Well, on Friday I had a short chat with someone from one of our application departments, stating he wanted a backup copy of a VM (ain’t to hard), but a) they don’t want any downtime and b) it has to be identical to the original.
So I sat down today, googled for a bit and actually found something that pretty much does what I want, though I had to fix it up a bit … So find attached a script, which creates a hot-clone from a snapshot and then only if the latest clone was successful deletes the old one.
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param( [string] $vCenter ) # Add the VI-Snapin if it isn't loaded already if ( (Get-PSSnapin -Name "VMware.VimAutomation.Core" -ErrorAction SilentlyContinue) -eq $null ) { Add-PSSnapin -Name "VMware.VimAutomation.Core" } if ( !($vCenter) ) { Write-Host "" Write-Host "vm-create-snapshot-clone: <vcenter> <VM-Name> <Target Datastore>" Write-Host " <vcenter> - Hostname of the vCenter Server instance for this script" Write-Host " to work on." Write-Host "" exit 1 } # Based on http://www.simonlong.co.uk/blog/2010/05/05/powercli-a-simple-vm-backup-script/ # Import Backup CSV $backupinfo = Import-Csv C:ScriptsTEMPbackupvms.csv #Set Date format for clone names $date = Get-Date -Format "yyyyMMdd" #Set Date format for emails $time = (Get-Date -f "HH:MM") #Connect to vCenter Connect-VIServer $vCenter foreach ($customer in $backupinfo) { $vm = Get-VM $customer.MasterVM $SCRIPTS = "C:ScriptsTEMP$( $customer.MasterVM ).txt" # Create new snapshot for clone $vm | New-Snapshot -Name "Clone Snapshot" -Description (get-date -format "'Created: 'yyyy-MM-dd HH:mm") # Get managed object view $vmView = $vm | Get-View # Get folder managed object reference $cloneFolder = $vmView.parent # Build clone specification $cloneSpec = new-object Vmware.Vim.VirtualMachineCloneSpec $cloneSpec.Snapshot = $vmView.Snapshot.CurrentSnapshot # Make linked disk specification $cloneSpec.Location = new-object Vmware.Vim.VirtualMachineRelocateSpec $cloneSpec.Location.Datastore = (Get-Datastore -Name $customer.BackupDS | Get-View).MoRef $cloneSpec.Location.Transform = [Vmware.Vim.VirtualMachineRelocateTransformation]::sparse $cloneName = "$vm-$date" # Create clone $vmView.CloneVM( $cloneFolder, $cloneName, $cloneSpec ) if (( Test-Path -Path $SCRIPTS) -ne $true ) { $cloneName | Out-File $SCRIPTS } else { $old_vm = Get-Content $SCRIPTS $cloneName | Out-File $SCRIPTS Get-VM $old_vm | Remove-VM -DeletePermanently -Confirm:$false } # Remove Snapshot created for clone Get-Snapshot -VM $vm -Name "Clone Snapshot" | Remove-Snapshot -confirm:$False } #Disconnect from vCenter Disconnect-VIServer -Server $vCenter -Confirm:$false |
The backupvms.csv looks pretty simple:
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; html-script: false ]MasterVM,BackupDS sles11-sp1,datastore2-nfs sles10-sp4,datastore1-nfs |