In particular, if a bunch of new data is being appended to a single file, XFS can allocate a single, contiguous region on disk to store this data.
尤其是，如果要将一批新数据添加到单一文件，XFS可以在磁盘上分配一个单一、相邻区域来储存这些数据。
2
Journaling is the process of logging changes to the file system through a journal (which is a dedicated circular log on a contiguous region of the disk).