[libvirt-users] Two VF cards

[Michal Privoznik]

On 16.05.2013 23:45, Dominik Mostowiec wrote:
> Hi,
> I try to add 2 VF functions to VM via network.
> Livirt networks:
> vnet0:
> <network>
>   <name>vnet0</name>
>   <forward mode='hostdev' managed='yes'>
>     <pf dev='eth0'/>
>   </forward>
> </network>
> 
> vnet1:
> <network>
>   <name>vnet0</name>
>   <forward mode='hostdev' managed='yes'>
>     <pf dev='eth1'/>
>   </forward>
> </network>
> 
> In VM configuration:
>  <interface type="network">
>      <source network="vnet0"/>
>      <mac address="52:54:0a:b1:48:07"/>
>  </interface>
>  <interface type="network">
>      <source network="vnet1"/>
>      <mac address="52:54:0a:b1:48:07"/>
>  </interface>

This is not a good idea to have two NICs sharing the same MAC.

>  
> VM can't start because:
>  kvm: -device
> pci-assign,configfd=24,host=01:10.1,id=hostdev0,bus=pci.0,addr=0x4:
> Duplicate ID 'hostdev0' for device
> 
> libvirt version 1.0.5.
> 
> What i am doing wrong?
> 


I guess nothing. Libvirt has generated the same IDs for two devices
which is obviously libvirt's faul even in case two NICs sharing the same
MAC. Can you post full domain XML (possibly with network XMLs)? I'll try
to reproduce and maybe I'll find what's wrong.

Michal