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1 | <?xml version="1.0"?> |
2 | <!--*-nxml-*--> | |
12b42c76 | 3 | <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> |
a32f224a | 4 | <!-- |
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5 | SPDX-License-Identifier: LGPL-2.1+ |
6 | ||
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7 | This file is part of systemd. |
8 | ||
9 | Copyright 2012 Lennart Poettering | |
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10 | --> |
11 | <refentry id="systemd-fsck@.service"> | |
12 | ||
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13 | <refentryinfo> |
14 | <title>systemd-fsck@.service</title> | |
15 | <productname>systemd</productname> | |
16 | ||
17 | <authorgroup> | |
18 | <author> | |
19 | <contrib>Developer</contrib> | |
20 | <firstname>Lennart</firstname> | |
21 | <surname>Poettering</surname> | |
22 | <email>lennart@poettering.net</email> | |
23 | </author> | |
24 | </authorgroup> | |
25 | </refentryinfo> | |
26 | ||
27 | <refmeta> | |
28 | <refentrytitle>systemd-fsck@.service</refentrytitle> | |
29 | <manvolnum>8</manvolnum> | |
30 | </refmeta> | |
31 | ||
32 | <refnamediv> | |
33 | <refname>systemd-fsck@.service</refname> | |
34 | <refname>systemd-fsck-root.service</refname> | |
35 | <refname>systemd-fsck</refname> | |
36 | <refpurpose>File system checker logic</refpurpose> | |
37 | </refnamediv> | |
38 | ||
39 | <refsynopsisdiv> | |
40 | <para><filename>systemd-fsck@.service</filename></para> | |
41 | <para><filename>systemd-fsck-root.service</filename></para> | |
12b42c76 | 42 | <para><filename>/usr/lib/systemd/systemd-fsck</filename></para> |
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43 | </refsynopsisdiv> |
44 | ||
45 | <refsect1> | |
46 | <title>Description</title> | |
47 | ||
48 | <para><filename>systemd-fsck@.service</filename> and | |
49 | <filename>systemd-fsck-root.service</filename> are services | |
50 | responsible for file system checks. They are instantiated for each | |
51 | device that is configured for file system checking. | |
52 | <filename>systemd-fsck-root.service</filename> is responsible for | |
349ca6e6 | 53 | file system checks on the root file system, but only if the |
7ca41557 | 54 | root filesystem was not checked in the initramfs. |
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55 | <filename>systemd-fsck@.service</filename> is used for all other |
56 | file systems and for the root file system in the initramfs.</para> | |
57 | ||
a8eaaee7 | 58 | <para>These services are started at boot if |
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59 | <option>passno</option> in <filename>/etc/fstab</filename> for the |
60 | file system is set to a value greater than zero. The file system | |
61 | check for root is performed before the other file systems. Other | |
a8eaaee7 | 62 | file systems may be checked in parallel, except when they are on |
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63 | the same rotating disk.</para> |
64 | ||
65 | <para><filename>systemd-fsck</filename> does not know any details | |
66 | about specific filesystems, and simply executes file system | |
67 | checkers specific to each filesystem type | |
598749a8 | 68 | (<filename>/sbin/fsck.*</filename>). These checkers will decide if |
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69 | the filesystem should actually be checked based on the time since |
70 | last check, number of mounts, unclean unmount, etc.</para> | |
71 | ||
96d9117a | 72 | <para>If a file system check fails for a service without |
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73 | <option>nofail</option>, emergency mode is activated, by isolating |
74 | to <filename>emergency.target</filename>.</para> | |
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75 | </refsect1> |
76 | ||
77 | <refsect1> | |
78 | <title>Kernel Command Line</title> | |
79 | ||
2dcf2a17 LW |
80 | <para><filename>systemd-fsck</filename> understands these kernel |
81 | command line parameters:</para> | |
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82 | |
83 | <variablelist class='kernel-commandline-options'> | |
84 | <varlistentry> | |
85 | <term><varname>fsck.mode=</varname></term> | |
86 | ||
87 | <listitem><para>One of <literal>auto</literal>, | |
88 | <literal>force</literal>, <literal>skip</literal>. Controls | |
89 | the mode of operation. The default is <literal>auto</literal>, | |
90 | and ensures that file system checks are done when the file | |
91 | system checker deems them necessary. <literal>force</literal> | |
92 | unconditionally results in full file system checks. | |
93 | <literal>skip</literal> skips any file system | |
94 | checks.</para></listitem> | |
95 | </varlistentry> | |
96 | ||
97 | <varlistentry> | |
98 | <term><varname>fsck.repair=</varname></term> | |
99 | ||
100 | <listitem><para>One of <literal>preen</literal>, | |
101 | <literal>yes</literal>, <literal>no</literal>. Controls the | |
2dcf2a17 | 102 | mode of operation. The default is <literal>preen</literal>, |
798d3a52 | 103 | and will automatically repair problems that can be safely |
2dcf2a17 | 104 | fixed. <literal>yes</literal> will answer yes to all |
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105 | questions by fsck and <literal>no</literal> will answer no to |
106 | all questions. </para></listitem> | |
107 | </varlistentry> | |
108 | </variablelist> | |
109 | </refsect1> | |
110 | ||
111 | <refsect1> | |
112 | <title>See Also</title> | |
113 | <para> | |
114 | <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, | |
a80170f5 | 115 | <citerefentry project='man-pages'><refentrytitle>fsck</refentrytitle><manvolnum>8</manvolnum></citerefentry>, |
798d3a52 | 116 | <citerefentry><refentrytitle>systemd-quotacheck.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, |
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117 | <citerefentry project='man-pages'><refentrytitle>fsck.btrfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>, |
118 | <citerefentry project='man-pages'><refentrytitle>fsck.cramfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
119 | <citerefentry project='man-pages'><refentrytitle>fsck.ext4</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
120 | <citerefentry project='man-pages'><refentrytitle>fsck.fat</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
121 | <citerefentry project='man-pages'><refentrytitle>fsck.hfsplus</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
122 | <citerefentry project='man-pages'><refentrytitle>fsck.minix</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
123 | <citerefentry project='man-pages'><refentrytitle>fsck.ntfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
124 | <citerefentry project='man-pages'><refentrytitle>fsck.xfs</refentrytitle><manvolnum>8</manvolnum></citerefentry> | |
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125 | </para> |
126 | </refsect1> | |
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127 | |
128 | </refentry> |