06 May 2013

Refreshing a Virtual Machine in SCVMM fails with error: 13992

**Scenario:
**

  • You’re using SMB based storage for virtual machines on your Hyper-V hosts
  • You have virtual machines with attached AND shared ISO images on a share or the SCVMM library
  • You remove and re-add the host running the corresponding VMs in SCVMM
  • You re-register the SMB file share to the cluster or host
  • You refresh the virtual machines inventory

 

**Error:
**

Each VM with a previously attached, shared ISO image fails to refresh with the following error message:

As a result the VM is in an “Unsupported VM Configuration” state and there is no way to get rid of the attached ISO within SCVMM Console or SCVMM Powershell CMDLETs.

 

**Reason:
**

It seems that the ISO files previously attached in shared mode have a direct reference to the SMB file share of the virtual machine files, even if the ISO is located on an independent share or SCVMM library share.

 

**Solution:
**

Of course we’ll use Powershell here as we are lazy and don’t want to click around for a fair amount of time.

  1. Get all the VMs with the corresponding error state 
<pre>Get-SCVMHost HV7 | Get-SCVirtualMachine | ? {$_.Status -eq 'UnsupportedSharedFiles'} | Select Name,State,VMHost</pre>
  1. For each affected VM open a Powershell Remote Session to the corresponding host and detach all connected ISO files 
<pre>Get-VMDvdDrive -VMName SomeVMName | Set-VMDvdDrive -Path $null</pre>

If the VM is clustered you have to install the Clustering Powershell Module. (Add-WindowsFeature RSAT-Clustering-Powershell)

Also you’ll get a Warning message while detaching the ISOs on a clustered VM, but you can safely ignore this one.

If someone finds a way to do that in a one liner from remote, please let me know. The Clustering CMDLETS lack in remoting capabilities IMHO.