Re: expensive local git clone

From: David S. Miller <davem@davemloft.net>
Date: Jul 4, 2005, 21:00 UTC
Message-ID: <20050704.140043.112609056.davem@davemloft.net>
In-Reply-To: <20050704204235.GE21128@pasky.ji.cz>

From: Petr Baudis <pasky@suse.cz>
Date: Mon, 4 Jul 2005 22:42:35 +0200

Show 15 quoted lines

> Dear diary, on Mon, Jul 04, 2005 at 10:39:09PM CEST, I got a letter
> where Linus Torvalds <torvalds@osdl.org> told me that...
> > That said, the pack-file thing I'm working on won't be perfect either, and
> > the main advantage is that it should work over ssh. The fastest way to do
> > a clone is really to do a recursive hardlinked tree, so you may well want
> > to just do
> > 
> > 	#!/bin/sh
> > 	mkdir "$2" && cp -rl "$1/.git" "$2/.git"
> > 
> > and it should be about a million times faster and equally effective.
> > 
> > Untested, of course.
> 
> I wouldn't do that on anything but .git/objects. ;-)

Agreed. When I do it by hand (but I shouldn't have to do this by hand, git-clone-script should do it this way if that's the best and most efficient) I usually link the object directory then copy the rest of the stuff non-linked.

I keep hoping git-clone-script is going to be a good way to clone two local trees. Is my hope misguided? :-)