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

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Message-ID: <20071119225849.4cbb7e37@the-village.bc.nu>
Date:	Mon, 19 Nov 2007 22:58:49 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	davids@...master.com
Cc:	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Time-based RFC 4122 UUID generator

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

That depends what they are using it for. Deliberately colliding with
other UUIDs is sometimes highly desirable, just not usually in productive
circles.
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