Re: what is our answer to ZFS?

From: Matthias Andree
Date: Tue Nov 22 2005 - 03:53:20 EST

On Mon, 21 Nov 2005, Kasper Sandberg wrote:

> > As mentioned, a file system cannot possibly be stable right after merge.
> > Having to change formatting is a sweeping change and certainly is a
> > barrier across which to look for auditing is all the more difficult.
> before reiser4 was changed alot, to match the codingstyle (agreed, they
> have to obey by the kernels codingstyle), it was stable, so had it been
> merged there it wouldnt have been any less stable.

Code reformatting, unless 100% automatic with a 100% proven and C99
aware formatting tool, also introduces instability.

> > Lucky you. I haven't dared try it yet for lack of a test computer to
> > trash.
> i too was reluctant, i ended up using it for the things i REALLY dont
> want to loose.

So did many when reiser 3 was fresh, it was much raved about its speed,
stability, its alleged recoverability and recovery speed, and then
people started sending full filesystem dumps on tape and other media to

It's impossible to fully test nontrivial code, every option, every
possible state exponentiates the number of possibilities you have to
test to claim 100% coverage.

Matthias Andree
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