1SYSTEMD-GPT-AUTO-GENERATOR(s8y)stemd-gpt-auto-generatSoYrSTEMD-GPT-AUTO-GENERATOR(8)
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NAME

6       systemd-gpt-auto-generator - Generator for automatically discovering
7       and mounting root, /home and /srv partitions, as well as discovering
8       and enabling swap partitions, based on GPT partition type GUIDs.
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SYNOPSIS

11       /usr/lib/systemd/system-generators/systemd-gpt-auto-generator
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DESCRIPTION

14       systemd-gpt-auto-generator is a unit generator that automatically
15       discovers root, /home, /srv and swap partitions and creates mount and
16       swap units for them, based on the partition type GUIDs of GUID
17       partition tables (GPT). It implements the Discoverable Partitions
18       Specification[1]. Note that this generator has no effect on non-GPT
19       systems, on systems where the units are explicitly configured (for
20       example, listed in fstab(5)), or where the mount points are non-empty.
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22       This generator will only look for root partitions on the same physical
23       disk the EFI System Partition (ESP) is located on. It will only look
24       for the other partitions on the same physical disk the root file system
25       is located on. These partitions will not be searched on systems where
26       the root file system is distributed on multiple disks, for example via
27       btrfs RAID.
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29       systemd-gpt-auto-generator is useful for centralizing file system
30       configuration in the partition table and making manual configuration in
31       /etc/fstab or suchlike unnecessary.
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33       This generator looks for the partitions based on their partition type
34       GUID. The following partition type GUIDs are identified:
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36       Table 1. Partition Type GUIDs
37       ┌─────────────────────────────────────┬────────────────┬─────────────────────┐
38Partition Type GUID                  Name           Explanation         
39       ├─────────────────────────────────────┼────────────────┼─────────────────────┤
40       │44479540-f297-41b2-9af7-d131d5f0458a │ Root Partition │ On 32-bit x86       │
41       │                                     │ (x86)          │ systems, the first  │
42       │                                     │                │ x86 root partition  │
43       │                                     │                │ on the disk the EFI │
44       │                                     │                │ ESP is located on   │
45       │                                     │                │ is mounted to the   │
46       │                                     │                │ root directory /.   │
47       ├─────────────────────────────────────┼────────────────┼─────────────────────┤
48       │4f68bce3-e8cd-4db1-96e7-fbcaf984b709 │ Root Partition │ On 64-bit x86       │
49       │                                     │ (x86-64)       │ systems, the first  │
50       │                                     │                │ x86-64 root         │
51       │                                     │                │ partition on the    │
52       │                                     │                │ disk the EFI ESP is │
53       │                                     │                │ located on is       │
54       │                                     │                │ mounted to the root │
55       │                                     │                │ directory /.        │
56       ├─────────────────────────────────────┼────────────────┼─────────────────────┤
57       │69dad710-2ce4-4e3c-b16c-21a1d49abed3 │ Root Partition │ On 32-bit ARM       │
58       │                                     │ (32-bit ARM)   │ systems, the first  │
59       │                                     │                │ ARM root partition  │
60       │                                     │                │ on the disk the EFI │
61       │                                     │                │ ESP is located on   │
62       │                                     │                │ is mounted to the   │
63       │                                     │                │ root directory /.   │
64       ├─────────────────────────────────────┼────────────────┼─────────────────────┤
65       │b921b045-1df0-41c3-af44-4c6f280d3fae │ Root Partition │ On 64-bit ARM       │
66       │                                     │ (64-bit ARM)   │ systems, the first  │
67       │                                     │                │ ARM root partition  │
68       │                                     │                │ on the disk the EFI │
69       │                                     │                │ ESP is located on   │
70       │                                     │                │ is mounted to the   │
71       │                                     │                │ root directory /.   │
72       ├─────────────────────────────────────┼────────────────┼─────────────────────┤
73       │933ac7e1-2eb4-4f13-b844-0e14e2aef915 │ Home Partition │ The first home      │
74       │                                     │                │ partition on the    │
75       │                                     │                │ disk the root       │
76       │                                     │                │ partition is        │
77       │                                     │                │ located on is       │
78       │                                     │                │ mounted to /home.   │
79       ├─────────────────────────────────────┼────────────────┼─────────────────────┤
80       │3b8f8425-20e0-4f3b-907f-1a25a76f98e8 │ Server Data    │ The first server    │
81       │                                     │ Partition      │ data partition on   │
82       │                                     │                │ the disk the root   │
83       │                                     │                │ partition is        │
84       │                                     │                │ located on is       │
85       │                                     │                │ mounted to /srv.    │
86       ├─────────────────────────────────────┼────────────────┼─────────────────────┤
87       │0657fd6d-a4ab-43c4-84e5-0933c84b4f4f │ Swap           │ All swap partitions │
88       │                                     │                │ located on the disk │
89       │                                     │                │ the root partition  │
90       │                                     │                │ is located on are   │
91       │                                     │                │ enabled.            │
92       └─────────────────────────────────────┴────────────────┴─────────────────────┘
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94       The /home and /srv partitions may be encrypted in LUKS format. In this
95       case a device mapper device is set up under the names /dev/mapper/home
96       and /dev/mapper/srv. Note that this might create conflicts if the same
97       partition is listed in /etc/crypttab with a different device mapper
98       device name.
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100       Also note that systemd-efi-boot-generator(8) will mount the EFI System
101       Partition (ESP) to /boot if not otherwise mounted.
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103       When using this generator in conjunction with btrfs file systems, make
104       sure to set the correct default subvolumes on them, using btrfs
105       subvolume set-default.
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107       systemd-gpt-auto-generator implements systemd.generator(7).
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SEE ALSO

110       systemd(1), systemd.mount(5), systemd.swap(5), systemd-fstab-
111       generator(8), systemd-efi-boot-generator(8), systemd-
112       cryptsetup@.service(8), cryptsetup(8), fstab(5), btrfs(8)
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NOTES

115        1. Discoverable Partitions Specification
116           http://www.freedesktop.org/wiki/Specifications/DiscoverablePartitionsSpec/
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120systemd 219                                      SYSTEMD-GPT-AUTO-GENERATOR(8)
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