The Linux implementation of a log-structured file system

摘要: Toward enhancing the reliability of Linux file system, we are developing a new log-structured system (NILFS) for operating system. Instead overwriting existing blocks, NILFS appends consistent sets modified or newly created blocks continuously into segmented disk regions. This writing method allows to achieve faster recovery time and higher write performance. The address block that is written changes each write, which makes it difficult apply modern technologies such as B-tree structures. To permit on kernel basis, has its own mechanism handles data meta one unit them be relocated. paper presents design implementation focussing mechanism.