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Hi, Stephen,

After setting flavor, VM was created in node 0 (expect in node1). How to debug it?

Nova.conf
[neutron]
physnets = physnet0,physnet1

[neutron_physnet_physnet1]
numa_nodes = 1

openstack network create net1 --external --provider-network-type=vlan --provider-physical-network=physnet1 --provider-segment=200
...
openstack server create --flavor 1 --image=cirros-0.3.5-x86_64-disk --nic net-id=net1 vm1

<cputune>
    <shares>1024</shares>
    <vcpupin vcpu='0' cpuset='0-7,16-23'/>
    <emulatorpin cpuset='0-7,16-23'/>
  </cputune>

available: 2 nodes (0-1)
node 0 cpus: 0 1 2 3 4 5 6 7 16 17 18 19 20 21 22 23
node 0 size: 64412 MB
node 0 free: 47658 MB
node 1 cpus: 8 9 10 11 12 13 14 15 24 25 26 27 28 29 30 31
node 1 size: 64502 MB
node 1 free: 44945 MB
node distances:
node   0   1 
  0:  10  21 
  1:  21  10

Thanks,
-Ruijing

-----Original Message-----
From: Stephen Finucane [mailto:sfinucan at redhat.com] 
Sent: Saturday, August 25, 2018 12:15 AM
To: OpenStack Development Mailing List (not for usage questions) <openstack-dev at lists.openstack.org>
Subject: Re: [openstack-dev] [nova][neutron] numa aware vswitch

On Fri, 2018-08-24 at 09:13 -0500, Matt Riedemann wrote:
> On 8/24/2018 8:58 AM, Stephen Finucane wrote:
> > Using this won't add a NUMA topology - it'll just control how any 
> > topology present will be mapped to the guest. You need to enable 
> > dedicated CPUs or a explicitly request a NUMA topology for this to 
> > work.
> > 
> > openstack flavor set --property hw:numa_nodes=1 1
> > 
> > <or>
> > 
> > openstack flavor set --property hw:cpu_policy=dedicated 1
> > 
> > 
> > This is perhaps something that we could change in the future, though 
> > I haven't given it much thought yet.
> 
> Looks like the admin guide [1] should be updated to at least refer to 
> the flavor user guide on setting up these types of flavors?
> 
> [1] 
> https://docs.openstack.org/nova/latest/admin/networking.html#numa-affi
> nity

Good idea.

https://review.openstack.org/596393

Stephen


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