Re: Switch from svn to git and modify repo completely

From: Matthias Fechner <idefix@fechner.net>
Date: Nov 27, 2011, 10:56 UTC
Message-ID: <4ED21756.70705@fechner.net>
In-Reply-To: <20111121070247.GA16708@elie.hsd1.il.comcast.net>

Am 21.11.2011 08:02, schrieb Jonathan Nieder:

Show 9 quoted lines

> The section "CHECKLIST FOR SHRINKING A REPOSITORY" from the
> git-filter-branch(1) manual page has some hints.  In particular, "git
> clone --no-hardlinks" still _copies_ all objects --- you probably
> would want "git clone file://$(pwd)/repo-orig" to make sure the
> ordinary transfer negotiation kicks in.
> 
> It's very important that the documentation not be misleading, so if
> you can point to places where the wording can be less confusing, that
> would be very welcome.

it would be fantastic if exactly this information is noted in the manual. For me it is not really clear what is the difference between a git clone with and without --no-hardlinks.

I was now able to convert my svn repo to a git repo and split the new git repo in several different ones, including the complete history.

Here a short summary for all how need to do the same. At first convert the svn into a git reposity: git svn clone file:///path/to/svn -A authors -s gitrepo.git

To create the authors file, check the man page.

To get a list of all files: git show --pretty="format:" --name-only startrev..endrev | sort | uniq

Maybe you want to remove some branches from the repo because svn users used it in a completely wrong way: git branch -rd badbranch

Now clone the repo and remove files from it you do not want anymore: git clone gitrepo.git tofilter.git cd tofilter.git git filter-branch -f --tree-filter 'rm -Rf file1 file2.bla dir1 \ projekt1/dir2' --prune-empty -- --all git gc cd ..

Repeat this step for all combination you need.

Now create a bare repository and enable some options to use it as a central repo: git clone --bare tofilter.git tofilter_bare.git cd tofilter_bare.git git config core.sharedRepository 1 git config receive.denyNonFastForwards true git gc cd ..

Now you can copy the repo to the target server/directory and clone it from there.

Bye Matthias

-- 
"Programming today is a race between software engineers striving to
build bigger and better idiot-proof programs, and the universe trying to
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