Logfs: Difference between revisions

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Logfs is a new flash-based file system currently under development. The main author
FIELD_MESSAGE_c4tracs
is Jörn Engel.

There are early design documents at http://wh.fh-wedel.de/~joern/logfs.pdf.

Later additions not covered in that document include:

* Block compression,
* [[JFFS2]]-style subblock writes in the journal,
* Advanced block allocation methods to separate write-once data from write-often data.
* Block caching (useful for metadata)
* Delta storage - having an on-flash cache of recent changes without updating the wandering tree yet.
* Garbage collection algorithm - explained by the author in a [http://mirror.linux.org.au/pub/linux.conf.au/2007/video/talks/91.ogg video] at [http://mirror.linux.org.au/pub/linux.conf.au/2007/video/talks/91.pdf Linux Conference Australia in 2007]

The Logfs wiki is located at http://www.logfs.org/logfs/.

[[Category:OS]]
[[Category:Developers]]
[[Category:Software development]]

Revision as of 07:01, 17 December 2008

Logfs is a new flash-based file system currently under development. The main author is Jörn Engel.

There are early design documents at http://wh.fh-wedel.de/~joern/logfs.pdf.

Later additions not covered in that document include:

  • Block compression,
  • JFFS2-style subblock writes in the journal,
  • Advanced block allocation methods to separate write-once data from write-often data.
  • Block caching (useful for metadata)
  • Delta storage - having an on-flash cache of recent changes without updating the wandering tree yet.
  • Garbage collection algorithm - explained by the author in a video at Linux Conference Australia in 2007

The Logfs wiki is located at http://www.logfs.org/logfs/.