DSCResources/POSHOrigin_vSphere_VM/Helpers/_GetGuestDiskToVMDiskMapping.ps1
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function _GetGuestDiskToVMDiskMapping { [cmdletbinding()] param ( [Parameter(Mandatory)] [ValidateNotNull()] $vm, [Parameter(Mandatory)] [ValidateNotNullOrEmpty()] [string]$DiskSpec ) try { $vmView = $vm | Get-View -Verbose:$false -Debug:$false $configDisks = ConvertFrom-Json -InputObject $DiskSpec -Verbose:$false $vmDisks = @($vm | Get-HardDisk -Verbose:$false -Debug:$false) # Create our disk configuration objects that will be passed into the guest OS # via VM tools. The Guest will then format the drives based on the instructions $diskInstructions = @() foreach ($scsiController in ($vmView.Config.Hardware.Device | Where-Object {$_.DeviceInfo.Label -match "SCSI Controller"})) { foreach ($diskDevice in ($vmView.Config.Hardware.Device | Where-Object {$_.ControllerKey -eq $scsiController.Key})) { $disk = [pscustomobject]@{ DiskName = $diskDevice.DeviceInfo.Label DiskSizeGB = $diskDevice.CapacityInKB / 1024 / 1024 SCSIController = $scsiController.BusNumber SCSITarget = $diskDevice.UnitNumber VolumeName = $null VolumeLabel = $null BlockSize = $null } # Find matching disk from configuration $matchingDisk = @( $configDisks | Where-Object {$_.Name -eq $disk.DiskName} ) #Shouldn't happen, but just in case.. if ($matchingDisk.count -gt 1) { Write-Error -Message "Too many matches: $($matchingDisk | Select-Object Name, SizeGB, Type, Format | Out-String)" } elseif($matchingDisk.count -eq 1) { $disk.VolumeName = $matchingDisk.VolumeName $disk.VolumeLabel = $matchingDisk.VolumeLabel $disk.BlockSize = $matchingDisk.BlockSize } else { Write-Error -Message 'VM has a disk that is not part of the configuration. Either add this disk to the configuratino or remove the disk from the VM.' } $diskInstructions += $disk } } return $diskInstructions } catch { Write-Error -Message 'There was a problem getting the guest disk mapping' Write-Error -Message "$($_.InvocationInfo.ScriptName)($($_.InvocationInfo.ScriptLineNumber)): $($_.InvocationInfo.Line)" write-Error $_ } } |