Institut für Computersprachen
Programmiersprachen und Übersetzer
 | Diplomarbeit |
|---|---|
| Titel | dtfs A Log-Structured Filesystem for Linux |
| Autor | Czezatke, Christian |
| Erscheinungsjahr | 1998 |
| Inventardatum | 20.01.1999 |
| Abstract | This thesis discusses the design and implementation of dtfs, a log-structured filesystem for Linux. dtfs features a generic core providing logging facilities that are filesystem-independent and a "filesystem personality" that borrows heavily from the Linux ext2 filesystem. Furthermore, the dtfs design supports the placement of multiple filesystems (even of different filesystem personalities) on top of one dtfs filesystem device and the creation of snapshots and different versions for these filesystems. I have also made a first implementation of dtfs using the Linux 2.0.33 kernel and investigated the performance effects caused by a log-structured filesystem. The results show that this implementation of dtfs is already approximately on par with the 2.0.33 ext2 filesystem performance-wise. This also illustrates that traditional approaches have been closing the performance gap during the last years, especially when dealing with write and metadata update operations. However other qualitative improvements offered by the dtfs design, such as fast crash recovery or the ability to create consistent backups without restricting user access to the filesystem, cannot be added to traditional approaches easily. |
| Status | Verfügbar |