Public bug reported:
When adding or removing CPUs to a compute node running the libvirt
driver, the correct new amount of CPUs is not reported to the
controller/scheduler.
As a result, the scheduler will not consider added or removed capacity
in future scheduling decisions.
To fix this, the number of CPUs on a compute node should not be cached
in the libvirt driver. Instead it should be recalculated in the periodic
task for updating resource availability.
I'll provide a patch for fixing the bug along with a unit test.
** Affects: nova
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1460043
Title:
libvirt: number of CPUs is not updated after hotplugging host CPUs
Status in OpenStack Compute (Nova):
New
Bug description:
When adding or removing CPUs to a compute node running the libvirt
driver, the correct new amount of CPUs is not reported to the
controller/scheduler.
As a result, the scheduler will not consider added or removed capacity
in future scheduling decisions.
To fix this, the number of CPUs on a compute node should not be cached
in the libvirt driver. Instead it should be recalculated in the
periodic task for updating resource availability.
I'll provide a patch for fixing the bug along with a unit test.
To manage notifications about this bug go to:
https://bugs.launchpad.net/nova/+bug/1460043/+subscriptions
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