GetVirtualHardDiskState method of the Msvm_ImageManagementService class

Retrieves state information for a virtual hard disk file.

Syntax

uint32 GetVirtualHardDiskState(
  [in]  string              Path,
  [out] string              State,
  [out] CIM_ConcreteJob REF Job
);

Parameters

Path [in]

The fully qualified path of the disk image file.

State [out]

If successful, receives an embedded instance of the Msvm_VirtualHardDiskState class that contains the state information for the virtual hard disk.

Job [out]

If the operation is performed asynchronously, this method will return 4096, and this parameter will contain a reference to an object derived from CIM_ConcreteJob.

Return value

This method returns one of the following values.

Completed with No Error (0)

Method Parameters Checked - Job Started (4096)

Failed (32768)

Access Denied (32769)

Not Supported (32770)

Status is unknown (32771)

Timeout (32772)

Invalid parameter (32773)

System is in use (32774)

Invalid state for this operation (32775)

Incorrect data type (32776)

System is not available (32777)

Out of memory (32778)

File not found (32779)

Remarks

Access to the Msvm_ImageManagementService class might be restricted by UAC Filtering. For more information, see User Account Control and WMI.

Examples

The following C# example shows how to call the GetVirtualHardDiskState method. The referenced utilities can be found in Common utilities for the virtualization samples (V2).

public static void GetVirtualHardDiskState(string vhdPath)
{
    ManagementScope scope = new ManagementScope(@"root\virtualization\V2", null);
    ManagementObject imageService = Utility.GetServiceObject(scope, "Msvm_ImageManagementService");
    ManagementBaseObject inParams = imageService.GetMethodParameters("GetVirtualHardDiskState");

    inParams["Path"] = vhdPath;
    
    ManagementBaseObject outParams = imageService.InvokeMethod("GetVirtualHardDiskState", inParams, null);
    if ((UInt32)outParams["ReturnValue"] == ReturnCode.Started)
    {
        if (Utility.JobCompleted(outParams, scope))
        {
            Console.WriteLine("GetVirtualHardDiskState was successful.");
        }
        else
        {
            Console.WriteLine("GetVirtualHardDiskState was not successful.");
        }
    }
    else if ((UInt32)outParams["ReturnValue"] == ReturnCode.Completed)
    {
        string diskStateString = outParams["State"].ToString();
        Utility.PrintEmbeddedInstance(diskStateString);
    }

    outParams.Dispose();
    inParams.Dispose();
    imageService.Dispose();
}

Requirements

See also

Msvm_ImageManagementService