Martin Kosek wrote:
Since IPA v2 server already contain predefined groups that may collide
with groups in migrated (IPA v1) server (for example admins, ipausers),
users having colliding group as their primary group may happen to belong
to an unknown group on new IPA v2 server.

Implement --group-overwrite-gid option to overwrite GID of already
existing groups to prevent this issue.

https://fedorahosted.org/freeipa/ticket/1866

For argument's sake, what is the user going to see the first time they run this? I assume they won't think about these duplicate groups and just do the migration. This means that the result may be some users pointing to non-existent GIDs.

If they re-run the migration with this option will it then fix everything up?

I'm wondering if we need a --test argument so people can run the migration w/o writing entries to look for problems like this.

rob

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