RHOCP 4 Operator pods blocking the unmount of CSI volumes

Solution Verified - Updated -

Issue

  • Mounts not removed due to OpenShift processes still accessing mounpoint.
  • CSI volumes cannot be mounted with errors mpatha: map in use and mpatha: can't flush.
  • Multipath is not able to flush unmouted volumes because kept busy by ovnkube.

Environment

  • Red Hat OpenShift Container Platform (RHOCP) 4

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