http://blog.leanote.com/post/gua_l/hotcopy

hotcopy Description

This subcommand makes a full “hot” backup of your repository, including all hooks, configuration files, and, of course, database files. If you pass the --clean-logs option, svnadminwill perform a hot copy of your repository, and then remove unused Berkeley DB logs from the original repository. You can run this command at any time and make a safe copy of the repository, regardless of whether other processes are using the repository. svnadmin hotcopy --help

Make a hot copy of a repository.

If --incremental is passed, data which already exists at the destination is not copied again. Incremental mode is implemented for FSFS repositories.

Valid options:

--clean-logs : remove redundant Berkeley DB log files from source repository [Berkeley DB]

--incremental : dump or hotcopy incrementall // 增量

http://svnbook.red-bean.com/en/1.7/svn.ref.svnadmin.c.hotcopy.html

http://blog.leanote.com/post/gua_l/hotcopy

用法

svnadmin hotcopy <Depot_Path> <Backup_Path >  --clean-logs --incremental  

cd /var/svn/svn_dir
svnlook youngest backup
svnlook youngest QA_script
svnadmin hotcopy /var/svn/svn_dir/QA_script /var/svn/svn_dir/backup --clean-logs --incremental
svnlook youngest backup  

注意

• svnadmin hotcopy 后，目标路径会生成一个同步的版本库，访问时只需要切换目录名即可。

• 备份目录在启用之前切记不可修改。否则后续备份增量版本时会有报错。

• 此方法相当于一切全量拷贝，包括配置和数据。也无需产生中间文件。

• 可以是他机目录，带用户 ip 。当故障发生时，可马上切换到备份机（已安装 svn）上启服务。

• 使用 svnlook youngest 来查看当前库的最新版本号

双机热备思路

备份机

chmod +777 /public/backup/
vi /etc/exports
##加上 /public/backup/ 作为共享目录
sudo service nfs-kernel-server restart

版本机

把备份机目录 mount 到版本机：

mount -t nfs -o rw 172.0.xx.xxxx:/public/backup /backup

设置定时任务：

crontab -e
00 00 * * * /backup/backup.sh QA_script
30 00 * * * /backup/backup.sh Auto_script

backup.sh

#!/bin/sh
Depot=$1
Date=`date +%Y%m%d%H%M`
Log=${Depot}_${Date}.log
Depot_Path="/var/svn/svn_dir"
Back_Path="/backup"

if [ -z ${Depot} ];
then
echo "error:no depot : usage:./xx.sh Depot_name"
exit -1
fi
echo "depot : ${Depot_Path}/${Depot} "  >>/backup/log/${Log} 2>&1
echo "version:"  >>/backup/log/${Log} 2>&1
svnlook youngest ${Depot_Path}/${Depot}  >>/backup/log/${Log} 2>&1
echo "sync ing....."  >>/backup/log/${Log} 2>&1
svnadmin hotcopy ${Depot_Path}/${Depot} ${Back_Path}/${Depot}_bak --clean-logs --incremental >>/backup/log/${Log} 2>&1
echo "sync done."  >>/backup/log/${Log} 2>&1
echo "depot : ${Back_Path}/${Depot}_bak "  >>/backup/log/${Log} 2>&1
echo "version:"  >>/backup/log/${Log} 2>&1
svnlook youngest ${Back_Path}/${Depot}_bak >>/backup/log/${Log} 2>&1
~  

`crontab -e
30 00 * * * /backup/backup.sh Auto_script

验证：

备份机：

$ apt-get install subversion

$ apt-get install libapache2-svn​

使用备份机目录访验证 svn://172.0.xx.xx/QA_script_bak

如果认证有问题，检查下是不是版本库中 con/svnserve.conf 里配置的用户文件是相对路径。