linux-kernel - RE: [PATCH] Time-based RFC 4122 UUID generator

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Message-ID:  <fhvoqu$u6l$1@ger.gmane.org>
Date:	Tue, 20 Nov 2007 23:58:38 +0100
From:	Helge Deller <deller@....de>
To:	linux-kernel@...r.kernel.org
Subject:  RE: [PATCH] Time-based RFC 4122 UUID generator

David Schwartz wrote:
> Any UUID generator that can produce duplicate UUIDs with probability
> significantly less than purely random UUIDs is so badly broken that it
> should not ever be used. Anyone who finds such a UUID generator should
> immediately either fix it or throw it on the junk heap. 

That's what my patch is about: Solve the problem at it's root.

> Anyone who 
> knowingly uses such a UUID generator should be publically shamed.

The problem is that on Linux there is currently no time-based UUID generator
which really solves the problem.
Good (bad?) thing is: Other UNIXes aren't better either.

> Rather than (or at the very least, in addition to) adding a new UUID
> generator, let's fix the one(s) we have.

Some things aren't fixable with userspace only. At least _some_ kind of help
is needed from the kernel.
Why not providing one single working version directly from the kernel and
dropping others you can't cleanly fix anyway ?

Helge

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