Re: [PATCH] Prevent megablobs from gunking up git packs

From: Junio C Hamano <junkio@cox.net>
Date: May 23, 2007, 00:28 UTC
Message-ID: <7v3b1o758u.fsf@assigned-by-dhcp.cox.net>
In-Reply-To: <200705230144.38290.jnareb@gmail.com>

Jakub Narebski <jnareb@gmail.com> writes:

> No, I was thinking about separate _kept_ pack (so it would be not 
> repacked unless -f option is given) containing _only_ the large blobs.
> The only difference between this and your proposal is that megablobs
> would be in their mergablobs pack, but not loose.

I am not sure about the "unless -f option is given" part, but a single .kept pack that contains only problematic blobs would be an interesting experiment.

 (0) prepare object names of problematic blobs, in huge.txt, one
     object name per line;

 (1) prepare a single pack that has them:

     $ N=$(git-pack-object --depth=0 --window=0 pack <huge.txt)
     $ echo 'Huge blobs -- do not repack' >pack-$N.keep
     $ mv pack-$N.* .git/object/pack/.

 (2) repack the remainder, with the default depth/window:

     $ git repack -a -d
     $ git prune