VDS_FILE_SYSTEM_FORMAT_SUPPORT_PROP structure (vds.h)

[Beginning with Windows 8 and Windows Server 2012, the Virtual Disk Service COM interface is superseded by the Windows Storage Management API.]

Provides information about file systems that are supported for formatting volumes.

Syntax

typedef struct _VDS_FILE_SYSTEM_FORMAT_SUPPORT_PROP {
  ULONG  ulFlags;
  USHORT usRevision;
  ULONG  ulDefaultUnitAllocationSize;
  ULONG  rgulAllowedUnitAllocationSizes[32];
  WCHAR  wszName[32];
} VDS_FILE_SYSTEM_FORMAT_SUPPORT_PROP, *PVDS_FILE_SYSTEM_FORMAT_SUPPORT_PROP;

Members

ulFlags

Bitwise-OR of any of the values defined in the VDS_FILE_SYSTEM_FORMAT_SUPPORT_FLAG enumeration.

usRevision

The revision of the file system, if any. This member is expressed as a 16-bit binary-coded decimal number, where a decimal point is implied between the second and third digits. For example, a value of 0x0250 indicates revision 2.50.

ulDefaultUnitAllocationSize

Default allocation unit size, in bytes, that will be used by the file system for formatting the volume. This value must be a power of 2 and must also appear in the rgulAllowedUnitAllocationSizes member.

rgulAllowedUnitAllocationSizes[32]

A zero-terminated array of allocation unit sizes, in bytes, that are supported by the file system for formatting the volume. The case where the array will not be zero-terminated is if there are MAX_FS_ALLOWED_CLUSTER_SIZES_SIZE number of elements in the array. Each of the values in the array must be a power of 2.

wszName[32]

Null-terminated Unicode string indicating the name of the file system. Possible values include the following.

Remarks

If an OEM partition is formatted as FAT or FAT32, the partition type does not change. If it is formatted with NTFS, the partition type changes to PARTITION_IFS (0x07). For information about partition types, see CREATE_PARTITION_PARAMETERS.

Requirements

See also

IVdsDiskPartitionMF2::FormatPartitionEx2

IVdsDiskPartitionMF::QueryPartitionFileSystemFormatSupport

IVdsVolumeMF2::FormatEx

IVdsVolumeMF2::QueryFileSystemFormatSupport

VDS_FILE_SYSTEM_FORMAT_SUPPORT_FLAG