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Question on snapshot creator

Hi folks,

Attached snips of my snapshot report (thanks to LucD​ for his tireless answers) and there is a question about the creator, as I wonder why some VMs listed the creator but some weren't.

At first i reckon maybe the VM snapshots was created a while back, but then there are VMs with creator with snapshot has existed for 129 days.

So this does not sits correctly here.

Does anyone know about this?

Appreciated your advise.


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3 Replies

Although the script you used is not included, I assume that it uses the events to determine which user account created the snapshot.

If the corresponding event for the creation of the snapshot is not found, there will be no user in the report.

There can be a few reasons why that event is not found:

  • the event that corresponds with the snapshot is not present/kept
  • the time between the datetime mentioned in the snapshot, and the creation datatime of the event is too big (the scripts I used to create this kind of report, mostly use 1 minute between the 2 timestamps). Perhaps making the allowed interval between the 2 timestamps will help (but I would have to see the script you are using).

Blog: lucd.info  Twitter: @LucD22  Co-author PowerCLI Reference

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Hi LucD,

here are the scripts which happened you helped me with too Smiley Happy


$currentdate = (Get-Date).tostring("dd-MM-yyyy")

$VIServer = Get-Content -Path C:\Batch\Scripts\snapshots\vcenters.txt

$outputfilename = 'snapshot-report_' + $currentdate + '.html'

$outputfilepath = 'C:\scripts\Output\' + $outputfilename

Write-Host "Connecting to VCenters" -ForegroundColor Yellow

Connect-VIServer $VIServer -WarningAction SilentlyContinue

Write-Host " Complete" -ForegroundColor Green

#Format of HTML table via the ConvertTo-HTML cmdlet

$Header = @"


TABLE {border-width: 1px; border-style: solid; border-color: black; border-collapse: collapse;}

TH {border-width: 1px; padding: 3px; border-style: solid; border-color: black; background-color: #6495ED;}

TD {border-width: 1px; padding: 3px; border-style: solid; border-color: black;}



$report = @()

$now = Get-Date

# Main section

Write-Host "Getting Snapshot" -ForegroundColor Yellow

foreach($vc in $global:DefaultVIServers){

   $ReportVC = Get-VM -Server $vc | Get-Snapshot |

  Select VM,Name,Description,

   @{Label="Size";Expression={"{0:N2} GB" -f ($_.SizeGB)}},


   Get-VIEvent -Start $_.Created.AddMinutes(-1) -Finish $_.Created.AddMinutes(1) |

   where{$_ -is [VMware.Vim.TaskEvent] -and $_.Info.DescriptionId -eq 'VirtualMachine.createSnapshot'} |

   select -Last 1 -ExpandProperty UserName}},

   @{Name="Days Old";Expression={ (New-TimeSpan -End (Get-Date) -Start $_.Created).Days }},


   If (-not $ReportVC)

   {  $ReportVC = New-Object PSObject -Property @{

   VM = "No snapshots found on any VM's in this VCenter"

   Name = ""

   Description = ""

   Size = ""

   Created = ""



   $reportVCHtml = $ReportVC | ConvertTo-Html -Fragment

   $xml = [xml]$reportVCHtml


   for($i=1;$i -lt $rows.count; $i++){


   if($value.Length -gt 0 -and ($now - (Get-Date $value)).TotalHours -gt 72){


   $attr.Value='background-color: red;'




   $reportVCHtml = "<p><h2>Snapshot Report -$($vc.Name)</h2></p><br>" + $xml.OuterXml

   $report+= ConvertTo-Html -Head $Header -Body $reportVCHtml


Write-Host " Complete" -ForegroundColor Green

$sMail = @{

To= 'a@abc.com'

From= 'b@abc.com'

Subject= 'VM snapshots report ' + $currentdate

Body = ($report | Out-String)

BodyAsHtml = $true

smtpServer= 'relay.mail.com'


Write-Host "Sending Email" -ForegroundColor Yellow

#Try to send email

Send-MailMessage @sMail

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You can try changing the length of the interval by changing the 1 and -1 values in this line.

For example

Get-VIEvent -Start $_.Created.AddMinutes(-2) -Finish $_.Created.AddMinutes(2)

Blog: lucd.info  Twitter: @LucD22  Co-author PowerCLI Reference

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