From mboxrd@z Thu Jan  1 00:00:00 1970
From: Edward Shishkin <edward@namesys.com>
Subject: Re: External journals and NVRAM devices
Date: Sat, 02 Nov 2002 00:57:56 +0300
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To: JP Howard <jh_lists@fastmail.fm>
Cc: Andreas Dilger <adilger@clusterfs.com>, ReiserFS List <reiserfs-list@namesys.com>, green@namesys.com

JP Howard wrote:
> 
> On Fri, 01 Nov 2002 17:30:18 +0300, "Edward Shishkin"
> <edward@namesys.com> said:
> > Yes. And the experience said that external logging brings a bit better
> > effect for this journal mode then for other ones.
> >
> > > >Is there a command to show the current journal size?
> >
> > #debugreiserfs main_device
> >
> Hmmm...
> ----
> Blocksize: 4096
> <...>
> Journal parameters:
> <...>
>         Size 8193 blocks (including 1 for journal header) (first block
>         18)
> ----
> 
> So my journal is only 32k?

Yes. Standard journal can be only 32K.

 With Ext3 I used 192MB journal in data=journal
> mode. Should I be using a size around that when using data=journal with
> ReiserFS too? Why is the default so low?--is it because the data logging
> patches don't automatically change it?

Reiserfs journal size doesn't depend on journal mode. 

> >
> > The journal size remains the same unless you specify another one by
> > reiserfstune utility.
> >
> And non-standard journal sizes don't work under 2.4, right? Or are there
> patches for this that are reasonably stable?

Yes they are. Let me specify it on next week unless Oleg will do it earlier.
Edward.