get esxi storage path details using powercli

[praveensf]

ran the below script but getting an error saying "Get-ScsiLunPath        Value cannot be null" , any help would be appreciated!!

$results= @()
foreach ($VMHost in $VMHosts) {
[ARRAY]$HBAs = $VMHost | Get-VMHostHba -Type "FibreChannel"

    foreach ($HBA in $HBAs) {
    $scsiluns = Get-ScsiLun -Hba $HBA -LunType "disk"
    foreach ( $scsilun in $scsiluns) {
    $pathState = $scsilun | Get-ScsiLunPath | Group-Object -Property state
    $pathStateActive = $pathState | ? { $_.Name -eq "Active"}
    $pathStateDead = $pathState | ? { $_.Name -eq "Dead"}
    $pathStateStandby = $pathState | ? { $_.Name -eq "Standby"}
    $results += "{0},{1},{2},{3},{4},{5}" -f $VMHost.Name, $HBA.Device, $VMHost.Parent, [INT]$pathStateActive.Count, [INT]$pathStateDead.Count, [INT]$pathStateStandby.Count
    }
}
}

ConvertFrom-Csv -Header "VMHost","HBA","Cluster","Active","Dead","Standby" -InputObject $results | Ft -AutoSize

ERROR:

Get-ScsiLunPath : 12/2/2015 1:49:18 PM    Get-ScsiLunPath        Value cannot be null.
Parameter name: array   
At line:13 char:29
+     $pathState = $scsilun | Get-ScsiLunPath | Group-Object -Property state
+                             ~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [Get-ScsiLunPath], VimException
    + FullyQualifiedErrorId : Core_BaseCmdlet_UnknownError,VMware.VimAutomation.ViCore.Cmdlets.Commands.Host.GetScsiLunPath

[LucD]

Could it be that you one or more HBA that have no LUNs ?

You could test if $scsiluns -eq $null before you start the foreach loop

[praveensf]

I'm pretty sure all the hba's have luns assigned to it in our environment. I did a ctrl+c while running the script and ran the following part manually.

Get-ScsiLun -Hba $HBA -LunType "disk"

CanonicalN ConsoleDeviceName              LunType         CapacityGB MultipathPolicy
ame                                                                                 
---------- -----------------              -------         ---------- ---------------
naa.514... /vmfs/devices/disks/naa.514... disk                20.000 Unknown        
naa.514... /vmfs/devices/disks/naa.514... disk               512.000 Unknown        
naa.514... /vmfs/devices/disks/naa.514... disk             8,192.000 Unknown        
naa.514... /vmfs/devices/disks/naa.514... disk             8,192.000 Unknown        
naa.514...                                disk                10.000 Unknown        
naa.514... /vmfs/devices/disks/naa.514... disk             8,192.000 Unknown        
naa.514... /vmfs/devices/disks/naa.514... disk             8,192.000 Unknown        
naa.514... /vmfs/devices/disks/naa.514... disk             8,192.000 Unknown        
naa.514... /vmfs/devices/disks/naa.514... disk             8,192.000 Unknown

[praveensf]

BTW I'm running this script across multiple hosts and I'm getting the same error.

[praveensf]

Please see below.............

Get-VMHost myhost.com | Get-ScsiLun | Get-ScsiLunPath

Get-ScsiLunPath : 12/2/2015 2:40:43 PM    Get-ScsiLunPath        Value cannot be null.
Parameter name: array   
At line:1 char:57
+ Get-VMHost myhost.com | Get-ScsiLun | Get-ScsiLunPath
+                                                         ~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [Get-ScsiLunPath], VimException
    + FullyQualifiedErrorId : Core_BaseCmdlet_UnknownError,VMware.VimAutomation.ViCore.Cmdlets.Commands.Host.GetScsiLunPath

Get-VMHost myhost.com | Get-ScsiLun

CanonicalN ConsoleDeviceName              LunType         CapacityGB MultipathPolicy
ame                                                                                 
---------- -----------------              -------         ---------- ---------------
naa.514... /vmfs/devices/disks/naa.514... disk             8,192.000 Unknown        
naa.514... /vmfs/devices/disks/naa.514... disk                20.000 Unknown        
naa.514... /vmfs/devices/disks/naa.514... disk             8,192.000 Unknown        
naa.514... /vmfs/devices/disks/naa.514... disk               512.000 Unknown        
naa.514... /vmfs/devices/disks/naa.514... disk             8,192.000 Unknown        
naa.514... /vmfs/devices/disks/naa.514... disk             8,192.000 Unknown        
naa.514... /vmfs/devices/disks/naa.514... disk             8,192.000 Unknown        
naa.514... /vmfs/devices/disks/naa.514... disk             8,192.000 Unknown        

[LucD]

Which PowerShell version are you using ?

Display the content of $PSVersionTable

[praveensf]

Get-PowerCLIVersion

PowerCLI Version
----------------
   VMware vSphere PowerCLI 6.0 Release 1 build 2548067
---------------
Component Versions
---------------
   VMWare AutoDeploy PowerCLI Component 6.0 build 2358282
   VMWare ImageBuilder PowerCLI Component 6.0 build 2358282
   VMware License PowerCLI Component 6.0 build 2315846
   VMware vSphere PowerCLI Component 6.0 build 2548068

$PSVersionTable

Name                           Value                                                                                                                                                    
----                           -----                                                                                                                                                    
PSVersion                      4.0                                                                                                                                                      
WSManStackVersion              3.0                                                                                                                                                      
SerializationVersion           1.1.0.1                                                                                                                                                  
CLRVersion                     4.0.30319.34209                                                                                                                                          
BuildVersion                   6.3.9600.16406                                                                                                                                           
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0}                                                                                                                                     
PSRemotingProtocolVersion      2.2

[LucD]

Can we try to find out for which specific LUN the error is triggered ?

Try something like this

Get-VMHost myhost.com | Get-ScsiLun | %{

    Write-Host "LUN $($_.CanonicalName)"

    Get-ScsiLunPath -ScsiLun $_

}

[praveensf]

LUN naa.514f0c5abcc0006e

Get-ScsiLunPath : 12/2/2015 3:46:37 PM    Get-ScsiLunPath        Value cannot be null.

Parameter name: array   

At line:5 char:5

+     Get-ScsiLunPath -ScsiLun $_

+     ~~~~~~~~~~~~~~~~~~~~~~~~~~~

    + CategoryInfo          : NotSpecified: (:) [Get-ScsiLunPath], VimException

    + FullyQualifiedErrorId : Core_BaseCmdlet_UnknownError,VMware.VimAutomation.ViCore.Cmdlets.Commands.Host.GetScsiLunPath

LUN naa.514f0c5abcc0003e

Get-ScsiLunPath : 12/2/2015 3:46:37 PM    Get-ScsiLunPath        Value cannot be null.

Parameter name: array   

At line:5 char:5

+     Get-ScsiLunPath -ScsiLun $_

+     ~~~~~~~~~~~~~~~~~~~~~~~~~~~

    + CategoryInfo          : NotSpecified: (:) [Get-ScsiLunPath], VimException

    + FullyQualifiedErrorId : Core_BaseCmdlet_UnknownError,VMware.VimAutomation.ViCore.Cmdlets.Commands.Host.GetScsiLunPath

LUN naa.514f0c5abcc0006f

Get-ScsiLunPath : 12/2/2015 3:46:37 PM    Get-ScsiLunPath        Value cannot be null.

Parameter name: array   

At line:5 char:5

+     Get-ScsiLunPath -ScsiLun $_

+     ~~~~~~~~~~~~~~~~~~~~~~~~~~~

    + CategoryInfo          : NotSpecified: (:) [Get-ScsiLunPath], VimException

    + FullyQualifiedErrorId : Core_BaseCmdlet_UnknownError,VMware.VimAutomation.ViCore.Cmdlets.Commands.Host.GetScsiLunPath

LUN naa.514f0c5abcc00063

Get-ScsiLunPath : 12/2/2015 3:46:38 PM    Get-ScsiLunPath        Value cannot be null.

Parameter name: array   

At line:5 char:5

+     Get-ScsiLunPath -ScsiLun $_

+     ~~~~~~~~~~~~~~~~~~~~~~~~~~~

    + CategoryInfo          : NotSpecified: (:) [Get-ScsiLunPath], VimException

    + FullyQualifiedErrorId : Core_BaseCmdlet_UnknownError,VMware.VimAutomation.ViCore.Cmdlets.Commands.Host.GetScsiLunPath

LUN naa.514f0c5abcc0005a

Get-ScsiLunPath : 12/2/2015 3:46:38 PM    Get-ScsiLunPath        Value cannot be null.

Parameter name: array   

At line:5 char:5

+     Get-ScsiLunPath -ScsiLun $_

+     ~~~~~~~~~~~~~~~~~~~~~~~~~~~

    + CategoryInfo          : NotSpecified: (:) [Get-ScsiLunPath], VimException

    + FullyQualifiedErrorId : Core_BaseCmdlet_UnknownError,VMware.VimAutomation.ViCore.Cmdlets.Commands.Host.GetScsiLunPath

LUN naa.514f0c5abcc00059

Get-ScsiLunPath : 12/2/2015 3:46:38 PM    Get-ScsiLunPath        Value cannot be null.

Parameter name: array   

At line:5 char:5

+     Get-ScsiLunPath -ScsiLun $_

+     ~~~~~~~~~~~~~~~~~~~~~~~~~~~

    + CategoryInfo          : NotSpecified: (:) [Get-ScsiLunPath], VimException

    + FullyQualifiedErrorId : Core_BaseCmdlet_UnknownError,VMware.VimAutomation.ViCore.Cmdlets.Commands.Host.GetScsiLunPath

LUN naa.514f0c5abcc00058

Get-ScsiLunPath : 12/2/2015 3:46:38 PM    Get-ScsiLunPath        Value cannot be null.

Parameter name: array   

At line:5 char:5

+     Get-ScsiLunPath -ScsiLun $_

+     ~~~~~~~~~~~~~~~~~~~~~~~~~~~

    + CategoryInfo          : NotSpecified: (:) [Get-ScsiLunPath], VimException

    + FullyQualifiedErrorId : Core_BaseCmdlet_UnknownError,VMware.VimAutomation.ViCore.Cmdlets.Commands.Host.GetScsiLunPath

LUN naa.514f0c5abcc00057

Get-ScsiLunPath : 12/2/2015 3:46:38 PM    Get-ScsiLunPath        Value cannot be null.

Parameter name: array   

At line:5 char:5

+     Get-ScsiLunPath -ScsiLun $_

+     ~~~~~~~~~~~~~~~~~~~~~~~~~~~

    + CategoryInfo          : NotSpecified: (:) [Get-ScsiLunPath], VimException

    + FullyQualifiedErrorId : Core_BaseCmdlet_UnknownError,VMware.VimAutomation.ViCore.Cmdlets.Commands.Host.GetScsiLunPath

[LucD]

Are you by any chance using EMC Powerpath ?

There have been issues reported with the Get-ScsiLunPath cmdlet in such environments

[praveensf]

unfortunately we are using powerpath. Is there any other way to get the path details ?? We have 100's of esxi hosts so manually checking them would be a real pain. We have been having PSOD's due to these dead paths so need identify the hosts immediately.

Thank you so much for your help!!

[LucD]

There is an alternative described in PowerCLI: Getting LUN paths when using EMC PowerPath/VE

[praveensf]

I'm not able to modify it the way I want, basically I'm looking for output something like  hostname, hba, activepaths, standbypaths, deadpaths

$dsHt = Get-View -ViewType Datastore -Property "Info","Summary.Type" -Filter @{"Summary.Type"="VMFS"} |
Select @{N="DSName";E={$_.Info.Vmfs.Name}}, @{N="Capacity";E={[math]::round( ($_.Info.Vmfs.Capacity / 1024 / 1024), 0)}},
@{N="Extent";E={$_.Info.Vmfs.Extent[0].DiskName}}, @{N="VMFS Version";E={$_.Info.Vmfs.Version}} |
Group-Object "Extent" -AsHashTable -AsString

$results = @()
Get-View -ViewType HostSystem -SearchRoot (Get-Cluster ClusterPod8).id -Property Name, Config.StorageDevice | %{
   $thisHostName = $_.Name
   $_.Config.StorageDevice.PlugStoreTopology.path | ?{$_.Name -match 'naa'} | Group-Object LunNumber | Sort-object Name | %{
     try {
       $thisNaaId = ($_.Group[0].Name -split "naa.")[1]
       $results += New-Object psobject -Property @{
         HostName = $thisHostName
         LunNumber = $_.Name
         PathCount = $_.Count
         DSName = $dsHt["naa.$thisNaaId"][0].DSName
         Capacity = $dsHt["naa.$thisNaaId"][0].Capacity
         "VMFS Version" = $dsHt["naa.$thisNaaId"][0]."VMFS Version"
       }
     } catch {
       Write-Warning "Found something with $thisNaaId"
     }
   } # end this Lun
} # end this host

$results |Group-Object pathcount

[lorried82]

Hi LucD - Looks like I am having the same issue due to using EMC PowerPath - Anyway to add in the details to the script for the State of the Path?

Thanks for any help!

$dsHt = Get-View -ViewType Datastore -Property "Info","Summary.Type" -Filter @{"Summary.Type"="VMFS"} |
Select @{N="DSName";E={$_.Info.Vmfs.Name}}, @{N="Capacity";E={[math]::round( ($_.Info.Vmfs.Capacity / 1024 / 1024), 0)}},
@{N="Extent";E={$_.Info.Vmfs.Extent[0].DiskName}}, @{N="VMFS Version";E={$_.Info.Vmfs.Version}} |
Group-Object "Extent" -AsHashTable -AsString$results = @()
Get-View -ViewType HostSystem -SearchRoot (Get-Cluster ClusterPod8).id -Property Name, Config.StorageDevice | %{
  $thisHostName = $_.Name
  $_.Config.StorageDevice.PlugStoreTopology.path | ?{$_.Name -match 'naa'} | Group-Object LunNumber | Sort-object Name | %{
    try {
      $thisNaaId = ($_.Group[0].Name -split "naa.")[1]
      $results += New-Object psobject -Property @{
        HostName = $thisHostName
        LunNumber = $_.Name
        PathCount = $_.Count
        DSName = $dsHt["naa.$thisNaaId"][0].DSName
        Capacity = $dsHt["naa.$thisNaaId"][0].Capacity
        "VMFS Version" = $dsHt["naa.$thisNaaId"][0]."VMFS Version"
      }
    } catch {
      Write-Warning "Found something with $thisNaaId"
    }
  } # end this Lun
} # end this host$results |Group-Object pathcount

Leave a Reply

[LucD]

I'm afraid I don't have an environment with EMC PowerPath, so I can't experiment.

Perhaps give this a try PowerCLI: Getting LUN paths when using EMC PowerPath/VE

[lorried82]

OK thanks - That was what I was using - however the output is not very useful.

[LucD]

Oops, sorry about that.
Isn't there an EMC forum where you could ask?