Re: network shutdown under heavy load

[rek2 <rek2@binaryfreedom.info>]

Hi guys, it happen again (in this server I didn't patch with the fix you 
guys sent) but I did this so if it happen i can test with tcpdump.. 
seems that the guest can receive packages but can't sent...
when I open a tcpdump I saw traffic coming in, but not out.

Hope this helps..
also I need to know if the patch you guys sent me will be in newer 
versions, if not I like to know since I can't update.


On 12/21/09 11:39 a.m., rek2 wrote:
> You  say this version.. is there a newer version with this patch 
> already apply to it?
>
> Thanks
>
>
>
> On 12/17/09 20:27 p.m., Herbert Xu wrote:
>> On Thu, Dec 17, 2009 at 01:15:46PM -0500, rek2 wrote:
>>> I been told that today the network when down again and one of the guys
>>> here had to log using the console and restart it for that particular
>>> guests..
>>>
>>> on the guest:
>>>   uname -a
>>> Linux XXXX 2.6.27.25-170.2.72.fc10.x86_64 #1 SMP Sun Jun 21 18:39:34 
>>> EDT
>>> 2009 x86_64 x86_64 x86_64 GNU/Linux
>>>
>>> Next time it goes down I will try to run a sniffer and try both sides.
>> OK I'm fairly sure this version has a buggy virtio-net.  Does
>> this patch (if it applies :) help?
>>
>> diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
>> index 9eec5a5..74b3854 100644
>> --- a/drivers/net/virtio_net.c
>> +++ b/drivers/net/virtio_net.c
>> @@ -521,8 +521,10 @@ static void xmit_tasklet(unsigned long data)
>>           vi->svq->vq_ops->kick(vi->svq);
>>           vi->last_xmit_skb = NULL;
>>       }
>> -    if (vi->free_in_tasklet)
>> +    if (vi->free_in_tasklet) {
>>           free_old_xmit_skbs(vi);
>> +        netif_wake_queue(vi->dev);
>> +    }
>>       netif_tx_unlock_bh(vi->dev);
>>   }
>>
>> Cheers,
>
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