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Re: [Qemu-devel] Spice project is now open
From: |
Mark McLoughlin |
Subject: |
Re: [Qemu-devel] Spice project is now open |
Date: |
Fri, 11 Dec 2009 19:45:33 +0000 |
On Fri, 2009-12-11 at 13:38 -0600, Anthony Liguori wrote:
> Mark McLoughlin wrote:
> > On Fri, 2009-12-11 at 13:04 -0600, Anthony Liguori wrote:
> >
> >> But to introduce another protocol where a user has to make a choice to
> >> use Spice over VNC, I think we need a really good justification for
> >> that. It's really about complexity. A user shouldn't have to know
> >> about Spice or VNC. They shouldn't have to contemplate the trade-offs
> >> of whether their management tool is aware or not. It should Just Work.
> >>
> >
> > That's a good goal.
> >
> > If we add a new protocol, we could achieve the same thing by allowing
> > qemu support both VNC and Spice at runtime. Then you just need a client
> > like virt-viewer that can handle both protocols, and old VNC clients
> > will continue to be able to connect to newer qemu.
> >
>
> Supporting them at the same time could be potentially challenging. You
> would need to render Spice locally in qemu in order to expose it via vnc.
>
> Another nasty bit is that two protocols mean two different sets of
> authentication mechanisms. Does Spice support SASL based
> authentication? Could it make sense to essentially tunnel Spice through
> vnc in order to reuse the existing authentication infrastructure?
I don't doubt there are challenges.
I think your requirement that old clients work with new servers and new
clients work with old servers is a good one. Maybe extending VNC is the
best way to get there, but it should be recognized there is another way
of achieving the same thing if Spice does require a new protocol.
The underlying goal is getting lost in the "Spice can't be a VNC
extension" discussion :-)
Cheers,
Mark.
- Re: [Qemu-devel] Re: Spice project is now open, (continued)
- Re: [Qemu-devel] Re: Spice project is now open, Andrea Arcangeli, 2009/12/12
- Re: [Qemu-devel] Re: Spice project is now open, Anthony Liguori, 2009/12/12
- Re: [Qemu-devel] Re: Spice project is now open, Andrea Arcangeli, 2009/12/12
- Re: [Qemu-devel] Re: Spice project is now open, Anthony Liguori, 2009/12/12
- Re: [Qemu-devel] Re: Spice project is now open, Izik Eidus, 2009/12/13
- Re: [Qemu-devel] Re: Spice project is now open, Soeren Sandmann, 2009/12/15
- Re: [Qemu-devel] Spice project is now open, Mark McLoughlin, 2009/12/11
- Re: [Qemu-devel] Spice project is now open, Anthony Liguori, 2009/12/11
- Re: [Qemu-devel] Spice project is now open,
Mark McLoughlin <=
- Re: [Qemu-devel] Spice project is now open, Anthony Liguori, 2009/12/11
Re: [Qemu-devel] Spice project is now open, Yaniv Kamay, 2009/12/11
Re: [Qemu-devel] Spice project is now open, Yaniv Kamay, 2009/12/11