Linux SVN Full Backup and Incremental Backup

evan_china

  SVN作为我们的版本管理库，记录着我们在整个项目过程中的变更和修改，对整个项目的生命流程有着重要的意义，所以，做好备份，不让数据在不可预料的情况下丢失，是非常重要而迫切的。
  SVN备份策略：
  1） 完全备份 每周一次
  2） 增量备份 每天一次
  3） 实时同步 项目没有需求，所以不做

1）项目列表
##############################################
#
# Write Repository Name in here 2009-12-03
#                       Author: ******
#
##############################################
#Document Repository
svndocrepos
#SourceCode Repository
svnsrcrepos

2）完全备份
fullbackup.sh
#/bin/bash
#
#Full Backup SVN Repository on 2009-12-03
#                      Author:******
#Subversion Home
SVN_HOME=/usr/local/subversion
#Backup Directory
BACKUP_DIR=/backup/svnrepos/weekly
#Log Directory
LOG_PATH=/backup/svnrepos/log
#Backup Date
DATE=`date +%Y%m%d`
#Backup Time
TIME=`date +%T`
#Project File
PROJLST=/svnrepos/script/project.lst
#SVNADMIN Command Path
SVNADMIN=$SVN_HOME/bin/svnadmin
#Project List
LIST=`cat $PROJLST | grep -v "#" | awk 'NF'`
#Read the Project Name in Project List
for PROJNAME in $LIST
  do
#如果你的仓库都在一个目录下面，就不需要这个判断
    echo "The Project Name is $PROJNAME." >> $LOG_PATH/Fullbackup_$PROJNAME"_"$DATE.log
    echo "The SVN directory is $SVN_ROOT." >>$LOG_PATH/Fullbackup_$PROJNAME"_"$DATE.log
#Require the newest version
    VERSION=`$SVN_HOME/bin/svnlook youngest $SVN_ROOT/$PROJNAME`
    echo "The current version is $VERSION." >> $LOG_PATH/Fullbackup_$PROJNAME"_"$DATE.log
    FILENAME=$PROJNAME"_"$DATE"_"$VERSION.tar.bz2
#Check if the backup file exist or not
    if [ -f $BACKUP_DIR/$FILENAME ]
     then echo "Backup file $FILENAME is already exist $DATE $TIME." >> $LOG_PATH/Fullbackup_$PROJNAME"_"$DATE.log
    else
#Start hotcopy backup
    echo "Start Backup the SVN repository $PROJNAME $DATE $TIME" >> $LOG_PATH/Fullbackup_$PROJNAME"_"$DATE.log
    $SVNADMIN hotcopy $SVN_ROOT/$PROJNAME --clean-logs $BACKUP_DIR/$PROJNAME
#Require the version for backup project
    BAKVER=`$SVN_HOME/bin/svnlook youngest $BACKUP_DIR/$PROJNAME`
    echo "The backup version of $PROJNAME is $BAKVER $DATE $TIME." >> $LOG_PATH/Fullbackup_$PROJNAME"_"$DATE.log
#Test if the backup is success
      if [ $BAKVER = $VERSION ]
       then
       cd $BACKUP_DIR
       tar cjf $FILENAME $PROJNAME
       rm -fr $BACKUP_DIR/$PROJNAME
#      echo "VERSION" > $LOG_PATH/$PROJNAME"_"last_revision.txt
       echo "Full Backup Successful $DATE $TIME!!!" >> $LOG_PATH/Fullbackup_$PROJNAME"_"$DATE.log
      else
         echo "Full Backup failed $DATE $TIME." >> $LOG_PATH/Fullbackup_$PROJNAME"_"$DATE.log
      fi
    fi
done
3）增量备份
increbackup.sh
#/bin/bash
#
#Increment Backup SVN Repository on 2009-12-03
#
#Subversion Home
SVN_HOME=/usr/local/subversion
#Backup Directory
BACKUP_DIR=/backup/svnrepos/daily
#Log Directory
LOG_PATH=/backup/svnrepos/log
#Backup Date
DATE=`date +%Y%m%d`
#Backup Time
TIME=`date +%T`
#Project File
PROJLST=/svnrepos/script/project.lst
#SVNADMIN Command Path
SVNADMIN=$SVN_HOME/bin/svnadmin
#Project List
LIST=`cat $PROJLST | grep -v "#" | awk 'NF'`
#Read the Project Name in Project List
for PROJNAME in $LIST
  do
#如果你的仓库都在一个目录下面，就不需要这个判断
    LOGFILE=$LOG_PATH/Increbackup_$PROJNAME"_"$DATE.log
    VERFILE=$LOG_PATH/$PROJNAME"_"last_revision.txt
    echo "The Project Name is $PROJNAME." | tee $LOGFILE
    echo "The SVN directory is $SVN_ROOT." | tee -a $LOGFILE
    LOWER=0
    UPPER=0
#Require the newest version
    VERSION=`$SVN_HOME/bin/svnlook youngest $SVN_ROOT/$PROJNAME`
    echo "The current version is $VERSION." | tee -a $LOGFILE
    UPPER=$VERSION
#Require the last backup version
    if [ -f $VERFILE ]
     then echo "Require the last version from file $VERFILE $DATE $TIME." | tee -a  $LOGFILE
     LOWER=`cat $VERFILE`
     LOWER=`expr $LOWER + 1`
    else
     LOWER=$LOWER
    fi
#Check if it need to backup or not
    if [ $UPPER -le $LOWER ];then
      echo "The $PROJNAME Repository newest version is $UPPER, last backup version is `expr $LOWER - 1`, it did not need to backup $DATE $TIME" |tee -a $LOGFILE
      continue
    fi
#Start Increment Backup
    FILENAME=$PROJNAME"_"$DATE"_"$LOWER"_"$UPPER.tar.bz2
    DMPFILE=$BACKUP_DIR/$PROJNAME"_"$DATE"_"$LOWER"_"$UPPER.dmp
    echo "Start Increment Backup the SVN repository $PROJNAME from $LOWER to $UPPER $DATE $TIME" | tee -a $LOGFILE
    $SVNADMIN dump $SVN_ROOT/$PROJNAME -r $LOWER:head --incremental > $DMPFILE
#Test if the backup is success
      if [ -f $DMPFILE ]
       then
       cd $BACKUP_DIR
       echo "Start compress the dmp file $DMPFILE......" |tee -a $LOGFILE
       tar cjf $FILENAME $PROJNAME"_"$DATE"_"$LOWER"_"$UPPER.dmp
       echo "Delete the dmp file $DMPFILE...... " |tee -a $LOGFILE
       rm -fr $BACKUP_DIR/$PROJNAME"_"$DATE"_"$LOWER"_"$UPPER.dmp
       echo "$UPPER" > $VERFILE
       echo "Increment Backup Successful $DATE $TIME!!!" |tee -a $LOGFILE
      else
         echo "Increment Backup failed $DATE $TIME." |tee -a $LOGFILE
      fi
done
加到crontab上：crontab -e
0 1 * * * sh /svnrepos/script/increbackup.sh >>/backup/svnrepos/log/crontab_backup.log
0 3 * * 5 sh /svnrepos/script/fullbackup.sh >>/backup/svnrepos/log/crontab_backup.log
还没有加上存放到其他服务器上的备份，没有拿到FTP服务器，后续更新。
做好备份，就可以高枕无忧了，每个月做一次恢复测试就OK了。



本文来自ChinaUnix博客，如果查看原文请点：http://blog.chinaunix.net/u2/81056/showart_2115614.html