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  1. XenServer Org
  2. XSO-762

dynamic memory issues on nested virtualized VMs

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    Details

    • Type: Bug
    • Status: Done (View Workflow)
    • Priority: Minor
    • Resolution: Done
    • Affects Version/s: 7.1
    • Fix Version/s: None
    • Component/s: other
    • Labels:
      None

      Description

      Hey lads! I hope you like Inception, here is the symptoms:

       

      1. Using a physical XenServer 7.1
      2. On top of that, using a virtual XenServer 7.1 in nested mode with
        exp-nested-hvm=true

         

      1. When booting a Linux HVM (CentOS 7) on top of that, if memory dynamic max <  static max, the Linux guest kernel starts to acts funny (ultra slow, 10min to boot, a lot of hang tasks inside, seems to have big memory management issues)

      There is absolutely NO issues whatsoever when dynamic max == static max. So I assume there is memory allocation issue in nested mode.

      Does it ring any bell?

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            • Assignee:
              Unassigned
              Reporter:
              olivierlambert Olivier Lambert
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              • Created:
                Updated:
                Resolved: