A few weeks back I wanted to verify some path counts per LUN. This is typically pretty easy and something that can be written as a one liner using standard PowerCLI cmdlets as such:<\/p>\n
\r\nGet-VMHost | Get-ScsiLun | Get-ScsiLunPath\r\n<\/pre>\nHowever, the above command wouldn’t return results in the customer environment. After doing some testing, I realized that the issue was likely related to the presence of EMC PowerPath\/VE for multipathing on the hosts. When using the GUI to view storage\/LUN properties other details like Path Selection Plugin (PSP) is also missing… but the path information I wanted was still available. It took a little bit of poking around in the Get-View output, but I was able to come up with something to get me the data I was looking for. Its not real pretty, but it is fast and helped me answer a couple questions. I figured I would share the code here here in case anyone else runs into this issue. If you have any comments\/suggestions on how to make this code better\/more complete please post them in the comments section. <\/p>\n
\r\n$dsHt = Get-View -ViewType Datastore -Property \"Info\",\"Summary.Type\" -Filter @{\"Summary.Type\"=\"VMFS\"} | \r\nSelect @{N=\"DSName\";E={$_.Info.Vmfs.Name}}, @{N=\"Capacity\";E={[math]::round( ($_.Info.Vmfs.Capacity \/ 1024 \/ 1024), 0)}}, \r\n@{N=\"Extent\";E={$_.Info.Vmfs.Extent[0].DiskName}}, @{N=\"VMFS Version\";E={$_.Info.Vmfs.Version}} | \r\nGroup-Object \"Extent\" -AsHashTable -AsString\r\n\r\n$results = @()\r\nGet-View -ViewType HostSystem -SearchRoot (Get-Cluster ClusterPod8).id -Property Name, Config.StorageDevice | %{\r\n $thisHostName = $_.Name\r\n $_.Config.StorageDevice.PlugStoreTopology.path | ?{$_.Name -match 'naa'} | Group-Object LunNumber | Sort-object Name | %{\r\n try {\r\n $thisNaaId = ($_.Group[0].Name -split \"naa.\")[1]\r\n $results += New-Object psobject -Property @{\r\n HostName = $thisHostName\r\n LunNumber = $_.Name\r\n PathCount = $_.Count\r\n DSName = $dsHt[\"naa.$thisNaaId\"][0].DSName\r\n Capacity = $dsHt[\"naa.$thisNaaId\"][0].Capacity\r\n \"VMFS Version\" = $dsHt[\"naa.$thisNaaId\"][0].\"VMFS Version\"\r\n }\r\n } catch {\r\n Write-Warning \"Found something with $thisNaaId\"\r\n }\r\n } # end this Lun\r\n} # end this host\r\n\r\n$results |Group-Object pathcount\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"A few weeks back I wanted to verify some path counts per LUN. This is typically pretty easy and something that can be written as a one liner using standard PowerCLI cmdlets as such: Get-VMHost | Get-ScsiLun | Get-ScsiLunPath However, … Continue reading