Setting LVM.EnableResignature issue with PowerCLI in vpshere 5.1 and Powercli 5.1 U2

[kluken]

We use SRM and like to make sure that when done with test that the LVM.EnableResignature is set back to 0 since we do relocate hosts often. I have tried 2 different ways to do this and both fail with "A specified parameter was not correct" All the samples I see online are for esx 4.x and below, I have not seen anyone verify this in 5.x.  We are 5.1U1 and latest powercli.

Any help would be greatly appreciated.

Method 1:

$vh contains the name of the host to be reset:

if ((Get-VMHostAdvancedConfiguration -vmhost $vh -Name LVM.EnableResignature).Values -ne 0){

     Set-VMHostAdvancedConfiguration -vmhost $vh -Name LVM.EnableResignature -Value 0 -Confirm:$false

}

Method 2:

Borrows code from functions I have seen online:

if ((Get-VMHostAdvancedConfiguration -vmhost $vh -Name LVM.EnableResignature).Values -ne 0){

			$esx = Get-View (Get-VMHost $vh).ID
			$optmgrMoRef = $esx.configManager.advancedOption
			$optmgr = Get-View $optmgrMoRef

			$optarray = $optmgr.QueryOptions("LVM.Enableresignature")
			$optarray[0].Value = 0
			$optmgr.UpdateOptions($optarray)

}

[kluken]

One thing I notice is when I just dump all the advancedOptions I do not even see LVM.EnableResignature. IIt works via esxcfg, so I wonder why it is not working via PowerCLI

[LucD · Accepted solution]

It looks as if the function from  9.  Re: Set LVM/EnableResignature = 1 with PowerCLI on ESX 4.1

works on 5.1 as well

Function Set-VMHostResignature {

    [CmdletBinding()]

    Param (

        [Parameter(

            Mandatory = $True,

            ValueFromPipeline = $True

        )]

        [VMware.VimAutomation.ViCore.Impl.V1.Inventory.VMHostImpl[]]$VMHost,

        [Parameter(

            Mandatory = $True,

            Position = 0

        )]

        [ValidateSet(0, 1)]

        [long]$Value

    )

    Begin {

        $Option = New-Object Vmware.Vim.Optionvalue -Property @{

             Key = "LVM.EnableResignature"

             Value = $Value

        }

        $OptionArray = $Option

    }

    Process {

        $VMHost | ForEach-Object {

            $ESX = Get-View $_.ID

            $OptMgr = Get-View $ESX.ConfigManager.AdvancedOption

            $OptMgr.UpdateOptions($OptionArray)

        }

    }

}

Get-VMHost | Set-VMHostResignature -Value 1

[kluken]

Yup, I found that and pulled in pieces into my script so mine works now, thanks! Not sure why the striaght forwaed Set-VMHostAdvancedConfiguration  did not work, but at least I have something.

foreach ($vh in $vmhosts) {

if ((Get-VMHostAdvancedConfiguration -vmhost $vh -Name LVM.EnableResignature).Values -ne 0){
  Write-Host Resignature value is enabled for host $vh
        Write-Host Resetting resignature value to disabled
 
     $Option = New-Object Vmware.Vim.Optionvalue -Property @{
             Key = "LVM.EnableResignature"
             Value = $Value
         }

            $OptionArray = $Option

            $ESX = Get-View $vh.ID
            $OptMgr = Get-View $ESX.ConfigManager.AdvancedOption
            $OptMgr.UpdateOptions($OptionArray)
  }
}