From: Patrick Steinhardt <ps@pks.im>
To: Derrick Stolee <derrickstolee@github.com>
Cc: Taylor Blau <me@ttaylorr.com>,
git@vger.kernel.org, peff@peff.net, dstolee@microsoft.com
Subject: Re: [PATCH] repack: fix geometric repacking with gitalternates
Date: Tue, 11 Apr 2023 19:26:04 +0200 [thread overview]
Message-ID: <ZDWYLPw4Hk0-12Fe@ncase> (raw)
In-Reply-To: <ZDWTp2RfFTbiE9I9@ncase>
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On Tue, Apr 11, 2023 at 07:06:48PM +0200, Patrick Steinhardt wrote:
> On Mon, Apr 10, 2023 at 11:06:49AM -0400, Derrick Stolee wrote:
> > On 4/5/2023 3:08 AM, Patrick Steinhardt wrote:
> > > On Tue, Apr 04, 2023 at 02:55:50PM -0400, Taylor Blau wrote:
> > >> On Tue, Apr 04, 2023 at 01:08:33PM +0200, Patrick Steinhardt wrote:
> [snip]
> > > I'd personally be fine to start honoring the `po_args.local` flag so
> > > that we skip over any non-local packfiles there while ignoring the
> > > larger problem of non-local geometric repacks breaking in certain
> > > scenarios. It would at least improve the status quo as users now have a
> > > way out in case they ever happen to hit that error. And it allows us to
> > > use geometric repacks in alternated repositories. But are we okay with
> > > punting on the larger issue for the time being?
> >
> > I think the real bug is isolated in write_midx_included_packs() in how
> > it may specify packs that the multi-pack-index cannot track. It should
> > be worth the time exploring if there is an easy fix there, and then the
> > po_args.local version can be used as a backup/performance tweak on top
> > of that.
>
> The problems are quite multi-faceted, but taken on their own most of the
> problems actually seem quite easy to fix. I've got a local patch series
> that addresses almost all of the pain points I have found until now:
>
> - A segfault in git-multi-pack-index(1) when passed no packfiles and a
> preferred packfile that it cannot find.
>
> - The issue that git-repack(1) asks git-multi-pack-index(1) to write an
> MIDX with packs that it cannot actually track because they are not
> local.
>
> - An issue with git-pack-objects(1) that keeps it from packing objects
> that are non-local due to the way `--stdin-packs` is only referring to
> the packfile basenames.
>
> - The fact that we don't honor `-l` when doing geometric repacking.
Ah, one more thing I forgot: add a safety mechanism that disables
writing bitmaps when we see non-local packs.
Patrick
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next prev parent reply other threads:[~2023-04-11 17:26 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-04 11:08 [PATCH] repack: fix geometric repacking with gitalternates Patrick Steinhardt
2023-04-04 18:55 ` Taylor Blau
2023-04-04 19:00 ` Taylor Blau
2023-04-05 7:08 ` Patrick Steinhardt
2023-04-10 15:06 ` Derrick Stolee
2023-04-10 23:49 ` Taylor Blau
2023-04-11 17:13 ` Patrick Steinhardt
2023-04-11 21:13 ` Taylor Blau
2023-04-12 9:37 ` Patrick Steinhardt
2023-04-11 17:06 ` Patrick Steinhardt
2023-04-11 17:26 ` Patrick Steinhardt [this message]
2023-04-11 21:14 ` Taylor Blau
2023-04-10 23:29 ` Taylor Blau
2023-04-12 10:22 ` [PATCH v2 0/8] " Patrick Steinhardt
2023-04-12 10:22 ` [PATCH v2 1/8] midx: fix segfault with no packs and invalid preferred pack Patrick Steinhardt
2023-04-12 17:56 ` Taylor Blau
2023-04-13 9:28 ` Patrick Steinhardt
2023-04-12 10:22 ` [PATCH v2 2/8] repack: fix trying to use preferred pack in alternates Patrick Steinhardt
2023-04-12 18:37 ` Taylor Blau
2023-04-13 9:31 ` Patrick Steinhardt
2023-04-12 10:22 ` [PATCH v2 3/8] repack: fix generating multi-pack-index with only non-local packs Patrick Steinhardt
2023-04-12 20:39 ` Taylor Blau
2023-04-12 10:22 ` [PATCH v2 4/8] pack-objects: fix error when packing same pack twice Patrick Steinhardt
2023-04-12 21:33 ` Taylor Blau
2023-04-12 10:22 ` [PATCH v2 5/8] pack-objects: fix error when same packfile is included and excluded Patrick Steinhardt
2023-04-12 21:52 ` Taylor Blau
2023-04-12 10:22 ` [PATCH v2 6/8] pack-objects: extend test coverage of `--stdin-packs` with alternates Patrick Steinhardt
2023-04-12 10:22 ` [PATCH v2 7/8] repack: honor `-l` when calculating pack geometry Patrick Steinhardt
2023-04-12 23:56 ` Junio C Hamano
2023-04-13 5:11 ` Junio C Hamano
2023-04-13 6:41 ` Patrick Steinhardt
2023-04-12 10:23 ` [PATCH v2 8/8] repack: disable writing bitmaps when doing a local geometric repack Patrick Steinhardt
2023-04-12 22:01 ` Taylor Blau
2023-04-13 9:54 ` Patrick Steinhardt
2023-04-13 10:14 ` Patrick Steinhardt
2023-04-12 22:02 ` [PATCH v2 0/8] repack: fix geometric repacking with gitalternates Taylor Blau
2023-04-13 11:16 ` [PATCH v3 00/10] " Patrick Steinhardt
2023-04-13 11:16 ` [PATCH v3 01/10] midx: fix segfault with no packs and invalid preferred pack Patrick Steinhardt
2023-04-13 13:49 ` Derrick Stolee
2023-04-13 11:16 ` [PATCH v3 02/10] repack: fix trying to use preferred pack in alternates Patrick Steinhardt
2023-04-13 11:16 ` [PATCH v3 03/10] repack: fix generating multi-pack-index with only non-local packs Patrick Steinhardt
2023-04-13 11:16 ` [PATCH v3 04/10] pack-objects: split out `--stdin-packs` tests into separate file Patrick Steinhardt
2023-04-13 11:16 ` [PATCH v3 05/10] pack-objects: fix error when packing same pack twice Patrick Steinhardt
2023-04-13 11:16 ` [PATCH v3 06/10] pack-objects: fix error when same packfile is included and excluded Patrick Steinhardt
2023-04-13 11:16 ` [PATCH v3 07/10] pack-objects: extend test coverage of `--stdin-packs` with alternates Patrick Steinhardt
2023-04-13 11:16 ` [PATCH v3 08/10] t/helper: allow chmtime to print verbosely without modifying mtime Patrick Steinhardt
2023-04-13 11:16 ` [PATCH v3 09/10] repack: honor `-l` when calculating pack geometry Patrick Steinhardt
2023-04-13 13:59 ` Derrick Stolee
2023-04-13 14:13 ` Patrick Steinhardt
2023-04-13 15:40 ` Junio C Hamano
2023-04-13 11:16 ` [PATCH v3 10/10] repack: disable writing bitmaps when doing a local repack Patrick Steinhardt
2023-04-13 14:54 ` [PATCH v3 00/10] repack: fix geometric repacking with gitalternates Derrick Stolee
2023-04-14 2:03 ` Junio C Hamano
2023-04-14 5:42 ` Patrick Steinhardt
2023-04-14 6:01 ` [PATCH v4 " Patrick Steinhardt
2023-04-14 6:01 ` [PATCH v4 01/10] midx: fix segfault with no packs and invalid preferred pack Patrick Steinhardt
2023-04-14 6:01 ` [PATCH v4 02/10] repack: fix trying to use preferred pack in alternates Patrick Steinhardt
2023-04-14 6:01 ` [PATCH v4 03/10] repack: fix generating multi-pack-index with only non-local packs Patrick Steinhardt
2023-04-14 6:01 ` [PATCH v4 04/10] pack-objects: split out `--stdin-packs` tests into separate file Patrick Steinhardt
2023-04-14 6:01 ` [PATCH v4 05/10] pack-objects: fix error when packing same pack twice Patrick Steinhardt
2023-04-14 6:01 ` [PATCH v4 06/10] pack-objects: fix error when same packfile is included and excluded Patrick Steinhardt
2023-04-14 6:01 ` [PATCH v4 07/10] pack-objects: extend test coverage of `--stdin-packs` with alternates Patrick Steinhardt
2023-04-14 6:02 ` [PATCH v4 08/10] t/helper: allow chmtime to print verbosely without modifying mtime Patrick Steinhardt
2023-04-14 6:02 ` [PATCH v4 09/10] repack: honor `-l` when calculating pack geometry Patrick Steinhardt
2023-04-14 6:02 ` [PATCH v4 10/10] repack: disable writing bitmaps when doing a local repack Patrick Steinhardt
2023-04-14 13:23 ` [PATCH v4 00/10] repack: fix geometric repacking with gitalternates Derrick Stolee
2023-04-14 17:29 ` Junio C Hamano
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