I'm trying to convert my SVN Repository into a GIT repository. The problem with this is, that in the SVN there are several active branches for different software versions maintained in parallel. So the SVN setup looks somthing like this:
SVN ROOT
|- trunk
|- branches
| |- v1
| |- v2
| |- v3
|- tags
| |- v1
| | |- 0
| | |- 1
| |- v2
...
Now I want to create a GIT repository with a branch for each of the branches of the SVN. Creating the repository and porting the tags is not a problem at all. I'm doing a
git svn init -s --tags=tags/v1 --tags=tags/v2 <REPO_URL>
# modified .git/config to use tags/v1/* for the tags of the different versions
git svn fetch
and after this I get the branches as desired and I'm able to check out the different software versions by using
git checkout -b v1 origin/v1
The Problem is that the SVN Repository is verry old and the different branches all branch from the trunk. But my development requires me to fix a bug in v1, merge it to v2 as well and dcommit everything back to SVN.
So my question is what's the best way to get clean (mergable / rebaseable) GIT branches? And how should the workflow with this be? Should I add a new branch for each version in GIT, let's say svn_v1, rebase the v1 into this and then dcommit from there? Or what's the best way to get the commit back to SVN?
EDIT:
I've already tried to rebase the different branches according to the merge upstream (e.g. rebased v2 onto v1 and trunk onto v2) but this messed up my histroy and when trying to dcommit it wanted to commit all the commits that I've rebased on top of the current history. This would make the SVN history messy as these commits already are in the Repo.
EDIT2:
To make the problem more clear. Imageine the following history:
D--E--F v1 K--L--M v2
/ /
A--B--C--G--H--I--J--N trunk
^
|
introduced a bug
As commit B
introduced a bug, all branches v1
, v2
, and trunk
are affected. The policy of my company is now (in SVN) to fix this issue in the lowest affected branch (v1
in this case) and then merge the commit through the
branches up to trunk
.
How does the workflow look like to do the same thing in GIT, such that in SVN the commit in v1
is marked as being merged into v2
?
Ok, I've finally managed to solve this issue myself.
I've solved this in two steps: First of all, as our code bases for v1
and v2
are good (building and working, both with the known bugs fixed), I've recorded a merge of the v1
branch into the v2
branch and v2
into trunk
in svn
.
Now I am able to merge the branches in git
. Then I've found this passage in the git-svn
docs:
config key: svn.pushmergeinfo
This option will cause git-svn to attempt to automatically populate the svn:mergeinfo property in the SVN repository when possible. Currently, this can only be done when dcommitting non-fast-forward merges where all parents but the first have already been pushed into SVN.
So I've enabled this config value
git config svn.pushmergeinfo true
and now, if a new bug is found, I'm fixing it in the lowest version that has this bug, dcommit
it to svn
, and afterwards merge it into the next version using the --no-ff
option. If I dcommit
now from there, the mergeinfos in svn
get updated and everything is ok.