[libvirt-users] [libvirt] libvirtError: this function is not supported by the connection driver: virInterfaceDefineXML

[Sijo Jose]

Thanks, let me see it


On Wed, Mar 12, 2014 at 8:01 PM, Michal Privoznik <mprivozn at redhat.com>wrote:

> On 12.03.2014 14:41, Sijo Jose wrote:
>
>>
>>
>>
>> Hi,
>> Could anyone help I'm getting the following error when I tried to add a
>> new network interface.
>>
>> DETAILS
>>
>>
>> Connection
>> ---------------------------
>> import libvirt
>> conn = libvirt.open('qemu:///system')
>>
>> Interface XML
>> ----------------------
>>
>> <interface type="bridge" name="br0">
>>    <start mode="onboot"/>
>>    <mtu size="1500"/>
>>    <protocol family="ipv4">
>>      <dhcp/>
>>    </protocol>
>>    <bridge stp="off" delay="0.01">
>>      <interface type="ethernet" name="eth0">
>>        <mac address="ab:bb:cc:dd:ee:ff"/>
>>      </interface>
>>      <interface type="ethernet" name="eth1"/>
>>    </bridge>
>> </interface>
>>
>>
>>
>>
>>
>> In [96]:
>>
>> conn.interfaceDefineXML(interfacexml,0)
>>
>> ------------------------------------------------------------
>> ---------------
>> libvirtError                               Traceback (most recent call
>> last)
>> /home/saju/<ipython-input-96-0536ffe3fa23>  in<module>()
>> ----> 1  conn.interfaceDefineXML(br1xml,0)
>>
>> /usr/lib/python2.7/dist-packages/libvirt.pyc  ininterfaceDefineXML(self,
>> xml, flags)
>>     2750          libvirtd. """
>>     2751          ret=  libvirtmod.virInterfaceDefineXML(self._o,  xml,
>>  flags)
>> -> 2752          if  retis  None:raise  libvirtError('virInterfaceDefineXML()
>> failed',  conn=self)
>>     2753          __tmp=  virInterface(self,  _obj=ret)
>>
>>     2754          return  __tmp
>>
>> libvirtError: this function is not supported by the connection driver:
>> virInterfaceDefineXML
>>
>>
> That's because you've libvirt compiled with udev rather than netcf. The
> netcf is the only one backend that knows how to create a new interface.
>
> Install netcf and rebuild libvirt and you should be able to create
> interfaces via libvirt.
>
> Michal
>
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