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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"> | |
0307f791 | 5 | <!-- SPDX-License-Identifier: LGPL-2.1+ --> |
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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> | |
21 | <refname>systemd-fsck</refname> | |
22 | <refpurpose>File system checker logic</refpurpose> | |
23 | </refnamediv> | |
24 | ||
25 | <refsynopsisdiv> | |
26 | <para><filename>systemd-fsck@.service</filename></para> | |
27 | <para><filename>systemd-fsck-root.service</filename></para> | |
12b42c76 | 28 | <para><filename>/usr/lib/systemd/systemd-fsck</filename></para> |
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29 | </refsynopsisdiv> |
30 | ||
31 | <refsect1> | |
32 | <title>Description</title> | |
33 | ||
34 | <para><filename>systemd-fsck@.service</filename> and | |
35 | <filename>systemd-fsck-root.service</filename> are services | |
36 | responsible for file system checks. They are instantiated for each | |
37 | device that is configured for file system checking. | |
38 | <filename>systemd-fsck-root.service</filename> is responsible for | |
349ca6e6 | 39 | file system checks on the root file system, but only if the |
7ca41557 | 40 | root filesystem was not checked in the initramfs. |
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41 | <filename>systemd-fsck@.service</filename> is used for all other |
42 | file systems and for the root file system in the initramfs.</para> | |
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 | |
f8b68539 | 54 | (<filename>/sbin/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 | ||
96d9117a | 58 | <para>If a file system check fails for a service without |
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59 | <option>nofail</option>, emergency mode is activated, by isolating |
60 | to <filename>emergency.target</filename>.</para> | |
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61 | </refsect1> |
62 | ||
63 | <refsect1> | |
64 | <title>Kernel Command Line</title> | |
65 | ||
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66 | <para><filename>systemd-fsck</filename> understands these kernel |
67 | command line parameters:</para> | |
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68 | |
69 | <variablelist class='kernel-commandline-options'> | |
70 | <varlistentry> | |
71 | <term><varname>fsck.mode=</varname></term> | |
72 | ||
73 | <listitem><para>One of <literal>auto</literal>, | |
74 | <literal>force</literal>, <literal>skip</literal>. Controls | |
75 | the mode of operation. The default is <literal>auto</literal>, | |
76 | and ensures that file system checks are done when the file | |
77 | system checker deems them necessary. <literal>force</literal> | |
78 | unconditionally results in full file system checks. | |
79 | <literal>skip</literal> skips any file system | |
80 | checks.</para></listitem> | |
81 | </varlistentry> | |
82 | ||
83 | <varlistentry> | |
84 | <term><varname>fsck.repair=</varname></term> | |
85 | ||
86 | <listitem><para>One of <literal>preen</literal>, | |
87 | <literal>yes</literal>, <literal>no</literal>. Controls the | |
2dcf2a17 | 88 | mode of operation. The default is <literal>preen</literal>, |
798d3a52 | 89 | and will automatically repair problems that can be safely |
2dcf2a17 | 90 | fixed. <literal>yes</literal> will answer yes to all |
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91 | questions by fsck and <literal>no</literal> will answer no to |
92 | all questions. </para></listitem> | |
93 | </varlistentry> | |
94 | </variablelist> | |
95 | </refsect1> | |
96 | ||
97 | <refsect1> | |
98 | <title>See Also</title> | |
99 | <para> | |
100 | <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, | |
a80170f5 | 101 | <citerefentry project='man-pages'><refentrytitle>fsck</refentrytitle><manvolnum>8</manvolnum></citerefentry>, |
798d3a52 | 102 | <citerefentry><refentrytitle>systemd-quotacheck.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, |
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103 | <citerefentry project='man-pages'><refentrytitle>fsck.btrfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>, |
104 | <citerefentry project='man-pages'><refentrytitle>fsck.cramfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
105 | <citerefentry project='man-pages'><refentrytitle>fsck.ext4</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
106 | <citerefentry project='man-pages'><refentrytitle>fsck.fat</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
107 | <citerefentry project='man-pages'><refentrytitle>fsck.hfsplus</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
108 | <citerefentry project='man-pages'><refentrytitle>fsck.minix</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
109 | <citerefentry project='man-pages'><refentrytitle>fsck.ntfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>, | |
110 | <citerefentry project='man-pages'><refentrytitle>fsck.xfs</refentrytitle><manvolnum>8</manvolnum></citerefentry> | |
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111 | </para> |
112 | </refsect1> | |
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113 | |
114 | </refentry> |