From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ric Wheeler Subject: Re: [2.6.30 and later] file corruption on ext3 filesystem. Date: Mon, 11 Jan 2010 15:13:24 -0500 Message-ID: <4B4B8664.6000200@redhat.com> References: <201001080254.o082sOXB018423@www262.sakura.ne.jp> <20100108123641.GB8654@discord.disaster> <201001082215.EJH52647.JLtFSFFVQOHMOO@I-love.SAKURA.ne.jp> <20100108151915.GC8654@discord.disaster> <201001091153.FAC21374.OFOFMJQVOSFLtH@I-love.SAKURA.ne.jp> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: david@fromorbit.com, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org To: Tetsuo Handa Return-path: In-Reply-To: <201001091153.FAC21374.OFOFMJQVOSFLtH@I-love.SAKURA.ne.jp> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org On 01/08/2010 09:53 PM, Tetsuo Handa wrote: > Dave Chinner wrote: > >> I agree that it is very wrong, but it's a known problem with writeback >> mode in ext3: >> >> http://thread.gmane.org/gmane.linux.kernel/818044/focus=819977 >> >> More info as to how this change came about and the proposed but not >> yet realised fixes: >> >> http://lwn.net/Articles/328363/ >> > Thank you for the pointer. > > Indeed, most Linux boxes are used by single user. > But implicitly importing other deleted file's data is still annoying > even if the box is used by only one user. > > When I was trying to identify the steps to reproduce, I got ./a.out replaced > by the deleted .bash_history due to power failure. I executed ./a.out as root > without knowing that the file contains deleted .bash_history , and many > commands listed in deleted .bash_history are executed as root. > I thought my box was cracked and trojaned. :-( > Fedora and some other distributions changed the default back to data ordered mode in order to avoid exactly this kind of mess. Even if you are on a single user system, this behavior is certainly unexpected for most users :-) Ric