Why are OpenShift Virtualization virtual machines using 4K disks getting paused intermittently?

Solution Verified - Updated -

Issue

  • OpenShift Virtualization virtual machines using 4K disks are getting paused intermittently.
  • Issue is observed on virtual machines using Portworx storage.

Environment

  • Red Hat OpenShift Container Platform 4.12
    • OpenShift Virtualization 4.12.
  • Red Hat OpenShift Container Platform 4.13
    • OpenShift Virtualization 4.13.
  • Red Hat OpenShift Container Platform 4.14.
    • OpenShift Virtualization 4.14.
  • Red Hat OpenShift Container Platform 4.15.
    • OpenShift Virtualization 4.15.

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