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Diffstat (limited to 'man/systemd-nspawn.xml')
| -rw-r--r-- | man/systemd-nspawn.xml | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/man/systemd-nspawn.xml b/man/systemd-nspawn.xml index 950558feec..cb0605bcd1 100644 --- a/man/systemd-nspawn.xml +++ b/man/systemd-nspawn.xml @@ -644,6 +644,49 @@ of the container OS itself.</para></listitem> </varlistentry> + <varlistentry> + <term><option>--volatile</option><replaceable>=MODE</replaceable></term> + + <listitem><para>Boots the container in + volatile (ephemeral) mode. When no + mode parameter is passed or when mode + is specified as <literal>yes</literal> + full volatile mode is enabled. This + means the root directory is mounted as + mostly unpopulated + <literal>tmpfs</literal> instance, and + <filename>/usr</filename> from the OS + tree is mounted into it, read-only + (the system thus starts up with + read-only OS resources, but pristine + state and configuration, any changes + to the either are lost on + shutdown). When the mode parameter is + specified as <literal>state</literal> + the OS tree is mounted read-only, but + <filename>/var</filename> is mounted + as <literal>tmpfs</literal> instance + into it (the system thus starts up + with read-only OS resources and + configuration, but prestine state, any + changes to the latter are lost on + shutdown). When the mode parameter is + specified as <literal>no</literal> + (the default) the whole OS tree is made + available writable.</para> + + <para>Note that setting this to + <literal>yes</literal> or + <literal>state</literal> will only + work correctly with operating systems + in the container that can boot up with + only <filename>/usr</filename> + mounted, and are able to populate + <filename>/var</filename> + automatically, as + needed.</para></listitem> + </varlistentry> + <xi:include href="standard-options.xml" xpointer="help" /> <xi:include href="standard-options.xml" xpointer="version" /> </variablelist> |