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

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Date:	Thu, 16 Apr 2009 20:00:37 +0200
From:	Mike Galbraith <efault@....de>
To:	Chris Mason <chris.mason@...cle.com>
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 10:56 -0400, Chris Mason wrote:
> 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.

Yeah, I spent 6 hours doing a lot of this and that, and all was peachy.
This was the only hiccup, and I totally accidentally hit it.

	-Mike

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