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Tham khảo tài liệu 'windows server 2008 inside out- p12', công nghệ thông tin, quản trị mạng phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Advanced NTFS Features 517 If you are trying to determine whether a file is used by FRS or the DLT Client service you could use the FSUtil ObjectID command to see if the file has an object identifier field set. Type fsutil objectid query FilePath at the command prompt where FilePath is the path to the file or folder you want to examine. If the file has an object identifier field set it is displayed. If a file doesn t have an object identifier field set an error message is displayed stating The specified file has no object ID. Reparse Points On NTFS volumes a file or folder can contain a reparse point. Reparse points are file system objects with special attribute tags that are used to extend the functionality in the I O subsystem. When a program sets a reparse point it stores an attribute tag as well as a data segment. The attribute tag identifies the purpose of the reparse point and details how the reparse point is to be used. The data segment provides any additional data needed during reparsing. Reparse points are used for directory junction points and volume mount points. Directory junctions enable you to create a single local namespace using local folders local volumes and network shares. Mount points enable you to mount a local volume to an empty NTFS folder. Both directory junction points and volume mount points use reparse points to mark NTFS folders with surrogate names. When a file or folder containing a reparse point used for a directory junction point or a volume mount point is read the reparse point causes the pathname to be reparsed and a surrogate name to be substituted for the original name. For example if you were to create a mount point with the file path C Data that is used to mount a hard disk drive the reparse point is triggered whenever the file system opens C Data and points the file system to the volume you ve mounted in that folder. The actual attribute tag and data for the reparse point would look similar to the following Reparse Tag Value .
