From: Erik Brakkee <erik@brakkee.org>
To: unlisted-recipients:; (no To-header on input)
Cc: KVM list <kvm@vger.kernel.org>
Subject: Re: UDP problem with virtio...
Date: Wed, 30 May 2012 11:48:52 +0200 [thread overview]
Message-ID: <4FC5ED04.6030906@brakkee.org> (raw)
In-Reply-To: <CAJSP0QXjR-JJy9xZr=1m_+p_tF-h3mOhviDigVfJYTv4+zQWmQ@mail.gmail.com>
Stefan Hajnoczi wrote:
> On Sat, May 26, 2012 at 11:23 AM, Erik Brakkee<erik@brakkee.org> wrote:
>> I have done some more experiments and it does work when using a Centos 6.2
>> guest. Therefore, it is most likely a compatibility issues between the guest
>> and host virtio implementation.
>> I read somewhere there is some sort of compatibility mode for virtio but
>> could not find how to activate it. Is there a way to make these different
>> virtio host/guest implementations talk to each other?
> They should be compatible.
>
> I noticed in your domain XML the VM has two virtio-net interfaces.
> Could that be affecting your mount success?
>
> Did you collect a packet capture inside the guest? (tcpdump -nli eth0
> -s0 -w /tmp/dump.pcap)
>
> It would be interesting to understand what the guest sees during the
> failed and successful UDP NFS mounts.
>
> Can you be more specific about the mount failure. Is there an error
> message? Anything interesting in the guest's dmesg?
>
> Did you collect a packet capture on the host?
>
> Stefan
Hi all,
I sent a reply earlier but apparently not to this mailing list.
The problem went away after installing the latest software updates on
the openSuSE 11.3 guest. I tried reproducing it from a backup of the VM
running the older kernel but was unable to do this on a openSuSE 12.1
host. To reproduce it I would have had to use the centos 6.2 host but
that would be quite a lot more work to do. So I am leaving the issue now
as resolved. It was probably some earlier bug that was fixed.
Cheers
Erik
--
Nonsense and other useful things: http://brakkee.org
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next prev parent reply other threads:[~2012-05-30 9:48 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-25 20:55 UDP problem with virtio Erik Brakkee
2012-05-26 10:23 ` Erik Brakkee
2012-05-28 12:02 ` Stefan Hajnoczi
2012-05-30 9:48 ` Erik Brakkee [this message]
2012-05-28 12:31 ` Michael S. Tsirkin
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