Reverting a VM snapshot never completes causing the VM to be in a Partially Powered off status

Products

• VMware Cloud Director

Issue/Introduction

• "Revert snapshot" option does not work which cause the task to run "endless".
• Taking a snapshot on a powered off VM and then attempting to revert the VM with the snapshot will never completes and causing the VM to stay in a powered off state.
• From the debug logs, it is reported the error   "com.vmware.ssdc.library.exceptions.VimInvalidStateException: The operation could not be performed because the object is in an invalid state.
vCenter Server task (moref: task-XXX) failed in vCenter Server '<vcenter_fqdn' (XXX-XXX-XXX-XXXX-XXXXXXXXXXXX).
        at com.vmware.ssdc.library.vim.LmVim.Convert(LmVim.java:362)
        at com.vmware.ssdc.library.vim.LmVim.Convert(LmVim.java:500)
        at com.vmware.vcloud.val.taskmanagement.TaskWaiterInvRecord.CheckForError(TaskWaiterInvRecord.java:176)
        at com.vmware.vcloud.val.internal.impl.VcVimHandle.waitForTask(VcVimHandle.java:144)
        at com.vmware.vcloud.val.internal.impl.ReconfigureVmActivity$ReconfigureVmInVcPhase.reconfigureVm(ReconfigureVmActivity.java:340)
        at com.vmware.vcloud.val.internal.impl.ReconfigureVmActivity$ReconfigureVmInVcPhase.invoke(ReconfigureVmActivity.java:256)
        at com.vmware.vcloud.activity.executors.ActivityRunner.runPhase(ActivityRunner.java:175)
        at com.vmware.vcloud.activity.executors.ActivityRunner.run(ActivityRunner.java:112)
        at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: (vim.fault.InvalidPowerState) {
   faultCause = null,
   faultMessage = null,
   requestedState = poweredOff,
   existingState = poweredOn
}"

• The snapshot are placed on VSAN datastore.

Environment

VMware Cloud Director 10.5.1

Cause

If a vm with a snapshot placed on VSAN datastore, and try to revert the snapshot, new delta file is being created with the same name as the old one. This scenario is not handled in the VmDiskPredicate.

This also cause an issue that the revert snapshot task is not timing out in Cloud Director because timeout handling is not implemented in 10.5 releases.

Resolution

This issue has been resolved in Cloud Director 10.6.1 which is available for download here.

Additional Information

To stop the active task which is running, you may fail the task using the "fail-task" option of the Cell Management Tool . For details see Update the Failure Status of a Task in VMware Cloud Director