From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932560AbZACWEz (ORCPT ); Sat, 3 Jan 2009 17:04:55 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759742AbZACWEq (ORCPT ); Sat, 3 Jan 2009 17:04:46 -0500 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:46792 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759634AbZACWEp (ORCPT ); Sat, 3 Jan 2009 17:04:45 -0500 Date: Sat, 3 Jan 2009 23:06:38 +0100 From: Pavel Machek To: Martin =?utf-8?Q?MOKREJ=C5=A0?= Cc: kernel list , Andrew Morton , tytso@mit.edu, mtk.manpages@gmail.com, rdunlap@xenotime.net, linux-doc@vger.kernel.org Subject: Re: document ext3 requirements Message-ID: <20090103220638.GF1666@elf.ucw.cz> References: <20090103123813.GA1512@ucw.cz> <495FD5D7.2040907@ribosome.natur.cuni.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <495FD5D7.2040907@ribosome.natur.cuni.cz> X-Warning: Reading this can be dangerous to your mental health. User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat 2009-01-03 22:17:11, Martin MOKREJŠ wrote: > Can one avoid replay of the journal then if it would be unclean? > Just curious. Well, mounting unclean filesystem is dangerous but depending on circumstances, it may be better than writing to the filesystems. (You may not be able to read some data and may provoke kernel bugs, but at least you don't damage what is on disk. If you are collecting evidence -- not writing is very important. If you suspect something is very wrong with the drive, not writing is good idea). Pavel > > Pavel Machek wrote: > > Using ext3 is only safe if storage subsystem meets certain > > criteria. Document those. > > > > Errors=remount-ro is documented as default, but superblock setting > > overrides that and mkfs defaults to errors=continue... so the default > > is errors=continue in practice. > > > > readonly mount does actually write to the media in some cases. Document that. > > > > Signed-off-by: Pavel Machek > > > > diff --git a/Documentation/filesystems/ext3.txt b/Documentation/filesystems/ext3.txt -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html