Re: [Xen-devel] [Xen-users] Xen bridging issue.

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Wed, Sep 09, 2015 at 10:09:09AM +0300, johnny Strom wrote:
[...]
> 
> Hello again
> 
> I am not sure but there might be another issue with the xen_netback module
> in Debian jessie.
> 
> I am not able to set the  max_queues options so that it is set at load time.
> 
> I have tested with the loop kernel module where it works to set an value but
> doing the same for
> the xen_netback driver dose not work:
> 
> This works with loop module like this:
> options loop max_loop=50
> 
> And then doing the same with the xen_netback that dose not work:
> options xen_netback max_queues=4
> 
> Or is there some other way it should be set in
> /etc/modprobe.d/xen_netback.conf?
> 
> 
> Best regards Johnny
> 

After looking at the code more carefully I think that's a bug.

I will send a patch to fix it when I get around to do it. In the mean
time (till the bug fix is propagated to Debian, that probably takes
quite a bit of time), you can use a script to echo the value you want to
the control knob during system startup.

I will put a Reported-by tag with your email address in my patch if you
don't mind. I will also CC you on that patch I'm going to send so that
you have an idea when it's merged upstreamed.

Wei.

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