Shawn O. Pearce wrote:
Brandon Casey <casey@xxxxxxxxxxxxxxx> wrote:
The docs (git-repack.txt) seem to suggest that git-repack (without -d)
does not delete any objects. And if -d is used, then at most objects
already referenced in other packs will be deleted. This makes me think
that repack is safe on the source repository.
You are correct that leaving off the '-d' won't delete objects.
But a pack is created by listing the objects we need, and if we don't
need the object in source, we don't include it into the new pack.
-a -d implies delete all packs that existed when we started the
repack. So if an object was in the old packfile, and we didn't
copy it to the new packfile, it gets deleted. ;-)
Ok. There is the connection I did not make. repack -d is NOT harmless,
since a pack that contains only objects referenced in other packs and
dangling unreferenced objects, will be deleted. Which will be all of the
preexisting packs in the case of git-gc since as you mentioned it
repacks using -a -d -l.
Thanks for taking the time.
-brandon
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