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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 | <!-- |
572eb058 ZJS |
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 | |
10 | ||
11 | systemd is free software; you can redistribute it and/or modify it | |
12 | under the terms of the GNU Lesser General Public License as published by | |
13 | the Free Software Foundation; either version 2.1 of the License, or | |
14 | (at your option) any later version. | |
15 | ||
16 | systemd is distributed in the hope that it will be useful, but | |
17 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
19 | Lesser General Public License for more details. | |
20 | ||
21 | You should have received a copy of the GNU Lesser General Public License | |
22 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
23 | --> | |
24 | <refentry id="systemd-fsck@.service"> | |
25 | ||
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26 | <refentryinfo> |
27 | <title>systemd-fsck@.service</title> | |
28 | <productname>systemd</productname> | |
29 | ||
30 | <authorgroup> | |
31 | <author> | |
32 | <contrib>Developer</contrib> | |
33 | <firstname>Lennart</firstname> | |
34 | <surname>Poettering</surname> | |
35 | <email>lennart@poettering.net</email> | |
36 | </author> | |
37 | </authorgroup> | |
38 | </refentryinfo> | |
39 | ||
40 | <refmeta> | |
41 | <refentrytitle>systemd-fsck@.service</refentrytitle> | |
42 | <manvolnum>8</manvolnum> | |
43 | </refmeta> | |
44 | ||
45 | <refnamediv> | |
46 | <refname>systemd-fsck@.service</refname> | |
47 | <refname>systemd-fsck-root.service</refname> | |
48 | <refname>systemd-fsck</refname> | |
49 | <refpurpose>File system checker logic</refpurpose> | |
50 | </refnamediv> | |
51 | ||
52 | <refsynopsisdiv> | |
53 | <para><filename>systemd-fsck@.service</filename></para> | |
54 | <para><filename>systemd-fsck-root.service</filename></para> | |
12b42c76 | 55 | <para><filename>/usr/lib/systemd/systemd-fsck</filename></para> |
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56 | </refsynopsisdiv> |
57 | ||
58 | <refsect1> | |
59 | <title>Description</title> | |
60 | ||
61 | <para><filename>systemd-fsck@.service</filename> and | |
62 | <filename>systemd-fsck-root.service</filename> are services | |
63 | responsible for file system checks. They are instantiated for each | |
64 | device that is configured for file system checking. | |
65 | <filename>systemd-fsck-root.service</filename> is responsible for | |
349ca6e6 | 66 | file system checks on the root file system, but only if the |
7ca41557 | 67 | root filesystem was not checked in the initramfs. |
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68 | <filename>systemd-fsck@.service</filename> is used for all other |
69 | file systems and for the root file system in the initramfs.</para> | |
70 | ||
a8eaaee7 | 71 | <para>These services are started at boot if |
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72 | <option>passno</option> in <filename>/etc/fstab</filename> for the |
73 | file system is set to a value greater than zero. The file system | |
74 | check for root is performed before the other file systems. Other | |
a8eaaee7 | 75 | file systems may be checked in parallel, except when they are on |
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76 | the same rotating disk.</para> |
77 | ||
78 | <para><filename>systemd-fsck</filename> does not know any details | |
79 | about specific filesystems, and simply executes file system | |
80 | checkers specific to each filesystem type | |
81 | (<filename>/sbin/fsck.*</filename>). This helper will decide if | |
82 | the filesystem should actually be checked based on the time since | |
83 | last check, number of mounts, unclean unmount, etc.</para> | |
84 | ||
96d9117a | 85 | <para>If a file system check fails for a service without |
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86 | <option>nofail</option>, emergency mode is activated, by isolating |
87 | to <filename>emergency.target</filename>.</para> | |
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88 | </refsect1> |
89 | ||
90 | <refsect1> | |
91 | <title>Kernel Command Line</title> | |
92 | ||
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93 | <para><filename>systemd-fsck</filename> understands these kernel |
94 | command line parameters:</para> | |
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95 | |
96 | <variablelist class='kernel-commandline-options'> | |
97 | <varlistentry> | |
98 | <term><varname>fsck.mode=</varname></term> | |
99 | ||
100 | <listitem><para>One of <literal>auto</literal>, | |
101 | <literal>force</literal>, <literal>skip</literal>. Controls | |
102 | the mode of operation. The default is <literal>auto</literal>, | |
103 | and ensures that file system checks are done when the file | |
104 | system checker deems them necessary. <literal>force</literal> | |
105 | unconditionally results in full file system checks. | |
106 | <literal>skip</literal> skips any file system | |
107 | checks.</para></listitem> | |
108 | </varlistentry> | |
109 | ||
110 | <varlistentry> | |
111 | <term><varname>fsck.repair=</varname></term> | |
112 | ||
113 | <listitem><para>One of <literal>preen</literal>, | |
114 | <literal>yes</literal>, <literal>no</literal>. Controls the | |
2dcf2a17 | 115 | mode of operation. The default is <literal>preen</literal>, |
798d3a52 | 116 | and will automatically repair problems that can be safely |
2dcf2a17 | 117 | fixed. <literal>yes</literal> will answer yes to all |
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118 | questions by fsck and <literal>no</literal> will answer no to |
119 | all questions. </para></listitem> | |
120 | </varlistentry> | |
121 | </variablelist> | |
122 | </refsect1> | |
123 | ||
124 | <refsect1> | |
125 | <title>See Also</title> | |
126 | <para> | |
127 | <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, | |
a80170f5 | 128 | <citerefentry project='man-pages'><refentrytitle>fsck</refentrytitle><manvolnum>8</manvolnum></citerefentry>, |
798d3a52 | 129 | <citerefentry><refentrytitle>systemd-quotacheck.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, |
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130 | <citerefentry project='man-pages'><refentrytitle>fsck.btrfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>, |
131 | <citerefentry project='man-pages'><refentrytitle>fsck.cramfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
132 | <citerefentry project='man-pages'><refentrytitle>fsck.ext4</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
133 | <citerefentry project='man-pages'><refentrytitle>fsck.fat</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
134 | <citerefentry project='man-pages'><refentrytitle>fsck.hfsplus</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
135 | <citerefentry project='man-pages'><refentrytitle>fsck.minix</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
136 | <citerefentry project='man-pages'><refentrytitle>fsck.ntfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
137 | <citerefentry project='man-pages'><refentrytitle>fsck.xfs</refentrytitle><manvolnum>8</manvolnum></citerefentry> | |
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138 | </para> |
139 | </refsect1> | |
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140 | |
141 | </refentry> |