systemd/man/systemd-fsck@.service.html
2014-11-20 15:28:12 +01:00

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<a href="../libudev/index.html">gudev </a><span style="float:right">systemd 217</span><hr><div class="refentry"><a name="systemd-fsck@.service"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>systemd-fsck@.service, systemd-fsck-root.service, systemd-fsck — File system checker logic</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><p><code class="filename">systemd-fsck@.service</code></p><p><code class="filename">systemd-fsck-root.service</code></p><p><code class="filename">/usr/lib/systemd/systemd-fsck</code></p></div><div class="refsect1"><a name="idm214171488128"></a><h2 id="Description">Description<a class="headerlink" title="Permalink to this headline" href="#Description"></a></h2><p><code class="filename">systemd-fsck@.service</code> and
<code class="filename">systemd-fsck-root.service</code> are
services responsible for file system checks. They are
instantiated for each device that is configured for
file system checking.
<code class="filename">systemd-fsck-root.service</code> is
responsible for file system checks on the root file
system, but in only if the root filesystem wasn't
checked in the initramfs.
<code class="filename">systemd-fsck@.service</code> is used for
all other file systems and for the root file system in
the initramfs.</p><p>Those services are started at boot if
<code class="option">passno</code> in
<code class="filename">/etc/fstab</code> for the file system is
set to a value greater than zero. The file system
check for root is performed before the other file
systems. Other file systems may be checked in
parallel, except when they are one the same rotating
disk.</p><p><code class="filename">systemd-fsck</code> does not know
any details about specific filesystems, and simply
executes file system checkers specific to each
filesystem type (<code class="filename">/sbin/fsck.*</code>).
This helper will decide if the filesystem should
actually be checked based on the time since last
check, number of mounts, unclean unmount, etc.</p><p><code class="filename">systemd-fsck</code> will forward
file system checking progress to the console. If a
file system check fails for a service without
<code class="option">nofail</code>, emergency mode is activated,
by isolating to
<code class="filename">emergency.target</code>.</p></div><div class="refsect1"><a name="idm214171359008"></a><h2 id="Kernel Command Line">Kernel Command Line<a class="headerlink" title="Permalink to this headline" href="#Kernel%20Command%20Line"></a></h2><p><code class="filename">systemd-fsck</code> understands
one kernel command line parameter:</p><div class="variablelist"><dl class="variablelist"><dt id="fsck.mode="><span class="term"><code class="varname">fsck.mode=</code></span><a class="headerlink" title="Permalink to this term" href="#fsck.mode="></a></dt><dd><p>One of
"<code class="literal">auto</code>",
"<code class="literal">force</code>",
"<code class="literal">skip</code>". Controls the
mode of operation. The default is
"<code class="literal">auto</code>", and ensures
that file system checks are done when
the file system checker deems them
necessary. "<code class="literal">force</code>"
unconditionally results in full file
system checks. "<code class="literal">skip</code>"
skips any file system
checks.</p></dd><dt id="fsck.repair="><span class="term"><code class="varname">fsck.repair=</code></span><a class="headerlink" title="Permalink to this term" href="#fsck.repair="></a></dt><dd><p>One of
"<code class="literal">preen</code>",
"<code class="literal">yes</code>",
"<code class="literal">no</code>". Controls the
mode of operation. The default is "<code class="literal">
preen</code>", and will automatically repair
problems that can be safely fixed. "<code class="literal">yes
</code>" will answer yes to all questions by
fsck and "<code class="literal">no</code>" will answer no to
all questions.
</p></dd></dl></div></div><div class="refsect1"><a name="idm214171539424"></a><h2 id="See Also">See Also<a class="headerlink" title="Permalink to this headline" href="#See%20Also"></a></h2><p>
<a href="systemd.html"><span class="citerefentry"><span class="refentrytitle">systemd</span>(1)</span></a>,
<a href="fsck.html"><span class="citerefentry"><span class="refentrytitle">fsck</span>(8)</span></a>,
<a href="systemd-quotacheck.service.html"><span class="citerefentry"><span class="refentrytitle">systemd-quotacheck.service</span>(8)</span></a>,
<a href="fsck.btrfs.html"><span class="citerefentry"><span class="refentrytitle">fsck.btrfs</span>(8)</span></a>,
<a href="fsck.cramfs.html"><span class="citerefentry"><span class="refentrytitle">fsck.cramfs</span>(8)</span></a>,
<a href="fsck.ext4.html"><span class="citerefentry"><span class="refentrytitle">fsck.ext4</span>(8)</span></a>,
<a href="fsck.fat.html"><span class="citerefentry"><span class="refentrytitle">fsck.fat</span>(8)</span></a>,
<a href="fsck.hfsplus.html"><span class="citerefentry"><span class="refentrytitle">fsck.hfsplus</span>(8)</span></a>,
<a href="fsck.minix.html"><span class="citerefentry"><span class="refentrytitle">fsck.minix</span>(8)</span></a>,
<a href="fsck.ntfs.html"><span class="citerefentry"><span class="refentrytitle">fsck.ntfs</span>(8)</span></a>,
<a href="fsck.xfs.html"><span class="citerefentry"><span class="refentrytitle">fsck.xfs</span>(8)</span></a>
</p></div></div></body></html>