-<?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*-->
+<?xml version='1.0'?>
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+<!-- SPDX-License-Identifier: LGPL-2.1+ -->
<refentry id="systemd-udevd.service"
xmlns:xi="http://www.w3.org/2001/XInclude">
<refentryinfo>
<title>systemd-udevd.service</title>
<productname>systemd</productname>
- <authorgroup>
- <author>
- <contrib>Developer</contrib>
- <firstname>Kay</firstname>
- <surname>Sievers</surname>
- <email>kay@vrfy.org</email>
- </author>
- </authorgroup>
</refentryinfo>
<refmeta>
<refsect1><title>Options</title>
<variablelist>
<varlistentry>
+ <term><option>-d</option></term>
<term><option>--daemon</option></term>
<listitem>
<para>Detach and run in the background.</para>
</varlistentry>
<varlistentry>
+ <term><option>-D</option></term>
<term><option>--debug</option></term>
<listitem>
<para>Print debug messages to standard error.</para>
</varlistentry>
<varlistentry>
+ <term><option>-c=</option></term>
<term><option>--children-max=</option></term>
<listitem>
<para>Limit the number of events executed in parallel.</para>
</varlistentry>
<varlistentry>
+ <term><option>-e=</option></term>
<term><option>--exec-delay=</option></term>
<listitem>
<para>Delay the execution of <varname>RUN</varname>
</varlistentry>
<varlistentry>
+ <term><option>-t=</option></term>
<term><option>--event-timeout=</option></term>
<listitem>
<para>Set the number of seconds to wait for events to finish. After
</varlistentry>
<varlistentry>
+ <term><option>-N=</option></term>
<term><option>--resolve-names=</option></term>
<listitem>
<para>Specify when systemd-udevd should resolve names of users and groups.
</listitem>
</varlistentry>
- <varlistentry>
- <term><option>--help</option></term>
-
- <xi:include href="standard-options.xml" xpointer="help-text" />
- </varlistentry>
+ <xi:include href="standard-options.xml" xpointer="help" />
<xi:include href="standard-options.xml" xpointer="version" />
</variablelist>
</refsect1>
<para>Parameters starting with "rd." will be read when
<command>systemd-udevd</command> is used in an initrd.</para>
<varlistentry>
- <term><varname>udev.log-priority=</varname></term>
- <term><varname>rd.udev.log-priority=</varname></term>
+ <term><varname>udev.log_priority=</varname></term>
+ <term><varname>rd.udev.log_priority=</varname></term>
<listitem>
<para>Set the log level.</para>
</listitem>
</varlistentry>
<varlistentry>
- <term><varname>udev.children-max=</varname></term>
- <term><varname>rd.udev.children-max=</varname></term>
+ <term><varname>udev.children_max=</varname></term>
+ <term><varname>rd.udev.children_max=</varname></term>
<listitem>
<para>Limit the number of events executed in parallel.</para>
</listitem>
</varlistentry>
<varlistentry>
- <term><varname>udev.exec-delay=</varname></term>
- <term><varname>rd.udev.exec-delay=</varname></term>
+ <term><varname>udev.exec_delay=</varname></term>
+ <term><varname>rd.udev.exec_delay=</varname></term>
<listitem>
<para>Delay the execution of <varname>RUN</varname> instructions by the given
number of seconds. This option might be useful when
</listitem>
</varlistentry>
<varlistentry>
- <term><varname>udev.event-timeout=</varname></term>
- <term><varname>rd.udev.event-timeout=</varname></term>
+ <term><varname>udev.event_timeout=</varname></term>
+ <term><varname>rd.udev.event_timeout=</varname></term>
<listitem>
<para>Wait for events to finish up to the given number
of seconds. This option might be useful if events are
when possible. It is enabled by default; specifying 0 disables it.</para>
</listitem>
</varlistentry>
+ <varlistentry>
+ <term><varname>net.naming-scheme=</varname></term>
+ <listitem>
+ <para>Network interfaces are renamed to give them predictable names when possible (unless
+ <varname>net.ifnames=0</varname> is specified, see above). The names are derived from various
+ device metadata fields. Newer versions of <filename>systemd-udevd.service</filename> take more of
+ these fields into account, improving (and thus possibly changing) the names used for the same
+ devices. With this kernel command line option it is possible to pick a specific version of this
+ algorithm. It expects a naming scheme identifier as argument. Currently the following identifiers
+ are known: <literal>v238</literal>, <literal>v239</literal>, <literal>v240</literal> which each
+ implement the naming scheme that was the default in the indicated systemd version. In addition,
+ <literal>latest</literal> may be used to designate the latest scheme known (to this particular
+ version of <filename>systemd-udevd.service</filename>).</para>
+
+ <para>Note that selecting a specific scheme is not sufficient to fully stabilize interface naming:
+ the naming is generally derived from driver attributes exposed by the kernel. As the kernel is
+ updated, previously missing attributes <filename>systemd-udevd.service</filename> is checking might
+ appear, which affects older name derivation algorithms, too.</para>
+ </listitem>
+ </varlistentry>
</variablelist>
<!-- when adding entries here, consider also adding them
in kernel-command-line.xml -->
projects / thirdparty / systemd.git / blobdiff