Error "Internal Server Expected - Expected completed future, but received future which is still in progress." when reverting snapshot on VMs in VMware Cloud Director

Products

• VMware Cloud Director

Issue/Introduction

• When the revert to snapshot task is initiated in VMware Cloud Director(VCD) the task stays in a running state.

• Task does not finish in VCD even after a long time

• VM cannot be powered on or deleted from VCD

• In vCenter, the task is successfully initiated but there are no other tasks/events related to the snapshot.

• Snapshot creation and revert works as expected directly from the vCenter.

• The issue affects new VMs both created from template, fresh VMs with VMTools installed as well as existing VMs. 

• The revert task is failing with the error below:

  Internal Server Expected - Expected completed future, but received future which is still in progress.


Environment

VMware Cloud Director 10.6
VMware Cloud Director 10.5

Cause

There is a known issue with the revert snapshot logic when vSAN storage is used.

Resolution

Workaround: As the task completes from the VC side successfully, the snapshots reverted and the VM is manageable, the error can be ignored. 

This will be fixed in a future release of VMware Cloud Director.