Re: [Xen-users] domU vif networking problem or bug

["Fajar A. Nugraha" <fajar@xxxxxxxxx>]

On Wed, Feb 18, 2009 at 4:32 PM, Martin Fuxa <fuxa_kos@xxxxxxxxxx> wrote:
> Hi guys,
> there must be something wrong, maybe with xen vif.
>
> I have two test servers
> 1/ Supermicro 6015C-NT (this story isn't Supermicro problem!)

It probably IS

> 2/ HP ML 110 G5
>
> System CentOS 5 (x86_64 for dom0, i86 for domU)

what version of xen and kernel-xen (try rpm -q) ?

>
> I can perform dom0 installation on both servers, without problem.
>
> But I can't install domU at Supermicro (I can at HP).
> Error:
> Unable to retrieve http://192.168.6.100/centos/images/stage2.img
> Using
> virt-install -d --nographics -p -r 2048 --vcpus 1 -f /dev/lvg1/lv1 -l
> http://192.168.6.100/centos/ -n test

> Ok, I can login to domU at Supermicro from dom0 console. But there is still
> problem with network. I can ping, dig elsewhere, but I can't do wget, elinks,
> run network services ...

Sounds like an old problem
Try this
http://wiki.xensource.com/xenwiki/XenFaq#head-4ce9767df34fe1c9cf4f85f7e07cb10110eae9b7

If you're still using an old version (from Centos 5.0, for example),
you should try updating it to the latest available version first (RHEL
5 is currently at xen-3.0.3-80.el5 and kernel-xen-2.6.18-128.1.1.el5).


>
> I can't see any errors log/message.
>
> Supermicro have eth0 + eth1 module igb, Intel 82575EB.
> [root@vali2 xen]# brctl show
> bridge name     bridge id               STP enabled     interfaces
> virbr0          8000.000000000000       yes
> xenbr0          8000.feffffffffff       no              vif1.0
>                                                        peth0
>                                                        vif0.0
> Maybe, why two vif?

It's normal. vif1.0 is your domU's eth0, vif0.0 is the backend for
your dom0's eth0, peth0 is your real eth0.

Regards,

Fajar

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