[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] tap devices not receiving packets from a bridge
From: |
Peter Lieven |
Subject: |
Re: [Qemu-devel] tap devices not receiving packets from a bridge |
Date: |
Thu, 16 May 2013 10:47:02 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120827 Thunderbird/15.0 |
Am 16.05.2013 10:40, schrieb Michael S. Tsirkin:
> On Thu, May 16, 2013 at 09:20:55AM +0100, Nicholas Thomas wrote:
>> Hi,
>>
>> On Thu, 2013-05-16 at 09:27 +0300, Michael S. Tsirkin wrote:
>>> On Thu, May 16, 2013 at 09:24:05AM +0300, Michael S. Tsirkin wrote:
>>>> Is this with or without vhost-net in host?
>>>
>>> never mind, I see it's without.
>>> Try to enable vhost-net (you'll have to switch to -netdev syntax
>>> for that to work) and see if this help.
>>> If it does it's likely a qemu bug if not probably a guest bug.
>>
>> Switching to -netdev is non-trivial for me, unfortunately.
>
> Interesting. Why is that?
>
>> Anyway, it's
>> definitely a qemu bug - it happens on kernels 3.2 and 3.9 with 1.4.1,
>> but doesn't happen with qemu 0.15.0 or 1.5.0rc1.
>>
>> I'll have a dig through git to see if I can identify the patch that
>> resolves it. It feels-like qemu sometimes stops reading from the tap
>> file descriptor between ipxe exiting and the linux kernel bringing up
>> the network interface, and never recovers from that.
>>
>> /Nick
>
> You can try to bisect, yes.
>
It would be good to bisect this. I would appreciate it. I have a similar
problem with rtl8139 (without vhost-net), but I was unable
to reproduce yet.
Thanks,
Peter
- Re: [Qemu-devel] tap devices not receiving packets from a bridge, Nicholas Thomas, 2013/05/14
- Re: [Qemu-devel] tap devices not receiving packets from a bridge, Peter Lieven, 2013/05/14
- Re: [Qemu-devel] tap devices not receiving packets from a bridge, Nicholas Thomas, 2013/05/14
- Re: [Qemu-devel] tap devices not receiving packets from a bridge, Nicholas Thomas, 2013/05/15
- Re: [Qemu-devel] tap devices not receiving packets from a bridge, Michael S. Tsirkin, 2013/05/16
- Re: [Qemu-devel] tap devices not receiving packets from a bridge, Michael S. Tsirkin, 2013/05/16
- Re: [Qemu-devel] tap devices not receiving packets from a bridge, Nicholas Thomas, 2013/05/16
- Re: [Qemu-devel] tap devices not receiving packets from a bridge, Michael S. Tsirkin, 2013/05/16
- Re: [Qemu-devel] tap devices not receiving packets from a bridge,
Peter Lieven <=
- Re: [Qemu-devel] tap devices not receiving packets from a bridge, Nicholas Thomas, 2013/05/16
- Re: [Qemu-devel] tap devices not receiving packets from a bridge, Michael S. Tsirkin, 2013/05/16