<para>By default the journal stores log data in
<filename>/run/log/journal/</filename>. Since
<filename>/run/</filename> is volatile log data is
- lost at reboot. To make the data persistant it
+ lost at reboot. To make the data persistent it
is sufficient to create
<filename>/var/log/journal/</filename> where
<filename>systemd-journald</filename> will then store
service.</para>
</refsect1>
+ <refsect1>
+ <title>Signals</title>
+
+ <variablelist>
+ <varlistentry>
+ <term>SIGUSR1</term>
+
+ <listitem><para>Request that journal
+ data from <filename>/run/</filename>
+ is flushed to
+ <filename>/var/</filename> in order to
+ make it persistent (if this is
+ enabled). This may be used after
+ <filename>/var/</filename> is mounted,
+ but is generally not required since
+ the first journal write when
+ <filename>/var/</filename> becomes
+ writable triggers the flushing
+ anyway.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>SIGUSR2</term>
+
+ <listitem><para>Request immediate
+ rotation of the journal
+ files.</para></listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+
+
<refsect1>
<title>See Also</title>
<para>