From: Sam Vilain <sam@vilain.net>
Date: Wed, 15 Feb 2006 00:40:24 GMT
Subject: Re: Handling large files with GIT
Message-ID: <43F27878.50701@vilain.net>
In-Reply-To: <7vy80dpo9g.fsf@assigned-by-dhcp.cox.net>

Junio C Hamano wrote:
> Linus Torvalds <torvalds@osdl.org> writes:
> 
>>If somebody is interested in making the "lots of filename changes" case go 
>>fast, I'd be more than happy to walk them through what they'd need to 
>>change. I'm just not horribly motivated to do it myself. Hint, hint.
> 
> In case anybody is wondering, I share the same feeling.  I
> cannot say I'd be "more than happy to" clean up potential
> breakages during the development of such changes, but if the
> change eventually would help certain use cases, I can be
> persuaded to help debugging such a mess ;-).

Excellent.  Any speculations on where they might fit?  Clearly, it needs
to be out of the "tree".

Dealing with the three cases I mentioned before in my Warnocked post;

   1. caching - I'll consider this an "under the hood" thing, it really
                doesn't matter, so long as the tools all know.

   2. forensic - extra stuff at the end of the commit object?

      eg
         Copied: /new/path from /old/path:commit:c0bb171d..
           (for SVN case where history matters)
         Copied: /new/path from blob:b10b1d..
           (for general pre-caching case)
         Merged: /new/path from /old/path:commit:C0bb171d..
           (for an SVK clone, so we know that subsequent merges on
            /new/path need only merge from /old/path starting at commit
            C0bb171d..)

   3. retrospective - as above, but allow to specify old versions.

      eg
         Copied: /new/path:C0bb171d1 from /old/path:commit:c0bb171d2...
           (for SVN case where history matters)

Martin, is that enough for your CVS case?

Sam.