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numa affinity question


Dear openstack user group,

I have a server with 2 numa nodes and I am trying to setup nova numa affinity.

[root at zeus-53 ~]# numactl -H
available: 2 nodes (0-1)
node 0 cpus: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 28 29 30 31 32 33 34 35 36 37 38 39 40 41
node 0 size: 262029 MB
node 0 free: 2536 MB
node 1 cpus: 14 15 16 17 18 19 20 21 22 23 24 25 26 27 42 43 44 45 46 47 48 49 50 51 52 53 54 55
node 1 size: 262144 MB
node 1 free: 250648 MB
node distances:
node   0   1
  0:  10  21
  1:  21  10


openstack flavor create --public xlarge.numa.perf --ram 250000 --disk 700 --vcpus 25 --property hw:cpu_policy=dedicated --property hw:emulator_threads_policy=isolate --property hw:numa_nodes='1' --property pci_passthrough:alias='nvme:4'
openstack server create --network hpc --flavor xlarge.numa.perf --image centos7.6-kudu-image --availability-zone nova:zeus-53.localdomain --key-name mykey kudu-1

This is the xmldump for the created vm

But for some reason the second VM fails to create with the error
<name>instance-00000108</name>
  <uuid>5d278c90-27ab-4ee4-aeea-e1bf36ac246a</uuid>
  <metadata>
    <nova:instance xmlns:nova="http://openstack.org/xmlns/libvirt/nova/1.0";>
      <nova:package version="18.2.2-1.el7"/>
      <nova:name>kudu-4</nova:name>
      <nova:creationTime>2019-09-25 07:20:32</nova:creationTime>
      <nova:flavor name="xlarge.numa.perf">
        <nova:memory>250000</nova:memory>
        <nova:disk>700</nova:disk>
        <nova:swap>0</nova:swap>
        <nova:ephemeral>0</nova:ephemeral>
        <nova:vcpus>25</nova:vcpus>
      </nova:flavor>
      <nova:owner>
        <nova:user uuid="91e83343e9834c8ba0172ff369c8acac">admin</nova:user>
        <nova:project uuid="b91520cff5bd45c59a8de07c38641582">admin</nova:project>
      </nova:owner>
      <nova:root type="image" uuid="ff9e09ac-86d5-4698-9883-cf3e6579caec"/>
    </nova:instance>
  </metadata>
  <memory unit='KiB'>256000000</memory>
  <currentMemory unit='KiB'>256000000</currentMemory>
  <vcpu placement='static'>25</vcpu>
  <cputune>
    <shares>25600</shares>
    <vcpupin vcpu='0' cpuset='27'/>
    <vcpupin vcpu='1' cpuset='55'/>
    <vcpupin vcpu='2' cpuset='50'/>
    <vcpupin vcpu='3' cpuset='22'/>
    <vcpupin vcpu='4' cpuset='49'/>
    <vcpupin vcpu='5' cpuset='21'/>
    <vcpupin vcpu='6' cpuset='48'/>
    <vcpupin vcpu='7' cpuset='20'/>
    <vcpupin vcpu='8' cpuset='25'/>
    <vcpupin vcpu='9' cpuset='53'/>
    <vcpupin vcpu='10' cpuset='18'/>
    <vcpupin vcpu='11' cpuset='46'/>
    <vcpupin vcpu='12' cpuset='51'/>
    <vcpupin vcpu='13' cpuset='23'/>
    <vcpupin vcpu='14' cpuset='19'/>
    <vcpupin vcpu='15' cpuset='47'/>
    <vcpupin vcpu='16' cpuset='26'/>
    <vcpupin vcpu='17' cpuset='54'/>
    <vcpupin vcpu='18' cpuset='42'/>
    <vcpupin vcpu='19' cpuset='14'/>
    <vcpupin vcpu='20' cpuset='17'/>
    <vcpupin vcpu='21' cpuset='45'/>
    <vcpupin vcpu='22' cpuset='43'/>
    <vcpupin vcpu='23' cpuset='15'/>
    <vcpupin vcpu='24' cpuset='24'/>
    <emulatorpin cpuset='14-15,17-27,42-43,45-51,53-55'/>
  </cputune>
  <numatune>
    <memory mode='strict' nodeset='1'/>
    <memnode cellid='0' mode='strict' nodeset='1'/>
  </numatune>
  <sysinfo type='smbios'>
    <system>
      <entry name='manufacturer'>RDO</entry>
      <entry name='product'>OpenStack Compute</entry>
      <entry name='version'>18.2.2-1.el7</entry>
      <entry name='serial'>00000000-0000-0000-0000-0cc47aa482cc</entry>
      <entry name='uuid'>5d278c90-27ab-4ee4-aeea-e1bf36ac246a</entry>
      <entry name='family'>Virtual Machine</entry>
    </system>
  </sysinfo>
  <os>
    <type arch='x86_64' machine='pc-i440fx-rhel7.6.0'>hvm</type>
    <boot dev='hd'/>
    <smbios mode='sysinfo'/>
  </os>
  <features>
    <acpi/>
    <apic/>
  </features>
  <cpu mode='host-model' check='partial'>
    <model fallback='allow'/>
    <topology sockets='25' cores='1' threads='1'/>
    <numa>
      <cell id='0' cpus='0-24' memory='256000000' unit='KiB'/>
    </numa>
  </cpu>
  <clock offset='utc'>
    <timer name='pit' tickpolicy='delay'/>
    <timer name='rtc' tickpolicy='catchup'/>
    <timer name='hpet' present='no'/>
  </clock>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>destroy</on_crash>
  <devices>
    <emulator>/usr/libexec/qemu-kvm</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2' cache='none'/>
      <source file='/var/lib/nova/instances/5d278c90-27ab-4ee4-aeea-e1bf36ac246a/disk'/>
      <target dev='vda' bus='virtio'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
    </disk>
    <controller type='usb' index='0' model='piix3-uhci'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
    </controller>
    <controller type='pci' index='0' model='pci-root'/>
    <interface type='bridge'>
      <mac address='fa:16:3e:d6:1d:78'/>
      <source bridge='qbr16cb6622-01'/>
      <target dev='tap16cb6622-01'/>
      <model type='virtio'/>
      <mtu size='1500'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
    </interface>
    <serial type='pty'>
      <log file='/var/lib/nova/instances/5d278c90-27ab-4ee4-aeea-e1bf36ac246a/console.log' append='off'/>
      <target type='isa-serial' port='0'>
        <model name='isa-serial'/>
      </target>
    </serial>
    <console type='pty'>
      <log file='/var/lib/nova/instances/5d278c90-27ab-4ee4-aeea-e1bf36ac246a/console.log' append='off'/>
      <target type='serial' port='0'/>
    </console>
    <input type='tablet' bus='usb'>
      <address type='usb' bus='0' port='1'/>
    </input>
    <input type='mouse' bus='ps2'/>
    <input type='keyboard' bus='ps2'/>
    <graphics type='vnc' port='-1' autoport='yes' listen='192.168.1.53'>
      <listen type='address' address='192.168.1.53'/>
    </graphics>
    <video>
      <model type='cirrus' vram='16384' heads='1' primary='yes'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
    </video>
    <hostdev mode='subsystem' type='pci' managed='yes'>
      <source>
        <address domain='0x0000' bus='0x87' slot='0x00' function='0x0'/>
      </source>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
    </hostdev>
    <hostdev mode='subsystem' type='pci' managed='yes'>
      <source>
        <address domain='0x0000' bus='0x86' slot='0x00' function='0x0'/>
      </source>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
    </hostdev>
    <hostdev mode='subsystem' type='pci' managed='yes'>
      <source>
        <address domain='0x0000' bus='0x85' slot='0x00' function='0x0'/>
      </source>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
    </hostdev>
    <hostdev mode='subsystem' type='pci' managed='yes'>
      <source>
        <address domain='0x0000' bus='0x84' slot='0x00' function='0x0'/>
      </source>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
    </hostdev>
    <memballoon model='virtio'>
      <stats period='10'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/>
    </memballoon>
  </devices>
</domain>

QUESTIONS:

Are my vcpus in the same numa node?  if not why?
How can I tell from the xmldump that all vcpus are assigned to the same numa node?

Thank you very much

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