diff options
Diffstat (limited to 'man')
| -rw-r--r-- | man/journalctl.xml | 57 |
1 files changed, 28 insertions, 29 deletions
diff --git a/man/journalctl.xml b/man/journalctl.xml index 5102dcdd39..d7e99d4251 100644 --- a/man/journalctl.xml +++ b/man/journalctl.xml @@ -749,32 +749,28 @@ <term><option>--vacuum-time=</option></term> <term><option>--vacuum-files=</option></term> - <listitem><para>Removes the oldest archived journal files until the disk - space they use falls below the specified size (specified with - the usual <literal>K</literal>, <literal>M</literal>, - <literal>G</literal> and <literal>T</literal> suffixes), or all - archived journal files contain no data older than the specified - timespan (specified with the usual <literal>s</literal>, - <literal>m</literal>, <literal>h</literal>, - <literal>days</literal>, <literal>months</literal>, - <literal>weeks</literal> and <literal>years</literal> suffixes), - or no more than the specified number of separate journal files - remain. Note that running <option>--vacuum-size=</option> has - only an indirect effect on the output shown by - <option>--disk-usage</option>, as the latter includes active - journal files, while the vacuuming operation only operates - on archived journal files. Similarly, - <option>--vacuum-files=</option> might not actually reduce the - number of journal files to below the specified number, as it - will not remove active journal - files. <option>--vacuum-size=</option>, - <option>--vacuum-time=</option> and - <option>--vacuum-files=</option> may be combined in a single - invocation to enforce any combination of a size, a time and a - number of files limit on the archived journal - files. Specifying any of these three parameters as zero is - equivalent to not enforcing the specific limit, and is thus - redundant.</para></listitem> + <listitem><para>Removes the oldest archived journal files until the disk space they use falls below the + specified size (specified with the usual <literal>K</literal>, <literal>M</literal>, <literal>G</literal> and + <literal>T</literal> suffixes), or all archived journal files contain no data older than the specified timespan + (specified with the usual <literal>s</literal>, <literal>m</literal>, <literal>h</literal>, + <literal>days</literal>, <literal>months</literal>, <literal>weeks</literal> and <literal>years</literal> + suffixes), or no more than the specified number of separate journal files remain. Note that running + <option>--vacuum-size=</option> has only an indirect effect on the output shown by + <option>--disk-usage</option>, as the latter includes active journal files, while the vacuuming operation only + operates on archived journal files. Similarly, <option>--vacuum-files=</option> might not actually reduce the + number of journal files to below the specified number, as it will not remove active journal + files.</para> + + <para><option>--vacuum-size=</option>, <option>--vacuum-time=</option> and <option>--vacuum-files=</option> + may be combined in a single invocation to enforce any combination of a size, a time and a number of files limit + on the archived journal files. Specifying any of these three parameters as zero is equivalent to not enforcing + the specific limit, and is thus redundant.</para> + + <para>These three switches may also be combined with <option>--rotate</option> into one command. If so, all + active files are rotated first, and the requested vacuuming operation is executed right after. The rotation has + the effect that all currently active files are archived (and potentially new, empty journal files opened as + replacement), and hence the vacuuming operation has the greatest effect as it can take all log data written so + far into account.</para></listitem> </varlistentry> <varlistentry> @@ -896,9 +892,12 @@ <varlistentry> <term><option>--rotate</option></term> - <listitem><para>Asks the journal daemon to rotate journal - files. This call does not return until the rotation operation - is complete.</para></listitem> + <listitem><para>Asks the journal daemon to rotate journal files. This call does not return until the rotation + operation is complete. Journal file rotation has the effect that all currently active journal files are marked + as archived and renamed, so that they are never written to in future. New (empty) journal files are then + created in their place. This operation may be combined with <option>--vacuum-size=</option>, + <option>--vacuum-time=</option> and <option>--vacuum-file=</option> into a single command, see + above.</para></listitem> </varlistentry> <xi:include href="standard-options.xml" xpointer="help" /> |