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From: Jens Lehmann <Jens.Lehmann@web.de>
To: Duy Nguyen <pclouds@gmail.com>, Max Kirillov <max@max630.net>
Cc: Junio C Hamano <gitster@pobox.com>,
	Heiko Voigt <hvoigt@hvoigt.net>,
	Johannes Schindelin <johannes.schindelin@gmx.de>,
	Git Mailing List <git@vger.kernel.org>
Subject: Re: [PATCH 0/4] Multiple worktrees vs. submodules fixes
Date: Tue, 14 Oct 2014 19:09:45 +0200	[thread overview]
Message-ID: <543D58D9.5060606@web.de> (raw)
In-Reply-To: <CACsJy8BUtkWKE+P_sHgpAY6wJ9tpzxZRtZHULiLoO=dGnBjkHQ@mail.gmail.com>

Am 14.10.2014 um 14:17 schrieb Duy Nguyen:
> On Sun, Oct 12, 2014 at 12:13 PM, Max Kirillov <max@max630.net> wrote:
>> These are fixes of issues with submodules with use of multiple working
>> trees.
>
> I think the patches look fine from the nd/multiple-work-trees writer's
> perspective. I know too little about submodules to judge if this is
> the right way and not that way..

Sorry, I was too busy to review this work until now, but here we go:

If I understand multiple work trees correctly, everything except work
tree local stuff is redirected into GIT_COMMON_DIR. This is a very cool
feature I'd love to see on our CI server to reduce disk footprint and
clone times, especially for submodules!

But I can't see how that can work by just sharing the modules directory
tree, as that contains work tree related files - e.g. the index - for
each submodule. AFAICS sharing them between work trees will work only
if the content of the modules directory is partly present in GIT_DIR -
for work tree related files - and only the common stuff is taken from
GIT_COMMON_DIR (Or did I just miss the magic that already does that?).
And I didn't try to wrap my head around recursive submodules yet ...

Until that problem is solved it looks wrong to pass GIT_COMMON_DIR into
submodule recursion, I believe GIT_COMMON_DIR should be added to the
local_repo_env array (and even if it is passed on later, we might have
to append "/modules/<submodule_name>" to make it point to the correct
location).

But maybe I'm missing something?

  reply	other threads:[~2014-10-14 17:10 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-10-12  5:13 [PATCH 0/4] Multiple worktrees vs. submodules fixes Max Kirillov
2014-10-12  5:13 ` [PATCH 1/4] checkout: do not fail if target is an empty directory Max Kirillov
2014-10-12  5:13 ` [PATCH 2/4] submodule refactor: use git_path_submodule() in add_submodule_odb() Max Kirillov
2014-10-12  5:13 ` [PATCH 3/4] git-common-dir: make "modules/" per-working-directory directory Max Kirillov
2014-10-12  5:13 ` [PATCH 4/4] path: implement common_dir handling in git_path_submodule() Max Kirillov
2014-10-14 12:17 ` [PATCH 0/4] Multiple worktrees vs. submodules fixes Duy Nguyen
2014-10-14 17:09   ` Jens Lehmann [this message]
2014-10-14 17:26     ` Junio C Hamano
2014-10-14 18:34       ` Max Kirillov
2014-10-14 19:51         ` Jens Lehmann
2014-10-14 22:15           ` Max Kirillov
2014-10-15 14:14             ` Duy Nguyen
2014-10-15 18:57             ` Jens Lehmann
2014-10-16 20:54               ` Max Kirillov
2014-10-19 19:30                 ` Jens Lehmann
2014-10-20  4:11                   ` Max Kirillov
2014-11-03 12:54                     ` Duy Nguyen
2014-11-03 20:57                       ` Jens Lehmann
2014-11-03 22:07                       ` Max Kirillov
2014-10-14 20:31     ` Max Kirillov
2014-10-15 13:08       ` Duy Nguyen
2014-10-15 17:09         ` Junio C Hamano
2014-10-17  9:14           ` Duy Nguyen
2014-10-19 19:34             ` Jens Lehmann

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