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  1. OpenShift Virtualization
  2. CNV-45703

CPU hotplug pending for restart

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    • Icon: Bug Bug
    • Resolution: Unresolved
    • Icon: Major Major
    • CNV v4.99.0
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    • CNV Virtualization
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    • 0.42
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      Description of problem:

      I understand that CPU hotplugging can only increase the number of cores by up to 4 times the existing number of cores in use. However, when attempting to increase the CPU cores from 4 to more than 16, the change will be pending a restart and cannot be applied, even if the number of cores is reduced to 16 or fewer.

      Version-Release number of selected component (if applicable):

      4.16.4

      How reproducible:

       

      Steps to Reproduce:

      1. Create a VM with 4 core cpu
2. Hotplugging cpu to 17 core 
3. reduce cpu core from 17 to less than 16

      Actual results:

      It still required restart

      Expected results:

      I should do a cpu hotplug successful

      Additional info:

      Check with the slack thread.
      https://redhat-internal.slack.com/archives/C068X44C8VB/p1722840207397249

              sgott@redhat.com Stuart Gott
              rh-ee-swongpai Surote Wongpaiboon
              Kedar Bidarkar Kedar Bidarkar
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                Created:
                Updated: