linux-ext4 - Re: [PATCH RFC] ext3 data=guarded v3

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Message-Id: <1239893771.4346.0.camel@think.oraclecorp.com>
Date:	Thu, 16 Apr 2009 10:56:11 -0400
From:	Chris Mason <chris.mason@...cle.com>
To:	Mike Galbraith <efault@....de>
Cc:	Jan Kara <jack@...e.cz>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"Theodore Ts'o" <tytso@....edu>,
	Linux Kernel Developers List <linux-kernel@...r.kernel.org>,
	Ext4 Developers List <linux-ext4@...r.kernel.org>
Subject: Re: [PATCH RFC] ext3 data=guarded v3

On Thu, 2009-04-16 at 13:39 +0200, Mike Galbraith wrote:
> On Wed, 2009-04-15 at 13:22 -0400, Chris Mason wrote:
> > Hello everyone,
> 
> Greetings,
> 
> > This passed a longer stress test and generally seems to be working.  I
> > don't think anyone would recommend it as a default for 2.6.30, but it
> > may be a good idea to have a review party and decide if it is safe enough
> > to include so people can experiment with it.
> 
> I know you didn't say RFT, but I did some anyway, and found a 100%
> repeatable corruption scenario wrt git+umount.
> 

Well, that's a surprise.  I can trigger it here too, trying to figure
out how this is different from the fsx and fsstress hammering.  It looks
like git is just going good old fashioned writes, so I must be losing
one or two of them.

-chris


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