CollabNet VersionOne founded the open source Subversion project more than 10 years ago, and continues to work on improving its capabilities and performance. As part of our product offering, CollabNet VersionOne provides various levels of support —from our community forums to Platinum 24X7 support. Choose a package that's right for you. We have offerings for users that range from small business to enterprise. We offer Service Level Agreements, Phone Support, and easy access to Subversion Experts. The following chart details levels of coverage offerings can easily be customized to fit any specific
business need.
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- The Subversion SCM plugin exports the svn revisions and URLs of the build's subversion modules as environment variables. These are $SVNREVISIONn and $SVNURLn, where n is the 1-based index of the module in the configuration. For backwards compatibility if there's only a single module, its values are also exported as $SVNREVISION and $SVNURL.
- Apache ® Subversion ® 'Enterprise-class centralized version control for the masses' Welcome to subversion.apache.org, the online home of the Apache ® Subversion ® software project. Subversion is an open source version control system. Founded in 2000 by CollabNet, Inc., the Subversion project and software have seen incredible success over the past decade.
- The Apache Subversion project only distributes source code, but a number of third parties provide binary packages for a number of platforms. To find a package for.
Paid Support
CollabNet VersionOne three support programs for Subversion: Silver, Gold, and Platinum on an annual or multi-year subscription basis.
Community Support
CollabNet VersionOne offers and hosts free support for Subversion, including Community forums where people discuss technical questions and best practices.
Why Choose CollabNet VersionOne for Subversion Support
Subversion Founder
Nobody knows more about Subversion than CollabNet VersionOne. We founded the open source project more than 10 years ago, and we continue to demonstrate our commitment to the application and the user community. Project Leaders of Subclipse, AnkhSVN projects are part of our Core Engineering Team. CollabNet VersionOne offers certified binaries, and now with Subversion Edge, we offer a certified stack that includes Apache and ViewVC. We've simplified Subversion installation and configuration. We have the largest active group of Subversion committers on staff.
SVN Committers in our Engineering team for support
Our support team lives and breathes Subversion. We work with the application every day, and we listen to what users have to say. Our commits are meant to continuously improve the code, and allow efficiencies for all users. If you have an issue or bug, there is no resource better qualified to solve it than a CollabNet VersionOne engineer.
Dedicated Subversion Support Team
As part of our service offering, we make available a dedicated support team. In addition, you can purchase our Dedicated Support Advisor service, whereby you receive a dedicated resource to manage all your support issues to resolution.
Global Coverage
No matter where you are, we have a team ready and available to assist you. CollabNet VersionOne has a global presence, with teams in the United States, Europe, China, Japan, Korea, and India.
Certified Subversion Binaries
CollabNet VersionOne recently announced the availability of Subversion Edge, a certified stack that includes Apache and ViewVC. We've simplified Subversion installation and configuration by adding an intuitive web user interface.
All Clients Supported [Subclipse, TortoiseSVN and AnkhSVN]
CollabNet Subversion works with any environment, with any third party tool you choose to use. We support all clients, and you can rest assured that your support engineer will be familiar with all components of your system.
P1 – Point Contact Assigned Until Issue Is Resolved
You will find our SLAs to be aggressive. For any P1 issue, you will be assigned a point of contact to facilitate communication until the issues is resolved to your satisfaction.
System Configuration Check
As an optional service, you can request a system configuration check & get our expert advice on recommended hardware.
Community Resources
Some of our best resources exist in the knowledge base that our community is known and respected for. Have a question, want some advice, need online training? Check out our user forums and see what the community has to offer.
* Apache, Apache Subversion and the Subversion logo are trademarks of the Apache Software Foundation. Subversion® is a registered trademark of the Apache Software Foundation.
-->When moving to Git from another version control system like Subversion (SVN), we generally recommend that you perform a 'tip migration', which migrates just the latest version of the repository contents, without including history. However, many people want to perform a more advanced migration, including history. This guidance will introduce a migration with history.
SVN migrations to Git can vary in complexity, depending on how old the repository is and how many branches were created and merged, and whether you're using regular SVN or close relative like SVK.
It could be simple if:
- You have a new repository
- You have a standard setup of a trunk, branches, and tags directory
It's likely going to be complex if:
- Your team has performed many branching and merging operations
- Your repository follows a non-standard directory setup
- Your directory setup has changed over time
There are several ways to migrate from SVN to Git. The approach outlined in this article is based on using git-svn, a Git extension, which can be used to check out a Subversion repository to a local Git repository and then push changes from the local Git repository back to the Subversion repository. These steps give a detailed overview of the process for migrating from SVN to Git in a Windows environment, without synchronizing back to the original SVN repository. The result will be a bare Git repository for sharing with the rest of your team.
Note
Before you try to migrate your source code from a centralized version control system to Git, be sure that you familiarize yourself with the differences between centralized and distributed version control systems, and plan your team's migration. After you've prepared, you can begin the migration.
The high-level workflow for migrating from SVN to Git is as follows:
- Prepare a migration environment
- Convert the source SVN repository to a local Git repository
- (Optional) Synchronize the local Git repository with any changes from SVN repository while developers continue using SVN
- Push the local Git repository to a remote Git repository hosted on Azure Repos
- Lock SVN repository, synchronize any remaining changes from SVN repository to local Git repository and push final changes to the remote Git repository on Azure Repos
- Developers switch to Git as main source control system
Prepare a migration environment
Configure a migration environment on a local workstation and install the following software:
- git-svn utility (already part of Git)
You will also need to create a Git repository for your organization to host the converted SVN repository, you may follow Create a new Git repo in your project
Convert the source SVN repository to a local Git repository
The goal of this step is to convert the source Subversion repository to a local bare Git repository. A bare Git repository does not have a local working checkout of files that can be changed, instead it only contains the repository's history and the metadata about the repository itself. This is the recommended format for sharing a Git repository via a remote repository hosted on a service like Azure Repos.
Tip
Bare Git repositories are structured differently and given the fact that it doesn't have a working directory prevent direct commit to the repository.
Retrieve a list of all Subversion authors
Subversion just uses the username for each commit, while Git stores both a real name and an email address. By default, the git-svn tool will list the SVN username in the author and email fields. However, you can create a mapping file for SVN users along with their corresponding Git names and emails.
Subversion users
Git users
To extract a list of all SVN users from the root of your local Subversion checkout, run this PowerShell command:
This command will retrieve all the log messages, extract the usernames, eliminate any duplicate usernames, sort the usernames, and place them into a 'authors-transform.txt' file. You can then edit each line in the file to create a mapping of SVN users to a well-formatted Git user. For example, you can map jamal = jamal <jamal> to jamal = Jamal Hartnett <jamal@fabrikam-fiber.com>.
Note
Encoding can be adjusted by appending the -Encoding option to the command above, for instance, OutFile 'authors-transform.txt' -Encoding utf8.
Clone the Subversion repository using git-svn
The following command will do the standard git-svn transformation using the authors-transform.txt file created in the earlier step. It will place the Git repository in the c:mytempdir folder in your local machine.
Note
The --prefix=svn/ is necessary because otherwise the tools can't tell SVN revisions from imported ones. We recommend setting a prefix (with a trailing slash), as your SVN-tracking refs will then be located at refs/remotes/$prefix/, which is compatible with Git's own remote-tracking branch layout (refs/remotes/$remote/).
Subversion Synonyms
Setting a prefix is also useful if you wish to track multiple projects that share a common repository. By default, the prefix is set to origin/.
If you are using the standard trunk, branches, tags layout you'll just put --stdlayout. However, if you have something different you may have to pass the --trunk, --branches, and --tags to find what is what. For example, if your repository structure was trunk/companydir and you branched that instead of trunk, you would probably want --trunk=trunk/companydir --branches=branches.
Note
This command can take a few minutes to several hours depending on the size of the SVN repository. Upon completion, you will have a Git checkout of your repository.
Convert version control-specific configurations
If your SVN repo was using svn:ignore properties, you can convert to a .gitignore file using:
Tip
Read more about .gitignore: Ignore file changes with Git
Push repository to a bare git repository
In this step, you will create a bare repository and make its default branch match SVN's trunk branch name.
Create a bare Git repository
Push the local Git repository to the new bare Git repository
Rename 'trunk' branch to 'master'Your main development branch will be named 'trunk', which matches the name it was in Subversion. You'll want to rename it to Git's standard 'master' branch using:
Clean up branches and tagsgit-svn makes all of Subversions tags into very-short branches in Git of the form 'tags/name'. You'll want to convert all those branches into actual Git tags or delete them.
Migrate SVN tags to be Git tags
Advanced migrations
Create all the SVN branches as proper Git branches
Subversion Definition
While it's easy to create all SVN branches as a proper Git branches, it's recommended that you evaluate the following points before you continue:
Subversion
If there are Feature branches: Can you wait until they integrate to the trunk before migrating?
If there are Release branches: Does it make sense to keep SVN around for servicing? If you migrate feature branches, are you prepared to service branches out of Git?
If you still want to migrate existing branches, run the following PowerShell command:
Note
This command can take a few minutes to several hours depending on the size of the SVN repository. Upon completion, you will have a Git checkout of your repository.
Update your workflow
Moving from a centralized version control system to Git is more than just migrating code. Your team needs training to understand how Git is different from your existing version control system and how these differences affect day-to-day work. Learn more.
Reference information
Authors: Hosam Kamel, William H. Salazar | Find the origin of this article and connect with the ALM | DevOps Rangers here
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