linux-kernel - Re: Fwd: EXT3 File System Corruption 2.6.34

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Message-ID: <4C115345.1060805@tmr.com>
Date:	Thu, 10 Jun 2010 17:04:05 -0400
From:	Bill Davidsen <davidsen@....com>
To:	Jeffrey Merkey <jeffmerkey@...il.com>
CC:	linux-kernel@...r.kernel.org
Subject: Re: Fwd: EXT3 File System Corruption 2.6.34

Jeffrey Merkey wrote:
> ---------- Forwarded message ----------
> From: Jeffrey Merkey <jeffmerkey@...il.com>
> Date: Mon, Jun 7, 2010 at 7:55 PM
> Subject: Re: EXT3 File System Corruption 2.6.34
> To: Eric Sandeen <sandeen@...deen.net>
> 
> 
>> On Jun 7, 2010, at 6:55 PM, Jeffrey Merkey <jeffmerkey@...il.com> wrote:
>>
>>> ---------- Forwarded message ----------
>>> From: Jeffrey Merkey <jeffmerkey@...il.com>
>>> Date: Mon, Jun 7, 2010 at 5:54 PM
>>> Subject: Re: EXT3 File System Corruption 2.6.34
>>> To: Eric Sandeen <sandeen@...deen.net>
>>>
>>>
>>> REPLY TO ALL
>>>
>>> CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set
>>>
>>> Whether set this way or not, should not see corruption.
>> Here you are mistaken.  Mount with data=ordered and see.  Writeback can
>> expose stale data.
>>
>> -Eric
>>
> 
> OK.  I will set this up.  You may want to make this option the default
> in the build scripts.  here is a corrupted file.  This was a .gif
> image file I saved THEN AFTER SAVING THE FILE I pulled the power to
> the machine and during recovery the file was FUCKED.  At any rate,
> this does not happen with 2.6.28.
> 
Having bad things happen when power is removed is not much of a surprise, and 
various options can fix that at the cost of speed. The fact that this didn't 
happen with 2.6.28 is bothersome.

I actually take some care to avoid testing behavior in this area, not my normal 
intended mode of operation.

-- 
Bill Davidsen <davidsen@....com>
   "We have more to fear from the bungling of the incompetent than from
the machinations of the wicked."  - from Slashdot
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