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SubjectRe: ReiserFS data corruption in very simple configuration

On Mon, Oct 01, 2001 at 07:27:31PM +0400, Hans Reiser wrote:
> This is the meaning of metadata journaling: that writes in progress at the time
> of the crash may write garbage, but you won't need to fsck. You can get this
> behaviour with other filesystems like FFS also. If you cannot accept those
> terms of service, you might use ext3 with data journaling on, but then your
> performance will be far worse.

ext3 with ordered data writes has performance nearly up to the level
of the fast-and-loose writeback mode for most workloads, and still
avoids ever exposing stale disk blocks after a crash.

Sure, it's a tradeoff, but there are positions between the two
extremes (totally unordered data writes, and totally journaled data
writes) which offer a good compromise here.

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