linux-ext4 - Re: What happened to data=guarded?

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Message-ID: <20090811185703.GQ1756@mit.edu>
Date:	Tue, 11 Aug 2009 14:57:03 -0400
From:	Theodore Tso <tytso@....edu>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Frans Pop <elendil@...net.nl>,
	Chris Mason <chris.mason@...cle.com>, jack@...e.cz,
	linux-kernel@...r.kernel.org, linux-ext4@...r.kernel.org
Subject: Re: What happened to data=guarded?

On Tue, Aug 11, 2009 at 05:29:14PM +0200, Andi Kleen wrote:
> > Good to hear. I've so far stayed with data=ordered as I think I'd prefer 
> > data=guarded over data=writeback. I'll certainly give it a try when it's 
> > available.
> 
> Same here. data=writeback already cost me a few files after crashes here :/

What sort of files were you losing?  I don't know if we can improve
the implied flush hueristics, but we should at least try to see if we
do something about it.

						- Ted
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