NAS mount are not mounting on all host

Products

• VMware vSphere ESXi

Issue/Introduction

NAS mounts are not being mounted with the same name on all hosts, instead, a duplicate NAS mount is being created with the name appended by (1)

Environment

ESXi 8.x

ESXi 7.x

Cause

For NFS 4.1 shares the UUID is generated from the share filehandle information, when the filehandle information changes a new UUID is generated, causing hosts that are mounting the datastore to append the datastore name with (1) to differentiate the different UUIDs.

 

On the NetApp storage array NFS shares went from having the qtree-export setting disabled to having the setting enabled, this changed the filehandle from 40 bytes to 48 bytes causing new mounts to have a different UUID.

Resolution

Unmount datastore from each host and preform rolling reboot on hosts to clear NFS details then remount the NFS share.