Virtual Machine failed to power on due to NFSLock

Products

• VMware vSphere ESXi

Issue/Introduction

• Virtual Machine failed to power.
• In the /var/log/vmkernel log file, there are entries similar to:

WARNING: NFSLock: ####: File is being locked by a consumer on host <ESXi hostname-01> with read-only lock.

 

Environment

VMware vSphere ESXi 7.0.3

Cause

There is this VM process running on <ESXi hostname-01>.
Example:
lsof | grep <Virtual Machine Name>
####  hostd  FILE  ## /vmfs/volumes/<Datastore>/<Virtual Machine Name>/####-flat.vmdk

Resolution

• Restart hostd service on <ESXi hostname-01>.
• Reboot <ESXi hostname-01>.