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7e52f5660e
When we pack everything into one big pack with "git repack -Ad", any unreferenced objects in to-be-deleted packs are exploded into loose objects, with the intent that they will be examined and possibly cleaned up by the next run of "git prune". Since the exploded objects will receive the mtime of the pack from which they come, if the source pack is old, those loose objects will end up pruned immediately. In that case, it is much more efficient to skip the exploding step entirely for these objects. This patch teaches pack-objects to receive the expiration information and avoid writing these objects out. It also teaches "git gc" to pass the value of gc.pruneexpire to repack (which in turn learns to pass it along to pack-objects) so that this optimization happens automatically during "git gc" and "git gc --auto". Signed-off-by: Jeff King <peff@peff.net> Acked-by: Nicolas Pitre <nico@fluxnic.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
112 lines
3.3 KiB
Bash
Executable file
112 lines
3.3 KiB
Bash
Executable file
#!/bin/sh
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test_description='git repack works correctly'
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. ./test-lib.sh
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fsha1=
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csha1=
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tsha1=
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test_expect_success '-A with -d option leaves unreachable objects unpacked' '
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echo content > file1 &&
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git add . &&
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test_tick &&
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git commit -m initial_commit &&
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# create a transient branch with unique content
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git checkout -b transient_branch &&
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echo more content >> file1 &&
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# record the objects created in the database for file, commit, tree
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fsha1=$(git hash-object file1) &&
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test_tick &&
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git commit -a -m more_content &&
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csha1=$(git rev-parse HEAD^{commit}) &&
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tsha1=$(git rev-parse HEAD^{tree}) &&
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git checkout master &&
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echo even more content >> file1 &&
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test_tick &&
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git commit -a -m even_more_content &&
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# delete the transient branch
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git branch -D transient_branch &&
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# pack the repo
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git repack -A -d -l &&
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# verify objects are packed in repository
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test 3 = $(git verify-pack -v -- .git/objects/pack/*.idx |
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egrep "^($fsha1|$csha1|$tsha1) " |
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sort | uniq | wc -l) &&
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git show $fsha1 &&
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git show $csha1 &&
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git show $tsha1 &&
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# now expire the reflog, while keeping reachable ones but expiring
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# unreachables immediately
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test_tick &&
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sometimeago=$(( $test_tick - 10000 )) &&
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git reflog expire --expire=$sometimeago --expire-unreachable=$test_tick --all &&
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# and repack
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git repack -A -d -l &&
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# verify objects are retained unpacked
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test 0 = $(git verify-pack -v -- .git/objects/pack/*.idx |
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egrep "^($fsha1|$csha1|$tsha1) " |
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sort | uniq | wc -l) &&
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git show $fsha1 &&
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git show $csha1 &&
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git show $tsha1
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'
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compare_mtimes ()
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{
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read tref rest &&
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while read t rest; do
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test "$tref" = "$t" || break
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done
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}
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test_expect_success '-A without -d option leaves unreachable objects packed' '
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fsha1path=$(echo "$fsha1" | sed -e "s|\(..\)|\1/|") &&
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fsha1path=".git/objects/$fsha1path" &&
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csha1path=$(echo "$csha1" | sed -e "s|\(..\)|\1/|") &&
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csha1path=".git/objects/$csha1path" &&
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tsha1path=$(echo "$tsha1" | sed -e "s|\(..\)|\1/|") &&
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tsha1path=".git/objects/$tsha1path" &&
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git branch transient_branch $csha1 &&
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git repack -a -d -l &&
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test ! -f "$fsha1path" &&
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test ! -f "$csha1path" &&
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test ! -f "$tsha1path" &&
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test 1 = $(ls -1 .git/objects/pack/pack-*.pack | wc -l) &&
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packfile=$(ls .git/objects/pack/pack-*.pack) &&
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git branch -D transient_branch &&
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test_tick &&
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git repack -A -l &&
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test ! -f "$fsha1path" &&
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test ! -f "$csha1path" &&
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test ! -f "$tsha1path" &&
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git show $fsha1 &&
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git show $csha1 &&
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git show $tsha1
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'
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test_expect_success 'unpacked objects receive timestamp of pack file' '
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tmppack=".git/objects/pack/tmp_pack" &&
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ln "$packfile" "$tmppack" &&
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git repack -A -l -d &&
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test-chmtime -v +0 "$tmppack" "$fsha1path" "$csha1path" "$tsha1path" \
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> mtimes &&
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compare_mtimes < mtimes
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'
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test_expect_success 'do not bother loosening old objects' '
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obj1=$(echo one | git hash-object -w --stdin) &&
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obj2=$(echo two | git hash-object -w --stdin) &&
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pack1=$(echo $obj1 | git pack-objects .git/objects/pack/pack) &&
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pack2=$(echo $obj2 | git pack-objects .git/objects/pack/pack) &&
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git prune-packed &&
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git cat-file -p $obj1 &&
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git cat-file -p $obj2 &&
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test-chmtime =-86400 .git/objects/pack/pack-$pack2.pack &&
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git repack -A -d --unpack-unreachable=1.hour.ago &&
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git cat-file -p $obj1 &&
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test_must_fail git cat-file -p $obj2
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'
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test_done
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