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List: linux-xfs
Subject: Re: massively truncated files with XFS with sudden power loss on
From: Christoph Hellwig <hch () infradead ! org>
Date: 2008-12-29 19:20:32
Message-ID: 20081229192032.GA30477 () infradead ! org
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On Mon, Dec 29, 2008 at 01:09:18PM -0600, Russell Cattelan wrote:
> I would have to look for sure when Dave's rewrite of the inode cache/fs
> sync code went in but
> it could be around the time of 2.6.27.
That's all in the 2.6.29 queue.
> The other thing that is odd is why files full of nulls still? xfs
> changed its behavior to write out size changes
> at flush time and not before, previously size changes would be synced
> out prior to the data being synced
> out, thus creating "null files" or rather a file with size but no extent
> data.
>
> The "null files" problem should be an "empty files" problem at worst
> now, so it is really curious that you
> are seeing null files still.
One good way would be to mount the partition with -o sync. That way
you get data integrity for all files at the epense of really sucky
performance..
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