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Re: [RFC] issue 2286 - space saving in the repository

From: Peter N. Lundblad <peter_at_famlundblad.se>
Date: 2006-05-20 17:57:38 CEST

Malcolm Rowe writes:
> On Sat, May 20, 2006 at 05:25:52PM +0200, Peter N. Lundblad wrote:
> > > also because the FSFS backend at least seems to use the representation
> > > key as a way to determine whether two nodes are 'the same' - and it's
> > > not immediately clear whether the kind of sameness is one that should
> > > also be true for hard-linked nodes.
> > >
> > If that's the case, we could introduce a proxy representation to be
> > able to detect the difference, couldn't we?
> >
>
> Yes, and that's what Philip's proposal does, in effect. I'm not sure
> whether we actually _need_ it though, and as Max points out, UNIX
> hard-links don't have a 'master' copy.

I think the comparison with Unix hard links is unfortunate, since this is
an internal implementation thing on the representation level rather than
node revision level. For example, file contents and props will be handled separately. I'm sure you know that, just pointing it out for people not so familiar with the FS internals.

Regards,
//Peter

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Received on Sat May 20 17:58:21 2006

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