Re: [regression] virtio net locks up

2012-08-19 Thread Michael S. Tsirkin
On Sat, Aug 18, 2012 at 01:25:05AM +0200, Bernd Schubert wrote: On 08/12/2012 01:45 PM, Michael S. Tsirkin wrote: On Mon, Jul 30, 2012 at 08:08:31PM +0200, Bernd Schubert wrote: On 07/30/2012 07:33 PM, Bernd Schubert wrote: Hello Stefan, Stefan Hajnoczi stefanha at gmail.com writes:

Re: [regression] virtio net locks up

2012-08-17 Thread Bernd Schubert
On 08/12/2012 01:45 PM, Michael S. Tsirkin wrote: On Mon, Jul 30, 2012 at 08:08:31PM +0200, Bernd Schubert wrote: On 07/30/2012 07:33 PM, Bernd Schubert wrote: Hello Stefan, Stefan Hajnoczi stefanha at gmail.com writes: On Wed, Jan 11, 2012 at 4:18 PM, Bernd Schubert bernd.schubert at

Re: [regression] virtio net locks up

2012-08-12 Thread Michael S. Tsirkin
On Mon, Jul 30, 2012 at 08:08:31PM +0200, Bernd Schubert wrote: On 07/30/2012 07:33 PM, Bernd Schubert wrote: Hello Stefan, Stefan Hajnoczi stefanha at gmail.com writes: On Wed, Jan 11, 2012 at 4:18 PM, Bernd Schubert bernd.schubert at itwm.fraunhofer.de wrote: On 01/11/2012 05:04 PM,

Re: [regression] virtio net locks up

2012-08-02 Thread Stefan Hajnoczi
On Wed, Aug 1, 2012 at 6:05 PM, Bernd Schubert bernd.schub...@itwm.fraunhofer.de wrote: On 07/31/2012 12:23 PM, Stefan Hajnoczi wrote: On Mon, Jul 30, 2012 at 7:08 PM, Bernd Schubert I took a quick glance where skb_recv_done is registered at all and traced it back to vp_find_vqs().

Re: [regression] virtio net locks up

2012-08-01 Thread Bernd Schubert
On 07/31/2012 12:23 PM, Stefan Hajnoczi wrote: On Mon, Jul 30, 2012 at 7:08 PM, Bernd Schubert I took a quick glance where skb_recv_done is registered at all and traced it back to vp_find_vqs(). Looking into that function I noticed MSI and so tried to boot with pci=nomsi. And indeed I

Re: [regression] virtio net locks up

2012-07-31 Thread Stefan Hajnoczi
On Mon, Jul 30, 2012 at 7:08 PM, Bernd Schubert bernd.schub...@itwm.fraunhofer.de wrote: On 07/30/2012 07:33 PM, Bernd Schubert wrote: Hello Stefan, Stefan Hajnoczi stefanha at gmail.com writes: On Wed, Jan 11, 2012 at 4:18 PM, Bernd Schubert bernd.schubert at itwm.fraunhofer.de wrote:

Re: [regression] virtio net locks up

2012-07-30 Thread Bernd Schubert
Hello Stefan, Stefan Hajnoczi stefanha at gmail.com writes: On Wed, Jan 11, 2012 at 4:18 PM, Bernd Schubert bernd.schubert at itwm.fraunhofer.de wrote: On 01/11/2012 05:04 PM, Stefan Hajnoczi wrote: Try pinging the host's IP address from inside the guest.  Run tcpdump on the guest's tap

Re: [regression] virtio net locks up

2012-07-30 Thread Bernd Schubert
On 07/30/2012 07:33 PM, Bernd Schubert wrote: Hello Stefan, Stefan Hajnoczi stefanha at gmail.com writes: On Wed, Jan 11, 2012 at 4:18 PM, Bernd Schubert bernd.schubert at itwm.fraunhofer.de wrote: On 01/11/2012 05:04 PM, Stefan Hajnoczi wrote: Try pinging the host's IP address from inside

[regression] virtio net locks up

2012-01-11 Thread Bernd Schubert
No idea what is going on, but recent kernels lock up here after transferring some amount of data. So far I only know that 2.6.32 is the last working kernel I have tested and 3.0 is the first non-working version I tested. How to reproduce: vm1: iperf -c vm2 vm2: iperf -s vm1 After some time

Re: [regression] virtio net locks up

2012-01-11 Thread Bernd Schubert
On 01/11/2012 04:24 PM, Bernd Schubert wrote: No idea what is going on, but recent kernels lock up here after transferring some amount of data. So far I only know that 2.6.32 is the last working kernel I have tested and 3.0 is the first non-working version I tested. Sorry forgot to tell the

Re: [regression] virtio net locks up

2012-01-11 Thread Stefan Hajnoczi
On Wed, Jan 11, 2012 at 3:24 PM, Bernd Schubert bernd.schub...@itwm.fraunhofer.de wrote: Any idea what is going on or how to debug it? Here are a couple of ideas that would yield more information: Since the console still works I suggest checking dmesg output inside the guest. Are there any

Re: [regression] virtio net locks up

2012-01-11 Thread Bernd Schubert
Hello Stefan, thanks for your help! On 01/11/2012 05:04 PM, Stefan Hajnoczi wrote: On Wed, Jan 11, 2012 at 3:24 PM, Bernd Schubert bernd.schub...@itwm.fraunhofer.de wrote: Any idea what is going on or how to debug it? Here are a couple of ideas that would yield more information: Since the

Re: [regression] virtio net locks up

2012-01-11 Thread Stefan Hajnoczi
On Wed, Jan 11, 2012 at 4:18 PM, Bernd Schubert bernd.schub...@itwm.fraunhofer.de wrote: On 01/11/2012 05:04 PM, Stefan Hajnoczi wrote: Try pinging the host's IP address from inside the guest.  Run tcpdump on the guest's tap interface from the host and observe whether or not you see any