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[Beginning with Windows 8 and Windows Server 2012, the Virtual Disk Service COM interface is superseded by the Windows Storage Management API.]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 |
|---|---|
|
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 LUN object is no longer present. |
|
The LUN 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 | vds.h |
| Library | Uuid.lib |