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From: Christian Couder <christian.couder@gmail.com>
To: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Cc: Derrick Stolee <stolee@gmail.com>,
	Derrick Stolee via GitGitGadget <gitgitgadget@gmail.com>,
	git <git@vger.kernel.org>,
	"brian m. carlson" <sandals@crustytoothpaste.net>,
	Junio C Hamano <gitster@pobox.com>, Jeff King <peff@peff.net>
Subject: Re: [PATCH v3 0/6] Create commit-graph file format v2
Date: Mon, 6 May 2019 10:27:38 +0200
Message-ID: <CAP8UFD2tnkNfgjm=H__=YPG-+BuOHwHs9=OoXnL9wnj_eOtbQg@mail.gmail.com> (raw)
In-Reply-To: <87bm0jirjj.fsf@evledraar.gmail.com>

On Fri, May 3, 2019 at 3:44 PM Ævar Arnfjörð Bjarmason <avarab@gmail.com> wrote:
>
>
> On Fri, May 03 2019, Derrick Stolee wrote:
>
> > On 5/2/2019 2:02 PM, Ævar Arnfjörð Bjarmason wrote:
> >>
> >> But those are separate from any back-compat concerns, which is what I
> >> think makes sense to focus on now.
> >
> > Thinking more on this topic, I think I have a way to satisfy _all_ of
> > your concerns by simplifying the plan for incremental commit-graph files.

[...]

> Just on this, consider storing them in
> .git/objects/info/commit-graphs/commit-graph-<THIS-FILE'S-CHECKSUM-SHA1>,
> because:
>
> 1) We can stat() the "commit-graphs" directory to see if there's any
>    new/deleted ones (dir mtime changed), similar to what we do for the
>    untracked cache, and can (but I don't think we do...) do for packs/*
>    and objects/??/.
>
>    As opposed to ".git/objects/info" itself which e.g. has the "packs",
>    "alternates" etc. files (can still do it, but more false positives)

About incremental commit-graph files and alternates, I wonder if they
could work well together. The main use case would be for servers that
use a common repo for all the forks.

  reply index

Thread overview: 89+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-23 21:59 [PATCH " Derrick Stolee via GitGitGadget
2019-01-23 21:59 ` [PATCH 1/6] commit-graph: return with errors during write Derrick Stolee via GitGitGadget
2019-01-23 21:59 ` [PATCH 2/6] commit-graph: collapse parameters into flags Derrick Stolee via GitGitGadget
2019-01-23 21:59 ` [PATCH 3/6] commit-graph: create new version flags Derrick Stolee via GitGitGadget
2019-01-23 21:59 ` [PATCH 4/6] commit-graph: add --version=<n> option Derrick Stolee via GitGitGadget
2019-01-24  9:31   ` Ævar Arnfjörð Bjarmason
2019-01-23 21:59 ` [PATCH 5/6] commit-graph: implement file format version 2 Derrick Stolee via GitGitGadget
2019-01-23 23:56   ` Jonathan Tan
2019-01-24  9:40   ` Ævar Arnfjörð Bjarmason
2019-01-24 14:34     ` Derrick Stolee
2019-03-21  9:21   ` Ævar Arnfjörð Bjarmason
2019-01-23 21:59 ` [PATCH 6/6] commit-graph: test verifying a corrupt v2 header Derrick Stolee via GitGitGadget
2019-01-23 23:59   ` Jonathan Tan
2019-01-24 23:05 ` [PATCH 0/6] Create commit-graph file format v2 Junio C Hamano
2019-01-24 23:39 ` Junio C Hamano
2019-01-25 13:54   ` Derrick Stolee
2019-04-24 19:58 ` [PATCH v2 0/5] " Derrick Stolee via GitGitGadget
2019-04-24 19:58   ` [PATCH v2 1/5] commit-graph: return with errors during write Derrick Stolee via GitGitGadget
2019-04-24 19:58   ` [PATCH v2 2/5] commit-graph: collapse parameters into flags Derrick Stolee via GitGitGadget
2019-04-25  5:21     ` Junio C Hamano
2019-04-24 19:58   ` [PATCH v2 3/5] commit-graph: create new version flags Derrick Stolee via GitGitGadget
2019-04-25  5:29     ` Junio C Hamano
2019-04-25 11:09       ` Derrick Stolee
2019-04-25 21:31     ` Ævar Arnfjörð Bjarmason
2019-04-26  2:20       ` Junio C Hamano
2019-04-24 19:58   ` [PATCH v2 4/5] commit-graph: add --version=<n> option Derrick Stolee via GitGitGadget
2019-04-24 19:58   ` [PATCH v2 5/5] commit-graph: implement file format version 2 Derrick Stolee via GitGitGadget
2019-04-25 22:09   ` [PATCH v2 0/5] Create commit-graph file format v2 Ævar Arnfjörð Bjarmason
2019-04-26  2:28     ` Junio C Hamano
2019-04-26  8:33       ` Ævar Arnfjörð Bjarmason
2019-04-26 12:06         ` Derrick Stolee
2019-04-26 13:55           ` Ævar Arnfjörð Bjarmason
2019-04-27 12:57     ` Ævar Arnfjörð Bjarmason
2019-05-01 13:11   ` [PATCH v3 0/6] " Derrick Stolee via GitGitGadget
2019-05-01 13:11     ` [PATCH v3 1/6] commit-graph: return with errors during write Derrick Stolee via GitGitGadget
2019-05-01 14:46       ` Ævar Arnfjörð Bjarmason
2019-05-01 13:11     ` [PATCH v3 2/6] commit-graph: collapse parameters into flags Derrick Stolee via GitGitGadget
2019-05-01 13:11     ` [PATCH v3 3/6] commit-graph: create new version parameter Derrick Stolee via GitGitGadget
2019-05-01 13:11     ` [PATCH v3 4/6] commit-graph: add --version=<n> option Derrick Stolee via GitGitGadget
2019-05-01 13:11     ` [PATCH v3 5/6] commit-graph: implement file format version 2 Derrick Stolee via GitGitGadget
2019-05-01 19:12       ` Ævar Arnfjörð Bjarmason
2019-05-01 19:56         ` Derrick Stolee
2019-05-01 13:11     ` [PATCH v3 6/6] commit-graph: remove Future Work section Derrick Stolee via GitGitGadget
2019-05-01 14:58       ` Ævar Arnfjörð Bjarmason
2019-05-01 19:59         ` Derrick Stolee
2019-05-01 20:25     ` [PATCH v3 0/6] Create commit-graph file format v2 Ævar Arnfjörð Bjarmason
2019-05-02 13:26       ` Derrick Stolee
2019-05-02 18:02         ` Ævar Arnfjörð Bjarmason
2019-05-03 12:47           ` Derrick Stolee
2019-05-03 13:41             ` Ævar Arnfjörð Bjarmason
2019-05-06  8:27               ` Christian Couder [this message]
2019-05-06 13:47                 ` Derrick Stolee
2019-05-03 14:16             ` SZEDER Gábor
2019-05-03 15:11               ` Derrick Stolee
2019-05-09 14:22     ` [PATCH v4 00/11] Commit-graph write refactor (was: Create commit-graph file format v2) Derrick Stolee via GitGitGadget
2019-05-09 14:22       ` [PATCH v4 01/11] commit-graph: fix the_repository reference Derrick Stolee via GitGitGadget
2019-05-13  2:56         ` Junio C Hamano
2019-05-09 14:22       ` [PATCH v4 02/11] commit-graph: return with errors during write Derrick Stolee via GitGitGadget
2019-05-13  3:13         ` Junio C Hamano
2019-05-13 11:04           ` Derrick Stolee
2019-05-13 11:22             ` Derrick Stolee
2019-05-09 14:22       ` [PATCH v4 03/11] commit-graph: collapse parameters into flags Derrick Stolee via GitGitGadget
2019-05-13  3:44         ` Junio C Hamano
2019-05-13 11:07           ` Derrick Stolee
2019-05-09 14:22       ` [PATCH v4 04/11] commit-graph: remove Future Work section Derrick Stolee via GitGitGadget
2019-05-09 14:22       ` [PATCH v4 05/11] commit-graph: create write_commit_graph_context Derrick Stolee via GitGitGadget
2019-05-09 14:22       ` [PATCH v4 07/11] commit-graph: extract fill_oids_from_commit_hex() Derrick Stolee via GitGitGadget
2019-05-09 14:22       ` [PATCH v4 06/11] commit-graph: extract fill_oids_from_packs() Derrick Stolee via GitGitGadget
2019-05-13  5:05         ` Junio C Hamano
2019-05-09 14:22       ` [PATCH v4 08/11] commit-graph: extract fill_oids_from_all_packs() Derrick Stolee via GitGitGadget
2019-05-09 14:22       ` [PATCH v4 09/11] commit-graph: extract count_distinct_commits() Derrick Stolee via GitGitGadget
2019-05-09 14:22       ` [PATCH v4 10/11] commit-graph: extract copy_oids_to_commits() Derrick Stolee via GitGitGadget
2019-05-09 14:22       ` [PATCH v4 11/11] commit-graph: extract write_commit_graph_file() Derrick Stolee via GitGitGadget
2019-05-13  5:09         ` Junio C Hamano
2019-05-09 17:58       ` [PATCH v4 00/11] Commit-graph write refactor (was: Create commit-graph file format v2) Josh Steadmon
2019-06-12 13:29       ` [PATCH v5 " Derrick Stolee via GitGitGadget
2019-06-12 13:29         ` [PATCH v5 01/11] commit-graph: fix the_repository reference Derrick Stolee via GitGitGadget
2019-06-12 13:29         ` [PATCH v5 02/11] commit-graph: return with errors during write Derrick Stolee via GitGitGadget
2019-06-29 17:23           ` SZEDER Gábor
2019-07-01 12:19             ` Derrick Stolee
2019-06-12 13:29         ` [PATCH v5 03/11] commit-graph: collapse parameters into flags Derrick Stolee via GitGitGadget
2019-06-12 13:29         ` [PATCH v5 04/11] commit-graph: remove Future Work section Derrick Stolee via GitGitGadget
2019-06-12 13:29         ` [PATCH v5 05/11] commit-graph: create write_commit_graph_context Derrick Stolee via GitGitGadget
2019-06-12 13:29         ` [PATCH v5 06/11] commit-graph: extract fill_oids_from_packs() Derrick Stolee via GitGitGadget
2019-06-12 13:29         ` [PATCH v5 08/11] commit-graph: extract fill_oids_from_all_packs() Derrick Stolee via GitGitGadget
2019-06-12 13:29         ` [PATCH v5 07/11] commit-graph: extract fill_oids_from_commit_hex() Derrick Stolee via GitGitGadget
2019-06-12 13:29         ` [PATCH v5 09/11] commit-graph: extract count_distinct_commits() Derrick Stolee via GitGitGadget
2019-06-12 13:29         ` [PATCH v5 10/11] commit-graph: extract copy_oids_to_commits() Derrick Stolee via GitGitGadget
2019-06-12 13:29         ` [PATCH v5 11/11] commit-graph: extract write_commit_graph_file() Derrick Stolee via GitGitGadget

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