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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 02:25:50 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 02:25:50 +0000 |
commit | 19f4f86bfed21c5326ed2acebe1163f3a83e832b (patch) | |
tree | d59b9989ce55ed23693e80974d94c856f1c2c8b1 /man/systemd-volatile-root.service.xml | |
parent | Initial commit. (diff) | |
download | systemd-19f4f86bfed21c5326ed2acebe1163f3a83e832b.tar.xz systemd-19f4f86bfed21c5326ed2acebe1163f3a83e832b.zip |
Adding upstream version 241.upstream/241upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | man/systemd-volatile-root.service.xml | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/man/systemd-volatile-root.service.xml b/man/systemd-volatile-root.service.xml new file mode 100644 index 0000000..651832f --- /dev/null +++ b/man/systemd-volatile-root.service.xml @@ -0,0 +1,55 @@ +<?xml version="1.0"?> +<!--*-nxml-*--> +<!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-volatile-root.service"> + + <refentryinfo> + <title>systemd-volatile-root.service</title> + <productname>systemd</productname> + </refentryinfo> + + <refmeta> + <refentrytitle>systemd-volatile-root.service</refentrytitle> + <manvolnum>8</manvolnum> + </refmeta> + + <refnamediv> + <refname>systemd-volatile-root.service</refname> + <refname>systemd-volatile-root</refname> + <refpurpose>Make the root file system volatile</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <para><filename>systemd-volatile-root.service</filename></para> + <para><filename>/usr/lib/systemd/systemd-volatile-root</filename></para> + </refsynopsisdiv> + + <refsect1> + <title>Description</title> + + <para><filename>systemd-volatile-root.service</filename> is a service that replaces the root directory with a + volatile memory file system (<literal>tmpfs</literal>), mounting the original (non-volatile) + <filename>/usr</filename> inside it read-only. This way, vendor data from <filename>/usr</filename> is available as + usual, but all configuration data in <filename>/etc</filename>, all state data in <filename>/var</filename> and all + other resources stored directly under the root directory are reset on boot and lost at shutdown, enabling fully + stateless systems.</para> + + <para>This service is only enabled if full volatile mode is selected, for example by specifying + <literal>systemd.volatile=yes</literal> on the kernel command line. This service runs only in the initial RAM disk + ("initrd"), before the system transitions to the host's root directory. Note that this service is not used if + <literal>systemd.volatile=state</literal> is used, as in that mode the root directory is non-volatile.</para> + </refsect1> + + <refsect1> + <title>See Also</title> + <para> + <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, + <citerefentry><refentrytitle>systemd-fstab-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>, + <citerefentry><refentrytitle>kernel-command-line</refentrytitle><manvolnum>7</manvolnum></citerefentry> + </para> + </refsect1> + +</refentry> |