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    You are at:Home»Linux Tutorials»How to Backup and Restore SVN Repository in Linux

    How to Backup and Restore SVN Repository in Linux

    By RahulApril 5, 20233 Mins Read

    Subversion (SVN) is a widely used version control system that allows developers to track changes to their code and collaborate on projects. An essential aspect of managing an SVN repository is backing up the repository data to prevent data loss and ensure business continuity. This article will guide you through the process of backing up and restoring an SVN repository in Linux using different methods.

    You can also set up your own SVN server on Debian based systems and Redhat based systems.

    Backing up the SVN Repository Using ‘svnadmin dump‘

    The svnadmin dump command is the standard method for creating a backup of an SVN repository. It creates a dump file containing all the repository revisions, which can then be imported into a new repository using the svnadmin load command. The basic syntax of the svnadmin dump command is:

    1
    svnadmin dump [repository_path] > [dump_file]

    Where [repository_path] is the path to the SVN repository, and [dump_file] is the name of the output dump file.

    Example: To create a backup of an SVN repository located at /var/svn/repo:

    svnadmin dump /var/svn/repo > repo_backup.svndump 
    

    Restoring the SVN Repository Using ‘svnadmin load‘

    To restore an SVN repository from a dump file created using the svnadmin dump command, use the svnadmin load command. First, create a new empty repository to import the dump file data. The basic syntax of the svnadmin load command is:

    1
    svnadmin load [new_repository_path] < [dump_file]

    Where [new_repository_path] is the path to the new SVN repository, and [dump_file] is the name of the input dump file.

    Example: To restore an SVN repository from the backup file “repo_backup.svndump” into a new repository located at /var/svn/new_repo:

    svnadmin create /var/svn/new_repo 
    svnadmin load /var/svn/new_repo < repo_backup.svndump 
    

    Incremental Backup Using 'svnadmin dump'

    For large repositories or frequent backups, it is more efficient to create incremental backups containing only the changes made since the last backup. To create an incremental backup, use the svnadmin dump command with the --incremental option and specify the starting revision with the -r option.

    1
    svnadmin dump [repository_path] --incremental -r [start_revision]:[end_revision] > [incremental_dump_file]

    Where [repository_path] is the path to the SVN repository, [start_revision] is the starting revision number, [end_revision] is the ending revision number, and [incremental_dump_file] is the name of the output incremental dump file.

    Example: To create an incremental backup of an SVN repository located at /var/svn/repo, starting from revision 1001:

    svnadmin dump /var/svn/repo --incremental -r 1001:HEAD > repo_incremental_backup.svndump 
    

    Restoring Incremental Backup Using 'svnadmin load'

    To restore an SVN repository from an incremental backup, use the svnadmin load command as you would with a full backup. Note that you must restore the full backup before applying the incremental backup.

    Example: To restore an SVN repository from the incremental backup file "repo_incremental_backup.svndump" into an existing repository located at /var/svn/new_repo:

    svnadmin load /var/svn/new_repo < repo_incremental_backup.svndump 
    

    Compressing Backup Files

    To save disk space, you can compress the dump files generated by the svnadmin dump command. Use a compression tool like gzip or bzip2 to compress the backup file.

    Example: To compress the "repo_backup.svndump" file using gzip:

    gzip repo_backup.svndump 
    

    The compressed file will have a ".gz" extension: "repo_backup.svndump.gz".

    To decompress the compressed backup file before restoring:

    gunzip repo_backup.svndump.gz 
    

    Conclusion

    Backing up and restoring an SVN repository in Linux is a straightforward process using the svnadmin dump and svnadmin load commands. Regularly backing up your SVN repository ensures that your data is protected against loss or corruption. Understanding how to create full and incremental backups, restore repositories, and compress backup files will help you maintain a robust version control system and safeguard your valuable project data.

    backup dump restore subversion svn svnadmin
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    View 4 Comments

    4 Comments

    1. Kalingarajan on October 16, 2021 5:40 pm

      svn dump restore is very slow, how to speed up in ubuntu server.

      Reply
    2. Antti on February 21, 2017 1:15 pm

      Thank you for the straight forward guide! Would you recommend setting up automated backups by using a GUI for managing the SVN repositories? Or is the command line the only suitable option?

      Reply
    3. Santosh on March 25, 2016 10:20 am

      Is there any way, one can import a SVN DUMP of a Project-X into a NODE-X of Project-Y?

      Reply
    4. Vishnu on October 23, 2014 12:22 pm

      How can we add/remove user permission of an SVN repository from a common Password file Eg:(“/etc/svn-auth-conf”?

      Reply

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