Extending a disk on a window system using PowerShell and PowerCLI

Identify the correct disk to extend on OS

param(

[string]$drivename #ex: C or D

$percentage = 1.1

)

try{

$moddrivename = $drivename + ":"

$extendnumber = [math]::Round(((Get-WmiObject -Class Win32_LogicalDisk | where DeviceID -like $moddrivename | select -ExpandProperty Size) /1TB)*$percentage)

if ($extendnumber -ge 2) {

return "2TBDisk"

}

$searchstring = '\\' +$env:computername+ '\root\cimv2:Win32_LogicalDisk.DeviceID="' +$drivename+ ':"'

$disknumberlong = Get-WmiObject -Class Win32_LogicalDiskToPartition | where Dependent -Like $searchstring | select -ExpandProperty Antecedent

$disknumberlong -match 'Disk #(\d+)' | out-null

$disknumber = $matches[0].split('#')[1]

return $disknumber

} catch {

throw

}

Extending VM disk

param(

[String]$serverfqdn,

[String]$disknumber, #passed from the previous script

[double]$percentage=1.1 #percentage at which the disk should be extended by

)

Get-Module -Name VMware* -ListAvailable | Import-Module #call PowerCLI module

$vcusername = ''

$vcpassword = ''

$hostname = $serverfqdn.split(".")[0]

if ($hostname -like 'some naming convention') {

$vcservers = @("vc1","vc2")

foreach ($vc in $vcservers) {

Connect-VIServer -Server $vc -User $vcusername -Password $vcpassword

if ($vm = Get-VM $hostname) {

$correctvc = $vc

break

}

else {

Disconnect-VIServer -Server $vc -Confirm:$false

continue

}

}

} elseif ($hostname -like 'some naming convention 2') {

$vcservers = @("vc3","vc4")

foreach ($vc in $vcservers) {

Connect-VIServer -Server $vc -User $vcusername -Password $vcpassword

if ($vm = Get-VM $hostname) {

$correctvc = $vc

break

}

else {

Disconnect-VIServer -Server $vc -Confirm:$false

continue

}

}

}

#we assume most disks are using the first controller

$SCSI = '0:'+$disknumber

#heres the tricky part, pass each disk on the VM to get-scsicontroller which returns it's respective busnumber and unit number. Then get the disk name by filtering the result using the $SCSI variable.

$diskname = Get-VM $hostname | Get-HardDisk | Select @{N='VM';E={$_.Parent.Name}},Name,@{N='Node';E={'{0}:{1}' -f ((Get-ScsiController -HardDisk $_).ExtensionData.BusNumber),$_.ExtensionData.UnitNumber}} | where Node-like $SCSI | select Name -ExpandProperty Name

$disksize = Get-HardDisk -VM $hostname | where {$_.Name -eq $diskname} | select -ExpandProperty CapacityGB

$newdisksize = $disksize*$percentage

Write-Host $newdisksize

Get-HardDisk -VM $hostname | where {$_.Name -eq $diskname} | Set-HardDisk -CapacityGB $newdisksize -confirm:$false

Disconnect-VIServer -Server $correctvc -Confirm:$false

Extending disk on OS

param(

[string]$drivename,

[double]$percentage=0.1

)

try{

"RESCAN" | diskpart

$moddrivename = $drivename + ":"

$extendnumber = [math]::Round(((Get-WmiObject -Class Win32_LogicalDisk | where DeviceID -like $moddrivename | select -ExpandProperty Size) /1MB)*$percentage)

write-host $extendnumber

$searchstring = '\\' +$env:computername+ '\root\cimv2:Win32_LogicalDisk.DeviceID="' +$drivename+ ':"'

$disknumberlong = Get-WmiObject -Class Win32_LogicalDiskToPartition | where Dependent -Like $searchstring | select -ExpandProperty Antecedent

$disknumberlong -match 'Disk #(\d)'

$disknumber = $matches[0].split('#')[1]

$string1 = "select disk " + $disknumber

$string2 = "select volume " + $drivename

$string3 = "extend size=" + $extendnumber

$commands = @(

$string1,

$string2,

$string3

)

$commands | diskpart

Write-Host "Disk extension on OS layer completed"

exit 0

} catch {

Write-Host "Disk extension on OS layer failed"

exit -1

}