Cloning a virtual machine fails with the error: Invalid configuration for device device_number

Products

• VMware vSphere ESXi

Issue/Introduction

Symptoms:
When performing a clone of a virtual machine or template in a virtual distributed switch (vDS) environment, you may experience one of these symptoms:

• Cloning a virtual machine fails.
• Cold or Hot cloning of a virtual machine fails.
• Cloning a virtual machine from a template fails.
• You may see messages similar to:
  
  [2011-02-23 08:22:45.892 04524 info 'App' opID=2f799c68] [VpxLRO] -- FINISH task-51268 -- vm-9803 -- vim.VirtualMachine.clone -- 54EBBA36-6F9E-4CC4-95DA-653577BD07DE(69DFA38B-CE50-4700-8425-D3BBABD01589)
[2011-02-23 08:22:45.892 04524 info 'App' opID=2f799c68] [VpxLRO] -- ERROR task-51268 -- vm-9803 -- vim.VirtualMachine.clone: vim.fault.InvalidDeviceSpec:
Result:
(vim.fault.InvalidDeviceSpec) {
dynamicType = <unset>,
faultCause = (vmodl.MethodFault) null,
property = "virtualDeviceSpec.device.backing",
deviceIndex = 4,
msg = "Invalid configuration for device 'device_number'."

Environment

VMware ESXi 4.1.x Installable
VMware ESX 4.1.x
VMware vSphere ESXi 5.5
VMware ESXi 4.1.x Embedded
VMware vSphere ESXi 5.0

Cause

During the clone procedure, a vDS port requires a reservation. This issue occurs if the reservation expires too quickly.

Resolution

This issue is resolved in:

• VMware vCenter Server 5.1
• VMware vCenter Server 5.0 Update 1
• VMware vCenter Server 4.1 Update 3

To work around this issue when you are unable to upgrade:

• Remove the virtual machine from the vDS portgroup and add it to a virtual machine portgroup on the Standard vSwitch.
• Clone the virtual machine.
• After the clone operation completes, revert the virtual machine to the vDS portgroup
  
  Note: Issue has been seen while using ESXi 5.5
  
  
  
  

Additional Information

To be alerted when this document is updated, click the Subscribe to Article link in the Actions box仮想マシンのクローン作成が次のエラーで失敗する：デバイス device_number では無効な構成です