From: Junio C Hamano <gitster@pobox.com>
Date: Tue, 24 Feb 2015 22:26:08 GMT
Subject: Re: gc.linkedobjectdir discussion
Message-ID: <xmqqsidvosjj.fsf@gitster.dls.corp.google.com>
In-Reply-To: <CAFwrLX7AVbhbP-Ha3Vag+7o5a-8fSaQxxx+z0DRurdzY-pBwkQ@mail.gmail.com>

Will Entriken <fulldecent@gmail.com> writes:

> USAGE - CACHE HIT:
> During another pull or clone on a different working directory, git
> will find the required object in LINKEDOBJECTDIR and hard link into
> the active repo's object store.

What happens when the necessary objects are in a packfile, mixed
with other objects that this repository does not need but may be
necessary for other repositories?

> USAGE - DELETING:
> Whenever deleting an object, git will stat the file to see to see if
> its link count is 2, if so, both copies are deleted.

This is totally unworkable if you ever pack your repository.  And
packing loose objects is a lot more efficient way to reduce your
disk footprint than sharing the object store among a handful of
repositories.