diff options
Diffstat (limited to 'man/kernel-command-line.xml')
| -rw-r--r-- | man/kernel-command-line.xml | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/man/kernel-command-line.xml b/man/kernel-command-line.xml index 78e45e66a9..7e1d408ded 100644 --- a/man/kernel-command-line.xml +++ b/man/kernel-command-line.xml @@ -125,6 +125,28 @@ </varlistentry> <varlistentry> + <term><varname>systemd.volatile=</varname></term> + <listitem> + <para>This parameter controls whether the system shall boot up in volatile mode. Takes a boolean argument, or + the special value <literal>state</literal>. If false (the default), normal boot mode is selected, the root + directory and <filename>/var</filename> are mounted as specified on the kernel command line or + <filename>/etc/fstab</filename>, or otherwise configured. If true, full state-less boot mode is selected. In + this case the root directory is mounted as volatile memory file system (<literal>tmpfs</literal>), and only + <filename>/usr</filename> is mounted from the file system configured as root device, in read-only mode. This + enables fully state-less boots were the vendor-supplied OS is used as shipped, with only default + configuration and no stored state in effect, as <filename>/etc</filename> and <filename>/var</filename> (as + well as all other resources shipped in the root file system) are reset at boot and lost on shutdown. If this + setting is set to <literal>state</literal> the root file system is mounted as usual, however + <filename>/var</filename> is mounted as a volatile memory file system (<literal>tmpfs</literal>), so that the + system boots up with the normal configuration applied, but all state reset at boot and lost at shutdown. For details, + see + <citerefentry><refentrytitle>systemd-volatile-root.service</refentrytitle><manvolnum>8</manvolnum></citerefentry> + and + <citerefentry><refentrytitle>systemd-fstab-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para> + </listitem> + </varlistentry> + + <varlistentry> <term><varname>quiet</varname></term> <listitem> <para>Parameter understood by both the kernel and the system @@ -382,6 +404,7 @@ <citerefentry><refentrytitle>systemd-cryptsetup-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>, <citerefentry><refentrytitle>systemd-fstab-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>, <citerefentry><refentrytitle>systemd-gpt-auto-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>, + <citerefentry><refentrytitle>systemd-volatile-root.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, <citerefentry><refentrytitle>systemd-modules-load.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, <citerefentry><refentrytitle>systemd-backlight@.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, <citerefentry><refentrytitle>systemd-rfkill.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, |