* [Qemu-devel] Problem with virtio net in guest
@ 2008-12-18 15:18 nuitari-qemu
2008-12-21 16:23 ` Dor Laor
0 siblings, 1 reply; 3+ messages in thread
From: nuitari-qemu @ 2008-12-18 15:18 UTC (permalink / raw)
To: qemu-devel
I use virtio_net in guest and use kvm-81
After a migration none of the network cards in the guest work.
If I check with dmesg, I see bad_partial_csum all over the place.
If I use e1000 for the guest NICs, everything works.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Qemu-devel] Problem with virtio net in guest
2008-12-18 15:18 [Qemu-devel] Problem with virtio net in guest nuitari-qemu
@ 2008-12-21 16:23 ` Dor Laor
2008-12-21 19:08 ` Anthony Liguori
0 siblings, 1 reply; 3+ messages in thread
From: Dor Laor @ 2008-12-21 16:23 UTC (permalink / raw)
To: qemu-devel
nuitari-qemu@nuitari.net wrote:
> I use virtio_net in guest and use kvm-81
> After a migration none of the network cards in the guest work.
>
> If I check with dmesg, I see bad_partial_csum all over the place.
This is because there is no live migration (dirty bit tracking) in
virtio yet.
>
> If I use e1000 for the guest NICs, everything works.
>
>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Qemu-devel] Problem with virtio net in guest
2008-12-21 16:23 ` Dor Laor
@ 2008-12-21 19:08 ` Anthony Liguori
0 siblings, 0 replies; 3+ messages in thread
From: Anthony Liguori @ 2008-12-21 19:08 UTC (permalink / raw)
To: dlaor, qemu-devel
On Sun, Dec 21, 2008 at 10:23 AM, Dor Laor <dlaor@redhat.com> wrote:
>
> nuitari-qemu@nuitari.net wrote:
>>
>> I use virtio_net in guest and use kvm-81
>> After a migration none of the network cards in the guest work.
>>
>> If I check with dmesg, I see bad_partial_csum all over the place.
>
> This is because there is no live migration (dirty bit tracking) in virtio yet.
There is now, actually. I suspect save/restore with GSO is broken or
not resilient enough to deal with two hosts without agreeable GSO
support.
Regards,
Anthony Liguori
>>
>> If I use e1000 for the guest NICs, everything works.
>>
>>
>
>
>
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2008-12-21 19:08 UTC | newest]
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2008-12-18 15:18 [Qemu-devel] Problem with virtio net in guest nuitari-qemu
2008-12-21 16:23 ` Dor Laor
2008-12-21 19:08 ` Anthony Liguori
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