Test GitLab migration scripts

Retrieve and test the migration scripts.

Plan:

• Test migration

• Ask for help by email if needed

• Report status in [1]

• Follow up to Frank Duncan and Karl Fogel by email

• Waiting for feedback

• #4064 (closed): Trigger new migration run with fixes (crashes)

• Status meeting

• w/ olasd, ardumont: #4320 (closed): Upgrade gitlab

• w/ olasd, ardumont: Clean up gitlab state

• w/ olasd, ardumont: Trigger new migration run with fixes (running on bespin) for one repository

• Analyse and troubleshoot and fix problems (latest one: #4064 (closed))

• Trigger back migration from scratch one repository

• #4064 (closed): Trigger back migration with another private repository

• #4064 (closed): Trigger with remaining sysadm repositories

• Optimization (use http request pipelining)

• #4064 (closed): Successful run without human attendance

• Analysis

• [1] https://hedgedoc.softwareheritage.org/ezUtxkTDSJ-JBLARYrWIjA?view

Extra:

• What to do with local patches to make the migration work? Propose upstream?

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Migrated from T4064 (view on Phabricator)