[PATCH] refs: fix migration of reflogs respecting "core.logAllRefUpdates"
- From
Patrick Steinhardt <ps@pks.im>
- Date
- Jan 22, 2025, 09:48 UTC
- Message-ID
- <20250122-b4-pks-reflog-migration-fix-stash-v1-1-27dbae4602f7@pks.im>
In 246cebe320 (refs: add support for migrating reflogs, 2024-12-16) we have added support to git-refs(1) to migrate reflogs between reference backends. It was reported [1] though that not we don't migrate reflogs for a subset of references, most importantly "refs/stash".
This issue is caused by us still honoring "core.logAllRefUpdates" when trying to migrate reflogs: we do queue the updates, but depending on the value of that config we may decide to just skip writing the reflog entry altogether. And given that:
- The default for "core.logAllRefUpdates" is to only create reflogs
for branches, remotes, note refs and "HEAD"- "refs/stash" is neither of these ref types.
We end up skipping the reflog creation for that particular reference.
Fix the bug by setting `REF_FORCE_CREATE_REFLOG`, which instructs the ref backends to create the reflog entry regardless of the config or any preexisting state.
[1]: <Z5BTQRlsOj1sygun@tapette.crustytoothpaste.net>
Reported-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Patrick Steinhardt <ps@pks.im> --- Hi,
this patch addresses the issue reported by brian where "refs/stash" isn't getting migrated correctly. The patch is based on top of "maint" so that it can be easily backported.
Thanks for the report!
Patrick --- refs.c | 2 +- t/t1460-refs-migrate.sh | 17 +++++++++++++++++ 2 files changed, 18 insertions(+), 1 deletion(-)
diff --git a/refs.c b/refs.c index 0f41b2fd4a..37b8cfb90c 100644 --- a/refs.c +++ b/refs.c @@ -1330,7 +1330,7 @@ int ref_transaction_update_reflog(struct ref_transaction *transaction, assert(err); - flags |= REF_LOG_ONLY | REF_NO_DEREF; + flags |= REF_LOG_ONLY | REF_FORCE_CREATE_REFLOG | REF_NO_DEREF; if (!transaction_refname_valid(refname, new_oid, flags, err)) return -1; diff --git a/t/t1460-refs-migrate.sh b/t/t1460-refs-migrate.sh index f59bc4860f..ceb0c4977d 100755 --- a/t/t1460-refs-migrate.sh +++ b/t/t1460-refs-migrate.sh @@ -224,6 +224,23 @@ do test_commit --date "100003000 +0700" --no-tag -C repo second && test_migration repo "$to_format" ' + + test_expect_success "$from_format -> $to_format: stash is retained" ' + test_when_finished "rm -rf repo" && + git init --ref-format=$from_format repo && + ( + cd repo && + test_commit initial A && + echo foo >A && + git stash push && + echo bar >A && + git stash push && + git stash list >expect.reflog && + test_migration . "$to_format" && + git stash list >actual.reflog && + test_cmp expect.reflog actual.reflog + ) + ' done done --- base-commit: f93ff170b93a1782659637824b25923245ac9dd1 change-id: 20250122-b4-pks-reflog-migration-fix-stash-d1fe7380f84a