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Date:      Thu, 20 Dec 2012 15:26:43 -0800
From:      Alfred Perlstein <bright@mu.org>
To:        current@FreeBSD.org
Subject:   Re: HEADS UP: FreeBSD git mirrors demoted to beta status, need your help
Message-ID:  <50D39EB3.2050403@mu.org>
In-Reply-To: <20121215132246.GH69724@acme.spoerlein.net>
References:  <20121215132246.GH69724@acme.spoerlein.net>

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Ulrich,

Are you still hoping for feedback on this?

If so I am currently setting up to run your scripts from:
http://wiki.freebsd.org/GitWorkflow#History

Let me know if that is not needed though because if I don't need to then 
I can save myself a bunch of work.

I'll report back to you on my success or not.

-Alfred

On 12/15/12 5:22 AM, Ulrich Spörlein wrote:
> Bad news everyone,
>
> tl;dr The git mirror of the source repository needs to be re-rolled to
> make the conversion deterministically repeatable, this will change
> pretty much all git commit hashes.
>
> The re-roll will be done January 15, 2013.
>
> Not affected are the ports and doc repositories, nor is the svn_head
> (for use with git-svn) affected.
>
>
> Background
>
> The converter (svn2git) was handing commits and objects to git's
> fast-import in arbitrary order, this makes merge commits have an
> arbitrary order of their parent commits and thus these merge commits
> have changing commit hashes for each converter run.
>
> This has been fixed, but requires us to move all the branches over to
> this deterministic scheme, which will change all their commit hashes.
> None of the contents of these commits change, so rebasing/remerging your
> work into these branches is possible without running into any merge
> conflicts.
>
>
> We need your help
>
> A goal of these conversions is to have them repeatable by you (yes,
> you!), so the correctness of the conversion can be verified. There are
> also no backups of the conversion runs, as they should be repeatable
> anyway.
>
> We need 2-3 volunteers to run these conversions themselves and verify
> that the produced commit hashes match the published ones. The necessary
> steps to do this are documented on the Wiki under
>
>     http://wiki.freebsd.org/GitWorkflow#History
>
> Please send me your output of git show-ref in a private mail, thanks.
>
> Cheers,
> Uli
>
> PS: This re-roll has nothing to do with the recent security incident.




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