[libvirt-users] NUMA VM and assigning interfaces

[Amir Shehata]

Laine,

Thanks. You're correct that I haven't gotten to use the new pci bus yet.

I'm currently trying to upgrade to the versions you specified. Just having
a bunch of problems... I'll let you know the results of the experiment once
I sort them out.

thanks
amir

On 21 November 2016 at 14:06, Laine Stump <laine at laine.org> wrote:

> On 11/21/2016 04:48 PM, Amir Shehata wrote:
>
>> Laine,
>>
>> Thank you for your response.
>>
>> I did use the numa element instead of using qemu commandline and that
>> worked:
>>
>>  16   <cpu mode='custom' match='exact'>
>> ...
>>  34     <numa>
>>  35       <cell id='0' cpus='0-1' memory='1048576' unit='KiB'/>
>>  36       <cell id='1' cpus='2-3' memory='1048576' unit='KiB'/>
>>  37     </numa>
>>  38   </cpu>
>>
>> However, whenever I try to use the pci-expander-bus I get:
>> error: XML document failed to validate against schema: Unable to validate
>> doc against /usr/share/libvirt/schemas/domain.rng
>> Extra element devices in interleave
>> Element domain failed to validate content
>>
>
> Sorry, I forgot to mention that pci-expander-bus is a fairly recent
> addition to libvirt and qemu. For libvirt support of that controller,
> you'll need at least libvirt 1.3.4, and qemu 2.4.0. Anything earlier than
> that and the guest OS won't have any visibility to the NUMA node of
> specific devices.
>
>
>
>> I tried the following
>>
>>  93     <controller type='pci' index='1' model='pci-expander-bus'>
>>  94       <address type='pci' domain='0x0000' bus='0x00' slot='0x0b'
>> function='0x0'/>
>>  95     </controller>
>>
>> and
>>
>>  93     <controller type='pci' index='1' model='pci-expander-bus'>
>>  94       <target busNr='254'>
>>  95         <node>1</node>
>>  96       </target>
>>  97       <address type='pci' domain='0x0000' bus='0x00' slot='0x0b'
>> function='0x0'/>
>>  98     </controller>
>>
>>
>> I got the syntax from: https://www.redhat.com/archive
>> s/libvir-list/2016-March/msg01224.html
>>
>> Just to give you a bit more info. This is running on:
>> Linux ashehata-DellPE 3.19.0-51-generic #58-Ubuntu SMP Fri Feb 26
>> 21:22:26 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
>>
>
>
>> below is a dump of the working XML file I'm using
>>
>
> I notice you don't have any device with pci bus='1'. I'm assuming you just
> hadn't gotten to that part of the experiment yet, correct?
>
>
>
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