'Numerical result out of range' result when live migrating a instance in Red Hat OpenStack Platform
Issue
When live migrating a instance in Red Hat OpenStack Platform, the following error can be seen in /var/log/nova/nova-compute.log:
In RHOSP 9:
Live Migration failure: Unable to write to '/sys/fs/cgroup/cpuset/machine.slice/machine-qemu\x2d64\x2dinstance\x2d00004361.scope/emulator/cpuset.cpus': Numerical result out of range
In RHOSP 10:
Live Migration failure: cannot set CPU affinity on process 14754: Invalid argument
Environment
- Red Hat OpenStack Platform 16.2 (RHOSP)
- Red Hat OpenStack Platform 16.1 (RHOSP)
- Red Hat OpenStack Platform 10 (RHOSP)
- Red Hat OpenStack Platform 9 (RHOSP)
- Live Migration operations
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