Moving from clearcase to git. Need to dump history

问题:

I have a clearcase repository and I am planning to move it to git. Is there a way I can dump all the history?

回答1:

In addition to my old answer "ClearCase to Git migration" (2014), and by contrast with the 2016 "Git - ClearCase methodology", I would add (2016):

You need to check:

• the nature of the import (is is a full ClearCase vob) or well defined ClearCase folder you want to imports?
• are you working with ClearCase UCM or non-UCM?
• Do you have some labels (or UCM baselines) in the history of your ClearCase Vob?

Only labelled (or baselined) ClearCase versions can be safely imported into a git repo, as they are similar to git commits.

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The other approach is to actually dump the history (ie not keep it in the new git repo), keep said history in ClearCase (in read-only mode for archive).

Then the solution is simple: go to a ClearCase snapshot view, do a git init ., then git add ., git commit -m "first import".
You can the add a remote (to an empty bare repo), push and you are done.

git remote add origin /url/to/bar/repo
# for instance
git remote add origin https://github.com/<user>/<repo>
# or an internal server to your company
git remote add origin https://mycompany.com/gitlab/<project>/<repo>

git push -u origin master