Problem converting LSI to pvscsi

[bstarratt]

I am using some code from <[http://www.lucd.info/2009/12/08/switching-to-the-paravirtual-scsi-controller/]> on vSphere 4.1. I have tried it on a number of very vanilla VMs and receive the following output when trying to convert a controller to paravirtual:

Exception calling "ReconfigVM" with "1" argument(s): "Invalid configuration for device '2'."

At line:33 char:15

+ $vm.ReconfigVM <<<< ($spec)

+ CategoryInfo : NotSpecified: ( [], MethodInvocationException

+ FullyQualifiedErrorId : DotNetMethodException

Code to add and remove pvscsi controllers works fine on this VM. Does anyone have any suggestions or confirmation that this code will still work on vSphere 4.1? I can manually change the controller type in VC without issue. Thanks.

$vmName = "myvm"

$ctrlName = "SCSI controller 0"

$vm = Get-VM $vmName | Get-View

#Get the controller and the devices connected to it

$vm.Config.Hardware.Device | where {$_.DeviceInfo.Label -eq $ctrlName} | % {

$oldCtrl = $_

$ctrlKey = $_.Key

$devs = @()

$_.Device | % {

$devKey = $_

$vm.Config.Hardware.Device | where {$_.Key -eq $devKey} | % {

$devs += $_

}

}

}

#Create the specification for the device changes

$spec = New-Object VMware.Vim.VirtualMachineConfigSpec

#Remove old controller

$old = New-Object VMware.Vim.VirtualDeviceConfigSpec

$old.device = $oldCtrl

$old.operation = "remove"

$spec.DeviceChange += $old

#Update the devices connected to the controller

$devs | % {

$dev = New-Object VMware.Vim.VirtualDeviceConfigSpec

$dev.device = $_

$dev.device.ControllerKey = - 100

$dev.operation = "edit"

$spec.DeviceChange += $dev

}

#Add new controller

$new = New-Object VMware.Vim.VirtualDeviceConfigSpec

$new.Device = New-Object VMware.Vim.ParaVirtualSCSIController

$new.Device.Key = - 100

$new.operation = "add"

$spec.DeviceChange += $new

$vm.ReconfigVM($spec)

[LucD · Accepted solution]

Thanks for reporting this.

vSphere 4.1 seems to require the controllerKey and unitNumber properties on the new controller as well.

Can you give the updated script below a try ?

$vmName = "MyVM"
$ctrlName = "SCSI controller 0"

$vm = Get-VM $vmName | Get-View

# Get the controller and the devices connected to it
$vm.Config.Hardware.Device | where {$_.DeviceInfo.Label -eq $ctrlName} | % {
	$oldCtrl = $_
	$ctrlKey = $_.Key
	$devs = @()
	$_.Device | % {
		$devKey = $_
		$vm.Config.Hardware.Device | where {$_.Key -eq $devKey} | % {
			$devs += $_
		}
	}
}

# Create the specification for the device changes
$spec = New-Object VMware.Vim.VirtualMachineConfigSpec

# Remove old controller
$old = New-Object VMware.Vim.VirtualDeviceConfigSpec
$old.device = $oldCtrl
$old.operation = "remove"
$spec.DeviceChange += $old

# Update the devices connected to the controller
$devs | % {
	$dev = New-Object VMware.Vim.VirtualDeviceConfigSpec
	$dev.device = $_
	$dev.device.ControllerKey = - 100
	$dev.operation = "edit"
	$spec.DeviceChange += $dev
}

# Add new controller
$new = New-Object VMware.Vim.VirtualDeviceConfigSpec
$new.Device = New-Object VMware.Vim.ParaVirtualSCSIController
$new.Device.Key = - 100
$new.Device.ControllerKey = $oldCtrl.ControllerKey
$new.Device.UnitNumber = $oldCtrl.UnitNumber
$new.operation = "add"
$spec.DeviceChange += $new

$vm.ReconfigVM($spec)

____________

Blog: LucD notes

Twitter: lucd22

[LucD]

Fyi, the Switching to the Paravirtual SCSI Controller post has been updated.

____________

Blog: LucD notes

Twitter: lucd22

[bstarratt]

I will test this in my environment later today. I was hoping you would see and answer my question. Thanks in advance!

[LucD]

Have a look at the latest comments in that post as well.

Some of the limitations seem to be removed with vSphere 4.1 !

____________

Blog: LucD notes

Twitter: lucd22

[bstarratt]

Worked like a charm! Thank you so much!