IVdsLunControllerPorts::QueryActiveControllerPorts 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[Beginning with Windows 8 and Windows Server 2012, the Virtual Disk Service COM interface is superseded by the Windows Storage Management API.]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 an enumeration of currently active controller ports— the controller ports through which the LUN can be accessed. This method replaces IVdsLun::QueryActiveControllers.
Syntax
HRESULT QueryActiveControllerPorts(
[out] IEnumVdsObject **ppEnum
);
Parameters
[out] ppEnum
The address of an IEnumVdsObject interface pointer that can be used to enumerate the controller ports as controller port objects. For more information, see Working with Enumeration Objects. Callers must release the interface and each of the controller port objects when they are no longer needed by calling the IUnknown::Release method.
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 |
|---|---|
|
The enumeration of controller ports was successfully returned. If the LUN has no active controller ports, the enumeration is empty. |
|
The cache of the provider is corrupted. This indicates a software or communication problem inside a provider that caches information about the attached devices. The caller can 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 previous operations are complete. |
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows Vista [desktop apps only] |
| Minimum supported server | Windows Server 2003 R2 [desktop apps only] |
| Target Platform | Windows |
| Header | vds.h |
| Redistributable | VDS 1.1 |