linux-ext4 - Re: zero out blocks of freed user data for operation a virtual machine environment

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Message-Id: <200905250748.n4P7mbQS024844@tiffany.internal.tigress.co.uk>
Date:	Mon, 25 May 2009 08:48:37 +0100
From:	Ron Yorston <rmy@...ress.co.uk>
To:	tytso@...nk.org, thomas@...nzmann.de
Cc:	linux-kernel@...r.kernel.org, linux-ext4@...r.kernel.org
Subject: Re: zero out blocks of freed user data for operation a virtual
 machine environment

I've written a tool to zero freed blocks in ext2/ext3 filesystems, as well
as a (half-baked) kernel patch.  Details here:

   http://intgat.tigress.co.uk/rmy/uml/sparsify.html

Ron
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