Nutanix VM streaming backups failing with Mount issues

Hello All,

I have configured the Nutanix VM streaming backups by using the Hyperscale nodes as VSA proxy. The backup got failed with below error:

7717 1e71 12/29 16:46:56 104 CNutanixInfo::_MountVM_Streaming() - Mounting Disk [scsi-0] [f87c9f9b-e15f-4e13-afde-cbc18af752bd] fileName [/SPIProduction/.snapshot/98/6993716522296088412-1603969612779858-74798/.acropolis/vmdisk/f87c9f9b-e15f-4e13-afde-cbc18af752bd] 7717 1e71 12/29 16:46:59 104 CNFSMounter::_Mount_Unix() - failed to run mount command [timeout 30 mount -t nfs -o vers=3,ro,soft,retrans=5,timeo=600 XX.XX.XX.X:/SPIProduction /opt/commvault/ProductionData/VSA_NFSMountPoint/7717/10.94.10.5__SPIProduction] - Error: mount.nfs: access denied by server while mounting XX.XX.XX.X:/SPIProduction 7717 1e71 12/29 16:46:59 104 CNutanixInfo::_MountVM_Streaming() - Failed to mount XX.XX.XX.X:/SPIProduction

As per documentation these are the system requirements for the VSA

• VSA proxies must have access to NFS exports from the NFS server.
• The proxy machine must be able to access the NFS ports for the destination NFS server behind any firewall configuration.
• When running as root, libnfs tries to allocate a system port for its connection to the NFS server. When running as non-root, libnfs uses a normal ephemeral port. By default, many NFS servers do not allow non-system ports to connect. For these NFS servers, you must use the "insecure" export option in /etc/exports to allow libnfs clients to connect

Hence I would like to know whether the mount issue is at HSX VSA node and do we need to provide any additional permissions?

Network communications are all good between the CS, BLOCK and Nutanix cluster.

Regards

Ananth