ESXi upgrade to 7.x fails with PSOD (purple screen of death) while "loading nfsclient"

Products

• VMware vSphere ESXi

Issue/Introduction

Symptoms:
While Upgrading HPE simplivity Host from 6.7 to 7.x, upgrade fails with PSOD (purple screen of death) while the installer is at "loading nfsclient"

You may find the below instances on the "configstore-upgrade.log (ESXI: /var/run/log)

yyyy-mm-ddT00:00:00.000Z In(05) host-2097945 [ConfigStore:364833206272:] [2097945][/usr/lib/vmware/configmanager/upgrade/lib/libupgradenfsv41config.so] Invok
ing upgrade.
yyyy-mm-ddT00:00:00.000Z In(05) host-2097945 [ConfigStore:364833206272:] [2097945][/usr/lib/vmware/configmanager/upgrade/lib/libupgradenfsv41config.so] Invok
ing UpgradeConfig
yyyy-mm-ddT00:00:00.000Z Er(02) host-2097945 [ConfigStore:364833206272:] [1083]Validation Error: '/username' String length longer than maximum: 20
yyyy-mm-ddT00:00:00.000Z Er(02) host-2097945 [ConfigStore:364833206272:] [1089] Failed to validate Set
yyyy-mm-ddT00:00:00.000Z In(05) host-2097945 [ConfigStore:364833206272:] ConfigStoreException: [context]zKq7AVICAgAAACzgJAEJY29uZmlnc3RvcmUAAFK3AGxpYmNvbmZpZ3N0b3JldXBncmFkZS5zbwAAPLsAAdQcB2xpYmNvbmZpZ3N0b3JlLnNvAAHekgMBQGUGArk7AGxpYnVwZ3JhZGVuZnN2NDFjb25maWcuc28AA7geAGNvbmZpZ1VwZ3JhZGVSdW5uZXIABI0cAmxpYmMuc28uNgADLSIA[/context]
yyyy-mm-ddT00:00:00.000Z Er(02) host-2097945 [ConfigStore:364833206272:] [2097945][/usr/lib/vmware/configmanager/upgrade/lib/libupgradenfsv41config.so] Upgrade failed rc: 1

Environment

VMware vSphere ESXi 7.x

Cause

• The max length of nfs41 username allowed in configstore is 20.
• The /nfs41/user = "[email protected]" username specified by customer during the simplivity plugin installation was having more than 20 characters under etc/vmware/esx.conf .

Resolution

->Use a different user name which has less than or equal to 20 characters, for Simplivity plugin deployment.

->Update the same user in  /etc/vmware/esx.conf

Impact/Risks:
Upgrade will fail until this value is changed to less than or equal to 20 characters

Additional Information