CLUS_PARTITION_INFO_EX structure (clusapi.h)

Describes a storage class resource volume and file system. It is used as the data member of a CLUSPROP_PARTITION_INFO structure and as the return value of some control code operations.

Syntax

typedef struct CLUS_PARTITION_INFO_EX {
  DWORD          dwFlags;
  WCHAR          szDeviceName[MAX_PATH];
  WCHAR          szVolumeLabel[MAX_PATH];
  DWORD          dwSerialNumber;
  DWORD          rgdwMaximumComponentLength;
  DWORD          dwFileSystemFlags;
  WCHAR          szFileSystem[32];
  ULARGE_INTEGER TotalSizeInBytes;
  ULARGE_INTEGER FreeSizeInBytes;
  DWORD          DeviceNumber;
  DWORD          PartitionNumber;
  GUID           VolumeGuid;
} CLUS_PARTITION_INFO_EX, *PCLUS_PARTITION_INFO_EX;

Members

dwFlags

Flags that describes the storage class resource, enumerated by the CLUSPROP_PIFLAGS enumeration.

CLUSPROP_PIFLAG_STICKY (1)

The drive letter is sticky.

CLUSPROP_PIFLAG_REMOVABLE (2)

The storage class resource is removable.

CLUSPROP_PIFLAG_USABLE (4)

The storage class resource is formatted with a file system that is usable by the Cluster service.

CLUSPROP_PIFLAG_DEFAULT_QUORUM (8)

The partition should be used to store quorum files if no partition is specified in the SetClusterQuorumResource function. For Physical Disk resources, the smallest NTFS partition larger than 50MB automatically receives this flag.

szDeviceName[MAX_PATH]

Device name for the storage class resource, such as "C:". No backslashes are included.

szVolumeLabel[MAX_PATH]

Volume label for the storage class resource.

dwSerialNumber

Serial number of the storage class resource volume.

rgdwMaximumComponentLength

Maximum length, in characters, of a file name component supported by the specified file system. A file name component is that portion of a file name between backslashes.

dwFileSystemFlags

Flags that describes the file system. One or more of the following flags are valid.

FS_CASE_SENSITIVE (1)

The file system supports case-sensitive file names.

FS_CASE_IS_PRESERVED (2)

The file system preserves the case of file names when it places a name on the storage class resource.

FS_UNICODE_STORED_ON_DISK (4)

The file system supports Unicode in file names as they appear on storage class resource.

FS_PERSISTENT_ACLS (8)

The file system preserves and enforces access control lists (ACLs).

szFileSystem[32]

Name of the file system, such as "FAT" or "NTFS".

TotalSizeInBytes

Specifies the total size, in bytes, of the volume. This value may not be properly aligned and should be accessed using UNALIGNED pointers.

FreeSizeInBytes

Specifies the size, in bytes, of the unallocated space on the volume. This value may not be properly aligned and should be accessed using UNALIGNED pointers.

DeviceNumber

The device number

PartitionNumber

The partition number.

VolumeGuid

The globally unique identifier associated with the volume.

Requirements

See also

Data Structures