Mailinglist Archive: opensuse (5130 mails)

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Re: [opensuse] Upgrade RC1 to RC3?
  • From: "Carlos E. R." <robin.listas@xxxxxxxxxxxxxx>
  • Date: Tue, 2 May 2006 01:57:13 +0200 (CEST)
  • Message-id: <Pine.LNX.4.61.0605020150290.24182@xxxxxxxxxxxxxxxx>
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The Tuesday 2006-05-02 at 00:49 +0200, Robert Schiele wrote:

> On Tue, May 02, 2006 at 12:28:07AM +0200, Carlos E. R. wrote:
> > It could be uncompressed, the differences applied, then recompressed with
> > something else - but then the checksum would be different.
>
> There are more problems than just the checksum. Using different compression
> would break the iso layout of the disc. Sure, you could have recreated this as
> well but then what would finally be the point in distributing iso images at
> all?

I mean that the checksum of the would be different, and this in turn means
that the iso would be different.

I understand that applydeltaiso decomposes the iso image in the
separated rpm archives; to each rpm it applies "applydeltarpm",
generating a new rpm; finally, it collects all those new rpm in a new
iso image, with the same boot image. The "iso" is generated anew.

However, considering that it takes 50 minutes times 5 disks = 4 hours 10
minutes to recreate the 5 CDs, it is worth considering if a lower
compression ratio, or an altogether different compression method, would be
interesting for us all. Perhaps it would mean 6 CDs, but maybe that is
acceptable :-?

- --
Cheers,
Carlos Robinson

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