The SetFileSystemFlags method sets the file system flags.

 HRESULT SetFileSystemFlags(
   [in] unsigned long ulFlags
 );

ulFlags: Callers MUST set the VDS_FPF_COMPRESSED flag.

Return Values: The method MUST return zero or a non-error HRESULT (as specified in [MS-ERREF]) to indicate success, or return an implementation-specific nonzero error code to indicate failure. For the HRESULT values predefined by the Virtual Disk Service Remote Protocol, see section 2.2.3.

When the server receives this message, it MUST validate the following:

• Verify that ulFlags does not contain any flags other than VDS_FPF_COMPRESSED.

The server MUST set the file system flags specified by ulFlags and return an HRESULT indicating failure or success.