From: Jakub Narebski Date: Sat, 10 Jan 2009 16:30:39 GMT Subject: Re: [RFC/PATCH 2/3] replace_object: add mechanism to replace objects found in "refs/replace/" Message-ID: In-Reply-To: <7v8wpl4akr.fsf@gitster.siamese.dyndns.org> Junio C Hamano writes: > Christian Couder writes: > > > Yeah, but read_sha1_file is called to read all object files, not just > > commits. So putting the hook there will: > > > > 1) add a lookup overhead when reading any object, > > 2) make it possible to replace any object, > > I actually see (2) as an improvement, and (1) as an associated cost. I just had an idea: we can use this mechanism to better manage large binary files in Git, by using replacements for _blobs_. We want to be able to have two flavours of repository: one with large blobs (media files usually), and one without. We can use stubs in the place of large binary files in 'no-megablobs' flavor, and add contents of those files via refs/replace/* for _blobs_ in 'with-megablobs' flavour. We can control which objects we want to have, and which objects to transfer. What do you think about this (abuse of) an idea? -- Jakub Narebski Poland ShadeHawk on #git