necessary. All objects stored in the journal can be up
to 2^64-1 bytes in size.</para>
- <para>By default the journal stores log data in
+ <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 persistent, it
directory.</para>
</refsect1>
+ <refsect1>
+ <title>Files</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><filename>/etc/systemd/journald.conf</filename></term>
+
+ <listitem><para>Configure
+ <command>systemd-journald</command>
+ behaviour. See
+ <citerefentry><refentrytitle>journald.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
+ </para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><filename>/run/log/journal/<replaceable>machine-id</replaceable>/*.journal</filename></term>
+ <term><filename>/run/log/journal/<replaceable>machine-id</replaceable>/*.journal~</filename></term>
+ <term><filename>/var/log/journal/<replaceable>machine-id</replaceable>/*.journal</filename></term>
+ <term><filename>/var/log/journal/<replaceable>machine-id</replaceable>/*.journal~</filename></term>
+
+ <listitem><para><command>systemd-journald</command>
+ writes entries to files in
+ <filename>/run/log/journal/<replaceable>machine-id</replaceable>/</filename>
+ or
+ <filename>/var/log/journal/<replaceable>machine-id</replaceable>/</filename>
+ with the <literal>.journal</literal>
+ suffix. If the daemon is stopped
+ uncleanly, or if the files are found
+ to be corrupted, they are renamed
+ using the <literal>.journal~</literal>
+ suffix, and
+ <command>systemd-journald</command>
+ starts writing to a new
+ file. <filename>/run</filename> is
+ used when
+ <filename>/var/log/journal</filename>
+ is not available, or when
+ <option>Storage=volatile</option> is
+ set in the
+ <citerefentry><refentrytitle>journald.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ configuration file.
+ </para></listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
<refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>journald.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd.journal-fields</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd-journal</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>setfacl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
+ <citerefentry><refentrytitle>setfacl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <command>pydoc systemd.journal</command>.
</para>
</refsect1>