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References: <4ae3c14050424182235f916d7@mail.gmail.com>
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Cc: linux-kernel@vger.kernel.org
From: Kyle Moffett <mrmacman_g4@mac.com>
Subject: Re: Ext3+ramdisk journaling problem
Date: Sun, 24 Apr 2005 22:30:35 -0400
To: Xin Zhao <uszhaoxin@gmail.com>
Sender: linux-kernel-owner@vger.kernel.org
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On Apr 24, 2005, at 21:22, Xin Zhao wrote:
> hi,
>
> I used ramdisk as an ext3 journal and mount ext3 file system with
> option data=journal. It worked fine and speedup the ext3 file system.

Uhh, the whole point of a journal is that when the computer goes down
hard and doesn't have a chance to clean up.  If you put the journal on
a ramdisk, you might as well just mount it as an ext2 filesystem and
be done with it.  Without the journal _on_disk_ you get no data or
filesystem reliability advantages.  If you're after speed, just forgo
the reliability or buy better disks.

Cheers,
Kyle Moffett

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