On Mon, Jun 05, 2000 at 10:40:05AM -0700, Chris Mason wrote:
> > > Yes, ext3's jfs and reiserfs have the same fundamental
> ideas.
> > > block based write ahead logging. With slight modifications to the jfs,
> > > wandering logs could even fit in.
> >
> > What are wandering logs, if I might ask?
> >
>
> This is an idea from Hans. Instead of having a dedicated logging area on
> the disk, any block can be a log block. Unlike ext2, reiserfs metadata
> can be anywhere on the disk. Placement of these tree nodes is critical to
> performance, and the wandering logs idea allows you to log the block by
> simply writing it to a new (better) location. So, the metadata is
> effectively defragmented on the fly.
And how do you find the log spread out over disk ?
Are you reinventing shadow paging ?
-Andi
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