CNS volumes fail with error: The specified key, name, or identifier already exists

Products

• VMware vSphere Kubernetes Service

Issue/Introduction

• vCenter tasks related to Cloud Native Storage (CNS) fail repeatedly.
• Users observe the error "The specified key, name, or identifier '[VMDK_PATH]' already exists" preventing volume management operations.

Environment

VMware vCenter Server 

Cause

An internal deadlock within the CNS control plane causes the system to incorrectly identify existing identifiers as conflicts during task execution.

Resolution

• Connect to the vCenter Server Appliance (VCSA) via SSH.
• Execute the following command to restart the vSAN Health service:
  service-control --restart vmware-vsan-health