** Changed in: nova
Status: Confirmed => Fix Released
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https://bugs.launchpad.net/bugs/1869804
Title:
Live migration with cpu_shared_set not updating CPU pinning
Status in OpenStack Compute (nova):
Fix Released
Bug description:
In pre-Train times, when live migrating an instance without a CPU
policy (and therefore without a NUMA topology) to a dest with a
vcpu_pin_set, or to a dest with a vcpu_pin_set different from the
source, the instance's CPU pinning information was not updated.
Now that CPU resources are a thing, and we use cpu_dedicated_set and
cpu_shared_set (the version with the new meaning, not the old
cpu_shared_set), this is still a problem. IOW, live migrating a VM
with no CPU policy and no NUMA topology from cpu_shared_set=0,1 to
cpu_shared_set=2,3 will leave it pinned to CPUs 0,1.
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