This document discusses the migration of the Eclipse project from CVS to Git. It describes some of the lessons learned during the process, including setting policies to prevent non-fast-forward merges and reflog retention to prevent history rewrites. Best practices for Git usage are also outlined, such as automatic rebase setup and integration branches. Legal notices for trademarks are also provided.

1. Git migration – lessons learned
Tomasz Żarna
IBM, Eclipse Platform/Orion

2. CVS
● dev.eclipse.org:/cvsroot/eclipse
● 500 modules

3. IP Process

4. OpenUP

5. Releng

6. Git
git://git.eclipse.org/gitroot/platform/...
eclipse.platform.common.git
eclipse.platform.debug.git
eclipse.platform.git
eclipse.platform.releng.maps.git
eclipse.platform.resources.git
eclipse.platform.runtime.git
eclipse.platform.swt.binaries.git
eclipse.platform.swt.git
eclipse.platform.team.git
eclipse.platform.text.git
eclipse.platform.ua.git
eclipse.platform.ui.git

7. IP Process

8. „I have broken the platform-ui git repository”

9. ● 362076 – Better policy to guard [...] our public repos
○ 362358 – denyNonFastforwards
○ 362361 – denyDeletes
○ 362363 – /{userid}/{branch}
○ never GC the centrally stored reflog
○ don't delete tags

10. Good Pratices
● branch.{branch}.rebase = true
● branch.autosetuprebase = always
● commit links
● "integration" branch
● ...

11. Legal Notice
● IBM and the IBM logo are trademarks or registered
trademarks of IBM Corporation, in the United States, other
countries or both.
● Java and all Java-based marks, among others, are
trademarks or registered trademarks of Sun Microsystems
in the United States, other countries or both.
● Eclipse and the Eclipse logo are trademarks of Eclipse
Foundation, Inc.
● Eclipse IP cartoons: http://www.eclipse.
org/projects/dev_process/ip-process-in-cartoons.php
● OpenUP lifecycle diagram is available under EPL v1.0
● Rage comics artwork: http://ragecomics.memebase.com
● Other company, product and service names may be
trademarks or service marks of others.