Private/Assert-VMAlreadyExists.ps1
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function Assert-VMAlreadyExists { Param ( [Parameter(Mandatory)] [VM]$VM, [string[]]$HyperVServers ) $ExistingVM = $null $ExistsOn = $null $ExistingCount = 0 $Name = $VM.Name foreach ($hyperVServer in $HyperVServers) { $foundVM = Get-VM -ComputerName $hyperVServer -name $VM.Name -ErrorAction SilentlyContinue if ($foundVM -and $null -ne $foundVM) { $ExistingCount++ $ExistsOn = $hyperVServer $ExistingVM = $foundVM } } if ($ExistingCount -gt 1){ throw "Found multiple existing VM's called $Name - not supported" } return ($ExistingVM, $ExistsOn) } |