[ovs-discuss] Installing OVS on open-source XEN (Debian)

[Jean-François Lalau]

Thanks for your response,
As Henrique Rodrigues pointed, the fact is I don't have currently brcompat
loaded, so I guess it is normal than XEN original scripts doesn't work

As for the various script I found, I don't think it is relevant to debug
them here, since it's various homemade scripts that were developed for maybe
older versions of the products and different distros.
But if some people are interested I would be happy to share my found to see
if it can be adapted.


Actually I wrote here in hope that there's some documentation or even
known-to-work scripts for my case, since I guess there's plenty people that
use OVS with XEN and I can't believe that nobody has a procedure for it..

I would prefer not to use brcompat (especially if brcompat support
disappears in future release...) but I'm more a network engineer than a
linux sysadmin so writing myself such scripts is far beyond my knowledge.


I will test with brcompat as a starting point, but if anybody can direct me
to some resources for XEN over OVS, I'll be really glad.



Jean-François Lalau


-----Original Message-----
From: Ben Pfaff [mailto:blp at nicira.com] 
Sent: jeudi 17 janvier 2013 19:29
To: Jean-François Lalau
Cc: discuss at openvswitch.org
Subject: Re: [ovs-discuss] Installing OVS on open-source XEN (Debian)

On Thu, Jan 17, 2013 at 03:44:50PM +0100, Jean-François Lalau wrote:
> But,  I have some trouble with the network scripts that create the VM vif.
> 
> I.E when I try to create a domU I got an error message stating that 
> the hotplug script doesn’t work.

I guess that you should debug it.  If you find a fix, please report it to
the Xen maintainers, if it's a bug in Xen, or to bugs at openvswitch.org if
it's a bug in Open vSwitch.

> I found some replacement scripts for the XEN supplied “vif-bridge” 
> scripts but none works and hours of searching for the issue in various 
> place brought nothing else than a headache.

It's difficult to act on feedback like the above, since it doesn't actually
state what the problem is.

> -          Should I use the Open vSwitch compatibility layer for Linux
> bridging ? (or must I ?)

If the Xen scripts you are using assume that the Linux bridge is in use,
then you will have to adapt them to use Open vSwitch natively or use bridge
compatibility.

Open vSwitch 1.9 will be the last release that includes bridge compatibility
support.  It will not be in later releases.

> -          Should I follow the instruction for
> <http://openvswitch.org/cgi-bin/gitweb.cgi?p=openvswitch;a=blob_plain;
> f=INST ALL.XenServer;hb=HEAD> Building and installing Open vSwitch for 
> Citrix XenServer  ? (despite I use open source Xen and not citrix)

No.