Basic powershell command to revert to snapshot

[hurdle]

I am starting to learn powershell and have pretty much gone through the entire guide.  The only command I am strugling with is reverting a snapshot.

The VM is currently off

When I try to do what the guide says

$VMs = Get-VM -Location ( Get-ResourcePool DevelopmentResources )

foreach( $vm in $VMs ) { Set-VM -VM $vm -Snapshot ( Get-Snapshot -VM $vm -Name

InitialDevConfig ) }

It replies Unexpected token 'in' in expression or statement

I have been following the guide so the names should work.  I am unsure where it is pulling $vm as it does not have me specify it in the vsphere Admin guide I have be following

When I try

Found something on VMTN that says try:

Set-VM -Snapshot nameofsnap -VM name of vm -Confirm:$falseVM

But when I try I get:

I Get cannot bind parameter 'Snapshot'.  Cannot convert the "snapshot1" value of the type .............

I know there are some complex scripts out there that I could copy and paste but at this point I am trying to learn

I have checked snapshot manager to make sure the snapshot is listed.

Thanks in advance, very frustrated.

[RvdNieuwendijk]

I have tried your first script and it works for me. So I don't think there is something wrong with that.

In the second script you can't use a name of a snapshot behind the -Snapshot parameter. You have to supply a SnapshotImpl object. One that you get from the Get-Snapshot cmdlet. Like you do in the first script. Behind the -VM parameter you can give the name of a VM or a VirtualMachineImpl object that you get from the Get-VM cmdlet. So the -VM parameter and the -Snapshot parameter of the Set-VM cmdlet behave different.

You can rewrite your first script using the pipeline like this:

Get-ResourcePool DevelopmentResources | `
Get-VM | `
ForEach-Object {
  Set-VM -VM $_ -Snapshot (Get-Snapshot -VM $_ -Name InitialDevConfig)
}

Regards, Robert

[hurdle]

That  worked great.

Is there something I can add to the end of the script so I do not have to add Y to confirm?

[mrksiddiqui · Accepted solution]

Here you go:

Get-ResourcePool DevelopmentResources | `
Get-VM | `
ForEach-Object {
  Set-VM -VM $_ -Snapshot  (Get-Snapshot -VM $_ -Name InitialDevConfig ) -Confirm:$false
}