Log-structured file system: Difference between revisions

Revision as of 23:28, 16 March 2009

Revision as of 10:09, 20 March 2009

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* [[LinLogFS]] (formerly dtfs) and LFS ([http://logfs.sourceforge.net/ http://logfs.sourceforge.net/]) are log-structured file system implementations for Linux. The latter was part of [[Google Summer of Code|Google Summer of Code 2005]]. Both projects have been abandoned.

* [http://aiya.ms.mff.cuni.cz/lfs LFS] is another log-structured file system for Linux developed by Charles University, Prague. It was to include support for snapshots and indexed directories, but development has since ceased.

* [http://logfs.org/logfs/ [LogFS]] is a scalable flash filesystem for [[Linux]], intended to replace [[JFFS2]]. Early in development.

Some kinds of storage media, such as [[flash memory]] and [[CD-RW]], slowly degrade as they are written to and have a limited number of erase/write cycles at any one ___location. Log-structured file systems are sometimes used on these media because they make fewer in-place writes and thus prolong the life of the device by [[wear levelling]]. The more common such file systems include: