Change existing controller scsi

[AsharBado]

Hello,

I want to unmount and/or mount a RDM disk on a VM plus to change the controller id position.

The script works well but i want to change the scsi position on the Controller (for exampl, change the controller id of an existing disk (0:1) to (1:0)) but i can't find the right command.

# Mount or Umount an RDM disk

$delrdmlist = @()
$addrdmlist = @()
$nom_vm_del = @()
$naaid_del = @()
$nom_vm_add = @()
$naaid_add = @()

$delrdmlist = Import-CSV "C:\Users\Ashar\Documents\RDM\del_vm_rdm_list.csv"
$addrdmlist = Import-CSV "C:\Users\Ashar\Documents\RDM\add_vm_rdm_list.csv"

function Remove_RDM {

foreach ($delrdm in $delrdmlist)
{
$nom_vm_del = $delrdm.name
$naaid_del = $delrdm.naaid

get-vm $nom_vm_del | Get-HardDisk -DiskType "RawVirtual" | Remove-HardDisk -Confirm:$false -DeletePermanently

Write-Host "The RDM $naaid_del unmouted on VM $nom_vm_del" -ForegroundColor Green
}
}

function Add_RDM {

foreach ($addrdm in $addrdmlist)
{
$nom_vm_add = $addrdm.name
$naaid_add = $addrdm.naaid

New-HardDisk -VM $nom_vm_add -DeviceName /vmfs/devices/disks/$naaid_add -DiskType RawVirtual -Persistence persistent -Confirm:$false

Write-Host "The RDM $naaid_add was mounted on VM $nom_vm_add" -ForegroundColor Green
}
}

Write-Host ""
Write-Host "====== vCenter : $vCenterConnected ======" -ForegroundColor Green
Write-Host ""
Write-Host "1 - Unmount RDM"
Write-Host "2 - Mount RDM"
Write-Host ""
Write-Host ""

$choice = Read-Host "Choose your selection "

do {

switch ($choice) {
'1'{

Remove_RDM
}
'2'{

Add_RDM
}
}
} until (($choice -eq '1') -or ($choice -eq '2')

Thank you for your help !

Ashar

[LucD]

You will need to assign a new SCSI controller (New-ScsiController) to the VM, and then use the Controller parameter, with the newly created controller, on the New-Harddisk cmdlet.

[AsharBado]

Hello Luc,

Thank you for your reply.

I want just to set an existing Controller, not to create a new Scsi Controller.

Best regards.

[AsharBado]

My csv file is like this :

vmname,naaid,SCSIBUSNUMBER,UNITNUMBER
vmtest,naa.60060e800729270000302927000005da,0,4

[LucD]

Something like this Solved: Re: Script for attaching multiple existing disk to... - VMware Technology Network VMTN

[AsharBado]

Hello,

I dont' understand the last part of the script.

My wish is to have a script who can add a rdm disk and configure the controller+unitnumber.

Can you help me please?

[LucD]

What don't you understand about that code?

[AsharBado]

Hello Luc,

I don't understand this part of the script (sorry i am not an powercli expert) :

# Add the VMDK

    $spec = New-Object VMware.Vim.VirtualMachineConfigSpec

    $device = New-Object VMware.Vim.VirtualDisk

    $device.Backing = New-Object VMware.Vim.VirtualDiskFlatVer2BackingInfo

    $device.Backing.Filename = $vmdk.datastorepath

    $device.UnitNumber = $vmdk.UNITNUMBER

    $device.Backing.DiskMode = 'persistent'

    $device.ControllerKey = $controller.ExtensionData.Key

    $device.Key = -10

    $devChange = New-Object VMware.Vim.VirtualDeviceConfigSpec

    $devChange[0].Device = $device

    $devChange[0].Operation = 'add'

    $spec.DeviceChange += $devChange

    $vm.ExtensionData.ReconfigVM($spec)

How can i adapt this this for my need?

[LucD]

I'm not sure what exactly you want me to do.
The code is attaching a harddisk to a specific controller and with a specific unit number.
Since that functionality is not available through the cmdlet, the script uses the API method.

If you are not experienced with PowerCLI or the vSphere API I don't know how to explain the code to you.

[randylawrence42]

First and foremost I want to really thank LucD for all of the amazing knowledge that you post on this forum.  I am simply amazed at how fast you return Answers on this blog and how you can articulate them so well.  I read it daily when I can and use it as my primary learning tool for powercli and powershell. 

As for this issue I totally understand the users frustrations.

Not having an easy way to map SCSI IDs to VMs with the New-HardDisk Command-let.

It makes it very hard to deploy solutions like Oracle RAC and Microsoft Failover Clusters.

This same issue forced me to learn PowerShell and PowerCli at a much deeper level.

I created a series of powershell functions just for this reason to fill this gap.

I give all of the programing logic credit to contributors like LucD as I understand the code but not at the level they do.

I was able to reverse engineer code from this site and others to create a series of powershell functions that allow me to Add VM HardDisks using SCSI IDs : VDN : VirtualDeviceNodes.

I used the PowerShell Methodologies learned from Industry Leaders like Jeff Hicks to make these functions. 

There is a series of them as they use the PowerShell Way of Each Function should do one specific Task.

I can share with the community. 

They have been tested in lab but come without any warranty.  I will do my best to help depending on free cycles.

I know they work.  They have been tested and used  for around 6 months now. 

I should have posted them sooner but got busy on some other IT Projects for other clients.

I wanted to finish some help files in the functions and post to github but never got around to it.

They key is they are gold and work !!!!

-RL

[randylawrence42]

Here is a list of function for RDMs I created.

<New-RdmDiskFp>

Creates New RDM Disk on Virtual Machine Using Full (VmdkFilePath) as Parameter Input

Requires following facts to be gathered manually 

(diskNAA#) = RDM Disk Serial Number , Canonical Name 

    : Get from Storage Team

(VmdkFilePath) = Full Path to VMDK File on DataStore : Example : '[DataStoreName] rl-centclone1/rl-centclone1_OraTable1_3x3.vmdk’

    : VMDK File Name of Youre Choice : Must Supply 

    :  Note : Must Supply .vmdk  or command will fail

Uses VMware API Method with (ReconfigVM_Task) 

Parameters = -VMName , -VirtualDeviceNode,  -VmdkFilePath, -diskNAA, -MultiWriter

Example1  

New-RdmDiskFn -VMname ora1 -VirtualDeviceNode 1:12 -VmdkFilePath ‘ [OraRedo1] ora1/ora1_Redo1_1x12_b4c44.vmdk’ -diskNAA naa.68ccf09800966e574ff9f556ed5b4c44

Example2  (MW)

New-RdmDiskFn -VMname ora1 -VirtualDeviceNode 1:12  -VmdkFilePath ‘ [OraRedo1] ora1/ora1_Redo1_1x12_b4c44.vmdk’  -diskNAA naa.68ccf09800966e574ff9f556ed5b4c44 -MultiWriter

<New-RdmDiskFn>

Creates New RDM Disk Using (DataStore) and (FileName) as Parameter Input

Little easier to Input Parameters than Full VmdkFilePath

Automatically Stitches and Creates (VmdkFilePath) from (DataStore) and (FileName) Parameter Input

Requires following facts to be gathered manually

(diskNAA#) = RDM Disk Serial Number , Canonical Name 

    : Get from Storage Team 

(FileName) = VMDK FileName of youre Choice : Example : ora1_Redo1_1x12_b4c44

    : Note do not put .vmdk as it will cause duplicate extension

Uses VMware API Method with (ReconfigVM_Task) 

Parameters = -VMName , -VirtualDeviceNode, -DataStore , -FileName, -diskNAA -MultiWriter

Example1 

New-RdmDiskFn -VMname ora1 -VirtualDeviceNode 1:12 -DataStore OraRedo1 -FileName ora1_Redo1_1x12_b4c44 -diskNAA naa.68ccf09800966e574ff9f556ed5b4c44

Example2 (MW)

New-RdmDiskFn -VMname ora1 -VirtualDeviceNode 1:12 -DataStore OraRedo1 -FileName ora1_Redo1_1x12_b4c44 -diskNAA naa.68ccf09800966e574ff9f556ed5b4c44 -MultiWriter

<Mount-RdmDiskFp>

Mounts RDM HardDisks Using Full (VmdkFilePath) as Parameter Input

Used to Mount RDM (MW) Disks to Secondary Nodes

Requires (VDN) (VmkFilePath) and (DiskNAA) Number 

Manually Use (Get-OraDiskInfo) Function to gather these facts from Primary Node

Uses VMware API Method with (ReconfigVM_Task) 

Parameters = -VMName , -VirtualDeviceNode, -VmdkFilePath, -diskNAA,  -MultiWriter

Example1

Mount-RdmDiskFp -VMname rl-centClone2 -VirtualDeviceNode 1:12 -VmdkFilePath '[Sempra-OraRedo1] rl-centClone1/rl-centClone1_OraRedo1_1x12_b4c44.vmdk' -diskNAA naa.68ccf09800966e574ff9f556ed5b4c44 -MultiWriter

Example2

Mount-RdmDiskFp -VMname rl-centClone2 -VirtualDeviceNode 1:12 -VmdkFilePath '[Sempra-OraRedo1] rl-centClone1/rl-centClone1_OraRedo1_1x12_b4c44.vmdk' -diskNAA naa.68ccf09800966e574ff9f556ed5b4c44 -MultiWriter

<DisMount-RdmDiskVdn>

** Uses (Get-OraDiskInfo) Function to gather facts

Unmounts RDM HardDisks using (VDN) as Parameter Input

Leaves VMDK Files In Place on DataStore 

Typically Used to Unmount Shared (MW) Disks on Secondary Nodes 

RDM (MW) HardDisks are Shared and accessed by Primary Node so can not be deleted by Secondary Nodes

Uses (remove-harddisk) Command Under the Covers

Parameters = -VMName , -VirtualDeviceNode

Example1

DisMount-MwDiskVdn -VMname rl-centClone2 -VirtualDeviceNode 1:22

<Remove-RdmDiskVdn>

** Uses (Get-OraDiskInfo) Function to gather facts

Deletes (RDM) HardDisks using (VDN) as Input Identifier

Deletes VMDK File from DataStore 

** Note This is just pointer file so Array LUN is still Valid.  No Data Loss on Array Lun

Uses (remove-harddisk) Command with -DeletePermanently Flag

Parameters = -VMName, VirtualDeviceNode

Example1

Remove-RdmDiskVdn -VMname rl-centClone1 -VirtualDeviceNode 1:12

<Remove-RdmApiVdn>

** Uses (Get-OraDiskInfo) Function to gather facts

Does Same Thing as <DisMount-RdmDiskVdn> but uses API instead of (remove-harddisk)

Unmounts RDM HardDisks using (VDN) as Input Identifier

Leaves VMDK Files In Place on DataStore 

Typically Used to Unmount Shared (MW) Disks on Secondary Nodes

Uses VMware API Method with (ReconfigVM_Task) 

Parameters = -VMName, VirtualDeviceNode

Example1

Remove-RdmDiskVdn -VMname rl-centClone1 -VirtualDeviceNode 1:12

[randylawrence42]

Most of the function rely on another function to gather facts and feed to Disk Functions.

This function I created is called (Get-OraDiskInfo)

It is like gold in oracle RAC Environments when you need to correlate UUIDs and NAAIDs to vdisk  :VDNs.  Virtual Device Nodes : Scsi IDs.

I have this one in a separate module that I Load.  

I will start off by posting this Glue function (Get-OraDiskInfo) and the RDM Functions.

You can play around with them for starters.

Once you get used to the basic AdHoc RDM Function Usage I will upload another wrapper function that uses CSV Input to map out RDMs to VM Nodes.

[randylawrence42]

I added the RDM Functions to zip file and attached.

Just unzip and load the ps1 file in ISE.

Then Start Playing Around in a test environment. 

I will try to post some Playbooks with examples if people are interested.

It is a .ps1 file with all of the RDM Functions and the Wrapper Function (Get-OraDiskInfo).

Make sure you Load both Get-OraDiskInfo Function into memory when using Functions that Rely on it.

I would suggest creating a powershell module to load all at once or just load all of the function in ISE Session.

I typically run from ISE in more of an administrator AD Hoc Mode.  But will use VSCODE When necessary.

-RL