Extent - based addressing structures rooted in the inode are used for mapping file data to disk 根植于inode基于盤區(qū)的尋址結(jié)構(gòu)用來將文件數(shù)據(jù)映射到磁盤。
The addressing structure is a b tree populated with extent descriptors the triples above , rooted in the inode and keyed by logical offset within the file 尋址結(jié)構(gòu)是一棵b +樹,該樹由盤區(qū)描述符(上面提到的三元組)填充,根在inode中,鍵為文件中的邏輯偏移量。