I have been updating my function that extends the Hyper-V PowerShell module cmdlet Move-VMStorage. A while ago I made a blog post about that I think that the folders on the source directory should be removed when doing a Live Storage Migration or you will get a mess with empty VM folders after a while and that can cause some confusion for the admins.

The updates in this script function are the following:

• I will not delete folders if they do not reside within a folder with the VM´s name (In the earlier version I just deleted and that recursive with no questions asked which could have some consequences )
• And if the folder was the default or named with another name you will get an output that tells you to clean manually
• If you do not give the VM´s Name in the -Path parameter I will add that for you to get a nice and tidy folder structure

Here is a screendump on the updated function in action

And here you can see what happens if I move from a folder that is not named after the VM´s name

And here is a screendump of the folders that are left in the c:\vms that you need to manually delete and you might want to check that not another vm is residing inside these folders before removing them 😛

    <#
    .Synopsis
       An updated Move-VMStorage function
    .DESCRIPTION
       To also remove the folder where the VM was residing this function also deletes the folder after moving the VM
       This function also helps you in creating a folder in the path if forgotten
    .EXAMPLE
       Move-VMStorage2 -VMName test -ComputerName HV02 -Path \\SMB-srv01\VMs\test
    .NOTES
    Author: Niklas Akerlund 20130226
    Version: 0.2
    #>
    function Move-VMStorage2
    {
        [CmdletBinding()]
        [OutputType([int])]
        Param
        (
            # A name of a VM
            [Parameter(Mandatory=$true,
                       ValueFromPipelineByPropertyName=$true,
                       Position=0)]
            $VMName,
            # The name of the Hyper-V host
            [Parameter(Mandatory=$false,
                       ValueFromPipelineByPropertyName=$true,
                       Position=1)]
            $ComputerName = "localhost",
            # The path where the VM is going to be relocated to.
             [Parameter(Mandatory=$true,
                       ValueFromPipelineByPropertyName=$true,
                       Position=2)]
            [string] $Path
        )
    
            # Lets move and tidy the source folder
            $VM = Get-VM $VMName -ComputerName $ComputerName
            # For some reason the path does not get refreshed when moving one VM several times in the same console that is why i do a select *
            $VMOldPath = Get-VM $VMName -ComputerName $ComputerName | select * -ExpandProperty Path 
                    
            if ($Path -notmatch $VM.VMName){
                $Path = $Path + "\" + $VM.VMName
                Move-VMStorage -VM $VM -DestinationStoragePath $Path
            }else{
                Move-VMStorage -VM $VM -DestinationStoragePath $Path
            }
            
            if (($VMOldPath.StartsWith("\\")) -and $VMOldPath -match $VM.VMName) {
               Remove-Item -Path $VMOldPath -Recurse -Force
            }elseif ($VMOldPath -match $VM.VMName){
                Invoke-Command -ComputerName $VM.ComputerName -ScriptBlock {Remove-Item -Path $Using:VMOldPath -Recurse -Force}
            }else{
                Write-Host "The VM :" $VM.VMName " was in the following path " $VMOldPath " Clean it manually!"
            }
            
    }