'Numerical result out of range' result when live migrating a instance in Red Hat OpenStack Platform

Solution Verified - Updated -


When live migrating a instance in Red Hat OpenStack Platform, the following error can be seen in /var/log/nova/nova-compute.log:


    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


  • Red Hat OpenStack Platform 9 (RHOSP)
  • Red Hat OpenStack Platform 10 (RHOSP)
  • Red Hat OpenStack Platform 16.1 (RHOSP)
  • Live Migration operations

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