[MS-VDS]: Virtual Disk Service (VDS) Protocol Specification

When the server receives this message, it MUST validate the following parameter:•Verify that ppEnum is not NULL.The server MUST point ppEnum to an IEnumVdsObject interface that contains the enumeration ofvolume plex objects in the list of cached storage management objects that have their volumepointer set to this volume object, as specified in section 3.4.1.3. The server MUST then return anHRESULT indicating failure or success.3.4.5.2.30.4 IVdsVolume::Extend (Opnum 6)The Extend method expands the size of the current volume by adding disk extents to each memberof each plex.HRESULT Extend([in, unique, size_is(lNumberOfDisks)]VDS_INPUT_DISK* pInputDiskArray,[in] long lNumberOfDisks,[out] IVdsAsync** ppAsync);pInputDiskArray: A pointer to an array of VDS_INPUT_DISK structures that describe the diskextents to add to the volume--one structure for each disk. Callers SHOULD specify themember index for all the disk extents together with the Extend method, unless the volumehas only one plex with only one member.lNumberOfDisks: The number of elements in pInputDiskArrray.ppAsync: A pointer to an IVdsAsync interface that, if the operation is successfully completed,receives the IVdsAsync interface to monitor and control this operation. Callers MUST releasethe interface when they are done with it.Return Values: The method MUST return zero or a non-error HRESULT (as specified in [MS-ERREF]) to indicate success, or return an implementation-specific nonzero error code toindicate failure. For the HRESULT values predefined by the Virtual Disk Service RemoteProtocol, see section 2.2.3.When the server receives this message, it MUST validate the following parameters:•Verify that pInputDiskArray is not NULL.•Verify that ppAsync is not NULL.The server MUST perform the following:•If the volume's file system does not support extend operations, then this method MUST returnVDS_E_CANNOT_EXTEND. For example, on operating systems where both volumes are formattedwith the NTFS file system, volumes that have no file system formatting will return this error.•For each VDS_INPUT_DISK structure in the pInputDiskArray parameter, verify that the value ofthe ullSize field does not exceed the amount of free space on the given disk. If the volume isbeing created within a dynamic disk pack and if this requirement is not met, then the serverMUST return VDS_E_EXTENT_EXCEEDS_DISK_FREE_SPACE. If the volume is being createdwithin a basic disk pack and if this requirement is not met, then the server MUST returnVDS_E_NOT_ENOUGH_SPACE.[MS-VDS] — v20110610Virtual Disk Service (VDS) Protocol SpecificationCopyright © 2011 Microsoft Corporation.Release: Friday, June 10, 2011237 / 360