Failed to mount NFS version 4.1 Datastore: "Operation failed, diagnostics report: Mount failed: Unable to complete Sysinfo operation. Please see the VMKernel log file for more details.: Permission denied: VSI node (5002:)"

Products

• VMware vCenter Server 8.0

Issue/Introduction

Error in vCenter: "An error occurred during host configuration: Operation failed, diagnostics report: Mount failed: Unable to complete Sysinfo operation. Please see the VMKernel log file for more details.: Permission denied: VSI node (5002:)"

vmkernel.log

YYYY-MM-DDTHH:MM:SS. In(182) vmkernel: cpu50:2098640)NFS41: NFS41ProcessExidResult:2397: clientid b0000008d roles 0x10000
YYYY-MM-DDTHH:MM:SS. In(182) vmkernel: cpu50:2098640)NFS41: NFS41ProcessExidResult:2397: clientid b0000008d roles 0x10000
YYYY-MM-DDTHH:MM:SS. Wa(180) vmkwarning: cpu32:2101170 opID=361e6986)WARNING: NFS41: NFS41FSWaitForCluster:4227: Failed to wait for the cluster to be located: Timeout
YYYY-MM-DDTHH:MM:SS. Wa(180) vmkwarning: cpu32:2101170 opID=361e6986)WARNING: NFS41: NFS41_FSMount:5398: NFS41FSDoMount failed: Timeout
YYYY-MM-DDTHH:MM:SS. In(182) vmkernel: cpu50:2098640)NFS41: NFS41_ConnectionRemove:1307: Connection: 0x432967a04a30 [11] addr: tcp xx.xxx.xxx.xxx.x.x
YYYY-MM-DDTHH:MM:SS. In(182) vmkernel: cpu32:2101170 opID=361e6986)StorageApdHandler: 1051: Freeing APD handle 0x432967a032e0 []
YYYY-MM-DDTHH:MM:SS. In(182) vmkernel: cpu32:2101170 opID=361e6986)StorageApdHandler: 1135: APD Handle freed!
YYYY-MM-DDTHH:MM:SS. Wa(180) vmkwarning: cpu32:2101170 opID=361e6986)WARNING: NFS41: NFS41_VSIMountSet:511: NFS41_FSMount failed: Timeout



 

Environment

vSphere 8.x

Cause

There is here an attempt to mount a Datastore using NFS version 4.1 (indicated by the NFS41 prefix).

ESXi is experiencing a network timeout when trying to communicate with the NFS server 

 

Resolution

Datastore added successfully after selecting NFS version 3 in the wizard.

NFSv4.1 requires strict TCP communication, whereas NFSv3 relies heavily on the RPCbind service.

Contact Firewall team and ensure that TCP port 2049 is fully open and unrestricted on any firewalls sitting between the ESXi host and the NFS server.