Re: [Qemu-devel] Qemu 2.6 => Qemu 2.7 migration: error while loading state for instance 0x0 of device '0000:00:03.0/virtio-balloon'

[Stefan Priebe - Profihost AG]

Hello,

Am 15.11.2016 um 11:30 schrieb Dr. David Alan Gilbert:
> * Stefan Priebe - Profihost AG (address@hidden) wrote:
>> Hello,
>>
>> today i did a first live migration from Qemu 2.6.2 to Qemu 2.7.0. The VM
>> is running windows and virtio-balloon and with machine type pc-i440fx-2.5.
>>
>> The output of the target qemu process was:
>> kvm_apic_post_load: Yeh
>> kvm_apic_post_load: Yeh
>> kvm_apic_post_load: Yeh
>> kvm_apic_post_load: Yeh
>> kvm: VQ 2 size 0x80 < last_avail_idx 0x1 - used_idx 0x4
>> kvm: error while loading state for instance 0x0 of device
>> '0000:00:03.0/virtio-balloon'
>> kvm: load of migration failed: Operation not permitted
> 
> Yes that's a known bug; only seems to affect windows guests, and I believe
> doesn't even need to cross versions.
> 
> There's a bunch of fixes that Stefan applied to virtio code
> that I think fix this; I see that he cc'd qemu-stable.
> I think it's 4b7f91ed, but I'm not sure if there are others needed.

thanks for pointing to that commit.

Stefan can you tell me whether it's enough to cherry-pick 4b7f91ed into
2.7.0 ?

Greets,
Stefan

> 
> Dave
>>
>> Greets,
>> Stefan
>>
> --
> Dr. David Alan Gilbert / address@hidden / Manchester, UK
>