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1 | <?xml version="1.0"?> |
2 | <!--*-nxml-*--> | |
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3 | <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" |
4 | "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> | |
db9ecf05 | 5 | <!-- SPDX-License-Identifier: LGPL-2.1-or-later --> |
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6 | <refentry id="systemd-makefs@.service"> |
7 | ||
8 | <refentryinfo> | |
9 | <title>systemd-makefs@.service</title> | |
10 | <productname>systemd</productname> | |
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11 | </refentryinfo> |
12 | ||
13 | <refmeta> | |
14 | <refentrytitle>systemd-makefs@.service</refentrytitle> | |
15 | <manvolnum>8</manvolnum> | |
16 | </refmeta> | |
17 | ||
18 | <refnamediv> | |
19 | <refname>systemd-makefs@.service</refname> | |
88eb0519 | 20 | <refname>systemd-mkswap@.service</refname> |
58e0ac33 | 21 | <refname>systemd-growfs@.service</refname> |
61ccf030 | 22 | <refname>systemd-growfs-root.service</refname> |
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23 | <refname>systemd-makefs</refname> |
24 | <refname>systemd-growfs</refname> | |
25 | <refpurpose>Creating and growing file systems on demand</refpurpose> | |
26 | </refnamediv> | |
27 | ||
28 | <refsynopsisdiv> | |
29 | <para><filename>systemd-makefs@<replaceable>device</replaceable>.service</filename></para> | |
88eb0519 | 30 | <para><filename>systemd-mkswap@<replaceable>device</replaceable>.service</filename></para> |
58e0ac33 | 31 | <para><filename>systemd-growfs@<replaceable>mountpoint</replaceable>.service</filename></para> |
61ccf030 | 32 | <para><filename>systemd-growfs-root.service</filename></para> |
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33 | <para><filename>/usr/lib/systemd/systemd-makefs</filename></para> |
34 | <para><filename>/usr/lib/systemd/systemd-growfs</filename></para> | |
35 | </refsynopsisdiv> | |
36 | ||
37 | <refsect1> | |
38 | <title>Description</title> | |
39 | ||
40 | <para><filename>systemd-makefs@.service</filename>, | |
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41 | <filename>systemd-mkswap@.service</filename>, |
42 | <filename>systemd-growfs@.service</filename>, and | |
43 | <filename>systemd-growfs-root.service</filename> are used to implement the | |
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44 | <option>x-systemd.makefs</option> and <option>x-systemd.growfs</option> options |
45 | in <citerefentry project='man-pages'><refentrytitle>fstab</refentrytitle><manvolnum>5</manvolnum></citerefentry>, | |
46 | see <citerefentry><refentrytitle>systemd.mount</refentrytitle><manvolnum>5</manvolnum></citerefentry>. | |
47 | They are instantiated for each device for which the file system or swap structure | |
1b2ad5d9 | 48 | needs to be initialized, and for each mount point where the file system needs to |
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49 | be grown.</para> |
50 | ||
51 | <para>These services are started at boot, either right before or right after the | |
52 | mount point or swap device are used.</para> | |
53 | ||
54 | <para><filename>systemd-makefs</filename> knows very little about specific file | |
55 | systems and swap devices, and after checking that the block device does not already | |
56 | contain a file system or other content, it will execute binaries specific to | |
c2ad8c09 | 57 | each filesystem type (<filename>/sbin/mkfs.<replaceable>type</replaceable></filename> |
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58 | or <filename>/sbin/mkswap</filename>). For certain file system types (currently |
59 | ext2/ext3/<citerefentry project='man-pages'><refentrytitle>ext4</refentrytitle><manvolnum>5</manvolnum></citerefentry>, | |
be57c176 | 60 | <citerefentry project='url'><refentrytitle url='https://btrfs.readthedocs.io/en/latest/btrfs-man5.html'>btrfs</refentrytitle><manvolnum>5</manvolnum></citerefentry>, |
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61 | <citerefentry project='man-pages'><refentrytitle>xfs</refentrytitle><manvolnum>5</manvolnum></citerefentry>, |
62 | f2fs, vfat) and for swap devices, it will configure reasonable defaults and set | |
63 | the file system label and UUID based on the device name.</para> | |
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64 | |
65 | <para><filename>systemd-growfs</filename> knows very little about specific file | |
66 | systems and swap devices, and will instruct the kernel to grow the mounted | |
67 | filesystem to full size of the underlying block device. Nevertheless, it needs | |
68 | to know the | |
69 | <citerefentry project='man-pages'><refentrytitle>ioctl</refentrytitle><manvolnum>2</manvolnum></citerefentry> | |
70 | number specific to each file system, so only certain types are supported. | |
71 | Currently: | |
72 | <citerefentry project='man-pages'><refentrytitle>ext4</refentrytitle><manvolnum>5</manvolnum></citerefentry>, | |
be57c176 | 73 | <citerefentry project='url'><refentrytitle url='https://btrfs.readthedocs.io/en/latest/btrfs-man5.html'>btrfs</refentrytitle><manvolnum>5</manvolnum></citerefentry>, |
76b73ce2 | 74 | <citerefentry project='man-pages'><refentrytitle>xfs</refentrytitle><manvolnum>5</manvolnum></citerefentry>, |
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75 | <!-- yes, that's what the man page is called. --> |
76 | and dm-crypt partitions (see | |
77 | <citerefentry project='die-net'><refentrytitle>cryptsetup</refentrytitle><manvolnum>8</manvolnum></citerefentry>). | |
78 | </para> | |
79 | ||
80 | <para>If the creation of a file system or swap device fails, the mount point or | |
81 | swap is failed too. If the growing of a file system fails, a warning is emitted. | |
82 | </para> | |
83 | </refsect1> | |
84 | ||
85 | <refsect1> | |
86 | <title>See Also</title> | |
87 | <para> | |
88 | <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, | |
89 | <citerefentry><refentrytitle>systemd.mount</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
90 | <citerefentry><refentrytitle>systemd-fstab-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
917cc808 | 91 | <citerefentry><refentrytitle>systemd-repart</refentrytitle><manvolnum>8</manvolnum></citerefentry>, |
be57c176 | 92 | <citerefentry project='url'><refentrytitle url='https://btrfs.readthedocs.io/en/latest/mkfs.btrfs.html'>mkfs.btrfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>, |
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93 | <citerefentry project='man-pages'><refentrytitle>mkfs.cramfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>, |
94 | <citerefentry project='man-pages'><refentrytitle>mkfs.ext4</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
95 | <citerefentry project='man-pages'><refentrytitle>mkfs.fat</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
96 | <citerefentry project='man-pages'><refentrytitle>mkfs.hfsplus</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
97 | <citerefentry project='man-pages'><refentrytitle>mkfs.minix</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
98 | <citerefentry project='man-pages'><refentrytitle>mkfs.ntfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
99 | <citerefentry project='man-pages'><refentrytitle>mkfs.xfs</refentrytitle><manvolnum>8</manvolnum></citerefentry> | |
100 | </para> | |
101 | </refsect1> | |
102 | ||
103 | </refentry> |