yahoo-eng-team team mailing list archive

[Nikola Đipanov <ndipanov@xxxxxxxxxx>]

Public bug reported:

Libvirt reports even single numa nodes in it's hypervisor capabilities
(which we use to figure out if a compute host is a NUMA host). This is
technically correct, but in Nova we assume that to mean - no NUMA
capabilities when scheduling instances.

Right now we just pass what we get from libvirt as is to the resource
tracker, but we need to make sure that "single NUMA node" hypervisors
are reported back to the resource tracker as non-NUMA.

** Affects: nova
     Importance: High
         Status: Confirmed


** Tags: libvirt

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https://bugs.launchpad.net/bugs/1369945

Title:
  libvirt: libvirt reports even single cell NUMA topologies

Status in OpenStack Compute (Nova):
  Confirmed

Bug description:
  Libvirt reports even single numa nodes in it's hypervisor capabilities
  (which we use to figure out if a compute host is a NUMA host). This is
  technically correct, but in Nova we assume that to mean - no NUMA
  capabilities when scheduling instances.

  Right now we just pass what we get from libvirt as is to the resource
  tracker, but we need to make sure that "single NUMA node" hypervisors
  are reported back to the resource tracker as non-NUMA.

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