Get-Content PowerCLI to apply IOPS settings on all LUNs

[habibalby]

Hi,

I want to change the default iops settings for all LUNs, I found it a bit tedious doing it for each LUN; What I want to do is to put all the LUNs WWN name to a file and read the file to apply

esxcli storage nmp psp roundrobin deviceconfig set --type=iops --iops 1  --device=

Get-Content C:\LUNPaths.txt | esxcli I don't know how to do it in esxcli.

Thanks,

[LucD]

Try something like this

Get-Content C:\LUNPaths.txt | %{
  $esxcli.storage.nmp.psp.roundrobin.deviceconfig.set($null,$_,[long]1,"iops",$null)
}

[habibalby]

Hi LucD,

Thanks for your reply, I have tried the code but it doesn't work.

Thanks,

[LucD]

Are you on vSPhere 5.* ?

The Get-EsxCli commands have changed between 4.* and 5.*

Any error messages btw ?

And what entries do you actually have in the file, canonicalnames/runtime names/... ?

If it are really the WWN of the LUNs, the script will have to convert those WWN to canonicalname.

You can do a

$esxcli.storage.nmp.device.list()

to see what should be passed for the device.

[habibalby]

Hello,

I have the following info in the file; and I'm on version 5.0.0,xxxx

naa.6006048c2dbfafbf370eb3513331ae4a
naa.6006048c8b3ad5764c3a242e8d69901c
naa.6006048cb2c1d57e0317e40d3edff00d
naa.6006048cc71d62f2e4fe28c98afe53b4
naa.6006048cda0003d9750feb982758de

Error:

You cannot call a method on a null-valued expression.
At D:\Scripts\ChangeIOPsTo1.ps1:2 char:3
+
$esxcli.storage.nmp.psp.roundrobin.deviceconfig.set($null,$_.Device,1,"iops",$
...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~
    + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull

You cannot call a method on a null-valued expression.
At D:\Scripts\ChangeIOPsTo1.ps1:2 char:3
+
$esxcli.storage.nmp.psp.roundrobin.deviceconfig.set($null,$_.Device,1,"iops",$
...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~
    + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull

You cannot call a method on a null-valued expression.
At D:\Scripts\ChangeIOPsTo1.ps1:2 char:3
+
$esxcli.storage.nmp.psp.roundrobin.deviceconfig.set($null,$_.Device,1,"iops",$
...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~
    + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull

You cannot call a method on a null-valued expression.
At D:\Scripts\ChangeIOPsTo1.ps1:2 char:3
+
$esxcli.storage.nmp.psp.roundrobin.deviceconfig.set($null,$_.Device,1,"iops",$
...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~
    + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull

You cannot call a method on a null-valued expression.
At D:\Scripts\ChangeIOPsTo1.ps1:2 char:3
+
$esxcli.storage.nmp.psp.roundrobin.deviceconfig.set($null,$_.Device,1,"iops",$
...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~
    + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull

[LucD]

It looks as if $esxcli is $null.

Did you do a

$esxcli = Get-EsxCli -VMHost MyEsx

before running the script ?

[habibalby]

No I don't.

Thanks,

[habibalby]

Hi,

Found script it does the job but it loops through the whole WWN by specifying the WWN vendor array number instead of going to a specific set of LUNs to target them and do the required changes.

## Script Variables

$VC = Read-Host 'Please Enter VirtualCenter Name'

$mycluster = Read-Host 'Please Enter The Cluster Name or DataCenter'

$DiskID = "naa.600"

### Connect to VirtualCenter

Connect-VIServer $VC | Out-Null

### Loop Through Cluster or DC to get ESXCLI instances and run commands

$esxHosts = Get-VMHost -Location $mycluster | Sort Name

foreach($esx in $esxHosts)

{

     ### $esxcli.system.hostname.get() ###

$esxcli = Get-EsxCli -VMHost $esx

     $esxcli.storage.nmp.device.list() | where {$_.Device -match  $DiskID}| %  {$esxcli.storage.nmp.psp.roundrobin.deviceconfig.set($null,$_.Device,1,"iops",$null)  }

}

#Disconnect from VirtualCenter

Disconnect-VIServer $VC -Confirm:$false | Out-Null

I think in this script the veritable $DiskID ="naa.600" it could be $DiskID = Get-Content -Path C:\WWN.txt to read through the file and get only those LUNs which they require the changes... will try it tomorrow.

Thanks,

[LucD · Accepted solution]

You could read the WWN into an array and then use the Contains operator to check if the current device belongs to your list of targets.

Something like this

$wwn = Get-Content -Path C:\WWN.txt

$esxHosts = Get-VMHost -Location $mycluster | Sort Name 
foreach($esx in $esxHosts)
{
    $esxcli = Get-EsxCli -VMHost $esx
    $esxcli.storage.nmp.device.list() | where {$wwn -contains $_.Device}| %{
        $esxcli.storage.nmp.psp.roundrobin.deviceconfig.set($null,$_.Device,1,"iops",$null)  
    }
}

[habibalby]

It works great

PowerCLI D:\Scripts> .\ChangeIOPsTo1.ps1
true
true
true
PowerCLI D:\Scripts>

Highly appreciated.

[shifter]

Not sure if things changed between 5.0 & 5.1 but trying to set a value required 6 arguments for me.  I ended up doing something similar to this:

$esxcli.storage.nmp.psp.roundrobin.deviceconfig.set(0, $null, $_.Device, 1, "iops",0)

The arguments are Bytes, Config file, Device, IOPS, Type, UseAno

[LucD]

Things changed in 5.1, there is an extra parameter for the config file (2nd parameter).