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2014-06-25Merge branch 'jk/repack-pack-writebitmaps-config'Libravatar Junio C Hamano1-2/+2
* jk/repack-pack-writebitmaps-config: t7700: drop explicit --no-pack-kept-objects from .keep test repack: introduce repack.writeBitmaps config option repack: simplify handling of --write-bitmap-index pack-objects: stop respecting pack.writebitmaps
2014-06-25Merge branch 'jk/repack-pack-keep-objects'Libravatar Junio C Hamano1-2/+18
Recent updates to "git repack" started to duplicate objects that are in packfiles marked with .keep flag into the new packfile by mistake. * jk/repack-pack-keep-objects: repack: s/write_bitmap/&s/ in code repack: respect pack.writebitmaps repack: do not accidentally pack kept objects by default
2014-06-12t7700: drop explicit --no-pack-kept-objects from .keep testLibravatar Jeff King1-1/+1
We want to make sure that the default behavior of git-repack, without any options, continues to treat .keep files as it always has. Adding an explicit --no-pack-kept-objects, as ee34a2b did, is a much less interesting test, and prevented us from noticing the bug fixed by 64d3dc9 (repack: do not accidentally pack kept objects by default, 2014-06-10). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-06-10repack: introduce repack.writeBitmaps config optionLibravatar Jeff King1-1/+1
We currently have pack.writeBitmaps, which originally operated at the pack-objects level. This should really have been a repack.* option from day one. Let's give it the more sensible name, but keep the old version as a deprecated synonym. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-06-10repack: respect pack.writebitmapsLibravatar Jeff King1-1/+17
The config option to turn on bitmaps is read all the way down in the plumbing of pack-objects. This makes it hard for other options in the porcelain of repack to make decisions based on the bitmap setting. For example, repack.packKeptObjects tries to kick in by default only when bitmaps are turned on. But it can't do so reliably because it doesn't yet know whether we are using bitmaps. This patch teaches repack to respect pack.writebitmaps. It means we pass a redundant command-line flag to pack-objects, but that's OK; it shouldn't affect the outcome. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-06-10repack: do not accidentally pack kept objects by defaultLibravatar Jeff King1-1/+1
Commit ee34a2b (repack: add `repack.packKeptObjects` config var, 2014-03-03) added a flag which could duplicate kept objects, but did not mean to turn it on by default. Instead, the option is tied by default to the decision to write bitmaps, like: if (pack_kept_objects < 0) pack_kept_objects = write_bitmap; after which we expect pack_kept_objects to be a boolean 0 or 1. However, that assignment neglects that write_bitmap is _also_ a tri-state with "-1" as the default, and with neither option given, we accidentally turn the option on. This patch is the minimal fix to restore the desired behavior for the default state. Further patches will fix the more complicated cases. Note the update to t7700. It failed to turn on bitmaps, meaning we were actually confirming the wrong behavior! Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-03-18Merge branch 'jk/repack-pack-keep-objects'Libravatar Junio C Hamano1-1/+17
* jk/repack-pack-keep-objects: repack: add `repack.packKeptObjects` config var
2014-03-03repack: add `repack.packKeptObjects` config varLibravatar Jeff King1-1/+17
The git-repack command always passes `--honor-pack-keep` to pack-objects. This has traditionally been a good thing, as we do not want to duplicate those objects in a new pack, and we are not going to delete the old pack. However, when bitmaps are in use, it is important for a full repack to include all reachable objects, even if they may be duplicated in a .keep pack. Otherwise, we cannot generate the bitmaps, as the on-disk format requires the set of objects in the pack to be fully closed. Even if the repository does not generally have .keep files, a simultaneous push could cause a race condition in which a .keep file exists at the moment of a repack. The repack may try to include those objects in one of two situations: 1. The pushed .keep pack contains objects that were already in the repository (e.g., blobs due to a revert of an old commit). 2. Receive-pack updates the refs, making the objects reachable, but before it removes the .keep file, the repack runs. In either case, we may prefer to duplicate some objects in the new, full pack, and let the next repack (after the .keep file is cleaned up) take care of removing them. This patch introduces both a command-line and config option to disable the `--honor-pack-keep` option. By default, it is triggered when pack.writeBitmaps (or `--write-bitmap-index` is turned on), but specifying it explicitly can override the behavior (e.g., in cases where you prefer .keep files to bitmaps, but only when they are present). Note that this option just disables the pack-objects behavior. We still leave packs with a .keep in place, as we do not necessarily know that we have duplicated all of their objects. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-01-23t7700: do not use "touch" unnecessarilyLibravatar Jeff King1-1/+1
Some versions of touch (such as /usr/ucb/touch on Solaris) do not know about the "-r" option. This would make sense as a feature of test-chmtime, but fortunately this fix is even easier. The test does not care about the timestamp of the .keep file it creates at all, only that it exists. For such a use case, with or without portability issues around "-r", "touch" should not be used in the first place. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-11-09tests: add missing &&, batch 2Libravatar Jonathan Nieder1-3/+3
Same rules as before: this patch only adds " &&" to the end of some lines in the test suite. Intended to be applied on top of or squashed with the last batch if they look okay. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-04-17more war on "sleep" in testsLibravatar Junio C Hamano1-3/+6
Two more tests that sleep only to waste tick can be converted to use test_tick and take expiry parameters relative to $test_tick. The basic idea is to replace "sleep 1" with "test_tick" to cause the "time" to pass. These tests are interested in expiring things with "now" as the timestamp, soo use a timestamp relative to $test_tick to give them more stability and reproducibility. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-07-24git repack: keep commits hidden by a graftLibravatar Johannes Schindelin1-1/+1
When you have grafts that pretend that a given commit has different parents than the ones recorded in the commit object, it is dangerous to let 'git repack' remove those hidden parents, as you can easily remove the graft and end up with a broken repository. So let's play it safe and keep those parent objects and everything that is reachable by them, in addition to the grafted parents. As this behavior can only be triggered by git pack-objects, and as that command handles duplicate parents gracefully, we do not bother to cull duplicated parents that may result by using both true and grafted parents. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-07-23Add a test showing that 'git repack' throws away grafted-away parentsLibravatar Björn Steinbrink1-0/+12
Signed-off-by: Björn Steinbrink <B.Steinbrink@gmx.de> Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-25t7700-repack: repack -a now works properly, expect success from testLibravatar Brandon Casey1-1/+1
Since the recent rework of the object listing mechanism of pack-objects/rev-list, git-repack now properly packs objects from alternate repositories even when the local repository contains packs. Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-01Merge branch 'jc/maint-1.6.0-keep-pack'Libravatar Junio C Hamano1-0/+61
* jc/maint-1.6.0-keep-pack: pack-objects: don't loosen objects available in alternate or kept packs t7700: demonstrate repack flaw which may loosen objects unnecessarily Remove --kept-pack-only option and associated infrastructure pack-objects: only repack or loosen objects residing in "local" packs git-repack.sh: don't use --kept-pack-only option to pack-objects t7700-repack: add two new tests demonstrating repacking flaws Conflicts: t/t7700-repack.sh
2009-03-21pack-objects: don't loosen objects available in alternate or kept packsLibravatar Brandon Casey1-1/+1
If pack-objects is called with the --unpack-unreachable option then it will unpack (i.e. loosen) all unreferenced objects from local not-kept packs, including those that also exist in packs residing in an alternate object database or a locally kept pack. The only user of this option is git-repack. In this case, repack will follow the call to pack-objects with a call to prune-packed, which will delete these newly loosened objects, making the act of loosening a waste of time. The unnecessary loosening can be avoided by checking whether an object exists in a non-local pack or a locally kept pack before loosening it. This fixes the 'local packed unreachable obs that exist in alternate ODB are not loosened' test in t7700. Signed-off-by: Brandon Casey <drafnel@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-21t7700: demonstrate repack flaw which may loosen objects unnecessarilyLibravatar Brandon Casey1-0/+17
If an unreferenced object exists in both a local pack and in either a pack residing in an alternate object database or a local kept pack, then the pack-objects call made by repack will loosen that object only to have it immediately pruned by repack's call to prune-packed. Signed-off-by: Brandon Casey <drafnel@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-20pack-objects: only repack or loosen objects residing in "local" packsLibravatar Brandon Casey1-1/+1
These two features were invented for use by repack when repack will delete the local packs that have been made redundant. The packs accessible through alternates are not deleted by repack, so the objects contained in them are still accessible after the local packs are deleted. They do not need to be repacked into the new pack or loosened. For the case of loosening they would immediately be deleted by the subsequent prune-packed that is called by repack anyway. This fixes the test 'packed unreachable obs in alternate ODB are not loosened' in t7700. Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-20git-repack.sh: don't use --kept-pack-only option to pack-objectsLibravatar Brandon Casey1-1/+1
The --kept-pack-only option to pack-objects treats all kept packs as equal. This results in objects that reside in an alternate pack that has a .keep file, not being packed into a newly created pack when the user specifies the -a option to repack. Since the user may not have any control over the alternate database, git should not refrain from repacking those objects even though they are in a pack with a .keep file. This fixes the 'packed obs in alternate ODB kept pack are repacked' test in t7700. Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-20t7700-repack: add two new tests demonstrating repacking flawsLibravatar Brandon Casey1-0/+44
1) The new --kept-pack-only mechansim of rev-list/pack-objects has replaced --unpacked=. This new mechansim does not operate solely on "local" packs now. The result is that objects residing in an alternate pack which has a .keep file will not be repacked with repack -a. This flaw is only apparent when a commit object is the one residing in an alternate kept pack. 2) The 'repack unpacked objects' and 'loosen unpacked objects' mechanisms of pack-objects, i.e. --keep-unreachable and --unpack-unreachable, now do not operate solely on local packs. The --keep-unreachable option no longer has any callers, but --unpack-unreachable is used when repack is called with '-A -d' and the local repo has existing packs. In this case, objects residing in alternate, not-kept packs will be loosened, and then immediately deleted by repack's call to prune-packed. The test must manually call pack-objects to avoid the call to prune-packed that is made by repack when -d is used. Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-17t7700: demonstrate misbehavior of 'repack -a' when local packs existLibravatar Brandon Casey1-0/+19
The ability to "...fatten [the] local repository by packing everything that is needed by the local ref into a single new pack, including things that are borrowed from alternates"[1] is supposed to be provided by the '-a' or '-A' options to repack when '-l' is not used, but there is a flaw. For each pack in the local repository without a .keep file, repack supplies a --unpacked=<pack> argument to pack-objects. The --unpacked option to pack-objects, with or without an argument, causes pack-objects to ignore any object which is packed in a pack not mentioned in an argument to --unpacked=. So, if there are local packs, and 'repack -a' is called, then any objects which reside in packs accessible through alternates will _not_ be packed. If there are no local packs, then no --unpacked argument will be supplied, and repack will behave as expected. [1] http://mid.gmane.org/7v8wrwidi3.fsf@gitster.siamese.dyndns.org Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-11-12t7700: test that 'repack -a' packs alternate packed objectsLibravatar Brandon Casey1-0/+16
Previously, when 'repack -a' was called and there were no packs in the local repository without a .keep file, the repack would fall back to calling pack-objects with '--unpacked --incremental'. This resulted in the created pack file, if any, to be missing the packed objects in the alternate object store. Test that this specific case has been fixed. Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-11-12pack-objects: extend --local to mean ignore non-local loose objects tooLibravatar Brandon Casey1-1/+1
With this patch, --local means pack only local objects that are not already packed. Additionally, this fixes t7700 testing whether loose objects in an alternate object database are repacked. Signed-off-by: Brandon Casey <drafnel@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-11-12t7700: demonstrate mishandling of loose objects in an alternate ODBLibravatar Brandon Casey1-0/+19
Loose objects residing in an alternate object database should not be packed when the -l option to repack is used. Signed-off-by: Brandon Casey <drafnel@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-11-12repack: don't repack local objects in packs with .keep fileLibravatar Brandon Casey1-1/+1
If the user created a .keep file for a local pack, then it can be inferred that the user does not want those objects repacked. This fixes the repack bug tested by t7700. Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-11-12t7700: demonstrate mishandling of objects in packs with a .keep fileLibravatar Brandon Casey1-0/+38
Objects residing in pack files that have an associated .keep file are not supposed to be repacked into new pack files, but they are. Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil> Signed-off-by: Junio C Hamano <gitster@pobox.com>