|  | 1 | = Trac Backup = | 
          
            |  | 2 | [[TracGuideToc]] | 
          
            |  | 3 |  | 
          
            |  | 4 | Since Trac uses a database backend, some extra care is required to safely create a backup of a [wiki:TracEnvironment project environment]. Luckily, [wiki:TracAdmin trac-admin] has a command to make backups easier: `hotcopy`. | 
          
            |  | 5 |  | 
          
            |  | 6 | ''Note: Trac uses the `hotcopy` nomenclature to match that of [http://subversion.tigris.org/ Subversion], to make it easier to remember when managing both Trac and Subversion servers.'' | 
          
            |  | 7 |  | 
          
            |  | 8 | == Creating a Backup == | 
          
            |  | 9 |  | 
          
            |  | 10 | To create a backup of a live TracEnvironment, simply run: | 
          
            |  | 11 | {{{ | 
          
            |  | 12 |  | 
          
            |  | 13 | $ trac-admin /path/to/projenv hotcopy /path/to/backupdir | 
          
            |  | 14 |  | 
          
            |  | 15 | }}} | 
          
            |  | 16 |  | 
          
            |  | 17 | [wiki:TracAdmin trac-admin] will lock the database while copying.'' | 
          
            |  | 18 |  | 
          
            |  | 19 | The resulting backup directory is safe to handle using standard file-based backup tools like `tar` or `dump`/`restore`. | 
          
            |  | 20 |  | 
          
            |  | 21 | Please, note, that hotcopy command does not overwrite target directory and when such exists, hotcopy ends with error: `Command failed: [Errno 17] File exists:` This is discussed in [trac:ticket:3198 #3198]. | 
          
            |  | 22 |  | 
          
            |  | 23 | === Restoring a Backup === | 
          
            |  | 24 |  | 
          
            |  | 25 | Backups are simply a copied snapshot of the entire [wiki:TracEnvironment project environment] directory, including the SQLite database. | 
          
            |  | 26 |  | 
          
            |  | 27 | To restore an environment from a backup, stop the process running Trac (i.e. the Web server or [wiki:TracStandalone tracd]), restore the contents of your backup (path/to/backupdir) to your [wiki:TracEnvironment project environment] directory and restart the service. | 
          
            |  | 28 |  | 
          
            |  | 29 | ---- | 
          
            |  | 30 | See also: TracAdmin, TracEnvironment, TracGuide, [trac:TracMigrate TracMigrate] |