RE: [Xen-users] Vif order

["Roger Lucas" <roger@xxxxxxxxxxxxx>]

Hi Pepe,

 

You can use the “/etc/iftab” configuration file in the DomU to bind a MAC address to a network interface.  I posted a fairly detailed mail about a week ago detailing the problem I found and my work-around using /etc/iftab.

http://lists.xensource.com/archives/html/xen-users/2007-01/msg00802.html

 

There is apparently a proper fix to Xen somewhere in a development branch, but using “/etc/iftab” is guaranteed to work.

 

You will need to explicitly assign a MAC address in the DomU definition file, however, so that you can match it to the definition in the iftab file rather than allowing Xen to randomly generate a MAC address.

 

HTH,

 

Roger

 

---

From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Pepe Charli
Sent: 25 January 2007 15:21
To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] Vif order

 

>I have more than one vif configured for each of my domUs using something

>like this in their config files:



>vif = [ 'mac=00:16:3E:00:21:0C','mac=00:16:3E:00:01:0C' ]

>

>It used to be the case (pre 

3.0.3, although it's hard to say exactly

>when the change occured), I think, that the first one would always be



>vif1.0 and the second one would be vif1.1 (for the first domU).

>However, using a recent xen-unstable (post 

3.0.3) the ordering of them

>seems to be effectively random, and there is a reasonable chance that



>the second will be vif1.0 and the first vif1.1.



I have the same problem with xen 3.0.4 over Centos 

4.4 (with xen 3.0.3 work ok)



I have 3 domU with this config file:

     ...

     vif = [ 'bridge=xenbr0', 'bridge=xenbr1', 'bridge=xenbr2' ]



     ...

When I start the domUs I get this:

#brctl show

bridge name     bridge id               STP enabled     interfaces

xenbr0          8000.feffffffffff       no              peth0

                                                        

vif0.0

                                                        vif17.1

                                                        vif18.2

                                                        vif4.1

xenbr1          

8000.feffffffffff

       no              peth1

                                                        vif0.1

                                                        vif17.2

                                                        

vif18.0

                                                        vif4.2

xenbr2          8000.feffffffffff       no              peth2

                                                        vif0.2

                                                        

vif17.0

                                                        vif18.1

                                                        vif4.0



Does anyone know a way to force the vif ordering ?





Thanks

Pepe

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users