vSphere PowerCLI w/ vi toolkit extensions '74794', Get-TkeSnapshotExtended errors with Add-Member SizeMB already exists

[KRichardson5280]

I'm attempting to generate a report of all snapshots in the ESX environment.

1) Installed PowerShell 2.0 for Windows XP

2) Installed VMware PowerCLI 4.0 U1

3) Installed VMware VI Toolkit for Windows 1.5

4) Added PSSnapin VMware.VimAutomation.Core

5) Imported Module viToolkitExtensions.psm1 version 74794

6) Found community recommended command of "Get-VM | Get-TkeSnapshotExtended | select Name, VM, SizeMB"

This does work! However powershell returns to following error between each snapshot result:

Add-Member : Cannot add a member with the name "SizeMB" because a member with that name already exists. If you want to

overwrite the member anyway, use the Force parameter to overwrite it.

At C:\WINDOWS\system32\WindowsPowerShell\v1.0\Modules\viToolkitExtensions\viToolkitExtensions.psm1:2453 char:20

+ $s | add-member <<<< -type noteproperty -name "SizeMB" -value ($totalSize / 1mb)

+ CategoryInfo : InvalidOperation: (o7%2f14%2f2010:PSObject) , InvalidOperationException

+ FullyQualifiedErrorId : MemberAlreadyExists,Microsoft.PowerShell.Commands.AddMemberCommand

Does anyone know what causes this or how to resolve it?

[LucD · Accepted solution]

The problem you're seeing is that the object returned by

Get-VM <vmname> | Get-Snapshot

already contains a property called SizeMB in PowerCLI 4u1.

The easiest solution is to comment out that line in the viToolkitExtensions.psm1 file, like this

# Add this to the input object and pass it through.
# $s | add-member -type noteproperty -name "SizeMB" -value ($totalSize / 1mb)
$s

But in fact the complete Community Extensions need a review.

With PowerCLI 4.1 the module won't work at all since all the object types have been changed.

Btw there is no need to install VI Toolkit 1.5 and PowerCLI 4.0u1. Both are different versions of the same product.

The confusion most probably comes from the name change that occurred when PowerCLI 4.0 was released.

____________

Blog: LucD notes

Twitter: lucd22

[KRichardson5280]

LucD, Thank you very much for the quick response!