[PACKS] Pack disk format changing, updated dogfood instructions.

[Robert Collins]

On Wed, 2007-09-26 at 06:43 +1000, Robert Collins wrote:
> If you don't know about the pack repository format, please skip down to
> 'Pack repositories' in this mail. If you are already aware of it and
> dogfooding, please read the entire thing.
> 
> The pack repository format is being changed to have no cached
> annotations in the knit records used within the pack.
> 
> This saves space and time for the majority of operations, at the price
> of making 'annotate' slower, so the first release is probably not
> suitable for a default format.
> 
> I expect to make this change in revno 2784.

This actually happened in revno 2786, but it has been done.

FWIW it saves about 5M on a bzr.dev repository.

Cheers,
Rob
-- 
GPG key available at: <http://www.robertcollins.net/keys.txt>.
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