Associating WMI disk classes

Hi, I'm trying to create a PS script, that enumerates physical disks,
and for each, lists logical volumes. So, the output should be
something like:
\\.\PHYSICALDRIVE0
C: D: E:
\\.\PHYSICALDRIVE1
F: G:

...etc...

For this, I've used two WMI classes. The first one gets the physical
disks, the second one the logical volumes (see below). However, how
does these two get linked together?
I've tried using Associators of, but with no luck.

$strComputer = "."
$colWMIDiskDrives = get-wmiobject -class "Win32_DiskDrive" -namespace
"root\CIMV2" ´
-computername $strComputer
$colWMILogicalDisks = get-wmiobject -class "Win32_LogicalDisk" -
namespace "root\CIMV2" ´
-computername $strComputer

How about with just on WMI call:

PSH>gwmi Win32_LogicalDisk|select-object __PATH

__PATH
------
\\xxx\root\cimv2:Win32_LogicalDisk.DeviceID="C:"
\\xxx\root\cimv2:Win32_LogicalDisk.DeviceID="D:"
\\xxx\root\cimv2:Win32_LogicalDisk.DeviceID="E:"

I don't have a server to test whether it will handle properly multiple
logical disks per physical disk.

Marco

--
Microsoft MVP - Windows PowerShell
http://www.microsoft.com/mvp

PowerGadgets MVP
http://www.powergadgets.com/mvp

Blog:
http://marcoshaw.blogspot.com

"Thomas Makro" wrote:
You can't associate them directly. You first need to associate
Win32_DiskDrive with Win32_DiskPartition :

ASSOCIATORS OF {Win32_DiskDrive.DeviceID="\\.\PHYSICALDRIVE0"} WHERE
AssocClass = Win32_DiskDriveToDiskPartition

and then associate results of that query with Win32_LogicalDisk:

ASSOCIATORS OF {Win32_DiskPartition.DeviceID="Disk #0, Partition #0"} WHERE
AssocClass = Win32_LogicalDiskToPartition

You need to execute the second query for each object returned by the first
query.I don't have time to test this now, so I'm not sure about double or
single quotes.

Hope this helps.

--
urkec

I was able to run this on XP successfully but it fails on Win2003:

$DiskDrive = Get-WmiObject Win32_DiskDrive
$DiskDrive | foreach {$_.DeviceID}
$DiskDrive | foreach { $_.GetRelated("Win32_DiskPartition")} | foreach {$_.GetRelated("Win32_LogicalDisk")}
| foreach {$_.DeviceID}

\\.\PHYSICALDRIVE0
C:
D:


Building up on urkec worked on both versions:

$DiskDrive = Get-WmiObject Win32_DiskDrive
$DiskDrive | foreach {
$_.DeviceID
$d = gwmi -q "ASSOCIATORS OF {Win32_DiskDrive.DeviceID='$($_.DeviceID)'}
WHERE AssocClass = Win32_DiskDriveToDiskPartition" | foreach {$_.name}
$d | foreach { gwmi -q "ASSOCIATORS OF {Win32_DiskPartition.DeviceID='$_'}
WHERE AssocClass = Win32_LogicalDiskToPartition"} | foreach {$_.DeviceID}
}

\\.\PHYSICALDRIVE0
C:
D:

-----
Shay Levi
$cript Fanatic
http://scriptolog.blogspot.com

On Jan 29, 10:05*pm, urkec <ur...@xxxxxx> wrote: This should help:

$strComputer = "."
$colDiskDrives = Get-WmiObject Win32_DiskDrive -ComputerName
$strComputer

$colDiskDrives | ForEach-Object {
"Physical Disk:" + $_.caption + " -- " + $_.deviceid
$strDriveDeviceID = $_.deviceid
$query1 = "Associators of
{Win32_DiskDrive.DeviceID='$strDriveDeviceID'} Where
AssocClass=Win32_DiskDriveToDiskPartition"
$colPartitions = get-wmiobject -query $query1
$colPartitions | ForEach-Object {
"Disk Partition: " + $_.DeviceID
$strPartitionDeviceID = $_.DeviceID
$query2 = "Associators of
{Win32_DiskPartition.DeviceID='$strPartitionDeviceID'} Where
AssocClass=Win32_LogicalDiskToPartition"
$colLogicalDisks = Get-WmiObject -query $query2
$colLogicalDisks | ForEach-Object {
"Logical Disk: " + $_.deviceid
}
""
}
""
}

Output looks like this:

Physical Disk:SAMSUNG HD080HJ/P -- \\.\PHYSICALDRIVE0
Disk Partition: Disk #0, Partition #0
Logical Disk:

Disk Partition: Disk #0, Partition #1
Logical Disk: C:

Disk Partition: Disk #0, Partition #2
Logical Disk: D:

-aleksandar
http://powershellers.blogspot.com

PS Thank you /\/\o\/\/.

After chatting with Alexandair (his version works for me ctp2 / xp )
I came up woth this version :

$drives = Get-WmiObject Win32_DiskDrive -ComputerName $strComputer

$s = New-Object System.Management.ManagementObjectSearcher
$s2 = New-Object System.Management.ManagementObjectSearcher

$qPartition = new System.Management.RelatedObjectQuery
$qPartition.RelationshipClass = 'Win32_DiskDriveToDiskPartition'

$qLogicalDisk = new System.Management.RelatedObjectQuery
$qLogicalDisk.RelationshipClass = 'Win32_LogicalDiskToPartition'

$drives |% {
$_.Caption
$qPartition.SourceObject = $_
$s.Query = $qPartition
$s.get() |% {
$_.DeviceID
$qLogicalDisk.SourceObject = $_
$qLogicalDisk.Query = $q2
$s.get()
}
}

more about this way of working ou can also find here :
http://mow001.blogspot.com/2006/10/p...c2-series.html

might make a entry on my new blog also later

Greetings /\/\o\/\/

"Shay Levi" wrote:

Sorry wrong versoin
Correrion on script :

$drives = Get-WmiObject Win32_DiskDrive -ComputerName $strComputer

$s = New-Object System.Management.ManagementObjectSearcher
$s2 = New-Object System.Management.ManagementObjectSearcher

$qPartition = new-object System.Management.RelatedObjectQuery
$qPartition.RelationshipClass = 'Win32_DiskDriveToDiskPartition'

$qLogicalDisk = new-object System.Management.RelatedObjectQuery
$qLogicalDisk.RelationshipClass = 'Win32_LogicalDiskToPartition'

$drives |% {
$_.Caption
$qPartition.SourceObject = $_
$s.Query = $qPartition
$s.get() |% {
$_.DeviceID
$qLogicalDisk.SourceObject = $_
$s2.query = $qLogicalDisk
$s2.get()
}
}

enjoy,

Greetings /\/\o\/\/

"/\/\o\/\/ [MVP]" wrote:

With Identing ;-)
http://thepowershellguy.com/blogs/po...owershell.aspx

"/\/\o\/\/ [MVP]" wrote:

On Jan 30, 12:07 am, /\/\o\/\/ [MVP] <o...@xxxxxx>
wrote: Thanks everybody, that's just what I needed.
Keep up the good work.