From: Brandon Casey <drafnel@xxxxxxxxx>
The previous behavior of the -A option was to retain any previously
packed objects which had become unreferenced, and place them into the newly
created pack file. Since git-gc, when run automatically with the --auto
option, calls repack with the -A option, this had the effect of retaining
unreferenced packed objects indefinitely. To avoid this scenario, the
user was required to run git-gc with the little known --prune option or
to manually run repack with the -a option.
This patch changes the behavior of the -A option so that unreferenced
objects that exist in any pack file being replaced, will be unpacked into
the repository. The unreferenced loose objects can then be garbage collected
by git-gc (i.e. git-prune) based on the gc.pruneExpire setting.
Also add new tests for checking whether unreferenced objects which were
previously packed are properly left in the repository unpacked after
repacking.
Signed-off-by: Brandon Casey <drafnel@xxxxxxxxx>
---
git-repack.sh | 18 +++++++++---
t/t7701-repack-unpack-unreachable.sh | 47 ++++++++++++++++++++++++++++++++++
2 files changed, 60 insertions(+), 5 deletions(-)
create mode 100755 t/t7701-repack-unpack-unreachable.sh
diff --git a/git-repack.sh b/git-repack.sh
index e18eb3f..a0e06ed 100755
--- a/git-repack.sh
+++ b/git-repack.sh
@@ -30,7 +30,7 @@ do
-n) no_update_info=t ;;
-a) all_into_one=t ;;
-A) all_into_one=t
- keep_unreachable=--keep-unreachable ;;
+ keep_unreachable=t ;;
-d) remove_redundant=t ;;
-q) quiet=-q ;;
-f) no_reuse=--no-reuse-object ;;
@@ -78,9 +78,6 @@ case ",$all_into_one," in
if test -z "$args"
then
args='--unpacked --incremental'
- elif test -n "$keep_unreachable"
- then
- args="$args $keep_unreachable"
fi
;;
esac
@@ -130,7 +127,18 @@ then
do
case " $fullbases " in
*" $e "*) ;;
- *) rm -f "$e.pack" "$e.idx" "$e.keep" ;;
+ *)
+ rm -f "$e.idx" "$e.keep"
+ if test -n "$keep_unreachable" &&
+ test -f "$e.pack"
+ then
+ git unpack-objects < "$e.pack" || {
+ echo >&2 "Failed unpacking unreachable objects from redundant pack file $e.pack"
+ exit 1
+ }
+ fi
+ rm -f "$e.pack"
+ ;;
esac
done
)
diff --git a/t/t7701-repack-unpack-unreachable.sh b/t/t7701-repack-unpack-unreachable.sh
new file mode 100755
index 0000000..6a5211f
--- /dev/null
+++ b/t/t7701-repack-unpack-unreachable.sh
@@ -0,0 +1,47 @@
+#!/bin/sh
+
+test_description='git-repack works correctly'
+
+. ./test-lib.sh
+
+test_expect_success '-A option leaves unreachable objects unpacked' '
+ echo content > file1 &&
+ git add . &&
+ git commit -m initial_commit &&
+ # create a transient branch with unique content
+ git checkout -b transient_branch &&
+ echo more content >> file1 &&
+ # record the objects created in the database for file, commit, tree
+ fsha1=$(git hash-object file1) &&
+ git commit -a -m more_content &&
+ csha1=$(git rev-parse HEAD^{commit}) &&
+ tsha1=$(git rev-parse HEAD^{tree}) &&
+ git checkout master &&
+ echo even more content >> file1 &&
+ git commit -a -m even_more_content &&
+ # delete the transient branch
+ git branch -D transient_branch &&
+ # pack the repo
+ git repack -A -d -l &&
+ # verify objects are packed in repository
+ test 3 = $(git verify-pack -v -- .git/objects/pack/*.idx |
+ grep -e "^$fsha1 " -e "^$csha1 " -e "^$tsha1 " |
+ sort | uniq | wc -l) &&
+ git show $fsha1 &&
+ git show $csha1 &&
+ git show $tsha1 &&
+ # now expire the reflog
+ sleep 1 &&
+ git reflog expire --expire-unreachable=now --all &&
+ # and repack
+ git repack -A -d -l &&
+ # verify objects are retained unpacked
+ test 0 = $(git verify-pack -v -- .git/objects/pack/*.idx |
+ grep -e "^$fsha1 " -e "^$csha1 " -e "^$tsha1 " |
+ sort | uniq | wc -l) &&
+ git show $fsha1 &&
+ git show $csha1 &&
+ git show $tsha1
+'
+
+test_done
--
1.5.5.67.g9a49
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