Virtual Machine Powered off after vMotion

Products

• VMware vSphere ESXi

Issue/Introduction

Virtual Machine powered off after vMotion attempt 

VM has been terminated with event : com.vmware.vc.HA.RemediatedDupVMs during/after vMotion with VMs running on NFS datastores.

May see the following events on the VM from vSphere HA:

 

Cause

Split-brain workflow was designed with the assumption that the VM lock (.lck) is held by only the owner host of the VM. If "lockType" is exclusive, it assumes that vMotion has finished and the destination host has acquired lock on .lck file in EXCLUSIVE mode. This assumption is true for VMFS and vSan. In the NFS datastore, the VM lock (.lck) file can be held by any host, so split-brain workflow requires alternate means to ensure that it does not invoke termination during vMotion and the owner host can be determined correctly.

Resolution

1. Log in to VMware vSphere Web Client.

2. Take a snapshot of the vCenter VM

3. Navigate to the cluster object: Home > vCenter > Clusters.

4. Select the cluster encountering the issue

5. Select Manage.

6. Select vSphere HA

7. Select Edit

8. Select Advanced Options

9. Click Add and the enter the below value.

das.config.fdm.enableDupVmDetection = false

10. Disable vSphere HA on the cluster by deselecting "Turn ON vSphere HA"

11. Wait a few minutes for the task to complete.

12. Enable vSphere HA on the cluster again.