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On Thursday 14 June 2001 15:58, Stephen C. Tweedie
babbled:> ext3 can do both metadata-only and full data journaling. You can
> enable data journaling for the entire filesystem or on a per-file
> basis (ext3 uses that functionality internally to journal writes to
> the quota files to keep them consistent, for example.)
I learn something new yet again. How would one go about setting the
journaling mode. On my system, it's currently 'ordered data' mode.
>
> > However, it is
> > more than sufficient more home use, and most servers (except file/app
> > servers).
>
> I'm not quite sure what you think would make ext3 unsuitable for
> fileservers!
that's bad grammer on my part. It is definately NOT unsuitable for
fileservers. What I had intended to get across was that the b-tree algorithm
in reiserfs might be *better* suited to a very active, heavy I/O fileserver.
ext3 is certainly usable in that situation, I just wanted to convey that
reiser might be better. my bad.
> reiserfs only journals metadata at the moment.
again, something new. I was under the impression that is was presently
capable of data-journalling. again, my bad.
>
> > reiserfs has a lot of different performance features due to its
> > b-tree heritage.
>
> Yep. It's also worth noting that there are a number of advanced
> performance features available as patches to ext2, including indexed
> directories for very fast operation on huge directories, and
> tail-packing for high efficiency on small files. There are also ACL
> patches available for ext2, and all of these are hoped to be merged
> into ext3 officially at some point. We also have prototypes working
> for additional ext3-specific functionality such as using a separate
> disk for the journal.
I tried to allude to this fact by stating that the new ext2 features (like
Daniel's (right?) indexed directories which I eagerly await official
inclusion) would be 100% plugin-able. Perhaps I should have been more clear.
> Cheers,
> Stephen
thanks for jumping in so quickly Stephen! And keep up the excellent hacking
on the code and the hand-holding help on the ext3 list!
- --
Douglas J. Hunley (Linux User #174778)
http://hunley.homeip.net/ http://linux.nf/
printk("VFS: Busy inodes after unmount. "
"Self-destruct in 5 seconds. Have a nice day...\n");
2.3.99-pre8 /usr/src/linux/fs/super.c
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