</refsynopsisdiv>
<refsect1><title>Description</title>
- <para>udevd listens to kernel uevents and executes the instructions specified
- in rules. On startup the content of the directory
- <filename>/lib/udev/devices</filename> is copied to <filename>/dev</filename>.
- If kernel modules specify static device nodes, these nodes are created
- even wihtout a corresponding kernel device, to allow on-demand loading of kernel
- modules. Matching permissions specified in udev rules are applied to these
- static device nodes. The behavior of the running daemon can be changed with
+ <para>udevd listens to kernel uevents. For every event, udevd executes matching
+ instructions specified in udev rules. See <citerefentry>
+ <refentrytitle>udev</refentrytitle><manvolnum>7</manvolnum>
+ </citerefentry>.</para>
+ <para>On startup the content of the directory <filename>/lib/udev/devices</filename>
+ is copied to <filename>/dev</filename>. If kernel modules specify static device
+ nodes, these nodes are created even without a corresponding kernel device, to
+ allow on-demand loading of kernel modules. Matching permissions specified in udev
+ rules are applied to these static device nodes.</para>
+ <para>The behavior of the running daemon can be changed with
<command>udevadm control</command>.</para>
</refsect1>
<varlistentry>
<term><option>--children-max=</option></term>
<listitem>
- <para>Limit the number of parallel executed events.
- </para>
+ <para>Limit the number of parallel executed events.</para>
</listitem>
</varlistentry>
<varlistentry>
<refsect1><title>Environment</title>
<variablelist>
<varlistentry>
- <term><option>UDEV_LOG</option></term>
+ <term><varname>UDEV_LOG=</varname></term>
+ <listitem>
+ <para>Set the logging priority.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1><title>Kernel command line</title>
+ <variablelist>
+ <varlistentry>
+ <term><varname>udev.log-priority=</varname></term>
+ <listitem>
+ <para>Set the logging priority.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>udev.children-max=</varname></term>
+ <listitem>
+ <para>Limit the number of parallel executed events.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><varname>udev.exec-delay=</varname></term>
<listitem>
- <para>Overrides the syslog priority specified in the config file.</para>
+ <para>Number of seconds to delay the execution of RUN instructions.
+ This might be useful when debugging system crashes during coldplug
+ cause by loading non-working kernel modules.</para>
</listitem>
</varlistentry>
</variablelist>
<title>See Also</title>
<para><citerefentry>
<refentrytitle>udev</refentrytitle><manvolnum>7</manvolnum>
- </citerefentry>,
- <citerefentry>
+ </citerefentry>, <citerefentry>
<refentrytitle>udevadm</refentrytitle><manvolnum>8</manvolnum>
</citerefentry></para>
</refsect1>