Backup/Live Recovery fails with the error "The NFS Server Does Not Support MOUNT Version 3 over TCP"

Products

• VMware vSphere ESXi

Issue/Introduction

• vmkernel.log (/var/run/log/vmkernel.log) may report NFS mount failures with messages like:
  
  YYYY-MM-DDT##:##:#### vmkernel: NFS: NFS mount failed for Media Agent appliance IP:/0_mountpath volume ####. Status: Unable to connect to NFS server.
YYYY-MM-DDT##:##:#### vmkernel: NFS: Command: (mount) Server: (Commvault Media Agent appliance IP) IP: Connections: (1) Vmknic: (None) Path: (/0_Esxi FQDN)
  
  
• vSphere Client UI may report  "The server does not support NFS v3 over TCP"  

Environment

VMware vSphere Esxi

Cause

The issue is caused by required TCP ports 111 and 2049 being closed/not configured, preventing proper communication during the Commvault recovery process and will prevent NFS mount operations.

Resolution

Open TCP & UDP ports 111 and 2049 between MediaAgent appliance & ESXi

Additional Information

• The Commvault's JobManager.log reports errors such as:
  Set pending cause [Unable to mount the media as a datastore. Mount failed: Unable to complete Sysinfo operation. Please see the VMkernel log file for more details.: The NFS server does not support MOUNT version 3 over TCP: VSI node (5001:)]

• The Commvault Linux Media Agent’s vsrst.log shows related exceptions during NAS datastore creation:
  VMOperations.CreateNASDatastore() - PlatformConfigFaultFault Exception - [An error occurred during host configuration: .] - [Mount failed: Unable to complete Sysinfo operation. Please see the VMkernel log file for more details.: The NFS server does not support MOUNT version 3 over TCP: VSI node (5001:)]

 

Attempting to mount an NFS share fails with the error: The server does not support NFS v3 over TCP

Required Ports and Use Case-Specific Ports for Commvault