LUN report – datastore, RDM and node visibility

When you are running multi-node vSphere clusters, you probably already had the experience that one or more of your LUNs were not visible on all nodes. Now you can try to find out which LUN is missing on which node the hard way through the vSphere client. Or you can use the force of PowerCLI and run a script that will report all this in a handy spreadsheet.

To make the script as flexible as possible it should be able to handle any n-node cluster. And as you some of you might know, the Export-CSV cmdlet has some problems with variable length rows. Luckily there is a handy solution I already used in my yadr – A vDisk reporter post.

The script

param($clusName,$csvName=("C:\Temp\" + $clusName + "-LUN.csv"))

$rndNum = Get-Random -Maximum 99999

$LunInfoDef = @"
	public string ClusterName;
	public string CanonicalName;
	public string UsedBy;
	public string SizeMB;
"@
$LunInfoDef = "public struct LunInfo" + $rndNum + "{`n" + $LunInfoDef

$esxServers = Get-Cluster $clusName | Get-VMHost | Sort-Object -Property Name
$esxServers | %{
	$LunInfoDef += ("`n`tpublic string " + ($_.Name.Split(".")[0]) + ";")
}
$LunInfoDef += "`n}"

Add-Type -Language CsharpVersion3 -TypeDefinition $LunInfoDef

$scsiTab = @{}
$esxServers | %{
	$esxImpl = $_

# Get SCSI LUNs
	$esxImpl | Get-ScsiLun | where {$_.LunType -eq "Disk"} | %{

		$key = $esxImpl.Name.Split(".")[0] + "-" + $_.CanonicalName.Split(".")[1]
		if(!$scsiTab.ContainsKey($key)){

			$scsiTab[$key] = $_.CanonicalName,"",$_.CapacityMB
		}
	}

# Get the VMFS datastores
	$esxImpl | Get-Datastore | where {$_.Type -eq "VMFS"} | Get-View | %{
		$dsName = $_.Name
		$_.Info.Vmfs.Extent | %{
			$key = $esxImpl.Name.Split(".")[0] + "-" + $_.DiskName.Split(".")[1]
			$scsiTab[$key] = $scsiTab[$key][0], $dsName, $scsiTab[$key][2]
		}
	}
}

# Get the RDM disks
Get-Cluster $clusName | Get-VM | Get-View | %{
	$vm = $_
	$vm.Config.Hardware.Device | where {$_.gettype().Name -eq "VirtualDisk"} | %{
		if("physicalMode","virtualmode" -contains $_.Backing.CompatibilityMode){
			$disk = $_.Backing.LunUuid.Substring(10,32)
			$key = (Get-View $vm.Runtime.Host).Name.Split(".")[0] + "-" + $disk
			$scsiTab[$key][1] = $vm.Name + "/" + $_.DeviceInfo.Label
		}
	}
}

$scsiTab.GetEnumerator() | Group-Object -Property {$_.Key.Split("-")[1]} | %{
	$lun = New-Object ("LunInfo" + $rndNum)
	$lun.ClusterName = $clusName
	$_.Group | %{
		$esxName = $_.Key.Split("-")[0]
		$lun.$esxName = "ok"
		if(!$lun.CanonicalName){$lun.CanonicalName = $_.Value[0]}
		if(!$lun.UsedBy){$lun.UsedBy = $_.Value[1]}
		if(!$lun.SizeMB){$lun.SizeMB = $_.Value[2]}

	}
	$lun
} | Export-Csv $csvName -NoTypeInformation -UseCulture
Invoke-Item $csvName

Annotations

Line 1: The definition of the parameters that can be used with the script. Note that the second parameter takes a default when is not present.

Line 3: If you would run the script multiple times from the same PowerCLI prompt you would get an error saying “Add-Type : Cannot add type. The type name ‘LunInfo’ already exists.“. To avoid this error the script generates on each run a random number between 1 and 99999, which it appends to the type name. This should, unless you have thousands of clusters avoid the error message.

Line 5-19: Since the number of nodes is unknown before the script is actually running, I create a new type, called LunInfon (where n is the random number generated before).

Line 14-16: The new type will contain a property for each node in the cluster. The name of this property is the first qualifier of the FQDN of the host.

Line 21: The script keeps all the information it will gather in a hash table called $scsiTab. The key into the hash table is composed from short hostname and the Canonical name of the LUN.

Line 26-33: From the information provided by the Get-ScsiLun cmdlet, the script will populate the hash table. In this loop the CanonicalName and the Capacity of the LUN are stored in the hash table.

Line 36-43: From the Datastore object the script finds out for all datastores in the cluster which LUN they use.

Line 45-55: The script runs through all the virtual machines on the cluster and checks all virtual disks if they are RDM backed. If the script encounters a RDM it stores the name of the virtual machine and the label of the hard disk in the hash table.

Line 57-68: All the information in the hash table is now grouped per Canonical name. For each Canonical name the script creates a LunInfon object and stores the information from the hash table in that object.

Line 69-70: The array with LunInfon objects is exported to a CSV file and the CSV file is opened.

Usage

You save the script as a .ps1 file. In the example screenshots below I used the name Cluster-LUN-list.ps1.

Start the PowerCLI prompt and make sure that you are connected to the vCenter.

From the PowerCLI prompt you can call the script with the name of a cluster as a parameter.

In this case the script will create the CSV file as C:\Temp\MyCluster17-LUN.csv.

Or you pass the name of the CSV file as a second parameter to the script.

In this case the script will store the report in LunRpt.csv on the root of the D-partition.

Note that some local disks seem to have the same Canonical name on all nodes in a cluster. I experienced that with some IBM RAID Controllers. In that case the entries for those disks will not be correct in the report. In itself this is not really a problem since those disks are local and no LUNs from the SAN.

The report

The following screenshot shows a report made for a 4-node cluster.

You can clearly see which LUNs are:

  • only visible on 1 of the nodes
  • used as RDM disks
  • used for datastores
  • still available

This report will surely make it easier to talk with your Storage Administrator ;-)

89 thoughts on “LUN report – datastore, RDM and node visibility

  1. Hey LucD I am getting the errors below when attempting to run the script. Any ideas on what the issue is?

    Add-Type : c:\Users\user\AppData\Local\Temp\wfrlejmc.0.cs(6) : ; expected
    c:\Users\user\AppData\Local\Temp\wfrlejmc.0.cs(5) : public string SizeMB;
    c:\Users\user\AppData\Local\Temp\wfrlejmc.0.cs(6) : >>> public string host1;
    c:\Users\user\AppData\Local\Temp\wfrlejmc.0.cs(7) : public string host2;
    At C:\PowerCLI\Get-ClusterLunInfo2.ps1:18 char:1
    + Add-Type -Language CsharpVersion3 -TypeDefinition $LunInfoDef
    + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo : InvalidData: (c:\Users\user…002: ; expected:CompilerError) [Add-Type], Exception
    + FullyQualifiedErrorId : SOURCE_CODE_ERROR,Microsoft.PowerShell.Commands.AddTypeCommand

    Add-Type : c:\Users\user\AppData\Local\Temp\wfrlejmc.0.cs(6) : Invalid token ‘;’ in class, struct, or interface member declaration
    c:\Users\user\AppData\Local\Temp\wfrlejmc.0.cs(5) : public string SizeMB;
    c:\Users\user\AppData\Local\Temp\wfrlejmc.0.cs(6) : >>> public string host1;
    c:\Users\user\AppData\Local\Temp\wfrlejmc.0.cs(7) : public string host2;
    At C:\PowerCLI\Get-ClusterLunInfo2.ps1:18 char:1
    + Add-Type -Language CsharpVersion3 -TypeDefinition $LunInfoDef
    + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo : InvalidData: (c:\Users\user…ber declaration:CompilerError) [Add-Type], Exception
    + FullyQualifiedErrorId : SOURCE_CODE_ERROR,Microsoft.PowerShell.Commands.AddTypeCommand

    • Hi Ryan,
      Which PowerShell version are you running ?
      Do a $psversiontable.

      It could also be something went wrong in the copy/paste of the code.
      Double click inside the code window, that should select all code, and then you can do a copy, followed by a paste into your editor.
      Luc

  2. hi LUC,

    nice script.. i want to get storage device id and storage array list along with LUN id and cannonical name. Is it possible to get all these data in excel in one click.

    thnaks in advance..

  3. @LucD ~ Excellent script! Thank you so much for posting this! I have found this VERY useful! I have two feature request – if possible? When you get a chance, can you edit your script and add the following?

    - Add the VM that is using the RDM in the UsedBy column, so the cell is not left empty
    - Find NFS mount points and add them to the list too?

    Once again, thank you for posting your script!

    David

  4. Hi Luc

    Any chance you have a version of this script that can query the entire Virtual Centre. Need to find a way to list all SCSI devices from a specific array to assist with a cleanup or de-comm process.

    Thanks

    Johan

    • Hi Johan, do you have several clusters in your vCenter ? If yes, you could call the script for each cluster. Something like

      Get-Cluster | %{./Cluster-LUN-List.ps1 $_.Name}

      This would produce a CSV file per cluster.

      If you also have stand-alone ESXi servers in your vCenter, the script would need some changes.
      Btw, do you have shared datastores between the stand-alone ESXi servers ?

  5. Hi lucd
    Ton of thanks for this good script but it’s not running in power cli 5.5 any update for this version.

    Error:
    param : The term ‘param’ is not recognized as the name of a cmdlet, function,
    script file, or operable program. Check the spelling of the name, or if a path
    was included, verify that the path is correct and try again.

  6. Hello,

    Does it work with vCenter 5 & ESXi5, I am not able to run the script

    param : The term ‘param’ is not recognized as the name of a cmdlet, function,
    script file, or operable program. Check the spelling of the name, or if a path
    was included, verify that the path is correct and try again.
    At X:\ps\VMwareCluster-LUNs.ps1

    Thanks

    • @Saeed, yes, the script should work in vSphere 5.*.
      Is the line with the Param keyword, the first line in the .ps1 file ?

      • Yes, it’s the first line
        I am not a power shell expert, I just copy and save it as .ps1
        Thanks & appreciate your reply

  7. Hi Lucd,

    This is excellent script, been handy for all FC datastore inconsistent mappings..
    But, we have lot many “NFS datastores” on large number of Clusters..

    Can you provide separate script, which can check whether “NFS datastores” are uniformly mapped to all ESX Hosts in cluster or not?? If any misses highlight same (like your above script)??

    Thank you in adv..

  8. Luc Tried replacing “-” with * on the lines you called out no luck. I weird results in the out put when using replace and other chacther.

    Property ‘opc-c4-vmh00.60a980006465586e424a6a415378374a’ cannot be found on this object; make sure it exists and is settable.
    At C:\temp\SecScripts\CompareLuns.ps1:64 char:3
    + $lun.$esxName = “ok”
    + ~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : PropertyAssignmentException

    Property ‘opc-c4-vmh00.60a9800064656150576f6a4156702d46′ cannot be found on this object; make sure it exists and is settable.
    At C:\temp\SecScripts\CompareLuns.ps1:64 char:3
    + $lun.$esxName = “ok”
    + ~~~~~~~~~~~~~~~~~~~~

    The Script

    param($clusName,$csvName=(“C:\Temp\” + $clusName + “-LUN.csv”))

    $rndNum = Get-Random -Maximum 99999

    $LunInfoDef = @”
    public string ClusterName;
    public string CanonicalName;
    public string UsedBy;
    public string SizeMB;
    “@
    $LunInfoDef = “public struct LunInfo” + $rndNum + “{`n” + $LunInfoDef

    $esxServers = Get-Cluster $clusName | Get-VMHost | Sort-Object -Property Name
    $esxServers | %{
    $LunInfoDef += (“`n`tpublic string ” + ($_.Name.Split(“.”)[0].Replace(‘-’,”)) + “;”)

    }
    $LunInfoDef += “`n}”

    Add-Type -Language CsharpVersion3 -TypeDefinition $LunInfoDef

    $scsiTab = @{}
    $esxServers | %{
    $esxImpl = $_

    # Get SCSI LUNs
    $esxImpl | Get-ScsiLun | where {$_.LunType -eq “Disk”} | %{

    $key = $esxImpl.Name.Split(“.”)[0] + “.” + $_.CanonicalName.Split(“.”)[1]
    if(!$scsiTab.ContainsKey($key)){

    $scsiTab[$key] = $_.CanonicalName,””,$_.CapacityMB
    }
    }

    # Get the VMFS datastores
    $esxImpl | Get-Datastore | where {$_.Type -eq “VMFS”} | Get-View | %{
    $dsName = $_.Name
    $_.Info.Vmfs.Extent | %{
    $key = $esxImpl.Name.Split(“.”)[0] + “.” + $_.DiskName.Split(“.”)[1]
    $scsiTab[$key] = $scsiTab[$key][0], $dsName, $scsiTab[$key][2]
    }
    }
    }

    # Get the RDM disks
    Get-Cluster $clusName | Get-VM | Get-View | %{
    $vm = $_
    $vm.Config.Hardware.Device | where {$_.gettype().Name -eq “VirtualDisk”} | %{
    if(“physicalMode”,”virtualmode” -contains $_.Backing.CompatibilityMode){
    $disk = $_.Backing.LunUuid.Substring(10,32)
    $key = (Get-View $vm.Runtime.Host).Name.Split(“.”)[0] + “.” + $disk
    $scsiTab[$key][1] = $vm.Name + “/” + $_.DeviceInfo.Label
    }
    }
    }

    $scsiTab.GetEnumerator() | Group-Object -Property {$_.Key.Split(“.”)[1]} | %{
    $lun = New-Object (“LunInfo” + $rndNum)
    $lun.ClusterName = $clusName
    $_.Group | %{
    $esxName = $_.Key.Split(“*”)[0]
    $lun.$esxName = “ok”
    if(!$lun.CanonicalName){$lun.CanonicalName = $_.Value[0]}
    if(!$lun.UsedBy){$lun.UsedBy = $_.Value[1]}
    if(!$lun.SizeMB){$lun.SizeMB = $_.Value[2]}

    }
    $lun
    } | Export-Csv $csvName -NoTypeInformation -UseCulture
    Invoke-Item $csvName

  9. This looks like a great script. But I am unable to run it because I have hyphens in the ESX host names.

    Is there a workaround to that issue? Your help would be appreciated.

  10. Seems I’ve run into a problem. Been using the script for some time now with no issues. Then suddenly starte getting errors. What seems to be occurring is we now have a few Esx hosts that do not have names, rather their .name is an up address like 10.10.10.10. The current split using a “.” ends up with duplicate since each key/ public struct will be 10. I attempted doing a replace of the “.” with nothing so the name would end up 10101010 but that gives an invalid token.

    Any thoughts? Also note the same cluster has both named hosts and hosts with ip addresses only. The only way I have gotten it to semi work was to first replace all “.” with ‘ ‘ and then add a letter both infront an behind the result. So it would look like a10101010a and aESXSRV1a.

    Any idea’s?

    Thanks
    Joe

  11. What if the disk is presented to two ESXs, one ESX (lets call it esx1) is in this cluster, and one not (lets call it esx2). In that case we will get that RDM is available, even if some vm on esx2 is using tha RDM disk?

  12. Hi LucD.
    I’m using a script to create a .csv file to monitor the latency of my datastores.
    In this report I put the information I need in this way:

    Entity = $oEntry.Entity

    EntityId = $oEntry.EntityId

    Instance = $oEntry.Instance

    MetricId = $oEntry.MetricId

    Timestamp = ($oentry.Timestamp).toString(‘dd/MM/yyyy HH:mm’)

    Value = $oEntry.Value

    Unit = $oEntry.Unit

    }

    Now, I would like to know if there is a way to change the , that return something like that: 4d4b3f85-db8f3f4c-3fc4-984be1xxxxxx,
    with the name of the datastore.
    Thank you

    V.

  13. I believe few commands / verbs got depriciated / removed in Esxi5.

    Luc can you confirm if the error is coz of that.

  14. @LucD

    thats not the problem, because I did exactly that, more errors :P

    Add-Type : Could not find file ‘C:\Users\saldanhapa\AppData\Local\Temp\xmknl8cz
    .dll’.
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:19 char:9
    + Add-Type <<<< -Language CsharpVersion3 -TypeDefinition $LunInfoDef
    + CategoryInfo : NotSpecified: (:) [Add-Type], FileNotFoundExcept
    ion
    + FullyQualifiedErrorId : System.IO.FileNotFoundException,Microsoft.PowerS
    hell.Commands.AddTypeCommand

    • @SAL, I have seen that problem before.
      It seems to be related to the Just-In-Time serialisation mechanism of .Net. Not a lot I can do there I’m afraid.

      Could you try the script on another PC ?
      Or eventually start the PowerCLI prompt as Administrator ?

  15. great post LucD,
    but I can’t get my script to work

    its full of errors when I run

    Property ‘CanonicalName’ cannot be found on this object; make sure it exists an
    d is settable.
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:63 char:32
    + if(!$lun.CanonicalName){$lun. <<<< CanonicalName = $_.Value[0]}
    + CategoryInfo : InvalidOperation: (CanonicalName:String) [], Run
    timeException
    + FullyQualifiedErrorId : PropertyNotFound

    Property 'UsedBy' cannot be found on this object; make sure it exists and is se
    ttable.
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:64 char:25
    + if(!$lun.UsedBy){$lun. <<<< UsedBy = $_.Value[1]}
    + CategoryInfo : InvalidOperation: (UsedBy:String) [], RuntimeExc
    eption
    + FullyQualifiedErrorId : PropertyNotFound

    Property 'SizeMB' cannot be found on this object; make sure it exists and is se
    ttable.
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:65 char:25
    + if(!$lun.SizeMB){$lun. <<<< SizeMB = $_.Value[2]}
    + CategoryInfo : InvalidOperation: (SizeMB:String) [], RuntimeExc
    eption
    + FullyQualifiedErrorId : PropertyNotFound

    Export-Csv : Cannot bind argument to parameter 'InputObject' because it is null
    .
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:69 char:15
    + } | Export-Csv <<<< $csvName -NoTypeInformation -UseCulture
    + CategoryInfo : InvalidData: (:) [Export-Csv], ParameterBindingV
    alidationException
    + FullyQualifiedErrorId : ParameterArgumentValidationErrorNullNotAllowed,M
    icrosoft.PowerShell.Commands.ExportCsvCommand

    New-Object : Cannot find type [LunInfo51078]: make sure the assembly containing
    this type is loaded.
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:58 char:19
    + $lun = New-Object <<<< ("LunInfo" + $rndNum)
    + CategoryInfo : InvalidType: (:) [New-Object], PSArgumentExcepti
    on
    + FullyQualifiedErrorId : TypeNotFound,Microsoft.PowerShell.Commands.NewOb
    jectCommand

    Property 'ClusterName' cannot be found on this object; make sure it exists and
    is settable.
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:59 char:7
    + $lun. <<<< ClusterName = $clusName
    + CategoryInfo : InvalidOperation: (ClusterName:String) [], Runti
    meException
    + FullyQualifiedErrorId : PropertyNotFound

    Property '10' cannot be found on this object; make sure it exists and is settab
    le.
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:62 char:8
    + $lun. <<<< $esxName = "ok"
    + CategoryInfo : InvalidOperation: (10:String) [], RuntimeExcepti
    on
    + FullyQualifiedErrorId : PropertyNotFound

    Property 'CanonicalName' cannot be found on this object; make sure it exists an
    d is settable.
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:63 char:32
    + if(!$lun.CanonicalName){$lun. <<<< CanonicalName = $_.Value[0]}
    + CategoryInfo : InvalidOperation: (CanonicalName:String) [], Run
    timeException
    + FullyQualifiedErrorId : PropertyNotFound

    Property 'UsedBy' cannot be found on this object; make sure it exists and is se
    ttable.
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:64 char:25
    + if(!$lun.UsedBy){$lun. <<<< UsedBy = $_.Value[1]}
    + CategoryInfo : InvalidOperation: (UsedBy:String) [], RuntimeExc
    eption
    + FullyQualifiedErrorId : PropertyNotFound

    Property 'SizeMB' cannot be found on this object; make sure it exists and is se
    ttable.
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:65 char:25
    + if(!$lun.SizeMB){$lun. <<<< SizeMB = $_.Value[2]}
    + CategoryInfo : InvalidOperation: (SizeMB:String) [], RuntimeExc
    eption
    + FullyQualifiedErrorId : PropertyNotFound

    Export-Csv : Cannot bind argument to parameter 'InputObject' because it is null
    .
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:69 char:15
    + } | Export-Csv <<<< $csvName -NoTypeInformation -UseCulture
    + CategoryInfo : InvalidData: (:) [Export-Csv], ParameterBindingV
    alidationException
    + FullyQualifiedErrorId : ParameterArgumentValidationErrorNullNotAllowed,M
    icrosoft.PowerShell.Commands.ExportCsvCommand

    New-Object : Cannot find type [LunInfo51078]: make sure the assembly containing
    this type is loaded.
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:58 char:19
    + $lun = New-Object <<<< ("LunInfo" + $rndNum)
    + CategoryInfo : InvalidType: (:) [New-Object], PSArgumentExcepti
    on
    + FullyQualifiedErrorId : TypeNotFound,Microsoft.PowerShell.Commands.NewOb
    jectCommand

    Property 'ClusterName' cannot be found on this object; make sure it exists and
    is settable.
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:59 char:7
    + $lun. <<<< ClusterName = $clusName
    + CategoryInfo : InvalidOperation: (ClusterName:String) [], Runti
    meException
    + FullyQualifiedErrorId : PropertyNotFound

    Property '10' cannot be found on this object; make sure it exists and is settab
    le.
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:62 char:8
    + $lun. <<<< $esxName = "ok"
    + CategoryInfo : InvalidOperation: (10:String) [], RuntimeExcepti
    on
    + FullyQualifiedErrorId : PropertyNotFound

    Property 'CanonicalName' cannot be found on this object; make sure it exists an
    d is settable.
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:63 char:32
    + if(!$lun.CanonicalName){$lun. <<<< CanonicalName = $_.Value[0]}
    + CategoryInfo : InvalidOperation: (CanonicalName:String) [], Run
    timeException
    + FullyQualifiedErrorId : PropertyNotFound

    Property 'UsedBy' cannot be found on this object; make sure it exists and is se
    ttable.
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:64 char:25
    + if(!$lun.UsedBy){$lun. <<<< UsedBy = $_.Value[1]}
    + CategoryInfo : InvalidOperation: (UsedBy:String) [], RuntimeExc
    eption
    + FullyQualifiedErrorId : PropertyNotFound

    Property 'SizeMB' cannot be found on this object; make sure it exists and is se
    ttable.
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:65 char:25
    + if(!$lun.SizeMB){$lun. <<<< SizeMB = $_.Value[2]}
    + CategoryInfo : InvalidOperation: (SizeMB:String) [], RuntimeExc
    eption
    + FullyQualifiedErrorId : PropertyNotFound

    Export-Csv : Cannot bind argument to parameter 'InputObject' because it is null
    .
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:69 char:15
    + } | Export-Csv <<<< $csvName -NoTypeInformation -UseCulture
    + CategoryInfo : InvalidData: (:) [Export-Csv], ParameterBindingV
    alidationException
    + FullyQualifiedErrorId : ParameterArgumentValidationErrorNullNotAllowed,M
    icrosoft.PowerShell.Commands.ExportCsvCommand

    New-Object : Cannot find type [LunInfo51078]: make sure the assembly containing
    this type is loaded.
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:58 char:19
    + $lun = New-Object <<<< ("LunInfo" + $rndNum)
    + CategoryInfo : InvalidType: (:) [New-Object], PSArgumentExcepti
    on
    + FullyQualifiedErrorId : TypeNotFound,Microsoft.PowerShell.Commands.NewOb
    jectCommand

    Property 'ClusterName' cannot be found on this object; make sure it exists and
    is settable.
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:59 char:7
    + $lun. <<<< ClusterName = $clusName
    + CategoryInfo : InvalidOperation: (ClusterName:String) [], Runti
    meException
    + FullyQualifiedErrorId : PropertyNotFound

    Property '10' cannot be found on this object; make sure it exists and is settab
    le.
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:62 char:8
    + $lun. <<<< $esxName = "ok"
    + CategoryInfo : InvalidOperation: (10:String) [], RuntimeExcepti
    on
    + FullyQualifiedErrorId : PropertyNotFound

    Property 'CanonicalName' cannot be found on this object; make sure it exists an
    d is settable.
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:63 char:32
    + if(!$lun.CanonicalName){$lun. <<<< CanonicalName = $_.Value[0]}
    + CategoryInfo : InvalidOperation: (CanonicalName:String) [], Run
    timeException
    + FullyQualifiedErrorId : PropertyNotFound

    Property 'UsedBy' cannot be found on this object; make sure it exists and is se
    ttable.
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:64 char:25
    + if(!$lun.UsedBy){$lun. <<<< UsedBy = $_.Value[1]}
    + CategoryInfo : InvalidOperation: (UsedBy:String) [], RuntimeExc
    eption
    + FullyQualifiedErrorId : PropertyNotFound

    Property 'SizeMB' cannot be found on this object; make sure it exists and is se
    ttable.
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:65 char:25
    + if(!$lun.SizeMB){$lun. <<<< SizeMB = $_.Value[2]}
    + CategoryInfo : InvalidOperation: (SizeMB:String) [], RuntimeExc
    eption
    + FullyQualifiedErrorId : PropertyNotFound

    Export-Csv : Cannot bind argument to parameter 'InputObject' because it is null
    .
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:69 char:15
    + } | Export-Csv <<<< $csvName -NoTypeInformation -UseCulture
    + CategoryInfo : InvalidData: (:) [Export-Csv], ParameterBindingV
    alidationException
    + FullyQualifiedErrorId : ParameterArgumentValidationErrorNullNotAllowed,M
    icrosoft.PowerShell.Commands.ExportCsvCommand

    New-Object : Cannot find type [LunInfo51078]: make sure the assembly containing
    this type is loaded.
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:58 char:19
    + $lun = New-Object <<<< ("LunInfo" + $rndNum)
    + CategoryInfo : InvalidType: (:) [New-Object], PSArgumentExcepti
    on
    + FullyQualifiedErrorId : TypeNotFound,Microsoft.PowerShell.Commands.NewOb
    jectCommand

    Property 'ClusterName' cannot be found on this object; make sure it exists and
    is settable.
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:59 char:7
    + $lun. <<<< ClusterName = $clusName
    + CategoryInfo : InvalidOperation: (ClusterName:String) [], Runti
    meException
    + FullyQualifiedErrorId : PropertyNotFound

    Property '10' cannot be found on this object; make sure it exists and is settab
    le.
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:62 char:8
    + $lun. <<<< $esxName = "ok"
    + CategoryInfo : InvalidOperation: (10:String) [], RuntimeExcepti
    on
    + FullyQualifiedErrorId : PropertyNotFound

    Property 'CanonicalName' cannot be found on this object; make sure it exists an
    d is settable.
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:63 char:32
    + if(!$lun.CanonicalName){$lun. <<<< CanonicalName = $_.Value[0]}
    + CategoryInfo : InvalidOperation: (CanonicalName:String) [], Run
    timeException
    + FullyQualifiedErrorId : PropertyNotFound

    Property 'UsedBy' cannot be found on this object; make sure it exists and is se
    ttable.
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:64 char:25
    + if(!$lun.UsedBy){$lun. <<<< UsedBy = $_.Value[1]}
    + CategoryInfo : InvalidOperation: (UsedBy:String) [], RuntimeExc
    eption
    + FullyQualifiedErrorId : PropertyNotFound

    Property 'SizeMB' cannot be found on this object; make sure it exists and is se
    ttable.
    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\cluster_lun_li
    st.ps1:65 char:25
    + if(!$lun.SizeMB){$lun. <<<< SizeMB = $_.Value[2]}
    + CategoryInfo : InvalidOperation: (SizeMB:String) [], RuntimeExc

    • Hi Sal,
      It looks as if the Add-Type in line 19 didn’t work.
      Do you get any message before the ones you include in your comment ?
      Are you running the script from a PowerCLI prompt ?
      Luc

    • @Sal, it looks like you might have copied the line numbers as well.
      In the script box, at the top right, there will be some icons that appear when you hover over them.
      Click the 2nd icon from the left (“copy to clipboard”).
      In an editor you can now do Ctrl-V to paste the script.

    • @Sumanth, it should work against ESX5.
      Are you using PowerPath ?
      Or do you have hyphens in the names of your ESX5 servers or datastores ?
      Any error messages ?

  16. I am receiving the errors that have been noted. My VM’s and ESXi Hosts have “-” in the names. Not my idea.

    I have tried to add the line
    $LunInfoDef += (“`n`tpublic string ” + ($_.Name.Split(“.”)[0].Replace(‘-’,”)) + “;”)

    And attempted to modify all lines with “-”.

    Example:
    Hostname: okc-clu-esx01
    VM: okc-clu-vm01

    Cannot index into a null array.
    At C:\users\nulluser\desktop\LUN.ps1:40 char:36
    + $scsiTab[$key] = $scsiTab[$key][ <<<< 0], $dsName, $scsiTab[$key][2]
    + CategoryInfo : InvalidOperation: (0:Int32) [], RuntimeException
    + FullyQualifiedErrorId : NullArray

    • Hi Brian, I replied in the thread you created on the VMTN PowerCLI Community.
      In short, my earlier reply to Phil, shows how to replace the hyphen in 5 lines with another character to solve the problem.
      I hope that helps.

  17. after replacing the luninfo code this what i get

    Unexpected token ‘Replace’ in expression or statement.
    At C:\Program Files\VMware\Infrastructure\vSphere PowerCLI\scripts\DATA_disl.ps1:15 char:70
    + $LunInfoDef += (“`n`tpublic string ” + ($_.Name.Split(“.”)[0]Replace <<<< ('-','')) + ";")
    + CategoryInfo : ParserError: (Replace:String) [], ParseException
    + FullyQualifiedErrorId : UnexpectedToken

    • @Devanshu, that line should be

      $LunInfoDef += (“`n`tpublic string ” + ($_.Name.Split(“.”)[0].Replace('-','')) + ";")

      But see my answer to Phil, there is no need to eliminate the hyphen in the host names, just pick another character.

  18. @Phil
    should it be:
    $LunInfoDef += (“`n`tpublic string ” + ($_.Name.Split(“.”)[0] -Replace(‘-’,”)) + “;”)

    ??

    • Hi Phil, the hyphen I used to join the hostname and the canonicalname in the hash tab key, is probably not the best choice :-( Since the hyphen is an accepted value in a ESX(i) server name.
      The easiest solution would be to replace the hyphen by another character (that is not used in your ESX(i) host names.
      Replace the “-” in lines 28, 39, 51, 57 and 61 by any other character that doesn’t appear in your host names.

  19. Wonderful script. I am having one problem though

    I also have some servers with hyphens in their names. When I try:
    $LunInfoDef += (“`n`tpublic string ” + ($_.Name.Split(“.”)[0]Replace(‘-’,”)) + “;”)

    it doesn’t like Replace. PowerGUI shows “unexpected ‘Replace’ in expression or statement”

  20. Add-Type : c:\Users\pa-aharrington\AppData\Local\Temp\1\bl3rhkzs.0.cs(6) : Inva
    lid token ‘-’ in class, struct, or interface member declaration
    c:\Users\pa-aharrington\AppData\Local\Temp\1\bl3rhkzs.0.cs(5) : public stri
    ng SizeMB;
    c:\Users\pa-aharrington\AppData\Local\Temp\1\bl3rhkzs.0.cs(6) : >>> public
    string atl-clv01-01;
    c:\Users\pa-aharrington\AppData\Local\Temp\1\bl3rhkzs.0.cs(7) : public stri
    ng atl-clv01-02;
    At C:\scripts\alan\lunreport.ps1:21 char:9
    + Add-Type <<<< -Language CsharpVersion3 -TypeDefinition $LunInfoDef
    + CategoryInfo : InvalidData: (c:\Users\pa-aha…ber declaration:
    CompilerError) [Add-Type], Exception
    + FullyQualifiedErrorId : SOURCE_CODE_ERROR,Microsoft.PowerShell.Commands.
    AddTypeCommand

    • @Alan, I think I know what happened.
      The script dynamically defines a struct in C#. One of the members of that struct is given the name of the ESX(i) servers in the cluster.
      It seems you have hyphens (-) in the names of your ESX(i) servers, and unfortunately C# doesn’t accept that character in a struct declaration it seems.
      If you replace line 15

      $LunInfoDef += ("`n`tpublic string " + ($_.Name.Split(".")[0]) + ";")

      by this

      $LunInfoDef += ("`n`tpublic string " + ($_.Name.Split(".")[0]Replace('-','')) + ";")

      it might work.
      The disadvantage is that the names of your ESX(i) will be missing the hyphens in their names

  21. does this work on powercli 5.0.1 and vcenter 5 with 5 host? i’m getting tons of errors and don’t know where to check…

    thanks!
    alan

  22. I must be missing something. It seems to not like line 19. I have .net3.5.1 installed. But am I supposed to import a module?

    At C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI\Scripts\disk_report.ps1:19 char:9
    + Add-Type <<<< -Language CsharpVersion3 -TypeDefinition $LunInfoDef
    + CategoryInfo : InvalidData: (c:\Users\anon\A…002: ; expected:CompilerError) [Add-Type], Exception
    + FullyQualifiedErrorId : SOURCE_CODE_ERROR,Microsoft.PowerShell.Commands.AddTypeCommand

    • @Jason, I suspect you are using PowerShell v1. The Add-Type cmdlet was introduced in PowerShell v2. Do a
      $host.Version
      and check the Major, that should say 2.

  23. @LucD

    Thanks LucD for the script with email and HTML. The script runs into multiple errors… they scroll very fast and hard to capture.

    the one with csv output works fine. Thanks!

  24. Thanks for the great script LucD.

    Is there a way we can get a HTML report for all the clusters in the VC and then add this report to a mail, something like a daily check. This will help to keep a track of the paths and generate some kind of availability report or so.

    Thanks again!

    • @Amit, that is not that difficult with PowerShell.
      The adapted script will get a LUN report for all the clusters.
      Make sure to update the parameters in the Send-MailMessage cmdlet !
      You can download the script here.

  25. @LucD
    Versions:
    Client OS; Windows Server 2008 R2
    PowerShell: 2.0
    PowerCLI: 4.1.1.28.16
    ESX: 4.1.0
    vCenter:4.1.0

    Thanks for your help.

  26. I had to run the powershell console as Administrator.. But now I receive the same error as struja:

    Add-Type : c:\Users\tgdnoan4\AppData\Local\Temp\2\1ptgud1r.0.cs(6) : ; expected
    c:\Users\tgdnoan4\AppData\Local\Temp\2\1ptgud1r.0.cs(5) : public string SizeM
    B;
    c:\Users\tgdnoan4\AppData\Local\Temp\2\1ptgud1r.0.cs(6) : >>> public string
    esx01;
    c:\Users\tgdnoan4\AppData\Local\Temp\2\1ptgud1r.0.cs(7) : public string esx
    02;
    At C:\Users\tgdnoan4\Desktop\report.ps1:19 char:9
    + Add-Type <<<>> public string
    esx01;
    c:\Users\tgdnoan4\AppData\Local\Temp\2\1ptgud1r.0.cs(7) : public string esx
    02;
    At C:\Users\tgdnoan4\Desktop\report.ps1:19 char:9
    + Add-Type <<<>> public string
    esx02;
    c:\Users\tgdnoan4\AppData\Local\Temp\2\1ptgud1r.0.cs(8) : public string esx
    03;
    At C:\Users\tgdnoan4\Desktop\report.ps1:19 char:9
    + Add-Type <<<< -Language CsharpVersion3 -TypeDefinition $LunInfoDef
    + CategoryInfo : InvalidData: (c:\Users\tgdnoa…002: ; expected:
    CompilerError) [Add-Type], Exception
    + FullyQualifiedErrorId : SOURCE_CODE_ERROR,Microsoft.PowerShell.Commands.
    AddTypeCommand

    • @Andreas, could you tell me whcih versions your are running ?
      Client OS, PowerShell, PowerCLI, ESX(i) and vCenter ?
      It must be a specific combination of versions that causes this problem.

  27. I get the following error on line 19:
    Add-Type : Could not find file ‘C:\Users\*****\AppData\Local\Temp\2\oc5cfced.dll’.

    What I’m doing wrong?

    • @Andreas, that could be related to the .Net version you have installed on the PC where you run the script. What .Net version(s) do you have installed ?
      For PowerCLI you have to have “NET 2.0, 3.0, or 3.5 with Service Pack 1″ (as per the Release Notes)

  28. The below error wont let me use this script, any help will be appreciated.

    Cannot index into a null array.
    At C:\Program Files\VMware\Infrastructure\vSphere PowerCLI\scripts\Cluster-LUN-list.ps1:40 char:36
    + $scsiTab[$key] = $scsiTab[$key][ <<<< 0], $dsName, $scsiTab[$key][2]
    + CategoryInfo : InvalidOperation: (0:Int32) [], RuntimeException
    + FullyQualifiedErrorId : NullArray

  29. This script works great, my only problem is that it will not work on my clusters with esxi 4.1 Update 1 hosts. I get the following error on line 9.

    Add-Type : c:\Users\user\AppData\Local\Temp\28\sdqxdcyc.0.cs(6) : ; expected
    c:\Users\user\AppData\Local\Temp\28\sdqxdcyc.0.cs(5) : public string SizeMB;
    c:\Users\user\AppData\Local\Temp\28\sdqxdcyc.0.cs(6) : >>> public string mtc-b04pv01;
    c:\Users\user\AppData\Local\Temp\28\sdqxdcyc.0.cs(7) : public string mtc-b04pv02;
    At P:\PS\LUN-Clueter-Report.ps1:19 char:9
    + Add-Type <<<< -Language CsharpVersion3 -TypeDefinition $LunInfoDef
    + CategoryInfo : InvalidData: (c:\Users\user…002: ; expected:CompilerError) [Add-Type], Exception
    + FullyQualifiedErrorId : SOURCE_CODE_ERROR,Microsoft.PowerShell.Commands.AddTypeCommand

  30. Hi LucD,
    Your script work great for me. I try to add the LunID property without success.
    Could you help me ?

    Thanks
    HTO

  31. I am running into the same problem with line 52. If I remove the [1] it almost works. I can it tries to put the name of the vm into the array but it parses it wrong.

    Cannot index into a null array.
    At C:\dev\rdms\datastoreRDMVisability.ps1:52 char:19
    + $scsiTab[$key][ <<<< 1] = $vm.Name + "/" + $_.DeviceInfo.Label
    + CategoryInfo : InvalidOperation: (1:Int32) [], RuntimeExceptio
    n
    + FullyQualifiedErrorId : NullArray

    Cannot index into a null array.
    At C:\dev\rdms\datastoreRDMVisability.ps1:52 char:19
    + $scsiTab[$key][ <<<< 1] = $vm.Name + "/" + $_.DeviceInfo.Label
    + CategoryInfo : InvalidOperation: (1:Int32) [], RuntimeExceptio
    n
    + FullyQualifiedErrorId : NullArray

  32. I constantly get errors when i run the script, not sure why this is a problem

    [vSphere PowerCLI] C:\VMScripts> .\storage3.ps1 Utility
    Exception calling “Substring” with “2″ argument(s): “Index and length must refer to a location with
    in the string.
    Parameter name: length”
    At C:\VMScripts\storage3.ps1:50 char:40
    + $disk = $_.Backing.LunUuid.Substring <<<< (10,32)
    + CategoryInfo : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : DotNetMethodException

    Cannot index into a null array.
    At C:\VMScripts\storage3.ps1:52 char:19
    + $scsiTab[$key][ <<<< 1] = $vm.Name + "/" + $_.DeviceInfo.Label
    + CategoryInfo : InvalidOperation: (1:Int32) [], RuntimeException
    + FullyQualifiedErrorId : NullArray

    Exception calling "Substring" with "2" argument(s): "Index and length must refer to a location with
    in the string.
    Parameter name: length"
    At C:\VMScripts\storage3.ps1:50 char:40
    + $disk = $_.Backing.LunUuid.Substring <<<< (10,32)
    + CategoryInfo : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : DotNetMethodException

  33. @LucD
    Hi Luc,

    Yes and no. I’ve had a look at the SDK reference and see what you mean, but if the Device Type is listed just as Virtual Disk, how can I then get a listing of the Properties for a particular disk including the sub properties in the Backing information?

    As far as I can tell, you need to poll the backing info in order to establish the kind of Virtual Disk it is (RDM, PM, VM or regular Disk), or am I making my life more difficult than it needs to be?

    Again, as far as I can tell, I need to be able to list all the properties available to me in order to find a property that matches in both the backing or device info and the properties from either get-scsilun or Config.StorageDevice.Scsilun in order to be able to list the VM, the RDM filename and location, and the LUN number that the RDM is pointing at.

    • You can use the typename of the object that sits behind the ‘backing’ property to take the correct branch in your code.
      For example:

      switch($dev.backing.GetType().Name){
      'VirtualDiskFlatVer2BackingInfo' {
      # A regular VHD
      }
      'VirtualDiskRawDiskVer2BackingInfo'{
      # A RDM
      }
      }

      Does that make it any clearer ?

  34. Hi Luc,

    I’ve been playing around with the script you wrote on extracting RDM info per VM and I’ve run into a problem. I cannot seem to get a list of all properties for a specific device.

    I ran the script below, but I need to see what other properties are available under the main backing property, and also list the LUN number as part of the report.

    $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, VMHost, HDDeviceName, HDFileName, HDMode, HDsize, HDDisplayName
    $row.VMName = $vm.Name
    $esx = Get-View $vm.Runtime.Host
    $row.VMHost = ($esx).Name
    $row.HDDeviceName = $dev.Backing.DeviceName
    $row.HDFileName = $dev.Backing.FileName
    $row.HDMode = $dev.Backing.CompatibilityMode
    $row.HDSize = $dev.CapacityInKB
    $row.HDDisplayName = ($esx.Config.StorageDevice.ScsiLun | where {$_.Uuid -eq $dev.Backing.LunUuid}).DisplayName
    $report += $row
    }
    }
    }
    }

    I have tried different permutations of get-member, but get nothing returned. Is there a simple way to get a listing of all properties for backing?

  35. Do you have a script that will return the storage path count for each ESX host/vmhba? great script by the way.

    • @Stew, thanks.
      Do you mean something like this ?

      Get-VMHost | Get-ScsiLun -LunType Disk | `
      Select @{N="Host";E={$_.VMHost.Name}},
      @{N="HBA";E={$_.RuntimeName.Split(':')[0]}},
      @{N="LUN";E={$_.CanonicalName}},
      @{N="#Paths";E={(Get-ScsiLunPath -ScsiLun $_).Count}} | ft -AutoSize

  36. One suggestion, break out not only the LUNs per host, but the luns per host HBA. Trying to find how many hosts amongst hundreds don’t have redundant links to their storage . . . .

  37. So this script won’t work with a cluster of ESXi servers??? When I run it I get the following:

    The string starting:
    At D:\Program Files\VMware\Infrastructure\vSphere PowerCLI\Scripts\Cluster-LUN-list.ps1:8 char:16
    + $LunInfoDef = <<<< @"
    is missing the terminator: "@.
    At D:\Program Files\VMware\Infrastructure\vSphere PowerCLI\Scripts\Cluster-LUN-list.ps1:139 char:1
    + <<<<
    + CategoryInfo : ParserError: (
    public str…tem $csvName
    :String) [], ParseException
    + FullyQualifiedErrorId : TerminatorExpectedAtEndOfString

    • Hi Todd, I have the impression your copy of the script went wrong somewhere. Hover your mouse of the script window and you should see in the top-right corner of the window 4 icons. Use the 2nd icon from the left, it will copy the script to your clipboard.
      And yes, the script should also work against a cluster of ESXi hosts.

  38. Hi lucD,

    The script failed to run at $esxImpl | get-scsiLun | where {$_.Luntype -eq “Disk”} ….

    the error message:
    Get-ScsiLun : Value cannot be null.
    Parameter name: array.

    I tried to run this command with the script… just “get-vmhost | get-scsilun”
    and it failed again with the same error message…

    any idea way?

    Thanks!
    Roey

    • @Roey1206 What do you see when you just do ‘Get-VMHost’ ?
      And what does ‘Get-Cluster $clusName | Get-VMHost’ return ?

  39. Can you run this against all the clusters in vCenter or do you have to specify a specific cluster?

    • Hi James, the script, as it is, only runs against a specific cluster specified in the first parameter.
      But it’s quite easy to run against all your clusters. Something like this for example


      Get-Cluster | %{.\Cluster-Lun-List.ps1 $_.Name}

      This will produce a separate CSV file for each cluster.

  40. Can we use Export-Xls rather than usage of | Export-Csv $csvName -NoTypeInformation -UseCulture

    • Sure you can.
      Make sure the function Export-Xls is available, define a new param (for example $xlsName instead of $csvName) and then make the last line something like this:
      | Export-Xls -Path $xlsName -WorksheetName "LUN report" -AppendWorksheet:$false

      You can have a worksheet for each of your clusters in one spreadsheet. Great idea.

    • Ossie, I just tested the Get-ScsiLun cmdlet on a non-clustered ESXi build 244038. And it returned the data correctly.
      There is a thread on the PowerCLI Community that mentions the same problem, but there has been no solution yet. :-(

  41. Hi Luc

    When I execute Get-VMHost | Get-ScsiLun on ESXi I get an error,

    Get-ScsiLun : Object reference not set to an instance of an object.
    At line:1 char:45
    + Get-VMHost xxxxxxxxxxx | Get-ScsiLun <<<<
    + CategoryInfo : NotSpecified: (:) [Get-ScsiLun], NullReferenceEx
    ception
    + FullyQualifiedErrorId : System.NullReferenceException,VMware.VimAutomati
    on.VimAutomation.Commands.Host.GetScsiLun

    but if I do the same on an ESX host, it lists out all the LUNs.

    Cheers
    Ossie

  42. Hi Luc

    Could it be that Cluster is of ESXi hosts? Just tried on another cluster of 4 ESX hosts and it worked OK.

    Cheers
    Ossie

    • Ossie,
      Line 22 is the start of a loop over all ESX servers that are in the cluster.
      Line 23 stores the loop variable ($_) in another variable, called $esxImpl.

      Unfortunately I don’t have a cluster of ESXi hosts handy for testing right now.
      Can you check if

      Get-VMHost "one-of-the-ESXi-hosts" | Get-ScsiLun

      returns anything ?

  43. Hi Luc

    Thanks for the reply. I did think that might be the issue so as you suggested had tried just the Get-Cluster “cluster name with spaces” | Get-VMHost and it returns the single host in this cluster, with power status and other stats.
    Obviously others have the script working OK so I’m not sure what could be wrong here. BTW -What is the purpose of lines 22 and 23?
    Thanks again
    Ossie

  44. Hi LucD
    Trying to run your script and getting the below errors. Not being familiar with Powershell scripting I was wondering if you could point out what I may be doing incorrectly.
    Thanks

    Get-ScsiLun : Object reference not set to an instance of an object.
    At D:\Scripts\LUN-report.ps1:26 char:24
    + $esxImpl | Get-ScsiLun <<<< | where {$_.LunType -eq "Disk"} | %{
    + CategoryInfo : NotSpecified: (:) [Get-ScsiLun], NullReferenceEx
    ception
    + FullyQualifiedErrorId : System.NullReferenceException,VMware.VimAutomati
    on.VimAutomation.Commands.Host.GetScsiLun

    Cannot index into a null array.
    At D:\Scripts\LUN-report.ps1:40 char:36
    + $scsiTab[$key] = $scsiTab[$key][ <<<< 0], $dsName, $scsiTab[$key]

    • Hi Ossie,
      It looks as if there is no ESX server found for the clustername you passed to the script. Could you check if this returns one or more ESX servers ?

      Get-Cluster "clustername" | Get-VMHost

      Where “clustername” is the first parameter you passed in the script call. That would be MyCluster17 in the Usage section sample calls.
      Luc.

  45. Why are you putting *screenshots* of a *console session* ? Wouldn’t copying the text be easier (go through a graphics program, crop the image, save then import the image in your blogging software VS copying two lines from the console)? Not to mention consume less bandwidth?

    Other than those details, looks neat.

  46. works great.. when the cluster names don’t have spaces in the names! ;-)

    (okay I didn’t get it to work 100% but the yadr works perfect – just no cluster names. I ran it against the entire vcenter. Sorted the CSV file for RDM=True and viewed the path name to infer the LUN connection/Host / cluster relationship.

    Very handy! Thanks! lots to (more) to learn!

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>