SVN autobackup restore

words by Brian Racer

I have been using Doug Hellman’s useful svnautobackup script for our subversion backups. I think it is a pretty useful script, but it only focuses on backups and not restoration.

During a recent server upgrade I needed to restore a large amount of repositories from our dumpfiles. I made the following shell script in php that will loop through all of the backup dumps and restore them. There is a similar tool that uses ruby, but it can only restore one repository and I do not know enough ruby to modify it :) 

#!/usr/bin/php -q
<?php 
// edit this
$repo_dir = '/svn/';
$backup_dir = '/home/backup/svn/';
 
// don't edit this
foreach(new DirectoryIterator($backup_dir) as $file)
{ 
  if(isDir() && !$file->isDot())
  {
    // get files
    $dumpfiles = glob($backup_dir.$file.'/dumpfile*.bzip2');
    // sort them
    natsort($dumpfiles);
 
    // create the repo if not exists
    if(!is_dir($repo_dir.$file))
    {
      $cmd =  "svnadmin create {$repo_dir}{$file}";
      system(escapeshellcmd($cmd));
    }
 
    // restore dump files
    foreach($dumpfiles as $dumpfile)
    {
      $cmd = "bzcat {$dumpfile} | svnadmin load {$repo_dir}{$file}";
      system(escapeshellcmd($cmd));
    }
  }
}

For reference, here is the script that runs nightly though cron

#!/bin/bash
 
files=`ls /svn`
for file in $files
do
  if [ -d /svn/$file ]
  then
    mkdir -p $file
    /home/backup/scripts/svnautobackup/svnbackup.sh -v -i 100 --history-file /home/backup/svn/$file-hist --out-dir /home/backup/svn/$file /svn/$file
  fi
done