Thread (2 messages) 2 messages, 2 authors, 2025-10-27

Re: [PATCH v4 00/10] builtin/maintenance: introduce "geometric" strategy

From: Patrick Steinhardt <hidden>
Date: 2025-10-27 20:05:25

Possibly related (same subject, not in this thread)

On Mon, Oct 27, 2025 at 08:53:22AM -0700, Junio C Hamano wrote:
Patrick Steinhardt [off-list ref] writes:
quoted
Changes in v4:
  - Fix a flaky test because git-repack(1) always decides to rewrite the
    MIDX, even though no packs have changed. This isn't a new issue, and
    other maintenance tasks behave the same. So I decided to punt on it
    for now.
Thanks, but this round raced against 'next', so let me fabricate the
following and queue it instead.
Thanks for doing this!
------- >8 -------
From: Patrick Steinhardt <redacted>
Date: Mon, 27 Oct 2025 09:30:50 +0100
Subject: [PATCH] t7900: fix a flaky test due to git-repack always regenerating .midx
s/.midx/MIDX, as the MIDX file does not have a dot anywhere.
When a supposedly no-op "git repack" runs across a second boundary,
because the command always touches the MIDX file and updates its
timestamp, "ls -l $GIT_DIR/objects/pack/" before and after the
operation can change, which causes such a test to fail.  Only
compare the *.pack files in the directory before and after the
operation to work around this flakyness.
Maybe add something like the following:

    Arguably, git-repack(1) should learn to not rewrite the MIDX in case
    we know it is already up-to-date. But this is not a new problem
    introduced via the new geometric maintenance task, so for now it
    should be good enough to paper over the issue.

But I think this looks good enough already, so please feel free to
ignore. Happy to have my authorship with either of these versions.

Thanks!

Patrick
quoted hunk ↗ jump to hunk
Signed-off-by: Patrick Steinhardt <redacted>
[jc: taken from diff to v4 from v3 that was already merged to 'next']
Signed-off-by: Junio C Hamano <redacted>
---
 t/t7900-maintenance.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/t/t7900-maintenance.sh b/t/t7900-maintenance.sh
index 0d76693fee..614184a097 100755
--- a/t/t7900-maintenance.sh
+++ b/t/t7900-maintenance.sh
@@ -500,9 +500,9 @@ test_expect_success 'geometric repacking task' '
 
 		# Repacking should now cause a no-op geometric repack because
 		# no packfiles need to be combined.
-		ls -l .git/objects/pack >before &&
+		ls -l .git/objects/pack/*.pack >before &&
 		run_and_verify_geometric_pack 1 &&
-		ls -l .git/objects/pack >after &&
+		ls -l .git/objects/pack/*.pack >after &&
 		test_cmp before after &&
 
 		# This incremental change creates a new packfile that only
-- 
2.51.2-678-g0cd646409c
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