Migration was temporarily disabled due to another migration activity. vGPU hot migration is not enabled.

Products

• VMware vSphere ESXi
• VMware vCenter Server

Issue/Introduction

• When attempting to migrate a VM with vGPU, the migration wizard shows compatibility issues:
  "Migration was temporarily disabled due to another migration activity. vGPU hot migration is not enabled."
"A warning or error occurred when migrating the virtual machine. Virtual machine relocation, or power on after relocation or cloning can fail if vGPU resources are not available on the destination host."
  
  

Environment

• vCenter 8.x
• vCenter 9.x
• ESXi 8.x
• ESX 9.x

Cause

This issue occurs when the vgpu.hotmigrate.enabled advanced setting in vCenter is set to false

Resolution

To resolve this issue the "vgpu.hotmigrate.enabled" will need to be set to "true"

1. Select the vCenter server object ( top-level inventory entity with the name of the vCenter)
2. Click the Configure tab
3. Choose Advanced System Settings.
4. Select Edit and filter the "Name" column for "vgpu.hotmigrate.enabled"
5. Verify if the value is "false" change it to "true" 
   Note: This change takes effect immediately and does not require a restart of vCenter services

Additional Information

Using vSphere vMotion to Migrate vGPU Virtual Machines