IVdsLun::QueryMaxLunExtendSize method (vds.h)

[Beginning with Windows 8 and Windows Server 2012, the Virtual Disk Service COM interface is superseded by the Windows Storage Management API.]

Returns the maximum size by which a LUN can be extended.

Syntax

HRESULT QueryMaxLunExtendSize(
  [in]  VDS_OBJECT_ID *pDriveIdArray,
  [in]  LONG          lNumberOfDrives,
  [out] ULONGLONG     *pullMaxBytesToBeAdded
);

Parameters

[in] pDriveIdArray

A pointer to an array containing the GUIDs of the drives used for growing the LUN. This argument can be NULL if lNumberOfDrives is 0. In this case, the provider is expected to select all the drives possible to get the maximum size.

[in] lNumberOfDrives

The count of drives in pDriveIdArray.

[out] pullMaxBytesToBeAdded

A pointer to a buffer containing the maximum bytes by which the LUN can be extended. This argument must be non-NULL.

Return value

This method can return standard HRESULT values, such as E_INVALIDARG or E_OUTOFMEMORY, and VDS-specific return values. It can also return converted system error codes using the HRESULT_FROM_WIN32 macro. Errors can originate from VDS itself or from the underlying VDS provider that is being used. Possible return values include the following.

Return code/value Description
VDS_E_PROVIDER_CACHE_CORRUPT
0x8004241FL
This return value signals a software or communication problem inside a provider that caches information about the array. Use the IVdsHwProvider::Reenumerate method followed by the IVdsHwProvider::Refresh method to restore the cache.
VDS_E_OBJECT_DELETED
0x8004240BL
The LUN object is no longer present.
VDS_E_OBJECT_STATUS_FAILED
0x80042431L
The LUN is in a failed state and is unable to perform the requested operation.
VDS_E_ANOTHER_CALL_IN_PROGRESS
0x80042404L
Another operation is in progress; this operation cannot proceed until the previous operation or operations are complete.
VDS_E_OBJECT_NOT_FOUND
0x80042405L
Can be returned from any method that takes a VDS_OBJECT_ID constant. This return value indicates that the identifier does not refer to an existing object.
VDS_E_NOT_SUPPORTED
0x80042400L
This operation or combination of parameters is not supported by this provider.

Requirements

Requirement Value
Minimum supported client Windows Vista [desktop apps only]
Minimum supported server Windows Server 2003 [desktop apps only]
Target Platform Windows
Header vds.h
Library Uuid.lib

See also

IVdsHwProvider::Reenumerate

IVdsHwProvider::Refresh

IVdsLun

IVdsLun::Extend