From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jamie Lokier <jamie@shareable.org>
Subject: Re: [Qemu-devel] [RFC] Disk integrity in QEMU
Date: Sun, 12 Oct 2008 16:35:46 +0100
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Cc: Chris Wright <chrisw@redhat.com>,
	Mark McLoughlin <markmc@redhat.com>,
	Ryan Harper <ryanh@us.ibm.com>,
	kvm-devel <kvm@vger.kernel.org>,
	Laurent Vivier <Laurent.Vivier@bull.net>
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Dor Laor wrote:
> Actually this is what happens on mainline qemu with cache=off.

Have I understood right that cache=off on a qcow2 image only uses
O_DIRECT for the leaf image, and the chain of base images don't use
O_DIRECT?

Sometimes on a memory constrained host, where the (collective) guest
memory is nearly as big as the host memory, I'm not sure this is what
I want.

-- Jamie