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PowerShell for Failover Clustering: CSV Free Disk Space (and other info)

PowerShell for Failover Clustering: CSV Free Disk Space (and other info)

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external content: http://blogs.msdn.com/b/clustering/archive/2010/06/19/10027366.aspx

Here are the CSV volumes in my cluster. Note that Cluster Disk 10 has two partitions.

To find the free disk space through PowerShell, the information is available inside the objects returned by Get-ClusterSharedVolume. You can easily see that information by piping the output to Format-Custom: PS> Get-ClusterSharedVolume "Cluster Disk 1" | fc *

Here is an example. Note that I’m just getting this information for one CSV disk (Cluster Disk 1), but you can also get it for all CSVs on the cluster by running: PS > Get-ClusterSharedVolume | fc *

Now let’s look at the full output:

PS C:\> Get-ClusterSharedVolume "Cluster Disk 1" | fc *

class ClusterSharedVolume

{

Name = Cluster Disk 1

State = Online

OwnerNode =

class ClusterNode

{

Name = ahmedbc1-n2

State = Up

}

SharedVolumeInfo =

[

class ClusterSharedVolumeInfo

{

FaultState = NoFaults

FriendlyVolumeName = C:\ClusterStorage\Volume2

Partition =

class ClusterDiskPartitionInfo

{

Name = \\?\Volume{ef349066-525c-11df-8261-001e4fe757b6}

DriveLetter =

DriveLetterMask = 0

FileSystem = NTFS

FreeSpace = 17665183744

MountPoints =

[

]

PartitionNumber = 1

PercentFree = 84.24681

Size = 20968370176

UsedSpace = 3303186432

HasDriveLetter = False

IsCompressed = False

IsDirty = Unknown

IsFormatted = True

IsNtfs = True

IsPartitionNumberValid = True

IsPartitionSizeValid = True

}

PartitionNumber = 1

VolumeOffset = 1048576

MaintenanceMode = False

RedirectedAccess = False

}

]

Id = 3b115c10-95ab-4420-8e58-da1d988c7750

}

As you see, the information is not easy to find because you have to look through the nested objects and the default formatting is not nice. For example, I’m sure you want to see the size in GB not bytes!

Here is a “one line” command that gives you some information:

PS C:\> Get-ClusterSharedVolume | select -Expand SharedVolumeInfo | select -Expand Partition | ft -a

uto Name,@{ Label = "Size(GB)" ; Expression = { "{0:N2}" -f ($_.Size/1024/1024/1024) } },@{ Label =

"FreeSpace(GB)" ; Expression = { "{0:N2}" -f ($_.FreeSpace/1024/1024/1024) } },@{ Label= "UsedSpace(

GB)" ; Expression = { "{0:N2}" -f ($_.UsedSpace/1024/1024/1024) } },@{ Label = "PercentFree" ; Expre

ssion = { "{0:N2}" -f ($_.PercentFree) } }

Name Size(GB) FreeSpace(GB) UsedSpace(GB) PercentFree

---- -------- ------------- ------------- -----------

\\?\Volume{ef349066-525c-11df-8261-001e4fe757b6} 19.53 16.45 3.08 84.25

\\?\Volume{297b7d61-62d5-11df-91ff-001e4fe757b6} 0.49 0.46 0.03 93.95

\\?\Volume{297b7d68-62d5-11df-91ff-001e4fe757b6} 0.49 0.46 0.03 93.91

\\?\Volume{ef349070-525c-11df-8261-001e4fe757b6} 19.53 19.44 0.09 99.55

\\?\Volume{ef34907a-525c-11df-8261-001e4fe757b6} 19.53 15.78 3.75 80.80

\\?\Volume{ef3490a2-525c-11df-8261-001e4fe757b6} 0.97 0.93 0.04 95.91

The problem with this is that it does not give you the friendly name given the nested nature of the objects returned with Get-ClusterSharedVolume. To do a better job displaying the information, I created this script that will display the information in a better view, which is attached to this blog post. Please download the DisplayCSVInfo2.txt file and rename it as a DisplayCSVInfo.ps1 file. This is an unsupported script by Microsoft and should be used at your own risk.

PS C:\> .\DisplayCSVInfo.ps1

Name Path Size(GB) FreeSpace(GB) UsedSpace(GB) PercentFree

---- ---- -------- ------------- ------------- -----------

Cluster Disk 1 C:\ClusterStorage\Volume2 19.53 16.45 3.08 84.25

Cluster Disk 10 C:\ClusterStorage\Volume6 0.49 0.46 0.03 93.95

Cluster Disk 10 C:\ClusterStorage\Volume7 0.49 0.46 0.03 93.91

Cluster Disk 2 C:\ClusterStorage\Volume3 19.53 19.44 0.09 99.55

Cluster Disk 3 C:\ClusterStorage\Volume4 19.53 15.78 3.75 80.80

Cluster Disk 7 C:\ClusterStorage\Volume5 0.97 0.93 0.04 95.91

Comments
  • My friend, thats exactly what I was looking for. However, I'm not finding the script for download. Could you send me by email? (gserrao@outlook.com) Thanks in advance!

  • Hi there, thanks for the script. Could you help me with the download link?

  • Email address is manandoe.it@gmail.com

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