[ovirt-users] VDSM hook for setting DSCP bits?

[Chris Adams]

Once upon a time, Dan Yasny <dyasny at gmail.com> said:
> shouldn't be hard to do. Can you provide the details of what you need to
> happen to the VM exactly?
> - domxml changes
> - other host level changes
> - whether the VM should be able to live migrate

It looks like libvirt supports setting up DSCP bits with nwfilter, per:

https://libvirt.org/formatnwfilter.html

I will play with this some to see exactly how to use it (haven't tried
it before).  If that's the case, there shouldn't be any host-level
changes required.  I would want the VM to be able to live migrate still
(with the DSCP still applied).

I'll test this out on a bare libvirt VM and see if that'll do the job,
and report back with what XML is needed.

Thanks.


> On Tue, Feb 10, 2015 at 2:34 PM, Chris Adams <cma at cmadams.net> wrote:
> 
> > Is there a VDSM hook available that can set DSCP bits on a VM's network
> > interface?  I want to do some QoS for some traffic across my network,
> > and it would be easier if I could set DSCP bits outside the VM.
> >
> > I see vdsm-hook-qos, but that appears to just set bandwidth control in
> > the Linux host, not DSCP on packets for the rest of the network.
> > --
> > Chris Adams <cma at cmadams.net>
> > _______________________________________________
> > Users mailing list
> > Users at ovirt.org
> > http://lists.ovirt.org/mailman/listinfo/users
> >

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-- 
Chris Adams <cma at cmadams.net>