I wrote this script to figure out what netapp lun is used on each vm via ISCSI. Currently on about around 200 VM and 8 hosts it takes 40 Mins to run. This being my 3rd powershell script i am sure I could speed up its processing and was hoping someone could point me in the right direction.
This generates a csv file with the following header.
Hostname DiskID CapacityG HD Path ScsiCanonicalName LunID Netapp Path
Also in function searchfilers i didn't know if anyone knew how to dynamically get this information, i have looked for hours/days and couldn't find a way besides hard coding it. This function is needed to know what netapp filer to connect to.
param([string]$VC)Import-ModuleDataONTAP#################Functions##############################################function GetNetappPath([string]$VMHost,[string]$VMHDLunID,[string]$RuntimeName) {$stor= get-view(Get-VMHostStorage-VMHost$VMHost)$IscsiWWN= $stor.StorageDeviceInfo.HostBusAdapter | where{$_.GetType().Name -eq"HostInternetScsiHba"} | Select-First1 -expandpropertyIScsiNameWrite-Host"Found ISCSI NAME: $IscsiWWN on Host $VMHost"$c= SearchFilers $IscsiWWN$RuntimeNameWrite-Host"Netapp path: $c"return $c}function SearchFilers([string]$IscsiWWN,[string]$RuntimeName){switch -wildcard($RuntimeName) { #Add all you vmware runtime names here with what filer "vmhba40:C0:T0*"{$NetappFiler= "x.x.x.x"}#ip address default {Write-host"Error! determining filer - $RuntimeName not found";read-host} }Write-host"Connecting to $NetappFiler"connect-nacontroller$NetappFiler| out-null$Igroup= get-nalun| Get-Nalunmap| SelectName,Initiators | Where{$_.Initiators -like$IscsiWWN} | Select-First1 -expandpropertyName$a= get-nalunbyigroup$Igroup$VMHDLunID| Select-ExpandPropertyPath#Write-Host"SearchFilers function: $a"$a= "$NetappFiler$a"#filerip\lunpathreturn $a}function GetScsiTarget([string]$VMHost,[string]$SCSICanonicalName) {$Lun= Get-SCSILun$SCSICanonicalName-VMHost$VMHost#(Get-VM $VMName).VMHost$RuntimeName= $Lun| Select-ExpandPropertyRuntimeName return $RuntimeName}#################Functions######################################################################$PathtoCSV= "C:\temp\VMlunIDNetappPath.csv"########################If ($VC){$strVC= $VC}ELSE{$strVC= Read-Host"What is the Vcenter hostname?"}If (!$strVC){Write-Host"Error: Vcenter not entered";exit}Connect-VIServer-Server$strVC #Enter your vCenter Server#Create Header"Hostname,DiskID,CapacityG,HD Path,ScsiCanonicalName,LunID,ESX Host,Netapp Path"> $PathtoCSVWrite-Host"Getting VM Information from Vcenter. This can take awhile based on how many VM you have"$Disks= Get-VM| Get-HardDisk| Where{$_.DiskType -eq"RawPhysical"}Write-Host"Completed getting VM Information from Vcenter"Foreach($Diskin $Disks) {$VMName= $_.Parentwrite-host"VM Name: $VMName"$VMHDname= $_.Namewrite-host"Hard drive ID: $VMHDname"$VMCapacityGB= $_.capacityGBwrite-host"Lun Capacity(GB): $VMCapacityGB"$VMHDPath= $_.filenamewrite-host"RAW VMDK Path: $VMHDPath"$VMScsiCanonicalName= $_.ScsiCanonicalNamewrite-host"$ScsiCanonicalName: $VMScsiCanonicalName"$VMHost= Get-VM$VMName| Select-ExpandPropertyHostwrite-host"ESX Host: $VMHost"$RuntimeName= GetScsiTarget $VMHost$Disk.SCSICanonicalNamewrite-host"RuntimeName: $RuntimeName"$VMHDLunID= $RuntimeName.Substring($RuntimeName.LastIndexof(“L”)+1)Write-Host"LunID: $VMHDLunID"$NetappPath= GetNetappPath $VMHost$VMHDLunID$RuntimeNameWrite-host"PathtoNetapp: $NetappPath"$Combine= $VMName,$VMHDname,$VMCapacityGB,$VMHDPath,$VMScsiCanonicalName,$VMHDLunID,$VMHost,$NetappPathWrite-Host"Writing to $PathtoCSV"$Combine-join",">> $PathtoCSV}