From mboxrd@z Thu Jan 1 00:00:00 1970 From: Edward Shishkin Subject: Re: External journals and NVRAM devices Date: Sat, 02 Nov 2002 00:58:40 +0300 Sender: edward Message-ID: <3DC2F910.DF56232D@namesys.com> References: <20021101203805.C5E7245609B@server5.fastmail.fm> <3DC2F8E4.AD84886F@namesys.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: list-help: list-unsubscribe: list-post: Errors-To: flx@namesys.com List-Id: Content-Type: text/plain; charset="us-ascii" To: JP Howard , Andreas Dilger , ReiserFS List , green@namesys.com Edward Shishkin wrote: > > JP Howard wrote: > > > > On Fri, 01 Nov 2002 17:30:18 +0300, "Edward Shishkin" > > 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. Sorry, 32M! > > 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.