mirror of
https://github.com/systemd/systemd
synced 2024-07-21 18:24:38 +00:00
0c69794138
These lines are generally out-of-date, incomplete and unnecessary. With SPDX and git repository much more accurate and fine grained information about licensing and authorship is available, hence let's drop the per-file copyright notice. Of course, removing copyright lines of others is problematic, hence this commit only removes my own lines and leaves all others untouched. It might be nicer if sooner or later those could go away too, making git the only and accurate source of authorship information.
65 lines
2.6 KiB
XML
65 lines
2.6 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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SPDX-License-Identifier: LGPL-2.1+
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-->
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<refentry id="systemd-volatile-root.service">
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<refentryinfo>
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<title>systemd-volatile-root.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-volatile-root.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-volatile-root.service</refname>
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<refname>systemd-volatile-root</refname>
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<refpurpose>Make the root file system volatile</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<para><filename>systemd-volatile-root.service</filename></para>
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<para><filename>/usr/lib/systemd/systemd-volatile-root</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-volatile-root.service</filename> is a service that replaces the root directory with a
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volatile memory file system (<literal>tmpfs</literal>), mounting the original (non-volatile)
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<filename>/usr</filename> inside it read-only. This way, vendor data from <filename>/usr</filename> is available as
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usual, but all configuration data in <filename>/etc</filename>, all state data in <filename>/var</filename> and all
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other resources stored directly under the root directory are reset on boot and lost at shutdown, enabling fully
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stateless systems.</para>
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<para>This service is only enabled if full volatile mode is selected, for example by specifying
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<literal>systemd.volatile=yes</literal> on the kernel command line. This service runs only in the initial RAM disk
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("initrd"), before the system transitions to the host's root directory. Note that this service is not used if
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<literal>systemd.volatile=state</literal> is used, as in that mode the root directory is non-volatile.</para>
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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><refentrytitle>systemd-fstab-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>kernel-command-line</refentrytitle><manvolnum>7</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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