Reviewed: https://review.openstack.org/317065
Committed:
https://git.openstack.org/cgit/openstack/nova/commit/?id=2150d5d8e17323bc9fce11903da3afffda211d26
Submitter: Jenkins
Branch: stable/mitaka
commit 2150d5d8e17323bc9fce11903da3afffda211d26
Author: Jay Pipes <jaypi...@gmail.com>
Date: Mon Apr 4 12:32:56 2016 -0700
pci: eliminate DB lookup PCI requests during claim
The nova.pci.manager.PciDevTracker.claim_instance() accepted an Instance
object and called nova.objects.InstancePCIRequests.get_by_instance() to
retrieve the PCI requests for the instance. This caused a DB lookup of
the PCI requests for that instance, even though in all situations other
than for migration/resize, the instance's PCI requests were already
retrieved by the resource tracker.
This change removes that additional DB lookup during claim_instance() by
changing the instance parameter to instead be an InstancePCIRequests
object and an InstanceNUMATopology object.
Also in this patch is a change to nova.objects.PciDevice.claim() that
changes the single parameter to an instance UUID instead of an Instance
object, since nothing other than the instance's UUID was used in the
method.
Closes-Bug: #1582278
Related-Bug: #1368201
Change-Id: I9ab10c3035628f083233114b47b43a9b9ecdd166
(cherry picked from commit 1f259e2a9423a4777f79ca561d5e6a74747a5019)
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https://bugs.launchpad.net/bugs/1582278
Title:
[SR-IOV][CPU Pinning] nova compute can try to boot VM with CPUs from
one NUMA node and PCI device from another NUMA node.
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