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For a longer discussion see this: http://lists.freedesktop.org/archives/systemd-devel/2015-April/030175.html This introduces /run/systemd/fsck.progress as a simply AF_UNIX/SOCK_STREAM socket. If it exists and is connectable we'll connect fsck's -c switch with it. If external programs want to get progress data they should hence listen on this socket and will get all they need via that socket. To get information about the connecting fsck client they should use SO_PEERCRED. Unless /run/systemd/fsck.progress is around and connectable this change reverts back to v219 behaviour where we'd forward fsck output to /dev/console on our own.
140 lines
6.0 KiB
XML
140 lines
6.0 KiB
XML
<?xml version="1.0"?>
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<!--*-nxml-*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!--
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This file is part of systemd.
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Copyright 2012 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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-->
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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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<authorgroup>
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<author>
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<contrib>Developer</contrib>
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<firstname>Lennart</firstname>
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<surname>Poettering</surname>
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<email>lennart@poettering.net</email>
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</author>
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</authorgroup>
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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 in only if the
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root filesystem wasn't 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>Those 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 one
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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.*</filename>). This helper 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 one kernel
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command line parameter:</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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