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Cozumpark Bilisim Portali
Online VM migration between Hyper-V v3 Clusters
Posted in Virtual Machine Manager, Windows Powershell, Windows Server | No Comment | 1,284 views | 30/09/2013 15:17

You should run this script on Cluster node. Migrates all VM online.

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# Configuration
$DestinationCluster = "cluster.domain.com"
 
# Get Host and Cluster Information
$Hostname = (Get-VMHost).Name
$SourceCluster = (Get-Cluster $Hostname).Name
 
# Create VM Array
$VMArray = New-Object System.Collections.ArrayList
$VMArray.Clear();
 
# Get VMs and Add to VM Array
$VMs = Get-VM | Where {(($_ | Select -Expand HardDrives).Path -like "Disk*") -or (($_ | Select -expand FibreChannelHostBusAdapters) -ne $Null)}
$AddArray = $VMs | % {$VMArray.Add($_.Name)}
 
# Get All Virtual Machines
$AllVMs = Get-VM
foreach ($VM in $AllVMs)
{
	# Get VM and Cluster Information
	$VMName = $VM.Name
	$HyperVHost = $VM.ComputerName
	$VMState = $VM.State
	$ClusterGroup = Get-ClusterGroup | where Name -like "*$VMName*"
 
	if ($VMArray.Contains($VMName) -eq $False)
    {
		# Remove from Cluster Resources
		if ($ClusterGroup)
		{
			Get-ClusterGroup $ClusterGroup.Name -Cluster $SourceCluster | Remove-ClusterGroup -RemoveResources -Force
		}
 
		Write-Host " "
		Write-Host Working on $VMName ..
 
		# Get Volume and Memory Information
		$Volume = ((Get-ClusterSharedVolume -Cluster $DestinationCluster | Select -ExpandProperty SharedVolumeInfo | Select @{label="Name";expression={(($_.FriendlyVolumeName).Split("\"))[-1]}},@{label="FreeSpace";expression={($_ | Select -Expand Partition).FreeSpace}} | Sort FreeSpace -Descending)[0]).Name
		$DestinationNode = ((Get-Cluster $DestinationCluster | Get-ClusterNode | Select Name,@{label="FreeMemory";expression={([math]::round(((Get-WmiObject -ComputerName $_.Name -Class Win32_OperatingSystem).FreePhysicalMemory / 1KB), 0))}} | Sort FreeMemory -Descending)[0]).Name
 
		# Move Virtual Machine
		Move-VM $VMName -ComputerName $HyperVHost -DestinationHost $DestinationNode -IncludeStorage -DestinationStoragePath C:\ClusterStorage\$Volume\$VMName
 
		# Add to Destination Cluster Resources
		Add-VMToCluster $VMName -Cluster $DestinationCluster
 
		Write-Host Done.
	}
	else
    {
		Write-Host " "
		Write-Host Skipping $VMName ..
	}
}

After migration, VM will be started on destination host.



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