not found
"""
mounted_partitions = disk_partitions()
for partition in mounted_partitions:
if partition.mountpoint == mountpoint:
return partition.mountpoint
return ''
def raid_create(raid_name: str,
raid_members: list[str],
raid_level: str = 'raid1') -> None:
"""Create a RAID array
Args:
raid_name (str): a name of array (data, backup, test, etc.)
raid_members (list[str]): a list of array members
raid_level (str, optional): an array level. Defaults to 'raid1'.
"""
raid_devices_num: int = len(raid_members)
raid_members_str: str = ' '.join(raid_members)
command: str = f'mdadm --create /dev/md/{raid_name} --metadata=1.2 \
--raid-devices={raid_devices_num} --level={raid_level} \
{raid_members_str}'
run(command)
def disks_size() -> dict[str, int]:
"""Get a dictionary with physical disks and their sizes
Returns:
dict[str, int]: a dictionary with name: size mapping
"""
disks_size: dict[str, int] = {}
lsblk: str = cmd('lsblk -Jbp')
blk_list = json_loads(lsblk)
for device in blk_list.get('blockdevices'):
if device['type'] == 'disk':
disks_size.update({device['name']: device['size']})
return disks_size
|
