IVdsSubSystem::QueryMaxLunCreateSize method (vdshwprv.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[Beginning with Windows 8 and Windows Server 2012, the Virtual Disk Service COM interface is superseded by the Windows Storage Management API.]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 size of the maximum LUN that can be created using the specified LUN type and hints.
Syntax
HRESULT QueryMaxLunCreateSize(
[in] VDS_LUN_TYPE type,
[in] VDS_OBJECT_ID *pDriveIdArray,
[in] LONG lNumberOfDrives,
[in] VDS_HINTS *pHints,
[out] ULONGLONG *pullMaxLunSize
);
Parameters
[in] type
The LUN type enumerated by VDS_LUN_TYPE.
[in] pDriveIdArray
A pointer to an array containing a VDS_OBJECT_ID for each of the drives to be used in the LUN creation. The provider should attempt to use the drives in the order provided. This parameter can be NULL if the lNumberOfDrives parameter is 0, in which case the provider should automatically pick drives.
[in] lNumberOfDrives
The number of entries in pDriveIdArray. This can be set to 0.
[in] pHints
A pointer to the VDS_HINTS structure used for creating the LUN. The hints always take lower priority than parameters listed before. This argument must be non-NULL.
[out] pullMaxLunSize
A pointer to a buffer containing the maximum size of the LUN in bytes. 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 |
|---|---|
|
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. |
|
The subsystem object is no longer present. |
|
The subsystem is in a failed state and is unable to perform the requested operation. |
|
Another operation is in progress; this operation cannot proceed until the previous operation or operations are complete. |
|
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. |
|
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 | vdshwprv.h |
| Library | Uuid.lib |