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115 lines
5.2 KiB
XML
115 lines
5.2 KiB
XML
<?xml version="1.0"?>
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<!--*-nxml-*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
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<refentry id="systemd-fsck@.service">
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<refentryinfo>
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<title>systemd-fsck@.service</title>
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<productname>systemd</productname>
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</refentryinfo>
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<refmeta>
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<refentrytitle>systemd-fsck@.service</refentrytitle>
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<manvolnum>8</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>systemd-fsck@.service</refname>
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<refname>systemd-fsck-root.service</refname>
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<refname>systemd-fsck</refname>
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<refpurpose>File system checker logic</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<para><filename>systemd-fsck@.service</filename></para>
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<para><filename>systemd-fsck-root.service</filename></para>
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<para><filename>/usr/lib/systemd/systemd-fsck</filename></para>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><filename>systemd-fsck@.service</filename> and
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<filename>systemd-fsck-root.service</filename> are services
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responsible for file system checks. They are instantiated for each
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device that is configured for file system checking.
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<filename>systemd-fsck-root.service</filename> is responsible for
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file system checks on the root file system, but only if the
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root filesystem was not checked in the initramfs.
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<filename>systemd-fsck@.service</filename> is used for all other
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file systems and for the root file system in the initramfs.</para>
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<para>These services are started at boot if
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<option>passno</option> in <filename>/etc/fstab</filename> for the
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file system is set to a value greater than zero. The file system
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check for root is performed before the other file systems. Other
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file systems may be checked in parallel, except when they are on
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the same rotating disk.</para>
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<para><filename>systemd-fsck</filename> does not know any details
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about specific filesystems, and simply executes file system
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checkers specific to each filesystem type
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(<filename>/sbin/fsck.<replaceable>type</replaceable></filename>). These checkers will decide if
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the filesystem should actually be checked based on the time since
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last check, number of mounts, unclean unmount, etc.</para>
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<para>If a file system check fails for a service without
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<option>nofail</option>, emergency mode is activated, by isolating
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to <filename>emergency.target</filename>.</para>
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</refsect1>
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<refsect1>
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<title>Kernel Command Line</title>
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<para><filename>systemd-fsck</filename> understands these kernel
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command line parameters:</para>
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<variablelist class='kernel-commandline-options'>
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<varlistentry>
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<term><varname>fsck.mode=</varname></term>
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<listitem><para>One of <literal>auto</literal>,
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<literal>force</literal>, <literal>skip</literal>. Controls
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the mode of operation. The default is <literal>auto</literal>,
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and ensures that file system checks are done when the file
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system checker deems them necessary. <literal>force</literal>
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unconditionally results in full file system checks.
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<literal>skip</literal> skips any file system
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checks.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>fsck.repair=</varname></term>
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<listitem><para>One of <literal>preen</literal>,
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<literal>yes</literal>, <literal>no</literal>. Controls the
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mode of operation. The default is <literal>preen</literal>,
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and will automatically repair problems that can be safely
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fixed. <literal>yes</literal> will answer yes to all
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questions by fsck and <literal>no</literal> will answer no to
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all questions. </para></listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry project='man-pages'><refentrytitle>fsck</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-quotacheck.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry project='man-pages'><refentrytitle>fsck.btrfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry project='man-pages'><refentrytitle>fsck.cramfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry project='man-pages'><refentrytitle>fsck.ext4</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry project='man-pages'><refentrytitle>fsck.fat</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry project='man-pages'><refentrytitle>fsck.hfsplus</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry project='man-pages'><refentrytitle>fsck.minix</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry project='man-pages'><refentrytitle>fsck.ntfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry project='man-pages'><refentrytitle>fsck.xfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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