Hans Reiser wrote:
> Others are correct in using the terms log-structured vs. journaling where I used
> the terms data journaling vs. metadata journaling.
>
> Also, it seems that ext3 is now data logging, I'll have to ask Stephen if it is
> ready for benchmarking against now.
Well, not quite correct.
The term "log-based" means that a log is used to transactionally perform some
filesystem operations, but doesn't specify anything about the fileystem layout and
space allocation policies.
The term "log-structured filesystem" was coined to signify that the on-disk layout
actually *IS* that of a log. It is much more specific than simply stating that
changes to file content are logged somehow.
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