From: Tom Saeger <tom.saeger@oracle.com>
To: Junio C Hamano <gitster@pobox.com>
Cc: Derrick Stolee via GitGitGadget <gitgitgadget@gmail.com>,
git@vger.kernel.org, sunshine@sunshineco.com,
Derrick Stolee <stolee@gmail.com>,
Josh Steadmon <steadmon@google.com>,
Emily Shaffer <emilyshaffer@google.com>,
Derrick Stolee <derrickstolee@github.com>
Subject: Re: [PATCH v3 0/3] Maintenance: adapt custom refspecs
Date: Mon, 12 Apr 2021 11:48:05 -0500 [thread overview]
Message-ID: <20210412164805.pxq7acln43gbggkl@dhcp-10-154-186-72.vpn.oracle.com> (raw)
In-Reply-To: <xmqqtuodiowj.fsf@gitster.g>
On Sat, Apr 10, 2021 at 06:35:40PM -0700, Junio C Hamano wrote:
> "Derrick Stolee via GitGitGadget" <gitgitgadget@gmail.com> writes:
>
> > * The fix is almost completely rewritten as an update to 'git fetch'. See
> > the new PATCH 2 for this update.
>
> I do agree that it gives us the most flexibility there with nice
> encapsulation. Nobody other than "git fetch" needs to know how it
> computes which remote refs are fetched given the real pathspec, and
> the only thing the caller with "--prefetch" is interested in is that
> the prefetch operation would not contaminate the remote-tracking
> refs.
>
> Great idea. I wish I were the one who thought of it first ;-)
Yes - this simplifies things greatly!
I do have one case that fails prefetch though.
It's a case where all the remote's fetch configs are filtered out.
Example:
[remote "pr-924"]
url = https://github.com/gitgitgadget/git
fetch = +refs/tags/pr-924/derrickstolee/maintenance/refspec-v3
skipfetchall = true
tagopt = --no-tags
In this case, running `git fetch pr-924` will fetch and update
FETCH_HEAD, but running with maintenance prefetch task results in:
fatal: Couldn't find remote ref HEAD
error: failed to prefetch remotes
error: task 'prefetch' failed
I tracked this down a bit, but don't have a suggestion how to fix it.
builtin/fetch.c `get_ref_map` makes two calls to `filter_prefetch_refspec`,
one for 'rs' and another for 'remote->fetch'.
`filter_prefetch_refspec` works and filters out the above fetch config.
This correctly yields condition
`rs->nr == 0` and `remote->fetch.nr == 0`
Later a call is made to `get_remote_ref(remote_refs, "HEAD")` which
fails, leading to `fatal: Couldn't find remote ref HEAD`
Should this be expected, or should this now be special-cased for 'prefetch'
somehow?
Regards,
--Tom
next prev parent reply other threads:[~2021-04-12 16:52 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-05 13:04 [PATCH 0/5] Maintenance: adapt custom refspecs Derrick Stolee via GitGitGadget
2021-04-05 13:04 ` [PATCH 1/5] maintenance: simplify prefetch logic Derrick Stolee via GitGitGadget
2021-04-05 17:01 ` Tom Saeger
2021-04-05 13:04 ` [PATCH 2/5] test-lib: use exact match for test_subcommand Derrick Stolee via GitGitGadget
2021-04-05 17:31 ` Eric Sunshine
2021-04-05 17:43 ` Junio C Hamano
2021-04-05 13:04 ` [PATCH 3/5] refspec: output a refspec item Derrick Stolee via GitGitGadget
2021-04-05 16:57 ` Tom Saeger
2021-04-05 17:40 ` Eric Sunshine
2021-04-05 17:44 ` Junio C Hamano
2021-04-06 11:21 ` Derrick Stolee
2021-04-06 15:23 ` Eric Sunshine
2021-04-06 16:51 ` Derrick Stolee
2021-04-07 8:46 ` Ævar Arnfjörð Bjarmason
2021-04-07 20:53 ` Derrick Stolee
2021-04-07 22:05 ` Ævar Arnfjörð Bjarmason
2021-04-07 22:49 ` Junio C Hamano
2021-04-07 23:01 ` Ævar Arnfjörð Bjarmason
2021-04-08 7:33 ` Junio C Hamano
2021-04-05 13:04 ` [PATCH 4/5] test-tool: test refspec input/output Derrick Stolee via GitGitGadget
2021-04-05 17:52 ` Eric Sunshine
2021-04-06 11:13 ` Derrick Stolee
2021-04-07 8:54 ` Ævar Arnfjörð Bjarmason
2021-04-05 13:04 ` [PATCH 5/5] maintenance: allow custom refspecs during prefetch Derrick Stolee via GitGitGadget
2021-04-05 17:16 ` Tom Saeger
2021-04-06 11:15 ` Derrick Stolee
2021-04-07 8:53 ` Ævar Arnfjörð Bjarmason
2021-04-07 10:26 ` Ævar Arnfjörð Bjarmason
2021-04-09 11:48 ` Derrick Stolee
2021-04-09 19:28 ` Ævar Arnfjörð Bjarmason
2021-04-10 0:56 ` Derrick Stolee
2021-04-10 11:37 ` Ævar Arnfjörð Bjarmason
2021-04-07 13:47 ` Ævar Arnfjörð Bjarmason
2021-04-06 18:47 ` [PATCH v2 0/5] Maintenance: adapt custom refspecs Derrick Stolee via GitGitGadget
2021-04-06 18:47 ` [PATCH v2 1/5] maintenance: simplify prefetch logic Derrick Stolee via GitGitGadget
2021-04-07 23:23 ` Emily Shaffer
2021-04-09 19:00 ` Derrick Stolee
2021-04-06 18:47 ` [PATCH v2 2/5] test-lib: use exact match for test_subcommand Derrick Stolee via GitGitGadget
2021-04-06 18:47 ` [PATCH v2 3/5] refspec: output a refspec item Derrick Stolee via GitGitGadget
2021-04-06 18:47 ` [PATCH v2 4/5] test-tool: test refspec input/output Derrick Stolee via GitGitGadget
2021-04-07 23:08 ` Josh Steadmon
2021-04-07 23:26 ` Emily Shaffer
2021-04-06 18:47 ` [PATCH v2 5/5] maintenance: allow custom refspecs during prefetch Derrick Stolee via GitGitGadget
2021-04-06 19:36 ` Tom Saeger
2021-04-06 19:45 ` Derrick Stolee
2021-04-07 23:09 ` Josh Steadmon
2021-04-07 23:37 ` Emily Shaffer
2021-04-08 0:23 ` Jonathan Tan
2021-04-10 2:03 ` [PATCH v3 0/3] Maintenance: adapt custom refspecs Derrick Stolee via GitGitGadget
2021-04-10 2:03 ` [PATCH v3 1/3] maintenance: simplify prefetch logic Derrick Stolee via GitGitGadget
2021-04-12 20:13 ` Tom Saeger
2021-04-12 20:27 ` Derrick Stolee
2021-04-10 2:03 ` [PATCH v3 2/3] fetch: add --prefetch option Derrick Stolee via GitGitGadget
2021-04-11 21:09 ` Ramsay Jones
2021-04-12 20:23 ` Derrick Stolee
2021-04-10 2:03 ` [PATCH v3 3/3] maintenance: use 'git fetch --prefetch' Derrick Stolee via GitGitGadget
2021-04-11 1:35 ` [PATCH v3 0/3] Maintenance: adapt custom refspecs Junio C Hamano
2021-04-12 16:48 ` Tom Saeger [this message]
2021-04-12 17:24 ` Tom Saeger
2021-04-12 17:41 ` Tom Saeger
2021-04-12 20:25 ` Derrick Stolee
2021-04-16 12:49 ` [PATCH v4 0/4] " Derrick Stolee via GitGitGadget
2021-04-16 12:49 ` [PATCH v4 1/4] maintenance: simplify prefetch logic Derrick Stolee via GitGitGadget
2021-04-16 18:02 ` Tom Saeger
2021-04-16 12:49 ` [PATCH v4 2/4] fetch: add --prefetch option Derrick Stolee via GitGitGadget
2021-04-16 17:52 ` Tom Saeger
2021-04-16 18:26 ` Tom Saeger
2021-04-16 12:49 ` [PATCH v4 3/4] maintenance: use 'git fetch --prefetch' Derrick Stolee via GitGitGadget
2021-04-16 12:49 ` [PATCH v4 4/4] maintenance: respect remote.*.skipFetchAll Derrick Stolee via GitGitGadget
2021-04-16 13:54 ` Ævar Arnfjörð Bjarmason
2021-04-16 14:33 ` Tom Saeger
2021-04-16 18:31 ` Tom Saeger
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