EXT3 seems to be a "true" journalling FS now. At one point in time
though it was kludgy. Now EXT3 is definitely a good journaling
filesystem, but it's speed, if you need it, does leave something to be
desired. It's best to use IOzone or the mongo.pl benchmarks though to
see for yourself in the environment you're going to run. YMMV per
On Wed, 2001-12-05 at 13:03, Xianglong Yuan wrote:
> I just cross-by an excellent article on various journaling
> techniques used in ext3.
> There are three modes in ext3: writeback mode, ordered mode, and
> journal mode. Most journaling FSs use writeback mode which
> allows possible file corruption as I mentioned in this thread.
> While journal mode, which provides full data and metadata
> journaling, is the safest but too expensive and unnecessary for
> me, ordered mode is exactly what I want: possible loss of updates
> only and no file corruption. It surprises me that ext3, now in
> the official 2.4 kernel, provides all these journaling
> techniques. Folks, any reason against my likely defection? :-))
> I recall someone said ext3 is not a true journaling FS. Is it?
Systems Architect, CCNA
"Be ashamed to die until you have won some victory for humanity."
Horace Mann, address at Antioch College, 1859
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