Simple powershell script to get a snashot total size per volume

Andrey_y · ‎2015-05-20

I wonder if anyone could post a script that does simple thing - list of volumes per FAS with Snapshot Total size and may be a number of Shapshots per each volume.

Thanks for the help!

Aparajita · ‎2015-05-21

Hi Andrey,

If you are looking for an output like

Controller          Vserver::Volume               SpaceOccupiedBySnapshot                      TotalSnapshots
----------          ---------------               -----------------------                      --------------
10.238.48.40        aparajir-vvsim-01::vol0       1.8 GB                                                   16
10.238.48.40                  aparajir-vvsim-02::vol0       1.8 GB                                                   16
10.238.48.40                  cifs_vs::cifs_vs0             716.0 KB                                                 10
10.225.183.84                 vs_inf::vs1_ns                1.6 MB                                                   10
10.225.183.84                 vs_inf::vs1_ns_mirror0001     1.6 MB                                                   11

script below ought to do the trick

$controllers = @{ 
"10.238.48.40" = $credential1
"10.225.183.84" = $credential2
}

foreach ($controller in $controllers.Keys) {

 $conn = Connect-NcController $controller -Credential $controllers[$controller]

 $vols = Get-NcVol
 foreach ($vol in $vols) {
 $measure = Get-NcSnapshot $vol.Name | Measure-Object Total -Sum
 $op = New-Object psobject
 Add-Member -InputObject $op -Name Controller -MemberType NoteProperty -Value $global:CurrentNcController.Name
 $volName = $vol.Vserver + "::" + $vol.Name
 Add-Member -InputObject $op -Name "Vserver::Volume" -MemberType NoteProperty -Value $volName
 $totalSpace = ConvertTo-FormattedNumber $measure.Sum DataSize "0.0"
 Add-Member -InputObject $op -Name SpaceOccupiedBySnapshot -MemberType NoteProperty -Value $totalSpace
 Add-Member -InputObject $op -Name TotalSnapshots -MemberType NoteProperty -Value $measure.Count
 Write-Output $op
 }
}

This script is for Clustered DataONTAP. If you are running a 7-mode controller, it shouldn't be too difficult to adapt this. Also, if you are interested in a report, you may want to output as CSV, rather than creating an output object.

Hope this helps,

Aparajita