Re: [RFC PATCH] cogito --- don't overwrite metadata files in place (breaks CoW use)

From: Chris Wedgwood <cw@f00f.org>
Date: Jul 13, 2005, 21:11 UTC
Message-ID: <20050713211106.GA12047@taniwha.stupidest.org>
In-Reply-To: <Pine.LNX.4.58.0507131402210.17536@g5.osdl.org>

On Wed, Jul 13, 2005 at 02:05:35PM -0700, Linus Torvalds wrote:

> >   and .git/refs/head/master is hardlinked between both trees.
>
> AND THAT IS WRONG.

OK, I was more-or-less assuming that 'cp -Rl tree1 tree2' was always a valid thing to do.

Clearly if it's not then all of this is somewhat moot.

> You shouldn't hardlink whole trees. Git will not guarantee that it
> breaks the links.

I can live with that, until now though I wasn't aware that hardlinked trees were a bad-thing.

> Your script was tens of lines of code, and it was BUGGY.

Yeah well, I'm a retard.

> Hardlink git _object_ directories. That's a totally different thing.

I was under the misconception that hardlink entire trees was permissible.

I would however like to be able to hardlink more than just the _object_ directory --- hardlinking the source is quite nice too. Might that be considered safe? (I'm of course assuming that editors do write + rename when saving their buffers).