On Tue, Sep 08, 2009 at 06:10:05AM -0400, Matt McClure <matthewlmccl...@gmail.com> wrote: > What is the recipe using the marks options to: > > 1. Do an initial export from one VCS; > 2. Import it to another VCS; > 3. Do an incremental export from the first VCS; > 4. Import the incremental changes to the second VCS?
Here is an example. You have a git repo with 2 commits, 6ea71fe7d36cf5b81c2100d97a822ecf0bc04746 and 14b772a0d7cb983ab0c13d672ea89192c460d070. When you use git-fast-export, it will produce something like: ---- commit refs/heads/master mark :1 data X first commit commit refs/heads/master mark :2 data Y second commit from :1 ---- So in the exporter side you store the :1 <-> 6ea71fe7d36cf5b81c2100d97a822ecf0bc04746 and :2 <->14b772a0d7cb983ab0c13d672ea89192c460d070 mapping. Now if you create a third commit in git, let's say e1f8f0cfbef594edd12aba13df8ec53d401ce944, then git-fast-export will produce: ---- commit refs/heads/master mark :3 data Z third commit from :2 ---- And the "from :2" line is because 14b772a0d7cb983ab0c13d672ea89192c460d070 is a parent of e1f8f0cfbef594edd12aba13df8ec53d401ce944, and from the marks file it knows that 14b772a0d7cb983ab0c13d672ea89192c460d070 should be mapped to :2. It's the same on the importer side, just when you do an incremental import, you will need the marks file to know that :2 means for example "r2" in bzr. HTH.
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