Re: Is ReiserFS really a journaling file system, or is it really just a synchronous-metadata file system like BSD FFS?

From: Christoph Hellwig (chhellwig@gmx.net)
Date: Wed Mar 29 2000 - 10:38:55 EST


On Tue, Mar 28, 2000 at 09:53:58AM -0800, Scott Henry wrote:
> >>>>> "n" == ncm <ncm@nospam.cantrip.org> writes:
> You are thinking of the other type, a log-based filesystem, where
> metadata and user data are logged. It is much more difficult to
> write a log-based filesystem that doesn't suffer from the
> performance issues.

Didn't you meant 'log-structured filesystem' ?
A very cool one for linux is LinLogFS, which has a small 'kernel'
and can use different minor modified filesystems as personalities
(actually only ext2 is supported).
But it is actually only for 2.2 and modifies buffer.c like 2.2 reiserfs ...)

You can find it at:
http://www.complang.tuwien.ac.at/czezatke/lfs.html

Christoph

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