Re: Multiple netif device channels (was Fw: [Xen-devel] Xen on /. again)

[Mark Williamson <Mark.Williamson@xxxxxxxxxxxx>]

> That's fine. Yeah, i marked the backend domain as a netif domain, started
> it up, inserted the domain ID into the config for the frontend domain
> (hassle, but necessary as the current code only takes an ID, and not a
> name), and started up the frontend domain. The additional interface showed
> up in the frontend domain, but nothing appeared in the backend.

Remind me: is the frontend having netifs attached to two different backends?  
What happens if you try to attach both netifs to the driver domain (not 
dom0)?

Hmmm, that's strange.  I'm surprised the additional interface showed up in one 
but not the other but I'm not familiar with the support for multiple netifs.

Mike: any idea what might cause this behaviour?  Is this known not to work?

Do you have any experience in the Xend guts?  You could try turning on tracing 
at the top of messages.py and observe exactly what control interface messages 
are being sent.  This is likely to be quite tedious but may allow you to 
infer what information about netifs is flowing between the domains.  You may 
also want to instrument the probing code in netfront.c and netback.c.

Sorry not to be more helpful,
Mark


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