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From: Taylor Blau <me@ttaylorr.com>
To: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
Cc: git@vger.kernel.org, Junio C Hamano <gitster@pobox.com>,
	Jeff King <peff@peff.net>
Subject: Re: [PATCH 0/3] rename *.idx file into place last (also after *.bitmap)
Date: Tue, 7 Sep 2021 18:36:18 -0400	[thread overview]
Message-ID: <YTfpYsJ0J5t+xf8v@nand.local> (raw)
In-Reply-To: <cover-0.3-00000000000-20210907T193600Z-avarab@gmail.com>

On Tue, Sep 07, 2021 at 09:42:35PM +0200, Ævar Arnfjörð Bjarmason wrote:
> I came up with this on top of Taylor's series which fixes the order in
> which we write files associated with pack files[1]. His series fixes a
> race where we write *.idx before *.rev, but left the issue of writing
> *.bitmap after *.idx, this series fixes that. Now we'll really write
> the *.idx last.

Nice catch. And fixing this race (by moving the .bitmap into place
before the .idx) doesn't create another race, because
open_pack_bitmap_1() returns early when the call to open_pack_index()
fails.

(And furthermore, open_pack_bitmap_1() is only called on the list of
packs generated by calling prepare_pack() over each file in
objects/pack, which only adds a pack to the list if its .idx file
exists, too).

I reviewed this series and left a few notes which I
would like to see addressed/responded to before queuing, but this seems
to be generally of the right approach to me.

Thanks,
Taylor

  parent reply	other threads:[~2021-09-07 22:36 UTC|newest]

Thread overview: 81+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-01  2:05 [PATCH 0/2] pack-write,repack: prevent opening packs too early Taylor Blau
2021-09-01  2:06 ` [PATCH 1/2] pack-write.c: rename `.idx` file into place last Taylor Blau
2021-09-01  2:06 ` [PATCH 2/2] builtin/repack.c: move `.idx` files " Taylor Blau
2021-09-01  3:53 ` [PATCH 0/2] pack-write,repack: prevent opening packs too early Jeff King
2021-09-01  4:29   ` Taylor Blau
2021-09-01  4:59     ` Jeff King
2021-09-01  5:12       ` Taylor Blau
2021-09-01  6:08         ` Jeff King
2021-09-01 21:40           ` Taylor Blau
2021-09-07 16:07             ` Jeff King
2021-09-07 19:42 ` [PATCH 0/3] rename *.idx file into place last (also after *.bitmap) Ævar Arnfjörð Bjarmason
2021-09-07 19:42   ` [PATCH 1/3] pack-write: use more idiomatic strbuf usage for packname construction Ævar Arnfjörð Bjarmason
2021-09-07 22:21     ` Taylor Blau
2021-09-07 23:22       ` Ævar Arnfjörð Bjarmason
2021-09-07 19:42   ` [PATCH 2/3] pack-write: split up finish_tmp_packfile() function Ævar Arnfjörð Bjarmason
2021-09-07 22:28     ` Taylor Blau
2021-09-07 19:42   ` [PATCH 3/3] pack-write: rename *.idx file into place last (really!) Ævar Arnfjörð Bjarmason
2021-09-07 22:31     ` Taylor Blau
2021-09-07 22:36   ` Taylor Blau [this message]
2021-09-07 19:48 ` [PATCH 0/2] pack-write,repack: prevent opening packs too early Ævar Arnfjörð Bjarmason
2021-09-08  0:38 ` [PATCH v2 0/4] rename *.idx file into place last (also after *.bitmap) Ævar Arnfjörð Bjarmason
2021-09-08  0:38   ` [PATCH v2 1/4] pack.h: line-wrap the definition of finish_tmp_packfile() Ævar Arnfjörð Bjarmason
2021-09-08  0:38   ` [PATCH v2 2/4] pack-write: refactor renaming in finish_tmp_packfile() Ævar Arnfjörð Bjarmason
2021-09-08  4:22     ` Taylor Blau
2021-09-08  0:38   ` [PATCH v2 3/4] pack-write: split up finish_tmp_packfile() function Ævar Arnfjörð Bjarmason
2021-09-08  0:38   ` [PATCH v2 4/4] pack-write: rename *.idx file into place last (really!) Ævar Arnfjörð Bjarmason
2021-09-08  1:14     ` Ævar Arnfjörð Bjarmason
2021-09-08  9:18       ` Ævar Arnfjörð Bjarmason
2021-09-08  4:24     ` Taylor Blau
2021-09-08 22:17 ` [PATCH v2 0/3] prevent opening packs too early Taylor Blau
2021-09-08 22:17   ` [PATCH v2 1/3] pack-write.c: rename `.idx` files into place last Taylor Blau
2021-09-08 22:17   ` [PATCH v2 2/3] builtin/repack.c: move " Taylor Blau
2021-09-08 22:17   ` [PATCH v2 3/3] builtin/index-pack.c: " Taylor Blau
2021-09-08 23:52   ` [PATCH v2 0/3] prevent opening packs too early Ævar Arnfjörð Bjarmason
2021-09-09  0:50     ` Ævar Arnfjörð Bjarmason
2021-09-09  1:13       ` Taylor Blau
2021-09-09  1:33         ` Ævar Arnfjörð Bjarmason
2021-09-09  2:36           ` Ævar Arnfjörð Bjarmason
2021-09-09  2:49             ` Taylor Blau
2021-09-09  3:24 ` [PATCH 0/9] packfile: avoid .idx rename races Taylor Blau
2021-09-09  3:24   ` [PATCH 1/9] pack.h: line-wrap the definition of finish_tmp_packfile() Taylor Blau
2021-09-09  3:24   ` [PATCH 2/9] bulk-checkin.c: store checksum directly Taylor Blau
2021-09-09  7:38     ` Ævar Arnfjörð Bjarmason
2021-09-09  3:24   ` [PATCH 3/9] pack-write: refactor renaming in finish_tmp_packfile() Taylor Blau
2021-09-09 19:29     ` Junio C Hamano
2021-09-09 21:07       ` Taylor Blau
2021-09-09 23:30         ` Junio C Hamano
2021-09-09 23:31           ` Taylor Blau
2021-09-10  1:29         ` Junio C Hamano
2021-09-09  3:24   ` [PATCH 4/9] pack-write.c: rename `.idx` files after `*.rev` Taylor Blau
2021-09-09  7:46     ` Ævar Arnfjörð Bjarmason
2021-09-09 14:37       ` Taylor Blau
2021-09-09 19:32     ` Junio C Hamano
2021-09-09  3:25   ` [PATCH 5/9] builtin/repack.c: move `.idx` files into place last Taylor Blau
2021-09-09 19:38     ` Junio C Hamano
2021-09-09 21:08       ` Taylor Blau
2021-09-09  3:25   ` [PATCH 6/9] index-pack: refactor renaming in final() Taylor Blau
2021-09-09 19:45     ` Junio C Hamano
2021-09-09 21:11       ` Taylor Blau
2021-09-09  3:25   ` [PATCH 7/9] builtin/index-pack.c: move `.idx` files into place last Taylor Blau
2021-09-09  7:52     ` Ævar Arnfjörð Bjarmason
2021-09-09 19:45     ` Junio C Hamano
2021-09-09  3:25   ` [PATCH 8/9] pack-write: split up finish_tmp_packfile() function Taylor Blau
2021-09-09  3:25   ` [PATCH 9/9] pack-objects: rename .idx files into place after .bitmap files Taylor Blau
2021-09-09  7:54     ` Ævar Arnfjörð Bjarmason
2021-09-09 19:52       ` Junio C Hamano
2021-09-09 21:13         ` Taylor Blau
2021-09-09  8:06   ` [PATCH 0/9] packfile: avoid .idx rename races Ævar Arnfjörð Bjarmason
2021-09-09 14:40     ` Taylor Blau
2021-09-09 19:52       ` Junio C Hamano
2021-09-09 23:24   ` [PATCH v2 " Taylor Blau
2021-09-09 23:24     ` [PATCH v2 1/9] pack.h: line-wrap the definition of finish_tmp_packfile() Taylor Blau
2021-09-09 23:24     ` [PATCH v2 2/9] bulk-checkin.c: store checksum directly Taylor Blau
2021-09-09 23:24     ` [PATCH v2 3/9] pack-write: refactor renaming in finish_tmp_packfile() Taylor Blau
2021-09-09 23:24     ` [PATCH v2 4/9] pack-write.c: rename `.idx` files after `*.rev` Taylor Blau
2021-09-09 23:24     ` [PATCH v2 5/9] builtin/repack.c: move `.idx` files into place last Taylor Blau
2021-09-09 23:24     ` [PATCH v2 6/9] index-pack: refactor renaming in final() Taylor Blau
2021-09-09 23:24     ` [PATCH v2 7/9] builtin/index-pack.c: move `.idx` files into place last Taylor Blau
2021-09-09 23:24     ` [PATCH v2 8/9] pack-write: split up finish_tmp_packfile() function Taylor Blau
2021-09-09 23:25     ` [PATCH v2 9/9] pack-objects: rename .idx files into place after .bitmap files Taylor Blau
2021-09-10  1:35     ` [PATCH v2 0/9] packfile: avoid .idx rename races Junio C Hamano

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