turning off journaling on the fly?

Theodore Ts'o tytso at mit.edu
Tue Sep 20 21:25:55 UTC 2005

On Sat, Sep 17, 2005 at 05:27:18PM +0200, myLC at gmx.net wrote:
> Dear penguin lovers, =)
> I'm running Linux (2.6) on a satellite receiver with
> harddrive. The latter is formated in ext3.
> So far, everthing works fine.
> Now here's the small problem:
> The receiver is in the same room I sleep in and when it
> records at night time I can hear the journaling going on
> (heads clicking - even though the HD is set to silent mode
> via hdparm). This is surely due to the journaling as during
> playback the heads remain quiet.

Something on your system must be causing writes to the filesystem;
turning off journaling might lower the total number of writes, but it
won't make this problem go away altogether.

I'd check /var/log to see what might be causing log messages (the most
likely cause) and see if you can disable or lower the syslog threshold
so that they don't get written to disk.

						- Ted

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