llvm dev - Aug 2009 - [LLVMdev] svn down?

On Aug 10, 2009, at 6:40 PM, Erick Tryzelaar wrote:
> On Mon, Aug 10, 2009 at 6:18 PM, Ray Fix<rayfix.ml at gmail.com>
wrote:
>>
>> Hello,
>> I had a question tangentially related to svn.    I am very new to  
>> LLVM.  It
>> seems like a long road to making my own backend, but I am wading  
>> through the
>> documentation and experimenting with the code and having a lot of  
>> fun with
>> it.  I would like to try various experimental things out and also  
>> keep track
>> of the latest changes.  It seems like this is very difficult to do  
>> with svn.
>> Fortunately (or so I thought), last week I found that
http://repo.or.cz/
>>  was
>> hosting a mirror of the repo in git.  This gives me exactly what I  
>> want--the
>> ability to try out things without disturbing anyone but also allows  
>> me to
>> keep current.    I could be wrong about this, but it seems like the  
>> git
>> mirror stopped working about 3 days ago and I wonder it is because  
>> of the
>> server policy change.  I am wondering if using an outside resource  
>> like this
>> frowned upon?  (i.e. considered an abusive practice)  Is there a  
>> better
>> work/learning flow that you can recommend?
>> Thank you,
>> Ray
>
> Hi Ray!
>
> There was an email thread about how to work with git-svn and the llvm
> repository just a couple days ago:
>
>
http://groups.google.com/group/llvm-dev/browse_thread/thread/ec1422325054773f/76f76695f5c0c7df
>
Just to add, we plan on having an official git mirror once we get our  
new llvm.org server. Until then, please consult that email for other  
options.

Once we get our new server, we will re-evaluate these changes in  
policy. For now, they are required to make the svn server responsive  
to the majority of our users.

-Tanya
> It recommended doing this:
>
>    git clone git://github.com/earl/llvm-mirror.git llvm
>    cd llvm
>    git config --add remote.origin.fetch '+refs/remotes/*:refs/ 
> remotes/*'
>    git fetch
>    git svn init https://llvm.org/svn/llvm-project/llvm/trunk
>    git svn rebase --local
>
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On Tuesday 11 August 2009 11:05, Tanya Lattner wrote:
> Just to add, we plan on having an official git mirror once we get our
> new llvm.org server. Until then, please consult that email for other
> options.
Rather than an svn->git mirror, can we consider a git->svn mirror?  That
is, when transferring to the new server, can we take the opportunity to
migrate the official repository to git and provide a mirror for those
who want to use svn?

This would have enormous benefits to third party users.  Right now it is
a royal pain to sync between the official repository and a local
repository containing local changes because svn is simply not designed to do 
it.  svnmerge.py is not a complete solution.  It only solves a very small part 
of the problem.

For various reasons we use svn on our end.  I would like to set up a local 
git-svn mirror here so that I could take advantage of the power of git.  
Unforuntately, One cannot set up a git-svn ---> git-svn workflow.  I've
tried.
The git guys tell me it's impossible.

So I've written an entire toolset that basically provides a poor man's 
distributed source control model on top of svn (svk was not an option here for 
various reasons, not the least of which is that it's danged near impossible
to
build the thing).

With git, all of that goes away because git is designed to operate in a
distributed workflow.

I would argue that with a BSD-like license, the LLVM community has
chosen to encourage such a distributed workflow.  It makes sense to
provide the infrastructure to support it.  The server switch gives us
an opportunity to do that with minimal additional disruption.

Thoughts?

                                 -Dave

On Aug 11, 2009, at 10:03 AM, David Greene wrote:
> On Tuesday 11 August 2009 11:05, Tanya Lattner wrote:
>
>> Just to add, we plan on having an official git mirror once we get our
>> new llvm.org server. Until then, please consult that email for other
>> options.
>
> Rather than an svn->git mirror, can we consider a git->svn mirror?   
> That
> is, when transferring to the new server, can we take the opportunity  
> to
> migrate the official repository to git and provide a mirror for those
> who want to use svn?
No.  We have had extensive discussions about version control systems  
in the past.  The new server migration will be complex enough as it is.

-Chris