[libvirt-users] Guest interface names not same as configured name

[PR PR]

Thanks for the quick response. I was able to use udev to control the names
in the guest. Reg patch, i am new to this codebase and sure if you give me
pointers on which file to look into I can give it a shot.

Thanks

On Thu, Apr 4, 2019 at 2:35 PM Laine Stump <laine at redhat.com> wrote:

> On 4/4/19 2:02 PM, PR PR wrote:
> > Hi,
> >
> > I am creating a guest with following description for interfaces in the
> > xml using virsh create xml command. For some reason, the guest interface
> > names in the VM dont match the names specified in the xml. Is there a
> > way to make guest interface names predictable?
>
> For qemu (which you've indicating you're using) there isn't any way to
> set the name of the network device in the guest from the libvirt config.
> There is no visibility of the <guest dev='xxx'> element into the guest
> OS; all that the guest can know is that there is an e1000 ethernet
> device plugged into PCI bus 0 slot 3, and it has MAC address
> 52:54:00:17:0b:e7. Any determination of name must be done within the
> guest OS.
>
> The <guest dev='blah'> element is only used by the LXC and openvz
> drivers. It really should be flagged as an error during validation for
> other drivers (patches welcome :-).
>
>
> >
> > Following is the qemu version on host
> >
> > dpkg --list | grep -i qemu
> > ii  qemu-kvm                              1:2.11+dfsg-1ubuntu7.10
> >          amd64        QEMU Full virtualization on x86 hardware
> >
> >      <interface type='user'>
> >        <mac address='52:54:00:17:0b:e7'/>
> >        <guest dev='eth0'/>
> >        <model type='e1000'/>
> >        <alias name='net0'/>
> >        <address type='pci' domain='0x0000' bus='0x00' slot='0x03'
> > function='0x0'/>
> >      </interface>
> >      <interface type='ethernet'>
> >        <mac address='52:54:00:ee:70:34'/>
> >        <target dev='net0'/>
> >        <guest dev='Ethernet0'/>
> >        <model type='rtl8139'/>
> >        <alias name='net1'/>
> >        <address type='pci' domain='0x0000' bus='0x00' slot='0x05'
> > function='0x0'/>
> >      </interface>
> >
> > Thanks
> >
> > _______________________________________________
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> > libvirt-users at redhat.com
> > https://www.redhat.com/mailman/listinfo/libvirt-users
> >
>
>
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