diff options
| author | Lennart Poettering <lennart@poettering.net> | 2015-11-11 12:59:09 +0100 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2015-11-11 13:39:18 +0100 |
| commit | 94b6551662e0db8eb09768ed70f77759f322b4c6 (patch) | |
| tree | 6c49b11d5b62d68094dabc71b5a0634da6312ffc /man/journalctl.xml | |
| parent | 404f08d341c6fcd5f28664902adefd069f2082cd (diff) | |
journalctl: add new --sync switch for syncing the journal to disk
With this new "--sync" switch we add a synchronous way to sync
everything queued to disk, and return only after that's complete. This
command gives the guarantee that anything queued before has hit the disk
before the command returns.
While we are at it, also improve the man pages and help text for
journalctl a bit.
Diffstat (limited to 'man/journalctl.xml')
| -rw-r--r-- | man/journalctl.xml | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/man/journalctl.xml b/man/journalctl.xml index a3192539dc..2160f3cba2 100644 --- a/man/journalctl.xml +++ b/man/journalctl.xml @@ -773,13 +773,31 @@ </varlistentry> <varlistentry> + <term><option>--sync</option></term> + + <listitem><para>Ask the journal daemon to write all yet + unwritten journal data to the backing file system and + synchronize all journals. This call does not return until the + operation is complete. This command guarantees that any log + messages written before its invocation are safely stored on + disk at the time it returns.</para></listitem> + </varlistentry> + + <varlistentry> <term><option>--flush</option></term> <listitem><para>Asks the journal daemon to flush any log data stored in <filename>/run/log/journal</filename> into - <filename>/var/log/journal</filename>, if persistent storage is - enabled. This call does not return until the operation is - complete.</para></listitem> + <filename>/var/log/journal</filename>, if persistent storage + is enabled. This call does not return until the operation is + complete. Note that this call is idempotent: the data is only + flushed from <filename>/run/log/journal</filename> into + <filename>/var/log/journal</filename> once during system + runtime, and this command exits cleanly without executing any + operation if this has already has happened. This command + effectively guarantees that all data is flushed to + <filename>/var/log/journal</filename> at the time it + returns.</para></listitem> </varlistentry> <varlistentry> |