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1,450 Views 12 Replies Last post: Jan 20, 2010 3:26 AM by GeorgeYacubov…

gboskin

223 posts since
Nov 19, 2008

Currently Being Moderated

Jan 6, 2009 12:51 AM

Get RDM size

Hi all and a happy new year to evryone..

The Following script gives a good list of all the RDM ..

$report1 = @()

$vms = Get-VM |Sort Name -Descending | Get-View

foreach($vm in $vms){

foreach($dev in $vm.Config.Hardware.Device){

if(($dev.gettype()).Name -eq "VirtualDisk"){

*if(($dev.Backing.CompatibilityMode -eq "physicalMode") -or *

($dev.Backing.CompatibilityMode -eq "virtualMode")){

$row = "" | select VMName, HDDeviceName, HDFileName, HDMode

$row.VMName = $vm.Name

$row.HDDeviceName = $dev.Backing.DeviceName

$row.HDFileName = $dev.Backing.FileName

$row.HDMode = $dev.Backing.CompatibilityMode

+$report1 = $row

}

}

}

}

$report1 | ConvertTo-Html -title "Virtual Machine information" -body "<H2>RDM information.</H2>" -head "<link rel='stylesheet' href='style.css' type='text/css' />" | Out-File -Append $filelocation

is there a way i can get the actual size (capacity) of the RDms..????

LucD

8,981 posts since
Oct 31, 2005

Currently Being Moderated

1. Jan 6, 2009 2:02 AM

in response to: gboskin

Re: Get RDM size

You could use the script from list disks rdm with powershell.

With a minor adaption it will also display the disk capacity.

$report = @()
$vms = Get-VM  | Get-View
foreach($vm in $vms){
  foreach($dev in $vm.Config.Hardware.Device){
    if(($dev.gettype()).Name -eq "VirtualDisk"){
       if(($dev.Backing.CompatibilityMode -eq "physicalMode") -or 
          ($dev.Backing.CompatibilityMode -eq "virtualMode")){
         $row = "" | select VMName, HDDeviceName, HDFileName, HDMode, HDsize
          $row.VMName = $vm.Name
         $row.HDDeviceName = $dev.Backing.DeviceName
         $row.HDFileName = $dev.Backing.FileName
         $row.HDMode = $dev.Backing.CompatibilityMode
           $row.HDSize = $dev.CapacityInKB
         $report += $row
       }
     }
  }
}
$report

An RDM is mapped via a .vmdk file.

Through the .vmdk file the size can be obtained.

Blog: http://lucd.info | Twitter: @LucD22 | Book co-author: http://powerclibook.com

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gboskin

223 posts since
Nov 19, 2008

Currently Being Moderated

2. Jan 6, 2009 2:36 AM

in response to: LucD

Re: Get RDM size

I seem to be getting an error

You cannot call a method on a null-valued expression.

At :line:30 char:21

+ if(($dev.gettype( <<<< )).Name -eq "VirtualDisk"){

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LucD

8,981 posts since
Oct 31, 2005

Currently Being Moderated

3. Jan 6, 2009 2:49 AM

in response to: gboskin

Re: Get RDM size

Can you attach the script you are using ?

I have no line 30

Blog: http://lucd.info | Twitter: @LucD22 | Book co-author: http://powerclibook.com

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gboskin

223 posts since
Nov 19, 2008

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4. Jan 6, 2009 3:00 AM

in response to: LucD

Re: Get RDM size

You cannot call a method on a null-valued expression.

At :line:26 char:21

+ if(($dev.gettype( <<<< )).Name -eq "VirtualDisk"){

Attachments:

RDMInfo.ps1 (1.3 K)

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gboskin

223 posts since
Nov 19, 2008

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5. Jan 6, 2009 3:16 AM

in response to: gboskin

Re: Get RDM size

Strange if i run the same script pointing to a diffrent Vcenter is works..?????????????? Point it back I get the same error

Any ideas ???

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LucD

8,981 posts since
Oct 31, 2005

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6. Jan 6, 2009 4:02 AM

in response to: gboskin

Re: Get RDM size

Are you running the samve VC version on both ?

Different versions use different APIs.

It could be that one VC doesn't support all the objects.

Blog: http://lucd.info | Twitter: @LucD22 | Book co-author: http://powerclibook.com

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gboskin

223 posts since
Nov 19, 2008

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7. Jan 6, 2009 4:15 AM

in response to: LucD

Re: Get RDM size

yes exactly the same version ..was working ok till this afternoon..

Think i will have do give it a chinese cure " reboot vCenter"....

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ief

28 posts since
Aug 19, 2005

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8. Jan 6, 2009 5:52 AM

in response to: gboskin

Re: Get RDM size

Make sure you are connected to the vc

blog www.ivobeerens.nl

blog www.ivobeerens.nl

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gboskin

223 posts since
Nov 19, 2008

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9. Jan 6, 2009 6:19 AM

in response to: ief

Re: Get RDM size

Yes good old "Reboot" Vcenter solved the problem..

My next task is

1) how to add the Percentage of the RDM used .. ( Monitor the space left on the RDM)

2) List all RDM with less than 10% free

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GeorgeYacubov…

2 posts since
Aug 10, 2009

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10. Jan 17, 2010 6:21 AM

in response to: gboskin

Re: Get RDM size

Did you figure out?

I am searching for how to monitor and report the details RDM disks on important VMs (i.e. the physical disk RDMs without logical disk letters that are associated wiht Exchange 2007 Storage Groups)

I would like to be able to report on free space remaining.

Thanks in advance..

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c_shanklin

943 posts since
Dec 3, 2007

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11. Jan 18, 2010 1:18 PM

in response to: GeorgeYacubov…

Re: Get RDM size

What you're asking for is a bit more than what I see above.

Check out this script from Hugo Peeters. He mixes PowerCLI with WMI calls to fill in guest information. I assume it will work for volumes without drive letters but if not I bet you can tweak it slightly to what you need.

=====

Carter Shanklin

Read the PowerCLI Blog
[Follow me on Twitter|http://twitter.com/cshanklin]

Carter Shanklin | VMware Product Management | @cshanklin

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GeorgeYacubov…

2 posts since
Aug 10, 2009

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12. Jan 20, 2010 3:26 AM

in response to: c_shanklin

Re: Get RDM size

Thank you for the pointer. If it is what I'm after; great. If I'm able to tweak it. I'll post it.

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