PowerCLI, Multipathing change: fixed RDM and VMFS of Round Robin

With the new improvements in vSphere native mulit pathing (NMP) in 5.1, I tried to change my LUN to use repetition alternated according to EMC with my flare VNX practices code.

However, I also have MSCS clusters that don't support a fixed mode according to the http://kb.vmware.com/kb/1037959.

Later, I want to get all my VMFS volumes and set them to Round Robin and let all of my RDMs set to fixed.

I'm hoping to dynamically so that I can leave it with the admin here to run whenever he wants, but I'm fighting to achieve.

What I've tried so far.

I can get all my LUNS with these commands.

$esxcli= Get-EsxCli

$Allmyluns = Get - esxcli.storage.nmp.device.list () | Where {$_ .device - like 'naa.*'}

I can get all my RDM with this command

$RDMS = get - vm | Get-hard drive | where {$_.} SCSIcanonicalname - like 'naa.* ' | Select SCSIcanonicalname

I can put the method once I have the storage in this way

$esxcli= Get-EsxCli

Foreach ($lun in $allmyluns({

$esxcli.nmp.device.setpolicy($null, $_.Name,"VMW_PSP_RR")

}

I have also thought about writing a csv or text file with the first command and trying to remove the entries with the second command but that is a bit past me, and I may be trying to over-complicate things unnecessarily.


But what I can’t do is work out how to get a list whenever I want that has all the VMFS LUNS but not any of the RDM LUNS. So I can dynamically feed this into a script which updates VMFS pathing to Round Robin.


Any help, input or ideas would be greatly appreciated

This should help you all VMFS LUNS.

Get-Datastore | where {$_.Type -eq "VMFS"} | %{  $_.ExtensionData.Info.Vmfs.Extent | %{    $_.DiskName  }}

Tags: VMware

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