by
<citerefentry><refentrytitle>journalctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>'s
<option>--setup-keys</option>
- command), forward secure sealing (FSS) for
- all persistent journal files is
- enabled.</para></listitem>
+ command), forward secure sealing (FSS)
+ for all persistent journal files is
+ enabled. FSS is based on <ulink
+ url="http://eprint.iacr.org/2013/397">Seekable
+ Sequential Key Generators</ulink> by
+ G. A. Marson and B. Poettering and
+ may be used to protect journal files
+ from unnoticed
+ alteration.</para></listitem>
</varlistentry>
<varlistentry>
messages is generated. This rate
limiting is applied per-service, so
that two services which log do not
- interfere with each others'
+ interfere with each other's
limits. Defaults to 200 messages in
10s. The time specification for
<varname>RateLimitInterval=</varname>
while the former apply if persistent
logging is enabled and the system is
fully booted
- up. <varname>SystemMaxUse=</varname>
+ up. <command>journalctl</command> and
+ <command>systemd-journald</command>
+ ignore all files with names not ending
+ with <literal>.journal</literal> or
+ <literal>.journal~</literal>, so only
+ such files, located in the appropriate
+ directories, are taken into account
+ when calculating current disk usage.
+ </para>
+
+ <para><varname>SystemMaxUse=</varname>
and <varname>RuntimeMaxUse=</varname>
control how much disk space the
journal may use up at
configured in
<varname>SystemMaxUse=</varname> and
<varname>RuntimeMaxUse=</varname> is
- available. Defaults to 5% of the size
+ available. Defaults to 15% of the size
of the respective file
system. <varname>SystemMaxFileSize=</varname>
and
that usually seven rotated journal
files are kept as history. Specify
values in bytes or use K, M, G, T, P,
- E as units for the specified
- sizes. Note that size limits are
- enforced synchronously to journal
- files as they are extended, and need
- no explicit rotation step triggered by
- time.</para></listitem>
+ E as units for the specified sizes
+ (equal to 1024, 1024²,... bytes).
+ Note that size limits are enforced
+ synchronously when journal files
+ are extended, and no explicit
+ rotation step triggered by
+ time is needed.</para></listitem>
</varlistentry>
<varlistentry>
seconds. </para></listitem>
</varlistentry>
+
+ <varlistentry>
+ <term><varname>SyncIntervalSec=</varname></term>
+
+ <listitem><para>The timeout before syncing journal
+ data to disk. After syncing journal files have
+ OFFLINE state. Default timeout is 5 minutes.
+ </para></listitem>
+ </varlistentry>
+
<varlistentry>
<term><varname>ForwardToSyslog=</varname></term>
<term><varname>ForwardToKMsg=</varname></term>
<citerefentry><refentrytitle>systemd-journald.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
<citerefentry><refentrytitle>journalctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd.journal-fields</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ <citerefentry><refentrytitle>systemd-system.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>
</para>
</refsect1>