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author | Taylor Blau <me@ttaylorr.com> | 2022-05-20 23:18:03 (GMT) |
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committer | Junio C Hamano <gitster@pobox.com> | 2022-05-26 22:48:26 (GMT) |
commit | f9825d1cf752b8d04a3e9193ff6fdb54d09e28a3 (patch) | |
tree | f5f0109b02f912c876eec00f99ceb44625dcee44 /t/t5329-pack-objects-cruft.sh | |
parent | a7d493833fe615211fd329183e59cec08496fb90 (diff) | |
download | git-f9825d1cf752b8d04a3e9193ff6fdb54d09e28a3.zip git-f9825d1cf752b8d04a3e9193ff6fdb54d09e28a3.tar.gz git-f9825d1cf752b8d04a3e9193ff6fdb54d09e28a3.tar.bz2 |
builtin/repack.c: support generating a cruft pack
Expose a way to split the contents of a repository into a main and cruft
pack when doing an all-into-one repack with `git repack --cruft -d`, and
a complementary configuration variable.
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 't/t5329-pack-objects-cruft.sh')
-rwxr-xr-x | t/t5329-pack-objects-cruft.sh | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/t/t5329-pack-objects-cruft.sh b/t/t5329-pack-objects-cruft.sh index 939cdc2..067c50a 100755 --- a/t/t5329-pack-objects-cruft.sh +++ b/t/t5329-pack-objects-cruft.sh @@ -358,4 +358,211 @@ test_expect_success 'expired objects are pruned' ' ) ' +test_expect_success 'repack --cruft generates a cruft pack' ' + git init repo && + test_when_finished "rm -fr repo" && + ( + cd repo && + + test_commit reachable && + git branch -M main && + git checkout --orphan other && + test_commit unreachable && + + git checkout main && + git branch -D other && + git tag -d unreachable && + # objects are not cruft if they are contained in the reflogs + git reflog expire --all --expire=all && + + git rev-list --objects --all --no-object-names >reachable.raw && + git cat-file --batch-all-objects --batch-check="%(objectname)" >objects && + sort <reachable.raw >reachable && + comm -13 reachable objects >unreachable && + + git repack --cruft -d && + + cruft=$(basename $(ls $packdir/pack-*.mtimes) .mtimes) && + pack=$(basename $(ls $packdir/pack-*.pack | grep -v $cruft) .pack) && + + git show-index <$packdir/$pack.idx >actual.raw && + cut -f2 -d" " actual.raw | sort >actual && + test_cmp reachable actual && + + git show-index <$packdir/$cruft.idx >actual.raw && + cut -f2 -d" " actual.raw | sort >actual && + test_cmp unreachable actual + ) +' + +test_expect_success 'loose objects mtimes upsert others' ' + git init repo && + test_when_finished "rm -fr repo" && + ( + cd repo && + + test_commit reachable && + git repack -Ad && + git branch -M main && + + git checkout --orphan other && + test_commit cruft && + # incremental repack, leaving existing objects loose (so + # they can be "freshened") + git repack && + + tip="$(git rev-parse cruft)" && + path="$objdir/$(test_oid_to_path "$tip")" && + test-tool chmtime --get +1000 "$path" >expect && + + git checkout main && + git branch -D other && + git tag -d cruft && + git reflog expire --all --expire=all && + + git repack --cruft -d && + + mtimes="$(basename $(ls $packdir/pack-*.mtimes))" && + test-tool pack-mtimes "$mtimes" >actual.raw && + grep "$tip" actual.raw | cut -d" " -f2 >actual && + test_cmp expect actual + ) +' + +test_expect_success 'cruft packs are not included in geometric repack' ' + git init repo && + test_when_finished "rm -fr repo" && + ( + cd repo && + + test_commit reachable && + git repack -Ad && + git branch -M main && + + git checkout --orphan other && + test_commit cruft && + git repack -d && + + git checkout main && + git branch -D other && + git tag -d cruft && + git reflog expire --all --expire=all && + + git repack --cruft && + + find $packdir -type f | sort >before && + git repack --geometric=2 -d && + find $packdir -type f | sort >after && + + test_cmp before after + ) +' + +test_expect_success 'repack --geometric collects once-cruft objects' ' + git init repo && + test_when_finished "rm -fr repo" && + ( + cd repo && + + test_commit reachable && + git repack -Ad && + git branch -M main && + + git checkout --orphan other && + git rm -rf . && + test_commit --no-tag cruft && + cruft="$(git rev-parse HEAD)" && + + git checkout main && + git branch -D other && + git reflog expire --all --expire=all && + + # Pack the objects created in the previous step into a cruft + # pack. Intentionally leave loose copies of those objects + # around so we can pick them up in a subsequent --geometric + # reapack. + git repack --cruft && + + # Now make those objects reachable, and ensure that they are + # packed into the new pack created via a --geometric repack. + git update-ref refs/heads/other $cruft && + + # Without this object, the set of unpacked objects is exactly + # the set of objects already in the cruft pack. Tweak that set + # to ensure we do not overwrite the cruft pack entirely. + test_commit reachable2 && + + find $packdir -name "pack-*.idx" | sort >before && + git repack --geometric=2 -d && + find $packdir -name "pack-*.idx" | sort >after && + + { + git rev-list --objects --no-object-names $cruft && + git rev-list --objects --no-object-names reachable..reachable2 + } >want.raw && + sort want.raw >want && + + pack=$(comm -13 before after) && + git show-index <$pack >objects.raw && + + cut -d" " -f2 objects.raw | sort >got && + + test_cmp want got + ) +' + +test_expect_success 'cruft repack with no reachable objects' ' + git init repo && + test_when_finished "rm -fr repo" && + ( + cd repo && + + test_commit base && + git repack -ad && + + base="$(git rev-parse base)" && + + git for-each-ref --format="delete %(refname)" >in && + git update-ref --stdin <in && + git reflog expire --all --expire=all && + rm -fr .git/index && + + git repack --cruft -d && + + git cat-file -t $base + ) +' + +test_expect_success 'cruft repack ignores --max-pack-size' ' + git init max-pack-size && + ( + cd max-pack-size && + test_commit base && + # two cruft objects which exceed the maximum pack size + test-tool genrandom foo 1048576 | git hash-object --stdin -w && + test-tool genrandom bar 1048576 | git hash-object --stdin -w && + git repack --cruft --max-pack-size=1M && + find $packdir -name "*.mtimes" >cruft && + test_line_count = 1 cruft && + test-tool pack-mtimes "$(basename "$(cat cruft)")" >objects && + test_line_count = 2 objects + ) +' + +test_expect_success 'cruft repack ignores pack.packSizeLimit' ' + ( + cd max-pack-size && + # repack everything back together to remove the existing cruft + # pack (but to keep its objects) + git repack -adk && + git -c pack.packSizeLimit=1M repack --cruft && + # ensure the same post condition is met when --max-pack-size + # would otherwise be inferred from the configuration + find $packdir -name "*.mtimes" >cruft && + test_line_count = 1 cruft && + test-tool pack-mtimes "$(basename "$(cat cruft)")" >objects && + test_line_count = 2 objects + ) +' + test_done |