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Re: [Qemu-devel] Re: Live migration protocol, device features, ABIs and
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] Re: Live migration protocol, device features, ABIs and other beasts |
Date: |
Wed, 25 Nov 2009 15:42:20 +0200 |
User-agent: |
Mutt/1.5.19 (2009-01-05) |
On Wed, Nov 25, 2009 at 02:42:25PM +0100, Gerd Hoffmann wrote:
>>> And this is also the trivial part to describe: I want a
>>> machine like the one in qemu-0.11.
>>
>> Yes, but there might be a ton of reasons to want a
>> machine like the one in qemu 0.11.
>> The need to migrate to old qemu is very rare,
>> it is a completely separate decision
>> one might take long after starting qemu,
>
> Doesn't work. If you have a qemu 0.11 machine, a virtio nic and your
> guest uses MSI-X you simply can't migrate to qemu 0.10. End of story.
> If you want to be able to migrate to 0.10 you have to start in 0.10
> compat mode with MSI-X disabled. So IMHO it does makes sense to tie the
> savevm format to -M pc-<version>.
>
> cheers,
> Gerd
MSI-X is an orthogonal issue, let's not mix it in.
Maybe you are using e1000, or maybe you
disabled MSI-X with a flag.
--
MST
- [Qemu-devel] Re: Live migration protocol, device features, ABIs and other beasts, (continued)
[Qemu-devel] Re: Live migration protocol, device features, ABIs and other beasts, Juan Quintela, 2009/11/23
- Re: [Qemu-devel] Re: Live migration protocol, device features, ABIs and other beasts, Anthony Liguori, 2009/11/23
- [Qemu-devel] Re: Live migration protocol, device features, ABIs and other beasts, Juan Quintela, 2009/11/23
- [Qemu-devel] Re: Live migration protocol, device features, ABIs and other beasts, Michael S. Tsirkin, 2009/11/24
- [Qemu-devel] Re: Live migration protocol, device features, ABIs and other beasts, Juan Quintela, 2009/11/24
- [Qemu-devel] Re: Live migration protocol, device features, ABIs and other beasts, Michael S. Tsirkin, 2009/11/24
- Re: [Qemu-devel] Re: Live migration protocol, device features, ABIs and other beasts, Gerd Hoffmann, 2009/11/25
- Re: [Qemu-devel] Re: Live migration protocol, device features, ABIs and other beasts,
Michael S. Tsirkin <=
- Re: [Qemu-devel] Re: Live migration protocol, device features, ABIs and other beasts, Gerd Hoffmann, 2009/11/25
- Re: [Qemu-devel] Re: Live migration protocol, device features, ABIs and other beasts, Michael S. Tsirkin, 2009/11/25
- Re: [Qemu-devel] Re: Live migration protocol, device features, ABIs and other beasts, Gerd Hoffmann, 2009/11/25
- Re: [Qemu-devel] Re: Live migration protocol, device features, ABIs and other beasts, Andrea Arcangeli, 2009/11/26
Re: [Qemu-devel] Re: Live migration protocol, device features, ABIs and other beasts, Gerd Hoffmann, 2009/11/25
Re: [Qemu-devel] Re: Live migration protocol, device features, ABIs and other beasts, Michael S. Tsirkin, 2009/11/25
Re: [Qemu-devel] Re: Live migration protocol, device features, ABIs and other beasts, Gerd Hoffmann, 2009/11/25
Re: [Qemu-devel] Re: Live migration protocol, device features, ABIs and other beasts, Michael S. Tsirkin, 2009/11/25
[Qemu-devel] Re: Live migration protocol, device features, ABIs and other beasts, Juan Quintela, 2009/11/25
[Qemu-devel] Re: Live migration protocol, device features, ABIs and other beasts, Michael S. Tsirkin, 2009/11/25