Re: [BUG?] git remote rm repo nukes local refs for mirror repo

From: Michael J Gruber <git@drmicha.warpmail.net>
Date: Oct 14, 2008, 11:34 UTC
Message-ID: <48F483A8.4070103@drmicha.warpmail.net>
In-Reply-To: <alpine.DEB.1.00.0810141131130.22125@pacific.mpi-cbg.de.mpi-cbg.de>

Johannes Schindelin venit, vidit, dixit 14.10.2008 11:32:

Show 17 quoted lines

> Hi,
> 
> On Tue, 14 Oct 2008, Michael J Gruber wrote:
> 
>> I just noticed the hard way that "git remote rm repo" nukes all local 
>> (mirrored) refs if repo had been setup with "git remote add --mirror 
>> repo url".
>>
>> Some may argue that this behaviour fits the description "deletes all 
>> remote tracking branches" but I would claim it does not: mirrored 
>> branches are not remote tracking branches in the proper sense.
> 
> Count me into the former group.  If you set up a "--mirror" repository, it 
> defeats the purpose to mix that with _true_ local branches.
> 
> I'd color this a pilot error,
> Dscho

OK, I'll give some background about the motivation:

I have a "local" repo. I want to create a "backup repo" which contains the same branches (including proper remotes, svn remotes).

So, I create an empty bare repo somewhere (say store:backuprepo.git), and in the local repo I do:

git remote add --mirror backup store:backuprepo.git git push backup

I need "mirror=true" because otherwise branches are not created automatically (on push) on the remote side. I need the '+refs/*:refs/*' refspec because otherwise not all refs are mirrored. But now I can't use "git remote rm backup" to remove the configuration because that would take away all my local branches, too.

Instead, I could set up things with

git remote add backup store:backuprepo.git git config remote.backup.push '+refs/*:refs/*'

Then all branches are mirrored on the remote automatically. But interesting things happen after fetch and push... Read "recursion". So, in order to avoid any remote/backup/foo branches on the local side I would have to use

git remote add backup store:backuprepo.git git config remote.backup.push '+refs/*:refs/*' git config --unset remote.backup.fetch

in order to create a "backup remote" configuration. Maybe I'm just being dense (which is actually OK for a functional analyst); I'd be happy about any more direct solution. At least I think there should be one, a backup bare remote mirror is a common use case, and the config massaging above is not something to recommend to novice users.

Michael

P.S.: Yeah I know, git's no backup tool, there's rsync... ;)