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From: Phillip Wood <phillip.wood123@gmail.com>
To: Derrick Stolee <derrickstolee@github.com>,
	Han-Wen Nienhuys <hanwen@google.com>,
	Derrick Stolee via GitGitGadget <gitgitgadget@gmail.com>
Cc: git@vger.kernel.org, jrnieder@gmail.com, John Cai <johncai86@gmail.com>
Subject: Re: [PATCH 00/30] [RFC] extensions.refFormat and packed-refs v2 file format
Date: Wed, 30 Nov 2022 15:38:29 +0000	[thread overview]
Message-ID: <0e3ab2bb-68ed-8e77-ac0b-afeb5ca88def@dunelm.org.uk> (raw)
In-Reply-To: <f1c45bd5-692e-85db-90c3-c516003f47e5@github.com>

Hi Stolee

On 30/11/2022 15:16, Derrick Stolee wrote:
> On 11/28/2022 1:56 PM, Han-Wen Nienhuys wrote:
>> * Worktrees and the main repository have a separate view of the ref
>> namespace. This is not explicit in the ref backend API, and there is a
>> technical limitation that the packed-refs file cannot be in a
>> worktree. This means that worktrees will always continue to use
>> loose-ref storage if you only extend the packed-refs backend.
> 
> If I'm understanding it correctly [1], only the special refs (like HEAD or
> REBASE_HEAD) are worktree-specific, and all refs under "refs/*" are
> repository-scoped. I don't actually think of those special refs as "loose"
> refs and thus they should still work under the "only packed-refs" value
> for extensions.refFormat. I should definitely cover this in the
> documentation, though. Also, [1] probably needs updating because it calls
> HEAD a pseudo ref even though it explicitly is not [2].
>
 > [1] https://git-scm.com/docs/git-worktree#_refs
 > [2] 
https://git-scm.com/docs/gitglossary#Documentation/gitglossary.txt-aiddefpseudorefapseudoref

Unfortunately I think it is a little messier than that (see 
refs.c:is_per_worktree_ref()). refs/bisect/*, refs/rewritten/* and 
refs/worktree/* are all worktree specific.

Best Wishes

Phillip

  reply	other threads:[~2022-11-30 15:39 UTC|newest]

Thread overview: 56+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-11-07 18:35 [PATCH 00/30] [RFC] extensions.refFormat and packed-refs v2 file format Derrick Stolee via GitGitGadget
2022-11-07 18:35 ` [PATCH 01/30] hashfile: allow skipping the hash function Derrick Stolee via GitGitGadget
2022-11-07 18:35 ` [PATCH 02/30] read-cache: add index.computeHash config option Derrick Stolee via GitGitGadget
2022-11-11 23:31   ` Elijah Newren
2022-11-14 16:30     ` Derrick Stolee
2022-11-17 16:13   ` Ævar Arnfjörð Bjarmason
2022-11-07 18:35 ` [PATCH 03/30] extensions: add refFormat extension Derrick Stolee via GitGitGadget
2022-11-11 23:39   ` Elijah Newren
2022-11-16 14:37     ` Derrick Stolee
2022-11-07 18:35 ` [PATCH 04/30] config: fix multi-level bulleted list Derrick Stolee via GitGitGadget
2022-11-07 18:35 ` [PATCH 05/30] repository: wire ref extensions to ref backends Derrick Stolee via GitGitGadget
2022-11-07 18:35 ` [PATCH 06/30] refs: allow loose files without packed-refs Derrick Stolee via GitGitGadget
2022-11-07 18:35 ` [PATCH 07/30] chunk-format: number of chunks is optional Derrick Stolee via GitGitGadget
2022-11-07 18:35 ` [PATCH 08/30] chunk-format: document trailing table of contents Derrick Stolee via GitGitGadget
2022-11-07 18:35 ` [PATCH 09/30] chunk-format: store chunk offset during write Derrick Stolee via GitGitGadget
2022-11-07 18:35 ` [PATCH 10/30] chunk-format: allow trailing table of contents Derrick Stolee via GitGitGadget
2022-11-07 18:35 ` [PATCH 11/30] chunk-format: parse " Derrick Stolee via GitGitGadget
2022-11-07 18:35 ` [PATCH 12/30] refs: extract packfile format to new file Derrick Stolee via GitGitGadget
2022-11-07 18:35 ` [PATCH 13/30] packed-backend: extract add_write_error() Derrick Stolee via GitGitGadget
2022-11-07 18:35 ` [PATCH 14/30] packed-backend: extract iterator/updates merge Derrick Stolee via GitGitGadget
2022-11-07 18:35 ` [PATCH 15/30] packed-backend: create abstraction for writing refs Derrick Stolee via GitGitGadget
2022-11-07 18:35 ` [PATCH 16/30] config: add config values for packed-refs v2 Derrick Stolee via GitGitGadget
2022-11-07 18:35 ` [PATCH 17/30] packed-backend: create shell of v2 writes Derrick Stolee via GitGitGadget
2022-11-07 18:35 ` [PATCH 18/30] packed-refs: write file format version 2 Derrick Stolee via GitGitGadget
2022-11-07 18:35 ` [PATCH 19/30] packed-refs: read file format v2 Derrick Stolee via GitGitGadget
2022-11-07 18:35 ` [PATCH 20/30] packed-refs: read optional prefix chunks Derrick Stolee via GitGitGadget
2022-11-07 18:35 ` [PATCH 21/30] packed-refs: write " Derrick Stolee via GitGitGadget
2022-11-07 18:35 ` [PATCH 22/30] packed-backend: create GIT_TEST_PACKED_REFS_VERSION Derrick Stolee via GitGitGadget
2022-11-07 18:35 ` [PATCH 23/30] t1409: test with packed-refs v2 Derrick Stolee via GitGitGadget
2022-11-07 18:35 ` [PATCH 24/30] t5312: allow packed-refs v2 format Derrick Stolee via GitGitGadget
2022-11-07 18:35 ` [PATCH 25/30] t5502: add PACKED_REFS_V1 prerequisite Derrick Stolee via GitGitGadget
2022-11-07 18:36 ` [PATCH 26/30] t3210: require packed-refs v1 for some tests Derrick Stolee via GitGitGadget
2022-11-07 18:36 ` [PATCH 27/30] t*: skip packed-refs v2 over http tests Derrick Stolee via GitGitGadget
2022-11-07 18:36 ` [PATCH 28/30] ci: run GIT_TEST_PACKED_REFS_VERSION=2 in some builds Derrick Stolee via GitGitGadget
2022-11-07 18:36 ` [PATCH 29/30] p1401: create performance test for ref operations Derrick Stolee via GitGitGadget
2022-11-07 18:36 ` [PATCH 30/30] refs: skip hashing when writing packed-refs v2 Derrick Stolee via GitGitGadget
2022-11-09 15:15 ` [PATCH 00/30] [RFC] extensions.refFormat and packed-refs v2 file format Derrick Stolee
2022-11-11 23:28 ` Elijah Newren
2022-11-14  0:07   ` Derrick Stolee
2022-11-15  2:47     ` Elijah Newren
2022-11-16 14:45       ` Derrick Stolee
2022-11-17  4:28         ` Elijah Newren
2022-11-18 23:31     ` Junio C Hamano
2022-11-19  0:41       ` Elijah Newren
2022-11-19  3:00         ` Taylor Blau
2022-11-30 15:31       ` Derrick Stolee
2022-11-28 18:56 ` Han-Wen Nienhuys
2022-11-30 15:16   ` Derrick Stolee
2022-11-30 15:38     ` Phillip Wood [this message]
2022-11-30 16:37     ` Taylor Blau
2022-11-30 18:30     ` Han-Wen Nienhuys
2022-11-30 18:37       ` Sean Allred
2022-12-01 20:18       ` Derrick Stolee
2022-12-02 16:46         ` Han-Wen Nienhuys
2022-12-02 18:24           ` Ævar Arnfjörð Bjarmason
2022-11-30 22:55     ` Junio C Hamano

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