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![Johannes Schindelin](/assets/img/avatar_default.png)
The only reason we did not call "prune" in git-gc was that it is an inherently dangerous operation: if there is a commit going on, you will prune loose objects that were just created, and are, in fact, needed by the commit object just about to be created. Since it is dangerous, we told users so. That led to many users not even daring to run it when it was actually safe. Besides, they are users, and should not have to remember such details as when to call git-gc with --prune, or to call git-prune directly. Of course, the consequence was that "git gc --auto" gets triggered much more often than we would like, since unreferenced loose objects (such as left-overs from a rebase or a reset --hard) were never pruned. Alas, git-prune recently learnt the option --expire <minimum-age>, which makes it a much safer operation. This allows us to call prune from git-gc, with a grace period of 2 weeks for the unreferenced loose objects (this value was determined in a discussion on the git list as a safe one). If you want to override this grace period, just set the config variable gc.pruneExpire to a different value; an example would be [gc] pruneExpire = 6.months.ago or even "never", if you feel really paranoid. Note that this new behaviour makes "--prune" be a no-op. While adding a test to t5304-prune.sh (since it really tests the implicit call to "prune"), also the original test for "prune --expire" was moved there from t1410-reflog.sh, where it did not belong. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
82 lines
1.9 KiB
Bash
82 lines
1.9 KiB
Bash
#!/bin/sh
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#
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# Copyright (c) 2008 Johannes E. Schindelin
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#
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test_description='prune'
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. ./test-lib.sh
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test_expect_success setup '
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: > file &&
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git add file &&
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test_tick &&
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git commit -m initial &&
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git gc
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'
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test_expect_success 'prune stale packs' '
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orig_pack=$(echo .git/objects/pack/*.pack) &&
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: > .git/objects/tmp_1.pack &&
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: > .git/objects/tmp_2.pack &&
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test-chmtime -86501 .git/objects/tmp_1.pack &&
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git prune --expire 1.day &&
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test -f $orig_pack &&
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test -f .git/objects/tmp_2.pack &&
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! test -f .git/objects/tmp_1.pack
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'
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test_expect_success 'prune --expire' '
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before=$(git count-objects | sed "s/ .*//") &&
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BLOB=$(echo aleph | git hash-object -w --stdin) &&
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BLOB_FILE=.git/objects/$(echo $BLOB | sed "s/^../&\//") &&
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test $((1 + $before)) = $(git count-objects | sed "s/ .*//") &&
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test -f $BLOB_FILE &&
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git prune --expire=1.hour.ago &&
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test $((1 + $before)) = $(git count-objects | sed "s/ .*//") &&
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test -f $BLOB_FILE &&
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test-chmtime -86500 $BLOB_FILE &&
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git prune --expire 1.day &&
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test $before = $(git count-objects | sed "s/ .*//") &&
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! test -f $BLOB_FILE
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'
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test_expect_success 'gc: implicit prune --expire' '
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before=$(git count-objects | sed "s/ .*//") &&
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BLOB=$(echo aleph_0 | git hash-object -w --stdin) &&
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BLOB_FILE=.git/objects/$(echo $BLOB | sed "s/^../&\//") &&
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test $((1 + $before)) = $(git count-objects | sed "s/ .*//") &&
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test -f $BLOB_FILE &&
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test-chmtime -$((86400*14-30)) $BLOB_FILE &&
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git gc &&
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test $((1 + $before)) = $(git count-objects | sed "s/ .*//") &&
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test -f $BLOB_FILE &&
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test-chmtime -$((86400*14+1)) $BLOB_FILE &&
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git gc &&
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test $before = $(git count-objects | sed "s/ .*//") &&
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! test -f $BLOB_FILE
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'
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test_expect_success 'gc: refuse to start with invalid gc.pruneExpire' '
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git config gc.pruneExpire invalid &&
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test_must_fail git gc
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'
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test_expect_success 'gc: start with ok gc.pruneExpire' '
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git config gc.pruneExpire 2.days.ago &&
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git gc
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'
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test_done
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