Re: [Xen-users] xl and vifname

[Andy Smith <andy@strugglers.net>]

Hi Wei,

On Wed, Dec 28, 2011 at 03:25:57PM +0000, Wei Liu wrote:
> Does xm serve your purpose -- specifying dom0 network interface of a
> given name (rather then using vifX.X)?

Yes. We need to statically configure the vif names in order to have
them be the same every time, and to know which virtual machine
configuration they belong to. Not have them change every time the VM
is restarted.

(Yes I am aware that it would be possible to translate the vifX.Y
string into a domU name and go from there, but that adds a lot of
complexity)

> If it can serve you purpose, can you verify which network backend you
> are using by running following command:
> 
> $ ps aux | egrep '(qemu|net)'

This didn't match anything. These are PV domUs and there isn't a
process in dom0 for each domU's netback. This is 4.0.1 on Debian
stable.

> If you're running netback and you can use you preferred name for the
> interface, then a similar fix for xl should be possible.

Something like:

    vif = [ "mac=00:16:3e:8e:ac:0a, ip=192.168.82.198, vifname=vm-85" ]

has worked for us for ~5 years through Xen 3.x and 4.x.

Cheers,
Andy