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Date: Wed, 14 Jul 2010 20:43:11 +0200
From: Christoph Hellwig <hch@lst.de>
Subject: Re: [Qemu-devel] [PATCH] Make default invocation of block drivers
	safer
Message-ID: <20100714184311.GA9383@lst.de>
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To: Anthony Liguori <aliguori@us.ibm.com>
Cc: Kevin Wolf <kwolf@redhat.com>, qemu-devel@nongnu.org, Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>

Err, strong NACK.  Please don't start messing with the contents of the
data plane, we're getting into real trouble there.  It's perfectly
valid for a guest to create an image inside an image, and with hardware
support for nested virtualization I guess this use case will become
rather common, just as it already is on S/390 with VM.