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1 | <?xml version="1.0"?> |
2 | <!--*-nxml-*--> | |
3 | <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> | |
4 | <!-- | |
5 | SPDX-License-Identifier: LGPL-2.1+ | |
6 | ||
7 | This file is part of systemd. | |
8 | ||
9 | Copyright 2017 Zbigniew Jędrzejewski-Szmek | |
58e0ac33 ZJS |
10 | --> |
11 | <refentry id="systemd-makefs@.service"> | |
12 | ||
13 | <refentryinfo> | |
14 | <title>systemd-makefs@.service</title> | |
15 | <productname>systemd</productname> | |
16 | ||
17 | <authorgroup> | |
18 | <author> | |
19 | <contrib>Developer</contrib> | |
20 | <firstname>Zbigniew</firstname> | |
21 | <surname>Jędrzejewski-Szmek</surname> | |
22 | <email>zbyszek@in.waw.pl</email> | |
23 | </author> | |
24 | </authorgroup> | |
25 | </refentryinfo> | |
26 | ||
27 | <refmeta> | |
28 | <refentrytitle>systemd-makefs@.service</refentrytitle> | |
29 | <manvolnum>8</manvolnum> | |
30 | </refmeta> | |
31 | ||
32 | <refnamediv> | |
33 | <refname>systemd-makefs@.service</refname> | |
34 | <refname>systemd-makeswap@.service</refname> | |
35 | <refname>systemd-growfs@.service</refname> | |
36 | <refname>systemd-makefs</refname> | |
37 | <refname>systemd-growfs</refname> | |
38 | <refpurpose>Creating and growing file systems on demand</refpurpose> | |
39 | </refnamediv> | |
40 | ||
41 | <refsynopsisdiv> | |
42 | <para><filename>systemd-makefs@<replaceable>device</replaceable>.service</filename></para> | |
43 | <para><filename>systemd-makeswap@<replaceable>device</replaceable>.service</filename></para> | |
44 | <para><filename>systemd-growfs@<replaceable>mountpoint</replaceable>.service</filename></para> | |
45 | <para><filename>/usr/lib/systemd/systemd-makefs</filename></para> | |
46 | <para><filename>/usr/lib/systemd/systemd-growfs</filename></para> | |
47 | </refsynopsisdiv> | |
48 | ||
49 | <refsect1> | |
50 | <title>Description</title> | |
51 | ||
52 | <para><filename>systemd-makefs@.service</filename>, | |
53 | <filename>systemd-makeswap@.service</filename>, and | |
54 | <filename>systemd-growfs@.service</filename> are used to implement the | |
55 | <option>x-systemd.makefs</option> and <option>x-systemd.growfs</option> options | |
56 | in <citerefentry project='man-pages'><refentrytitle>fstab</refentrytitle><manvolnum>5</manvolnum></citerefentry>, | |
57 | see <citerefentry><refentrytitle>systemd.mount</refentrytitle><manvolnum>5</manvolnum></citerefentry>. | |
58 | They are instantiated for each device for which the file system or swap structure | |
59 | needs to be initalized, and for each mount point where the file system needs to | |
60 | be grown.</para> | |
61 | ||
62 | <para>These services are started at boot, either right before or right after the | |
63 | mount point or swap device are used.</para> | |
64 | ||
65 | <para><filename>systemd-makefs</filename> knows very little about specific file | |
66 | systems and swap devices, and after checking that the block device does not already | |
67 | contain a file system or other content, it will execute binaries specific to | |
68 | each filesystem type (<filename>/sbin/mkfs.*</filename>).</para> | |
69 | ||
70 | <para><filename>systemd-growfs</filename> knows very little about specific file | |
71 | systems and swap devices, and will instruct the kernel to grow the mounted | |
72 | filesystem to full size of the underlying block device. Nevertheless, it needs | |
73 | to know the | |
74 | <citerefentry project='man-pages'><refentrytitle>ioctl</refentrytitle><manvolnum>2</manvolnum></citerefentry> | |
75 | number specific to each file system, so only certain types are supported. | |
76 | Currently: | |
77 | <citerefentry project='man-pages'><refentrytitle>ext4</refentrytitle><manvolnum>5</manvolnum></citerefentry>, | |
78 | btrfs (see | |
79 | <citerefentry project='man-pages'><refentrytitle>btrfs-man5</refentrytitle><manvolnum>5</manvolnum></citerefentry>), | |
80 | <!-- yes, that's what the man page is called. --> | |
81 | and dm-crypt partitions (see | |
82 | <citerefentry project='die-net'><refentrytitle>cryptsetup</refentrytitle><manvolnum>8</manvolnum></citerefentry>). | |
83 | </para> | |
84 | ||
85 | <para>If the creation of a file system or swap device fails, the mount point or | |
86 | swap is failed too. If the growing of a file system fails, a warning is emitted. | |
87 | </para> | |
88 | </refsect1> | |
89 | ||
90 | <refsect1> | |
91 | <title>See Also</title> | |
92 | <para> | |
93 | <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, | |
94 | <citerefentry><refentrytitle>systemd.mount</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
95 | <citerefentry><refentrytitle>systemd-fstab-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
96 | <citerefentry project='man-pages'><refentrytitle>mkfs.btrfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
97 | <citerefentry project='man-pages'><refentrytitle>mkfs.cramfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
98 | <citerefentry project='man-pages'><refentrytitle>mkfs.ext4</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
99 | <citerefentry project='man-pages'><refentrytitle>mkfs.fat</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
100 | <citerefentry project='man-pages'><refentrytitle>mkfs.hfsplus</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
101 | <citerefentry project='man-pages'><refentrytitle>mkfs.minix</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
102 | <citerefentry project='man-pages'><refentrytitle>mkfs.ntfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
103 | <citerefentry project='man-pages'><refentrytitle>mkfs.xfs</refentrytitle><manvolnum>8</manvolnum></citerefentry> | |
104 | </para> | |
105 | </refsect1> | |
106 | ||
107 | </refentry> |