From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mark Brown <broonie@sirena.org.uk>
Subject: Re: "git gc" doesn't seem to remove loose objects any more
Date: Mon, 15 Dec 2008 16:12:13 +0000
Message-ID: <20081215161212.GE31145@sirena.org.uk>
References: <808wqhzjl9.fsf@tiny.isode.net> <237967ef0812150538n671c22b8gaf7a7b5dcaf68433@mail.gmail.com> <20081215140834.GA3684@atjola.homenet> <20081215155610.GA11502@mit.edu>
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Cc: Bj?rn Steinbrink <B.Steinbrink@gmx.de>,
	Mikael Magnusson <mikachu@gmail.com>,
	Bruce Stephens <bruce.stephens@isode.com>, git@vger.kernel.org
To: Theodore Tso <tytso@mit.edu>
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On Mon, Dec 15, 2008 at 10:56:10AM -0500, Theodore Tso wrote:
> On Mon, Dec 15, 2008 at 03:08:34PM +0100, Bj?rn Steinbrink wrote:

> > To clarify that a bit more: git gc keeps unreachable objects unpacked,
> > so that git prune can drop them. And git gc invokes git prune so that
> > only unreachable objects older than 2 weeks are dropped.

> To be even more explicit, "git gc" will **unpack** objects that have
> become unreachable and were currently in packs.  As a result, the
> amount of disk space used by a git repository can actually go **up**
> dramatically after a "git gc" operation, which could be surprising for
> someone who is running close to full on their filesystem, deletes a
> number of branches from a tracking repository, and then does a "git
> gc" may get a very unpleasant surprise.

It can also cause things like the "please repack" warning in git gui to
go off.  This is especially unhelpful since they tend to tell you to go
and do a gc to resolve the problem.