# This script requires PowerCLI 4.0 U1
#
# Create VM Disk Mapping v2.1
# Created by Arnim van Lieshout
# Http://www.van-lieshout.com
#
# Did you ever got a request to extend a disk on a VM?
# Most probably you were asked to extend Windows disk number x
# Unfortunately this Windows disk number doesn't correspond to the virtual disk number of your VM.
# Finding out which virtual disk in the VM's settings corresponds to this Windows disk can be a cumbersome task.
# Especially when you have multiple SCSI controllers and/or many disks attached to your VM
#
# This script matches Windows disks and their VMware virtual disk counterparts.
# It uses the Invoke-VMScript cmdlet to retrieve WMI information from the Windows guest, so there is no network connection needed to the VM
# This makes the script suitable for isolated guests too (Internal only network, DMZ, or otherwise seperated by firewall).
#
# Multiple vCenter- or ESX(i)-servers can be added to the $VCServerList array, so there's no need to know which host or vCenter manages your VM
# Initialize variables
# $VCServerList is a comma-separated list of vCenter- or ESX(i)-servers
$VCServerList = "10.10.10.10"
$DiskInfo= @()
# Set Default Server Mode to Multiple
#Set-PowerCLIConfiguration -DefaultVIServerMode Multiple -Confirm:$false | Out-Null
# Connect to vCenter Server(s)
foreach ($VCServer in $VCServerList) {Connect-VIServer -Server "$VCServer" | Out-Null}
# Ask for VM to create diskmapping for
$Vm = Read-Host "Enter VMName to create disk mapping for"
if (($VmView = Get-View -ViewType VirtualMachine -Filter @{"Name" = $Vm})) {
# Get the ESX host which the VM is currently running on
$ESXHost = Get-VMHost -id $VmView.Summary.Runtime.Host
# Get credentials for host and guest
$HostCred = $Host.UI.PromptForCredential("Please enter credentials", "Enter ESX host credentials for $ESXHost", "root", "")
$GuestCred = $Host.UI.PromptForCredential("Please enter credentials", "Enter Guest credentials for $VM", "", "")
#Get WMI info using Invoke-VMScript, so no network connection to the VM is needed
$Error.Clear()
$Out = Invoke-VMScript "wmic path win32_diskdrive get Index, SCSIPort, SCSITargetId /format:csv" -vm $VM -HostCredential $HostCred -GuestCredential $GuestCred -scripttype "bat"
if (!$error) {
#Export plaintext WMI disk info to temporary file and import it again using the Import-Csv CmdLet
$FileName = [System.IO.Path]::GetTempFileName()
$Out.Substring(2) > $FileName
$WinDisks = Import-Csv $FileName
Remove-Item $FileName
#Create DiskMapping table
foreach ($VirtualSCSIController in ($VMView.Config.Hardware.Device | where {$_.DeviceInfo.Label -match "SCSI Controller"})) {
foreach ($VirtualDiskDevice in ($VMView.Config.Hardware.Device | where {$_.ControllerKey -eq $VirtualSCSIController.Key})) {
$VirtualDisk = "" | Select SCSIController, DiskName, SCSI_Id, DiskFile, DiskSize, WindowsDisk
$VirtualDisk.SCSIController = $VirtualSCSIController.DeviceInfo.Label
$VirtualDisk.DiskName = $VirtualDiskDevice.DeviceInfo.Label
$VirtualDisk.SCSI_Id = "$($VirtualSCSIController.BusNumber) : $($VirtualDiskDevice.UnitNumber)"
$VirtualDisk.DiskFile = $VirtualDiskDevice.Backing.FileName
$VirtualDisk.DiskSize = $VirtualDiskDevice.CapacityInKB * 1KB / 1GB
# Match disks based on Controller and SCSI ID
$DiskMatch = $WinDisks | ?{($_.SCSIPort – 1) -eq $VirtualSCSIController.BusNumber -and $_.SCSITargetID -eq $VirtualDiskDevice.UnitNumber}
if ($DiskMatch){
$VirtualDisk.WindowsDisk = "Disk $($DiskMatch.Index)"
}
else {Write-Host "No matching Windows disk found for SCSI id $($VirtualDisk.SCSI_Id)"}
$DiskInfo += $VirtualDisk
}
}
#Display DiskMapping table
$DiskInfo | Out-GridView
}
else {Write-Host "Error Retrieving WMI info from guest"}
}
else {Write-Host "VM $Vm Not Found"}
Disconnect-VIServer * -Confirm:$false
Hope that helps.
/* Please feel free to provide any comments or input you may have. */
