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GetVirtualDiskChanges method of the Msvm_ImageManagementService class

  • Article

Retrieves a list of changes in the specified region of a virtual disk since the provided Resilient Change Tracking Id or VHDSet Snapshot Id.

Syntax

uint32 GetVirtualDiskChanges(
  [in]  string              Path,
  [in]  string              LimitId,
  [in]  string              TargetSnapshotId,
  [in]  uint64              ByteOffset,
  [in]  uint64              ByteLength,
  [out] uint64              ProcessedByteLength,
  [out] uint64              ChangedByteOffsets[],
  [out] uint64              ChangedByteLengths[],
  [out] CIM_ConcreteJob REF Job
);

Parameters

Path [in]

A fully-qualified path that specifies the location of the Virtual Hard Disk file.

LimitId [in]

A Resilient Change Tracking Id or VHD Set Snapshot Id indicating the baseline for changes in the virtual disk.

TargetSnapshotId [in]

A VHDSet Snapshot Id indicating the snapshot to compare to the baseline when determing changes in the virtual hard disk. This parameter is only valid for VHD Set files.

ByteOffset [in]

The byte offset of the region in the virtual disk to query changes for.

ByteLength [in]

The byte length of the region in the virtual disk to query changes for. This must be less than the size of the Virtual Disk.

ProcessedByteLength [out]

The total byte length that was processed. This may be equal to ByteLength or less.

ChangedByteOffsets [out]

The list of byte offsets into the virtual disk indicating the beginning of each changed range.

ChangedByteLengths [out]

The list of byte lengths of the changed ranges in the virtual disk.

Job [out]

A reference to the job (can be null if the task is completed).

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)

Requirements

Requirement Value
Minimum supported client
 Windows 10 [desktop apps only]
Minimum supported server
 Windows Server 2016
Namespace
 Root\virtualization\v2
MOF
WindowsVirtualization.V2.mof
DLL
Vmms.exe

See also

Msvm_ImageManagementService