3.2.4.4.3.33 IVolumeClient3::DeletePartitionsForVolume (Opnum 36)

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The DeletePartitionsForVolume method deletes the partitions underneath a dynamic disk volume. This is a synchronous task.

 HRESULT DeletePartitionsForVolume(
   [in] LdmObjectId volumeId,
   [in] hyper volumeLastKnownState,
   [out] TASK_INFO* tinfo
 );

volumeId: Specifies the OID of the volume under which to delete partitions.

volumeLastKnownState: Last known modification sequence number of the volume.

tinfo: Pointer to a TASK_INFO structure that the client can use to track the request's progress.

Return Values: The method MUST return 0 or a nonerror HRESULT on success, or an implementation-specific nonzero error code on failure (as specified in [MS-ERREF]; see also section 2.2.1 for HRESULT values predefined by the Disk Management Remote Protocol).

Upon receiving this message, the server MUST validate parameters:

  1. Verify that the dynamic volume specified by volumeId is in the list of storage objects, and check whether the field volumeSpec.lastKnownState matches the field LastKnownState of the object.

  2. Verify that tinfo is not NULL.

If parameter validation fails, the server MUST fail the operation immediately, returning an appropriate error as its response to the client.

Otherwise, the server MUST process the message as follows:

  1. Enumerate all disk regions that correspond to the dynamic volume specified by volumeId from the list of storage objects.

  2. For each disk region, delete the entry in the partition table of its disk that has the same offset and length as the disk region.

  3. Wait for the partition deletions to succeed or fail.

  4. Fill in the tinfo output parameter.

    TASK_INFO member

    Required for this operation

    TASK_INFO::id

    Required.

    TASK_INFO::storageId

    Not required.

    TASK_INFO::createTime

    Not required.<207>

    TASK_INFO::clientID

    Not required.<208>

    TASK_INFO::percentComplete

    Required for any task that returns REQ_IN_PROGRESS.

    TASK_INFO::status

    Required.

    TASK_INFO::type

    Required if PercentageComplete is being used.

    TASK_INFO::error

    Required.

    TASK_INFO::tflag

    Not required.<209>

  5. Return a response to the client containing volumeId and the status of the operation.

  6. Send the task completion notification.<210>

If the operation is successful, the server MUST make the following changes to the list of storage objects before returning the response:

  • Modify the dynamic volume object to account for the change of status.

  • Modify the disk objects where the partitions were deleted to account for the change in region allocation.