Re: [Qemu-devel] VirtIO Net driver for Ubuntu 11.10

[Dunrong Huang]

2012/6/4 Charles.Tsai-蔡清海-研究�l展部 <address@hidden>:
> Yes, I saw that page too. But our current kernel version meets the kernel 
> requirement.
> Why do we need to upgrade it?
I mean maybe the virtio drivers you installed in your VM is unstable.
Virtio is implemented
as a kernel module,  so if you upgrade your kernel, maybe this problem
can be fixed.

It's just a suggestion.
>
> -----Original Message-----
> From: Dunrong Huang [mailto:address@hidden
> Sent: Monday, June 04, 2012 2:26 PM
> To: Charles.Tsai-蔡清海-研究�l展部
> Cc: address@hidden
> Subject: Re: [Qemu-devel] VirtIO Net driver for Ubuntu 11.10
>
> 2012/6/4 Charles.Tsai-蔡清海-研究�l展部 <address@hidden>:
>> I am just curious about this issue. Is there any document mentioning the 
>> lowest version of the kernel to be supported by VirtIO?
>>
> See http://www.linux-kvm.org/page/Virtio
>>
>> -----Original Message-----
>> From: Dunrong Huang [mailto:address@hidden
>> Sent: Monday, June 04, 2012 2:17 PM
>> To: Charles.Tsai-蔡清海-研究�l展部
>> Cc: address@hidden
>> Subject: Re: [Qemu-devel] VirtIO Net driver for Ubuntu 11.10
>>
>> 2012/6/4 Charles.Tsai-蔡清海-研究�l展部 <address@hidden>:
>>> The kernel version is 3.0.0.12
>>> The Qemu version is 1.0.0(we upgraded it)
>>>
>>> What version of kernel do we need to upgrade?
>> The latest version is v3.4, so you can try and upgrade to v3.1, v3.2 or 
>> v3.3, and test it.
>>>
>>> -----Original Message-----
>>> From: mathslinux [mailto:address@hidden
>>> Sent: Monday, June 04, 2012 2:03 PM
>>> To: Charles.Tsai-蔡清海-研究�l展部
>>> Cc: address@hidden
>>> Subject: Re: [Qemu-devel] VirtIO Net driver for Ubuntu 11.10
>>>
>>> Charles.Tsai-蔡清海-研究�l展部 <address@hidden> writes:
>>>
>>>> We recently ran an Ubuntu 11.10 VM which was installed with VirtIO NIC 
>>>> driver. The VirtIO net driver came from the Ubuntu's default package. The 
>>>> VM we installed was configured as a bridge mode. When we ran the Iperf 
>>>> test against the VM, the network interface of the VM was fairly unstable. 
>>>> Sometimes, the network interface of the VM could not receive the packets 
>>>> and we needed to bright the network interface down and up in order to make 
>>>> it work. After we replaced the VirtIo Net driver with ne2k driver and it 
>>>> worked quite stably now.
>>>>
>>>> We know that the performance of virtIO is much better than ne2k in virtual 
>>>> environment. We would like to use virtio driver instead. If this is the 
>>>> virtio driver issue, can you tell us where to get the latest virtIO driver 
>>>> for Ubuntu VM? Otherwise, tell us how to make the virtio net driver work 
>>>> in Ubuntu VM if you have ever had similar issue before.
>>>>
>>>> The version of Qemu installed in Ubuntu is 0.14.1.
>>>>
>>> The virtio driver is implemented in the guest operating system, it's a 
>>> kernel module, so what is your kernel version? Maybe you need a kernel of 
>>> higher version.
>>
>>

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