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Date: Thu, 21 Oct 2010 09:45:25 +0200
From: Paolo Bonzini <pbonzini@redhat.com>
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Subject: Re: [Qemu-devel] KVM call minutes for Oct 19
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To: Alexander Graf <agraf@suse.de>
Cc: Chris Wright <chrisw@redhat.com>, "kvm@vger.kernel.org" <kvm@vger.kernel.org>, "dlaor@redhat.com" <dlaor@redhat.com>, "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>

On 10/21/2010 03:14 AM, Alexander Graf wrote:
>> I agree that some agent code for basic stuff like live snapshot
>> sync with the filesystem is small enough and worth to host within
>> qemu. Maybe we do need more than one project?
>
> No, please. That's exactly what I don't want to see. The
> libvirt/qemu/virt-man split is killing us already. How is this going
> to become with 20 driver packs for the guest?

Agreed.  Not relying on Mata Hari and reinventing a dbus/WMI interface 
would be yet another case of QEMU NIH.  The same argument also works on 
the backend BTW, it can be virtio serial but also a Xen pvconsole and 
that wheel should not be reinvented either.

The guest agent should be a pluggable architecture, and QEMU can provide 
plugins for sync, spice, "info balloon" and everything else it needs.

Paolo