Public/Restore-AzVmSnapshot.ps1
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function Restore-AzVmSnapshot { [CmdletBinding(DefaultParameterSetName = 'VM', SupportsShouldProcess, ConfirmImpact = 'High')] param ( [Parameter(Mandatory, ParameterSetName = 'VM')] [ValidateNotNullOrEmpty()] [string]$VmName, [Parameter(Mandatory, ParameterSetName = 'VM')] [ValidateNotNullOrEmpty()] [string]$ResourceGroupName, [Parameter(Mandatory, ValueFromPipeline, ParameterSetName = 'Snapshot')] [ValidateNotNullOrEmpty()] [Microsoft.Azure.Commands.Compute.Automation.Models.PSSnapshotList]$Snapshot, [Parameter()] [ValidateNotNullOrEmpty()] [switch]$RemoveOriginalDisk ) begin { $ErrorActionPreference = 'Stop' } process { if (-not $PSBoundParameters.ContainsKey('Snapshot')) { ## Find the VM $vm = Get-AzVM -Name $VmName -ResourceGroupName $ResourceGroupName if (-not ($Snapshot = Get-AzVmSnapshot -ResourceGroupName $ResourceGroupName -VMName $vm.Name)) { throw "Could not find snapshot." } } else { $prefixLen = "AzVmSnapshot-".Length $vmName = $Snapshot.Name.substring($prefixLen, $Snapshot.Name.LastIndexOf('-') - $prefixLen) $ResourceGroupName = $Snapshot.ResourceGroupName $vm = Get-AzVM -Name $VmName -ResourceGroupName $ResourceGroupName } ## Find the OS disk on the VM to get the storage type $osDiskName = $vm.StorageProfile.OsDisk.name $oldOsDisk = Get-AzDisk -Name $osDiskName -ResourceGroupName $ResourceGroupName if ($PSCmdlet.ShouldProcess("Snapshot", 'Restore')) { $diskconf = New-AzDiskConfig -AccountType $oldOsDisk.sku.name -Location $oldOsdisk.Location -SourceResourceId $Snapshot.Id -CreateOption Copy Write-Verbose -Message 'Creating new disk...' $newDisk = New-AzDisk -Disk $diskconf -ResourceGroupName $ResourceGroupName -DiskName "$($vm.Name)-$((New-Guid).ToString())" # Set the VM configuration to point to the new disk $null = Set-AzVMOSDisk -VM $vm -ManagedDiskId $newDisk.Id -Name $newDisk.Name # Update the VM with the new OS disk Write-Verbose -Message 'Updating VM...' $null = Update-AzVM -ResourceGroupName $ResourceGroupName -VM $vm # Start the VM Write-Verbose -Message 'Starting VM...' $null = Start-AzVM -Name $vm.Name -ResourceGroupName $ResourceGroupName if ($RemoveOriginalDisk.IsPresent) { if ($PSCmdlet.ShouldProcess("Disk $($oldOsDisk.Name)", 'Remove')) { $null = Remove-AzDisk -ResourceGroupName $ResourceGroupName -DiskName $oldOsDisk.Name } } } } } |