CLUSCTL_RESOURCE_STORAGE_GET_DISK_INFO control code
Retrieves information about a particular storage class resource. Applications use this control code as a parameter to the ClusterResourceControl function, and resource DLLs receive the control code as a parameter to the ResourceControl callback function.
ClusterResourceControl( hResource, // resource handle
hHostNode, // optional host node
CLUSCTL_RESOURCE_STORAGE_GET_DISK_INFO, // this control code
NULL, // not used
0, // not used
lpOutBuffer, // output buffer: value list
cbOutBufferSize, // allocated buffer size (bytes)
lpcbBytesReturned ); // size of output data (bytes)
Parameters
The following control code function and DLL support parameters are specific to this control code. For complete parameter descriptions, see ClusterResourceControl or ResourceControl.
-
lpOutBuffer
-
On a successful return, points to a value list describing the storage class resource. For information on the format of this list see Value Lists for Storage Class Resources..
Return value
ClusterResourceControl returns one of the following values:
-
ERROR_SUCCESS
-
0
The operation was successful. The lpcbBytesReturned parameter points to the actual size of the returned data.
-
ERROR_MORE_DATA
-
234 (0xEA)
The output buffer pointed to by lpOutBuffer was not large enough to hold the data resulting from the operation. The lpcbBytesReturned parameter points to the size required for the output buffer.
-
The operation failed. The value of lpcbBytesReturned is unreliable.
Implementations of ResourceControl can return the above values or the following value:
-
ERROR_INVALID_FUNCTION
-
1
Requests that the Resource Monitor perform default processing (if any) for the control code addition to processing supplied by the DLL (if any).
Remarks
Do not use the CLUSCTL_RESOURCE_STORAGE_GET_DISK_INFO control code in any resource DLL entry point function. This control code can safely be called from a worker thread. For more information, see Function Calls to Avoid in Resource DLLs.
ClusAPI.h defines the 32 bits of CLUSCTL_RESOURCE_STORAGE_GET_DISK_INFO (0x01000191) as follows.
| Component | Bit location | Value |
|---|---|---|
| Object code |
24 31 |
CLUS_OBJECT_RESOURCE (0x1) |
| Global bit |
23 |
CLUS_NOT_GLOBAL (0x0) |
| Modify bit |
22 |
CLUS_NO_MODIFY (0x0) |
| User bit |
21 |
CLCTL_CLUSTER_BASE (0x0) |
| Type bit |
20 |
External (0x0) |
| Operation code |
0 23 |
CLCTL_STORAGE_GET_DISK_INFO (0x191) |
| Access code |
0 1 |
CLUS_ACCESS_READ (0x1) |
For more information, see Control Code Architecture
Resource DLL Support
Conditional. You must support the CLUSCTL_RESOURCE_STORAGE_GET_DISK_INFO control code if your resource DLL handles storage class resources such as quorum-capable resources. Return a value list that fully describes the storage class resource. For information on working with value lists, see Using Value Lists.
The Resource Monitor does not provide default handling.
For more information on the ResourceControl entry point function, see Implementing ResourceControl.
Requirements
| Minimum supported client |
None supported |
| Minimum supported server |
Windows Server 2008 Enterprise, Windows Server 2008 Datacenter |
| Header |
|