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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-fsck@.service"> |
7 | ||
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8 | <refentryinfo> |
9 | <title>systemd-fsck@.service</title> | |
10 | <productname>systemd</productname> | |
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11 | </refentryinfo> |
12 | ||
13 | <refmeta> | |
14 | <refentrytitle>systemd-fsck@.service</refentrytitle> | |
15 | <manvolnum>8</manvolnum> | |
16 | </refmeta> | |
17 | ||
18 | <refnamediv> | |
19 | <refname>systemd-fsck@.service</refname> | |
20 | <refname>systemd-fsck-root.service</refname> | |
5e975053 | 21 | <refname>systemd-fsck-usr.service</refname> |
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22 | <refname>systemd-fsck</refname> |
23 | <refpurpose>File system checker logic</refpurpose> | |
24 | </refnamediv> | |
25 | ||
26 | <refsynopsisdiv> | |
27 | <para><filename>systemd-fsck@.service</filename></para> | |
28 | <para><filename>systemd-fsck-root.service</filename></para> | |
5e975053 | 29 | <para><filename>systemd-fsck-usr.service</filename></para> |
12b42c76 | 30 | <para><filename>/usr/lib/systemd/systemd-fsck</filename></para> |
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31 | </refsynopsisdiv> |
32 | ||
33 | <refsect1> | |
34 | <title>Description</title> | |
35 | ||
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36 | <para><filename>systemd-fsck@.service</filename>, <filename>systemd-fsck-root.service</filename>, and |
37 | <filename>systemd-fsck-usr.service</filename> are services responsible for file system checks. They are | |
38 | instantiated for each device that is configured for file system checking. | |
39 | <filename>systemd-fsck-root.service</filename> and <filename>systemd-fsck-usr.service</filename> are | |
40 | responsible for file system checks on the root and /usr file system, respectively, but only if the root | |
41 | filesystem was not checked in the initrd. <filename>systemd-fsck@.service</filename> is used for all | |
42 | other file systems and for the root file system in the initrd.</para> | |
798d3a52 | 43 | |
a8eaaee7 | 44 | <para>These services are started at boot if |
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45 | <option>passno</option> in <filename>/etc/fstab</filename> for the |
46 | file system is set to a value greater than zero. The file system | |
47 | check for root is performed before the other file systems. Other | |
a8eaaee7 | 48 | file systems may be checked in parallel, except when they are on |
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49 | the same rotating disk.</para> |
50 | ||
51 | <para><filename>systemd-fsck</filename> does not know any details | |
52 | about specific filesystems, and simply executes file system | |
53 | checkers specific to each filesystem type | |
a108fcba | 54 | (<filename>fsck.<replaceable>type</replaceable></filename>). These checkers will decide if |
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55 | the filesystem should actually be checked based on the time since |
56 | last check, number of mounts, unclean unmount, etc.</para> | |
57 | ||
5e975053 | 58 | <para><filename>systemd-fsck-root.service</filename> and <filename>systemd-fsck-usr.service</filename> |
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59 | will activate <filename>reboot.target</filename> if <filename>fsck</filename> returns the "System |
60 | should reboot" condition, or <filename>emergency.target</filename> if <filename>fsck</filename> | |
4b499063 SL |
61 | returns the "Filesystem errors left uncorrected" condition.</para> |
62 | ||
63 | <para><filename>systemd-fsck@.service</filename> will fail if | |
a108fcba | 64 | <filename>fsck</filename> returns with either "System should reboot" |
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65 | or "Filesystem errors left uncorrected" conditions. For filesystems |
66 | listed in <filename>/etc/fstab</filename> without <literal>nofail</literal> | |
67 | or <literal>noauto</literal> options, <literal>local-fs.target</literal> | |
68 | will then activate <filename>emergency.target</filename>.</para> | |
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69 | </refsect1> |
70 | ||
71 | <refsect1> | |
72 | <title>Kernel Command Line</title> | |
73 | ||
2dcf2a17 LW |
74 | <para><filename>systemd-fsck</filename> understands these kernel |
75 | command line parameters:</para> | |
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76 | |
77 | <variablelist class='kernel-commandline-options'> | |
78 | <varlistentry> | |
79 | <term><varname>fsck.mode=</varname></term> | |
80 | ||
81 | <listitem><para>One of <literal>auto</literal>, | |
82 | <literal>force</literal>, <literal>skip</literal>. Controls | |
83 | the mode of operation. The default is <literal>auto</literal>, | |
84 | and ensures that file system checks are done when the file | |
85 | system checker deems them necessary. <literal>force</literal> | |
86 | unconditionally results in full file system checks. | |
87 | <literal>skip</literal> skips any file system | |
88 | checks.</para></listitem> | |
89 | </varlistentry> | |
90 | ||
91 | <varlistentry> | |
92 | <term><varname>fsck.repair=</varname></term> | |
93 | ||
94 | <listitem><para>One of <literal>preen</literal>, | |
95 | <literal>yes</literal>, <literal>no</literal>. Controls the | |
2dcf2a17 | 96 | mode of operation. The default is <literal>preen</literal>, |
798d3a52 | 97 | and will automatically repair problems that can be safely |
2dcf2a17 | 98 | fixed. <literal>yes</literal> will answer yes to all |
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99 | questions by fsck and <literal>no</literal> will answer no to |
100 | all questions. </para></listitem> | |
101 | </varlistentry> | |
102 | </variablelist> | |
103 | </refsect1> | |
104 | ||
105 | <refsect1> | |
106 | <title>See Also</title> | |
107 | <para> | |
108 | <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, | |
a80170f5 | 109 | <citerefentry project='man-pages'><refentrytitle>fsck</refentrytitle><manvolnum>8</manvolnum></citerefentry>, |
798d3a52 | 110 | <citerefentry><refentrytitle>systemd-quotacheck.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, |
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111 | <citerefentry project='man-pages'><refentrytitle>fsck.btrfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>, |
112 | <citerefentry project='man-pages'><refentrytitle>fsck.cramfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
113 | <citerefentry project='man-pages'><refentrytitle>fsck.ext4</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
114 | <citerefentry project='man-pages'><refentrytitle>fsck.fat</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
115 | <citerefentry project='man-pages'><refentrytitle>fsck.hfsplus</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
116 | <citerefentry project='man-pages'><refentrytitle>fsck.minix</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
117 | <citerefentry project='man-pages'><refentrytitle>fsck.ntfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
118 | <citerefentry project='man-pages'><refentrytitle>fsck.xfs</refentrytitle><manvolnum>8</manvolnum></citerefentry> | |
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119 | </para> |
120 | </refsect1> | |
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121 | |
122 | </refentry> |