subversion锁定解除、升级、备份与恢复

1.发生琐定，解除步骤：

　A.确定没有存取.关闭httpd服务器.
　B.成为管理员身份
　C.执行svnadmin recover /path/to/repo命令
　D.重启动subversion.

　//注意：
　A.以管理员身份，非root身份，如果一root身份，要重新chmod,库的权限.

2.升级的步骤：

　A.现有版本svnadmin ,将档案库dump出来
　B.升级到新版的subversion
　C.删除就档案库,再原处以新版本subversion,建立新的空档案库.
　D.再利用新版本svnadmin ,将档案库load到刚刚建立好的档案库.

　实例：
　//导出
　$svnlook youngest oldrepo
　$svnadmin dump oldrepo >; dumpfile
　//还原
　$svnadmin load newrepo < dumpfile

　3.即时备份目录

　$svnadmin hotcopy /path/to/repo /backup/repo

4.渐进式备份实现.

A.建立文件hot-backup.perl.内容如下：

　#!/usr/bin/perl -w
　use strict;

my $repos_path = '/path/to/repos';
　my $dumpfile = '/usr/backup/svn-dumpfile';
　my $last_dumped = '/var/log/svn-last-dumped';
　my $svnlook = '/usr/local/subversion/bin/svnlook';
　my $svnadmin = '/usr/local/subversion/bin/svnadmin';

# Figure out the starting revision. Use 0 if we cannot read the
　# last-dumped file, else use the revision in that file incremented
　# by 1.
　my $new_start = 0;
　if (open LASTDUMPED, $last_dumped)
　{
　my $line = <LASTDUMPED>;;
　if (defined $line and $line =~ /^(\d+)/)
　{
　$new_start = $1 + 1;
　}
　close LASTDUMPED;
　}

# Query the youngest revision in the repos.
　my $youngest = `$svnlook youngest $repos_path`;
　defined $youngest && $youngest =~ /^\d+$/
　or die "$0: 'svnlook youngest $repos_path' cannot get youngest revision.\n";
　chomp $youngest;

# Do the backup.
　system("$svnadmin dump $repos_path --revision $new_startyoungest --incremental >;>; $dumpfile.tmp" == 0
　or die "$0: svnadmin dump to '$dumpfile.tmp' failed.\n";

# Store a new last-dumped revision.
　open LASTDUMPED, ">; $last_dumped.tmp"
　or die "$0: cannot open '$last_dumped.tmp' for writing: $!\n";
　print LASTDUMPED "$youngest\n";
　close LASTDUMPED
　or die "$0: error in closing '$last_dumped.tmp' for writing: $!\n";

# Rename to final locations.
　rename("$dumpfile.tmp", $dumpfile)
　or die "$0: cannot rename '$dumpfile.tmp' to '$dumpfile': $!\n";
　rename("$last_dumped.tmp", $last_dumped)
　or die "$0: cannot rename '$last_dumped.tmp' to '$last_dumped': $!\n";
　# All done!

B.备份.先编辑hot-backup.perl里面正确的路径名.

　#vi hot-backup.perl修改为自己的路径：
　my $repos_path = '/path/to/repos';
　my $dumpfile = '/usr/backup/svn-dumpfile';
　my $last_dumped = '/var/log/svn-last-dumped';
　my $svnlook = '/usr/local/subversion/bin/svnlook';
　my $svnadmin = '/usr/local/subversion/bin/svnadmin';
　#perl hot-backup.perl得到的文件是/usr/backup/svn-dumpfile

c.还原

　1.建立新的仓库
　#svnadmin create /usr/local/repo/newrepo

　2.还原信息
　#svnadmin load /usr/local/repo/newrepo < /usr/backup/svn-dumpfile

　3.注意：以后每天都备份.再执行还原即可,不必新建仓库了.

　4.为了每段时间能验证备份的有效性.最好是建立一个验证仓库，用来还原，看信息是否正常。

d.有提交，就备份.进入仓库

　#mv /hooks/post-commit.tmpl /hooks/post-commit
　#vi /hooks/post-commit
　添加内容在后面
　perl /usr/local/subversion/backup/hot-backup.perl
　每次提交触发一次备份

E.修改一下上面的程序，让能接受参数输入

　#!/usr/bin/perl -w
　use strict;

my $repos_path = $ARGV[0];
　my $dumpfile = $ARGV[1];
　my $last_dumped = $ARGV[2];

my $svnlook = '/usr/local/subversion/bin/svnlook';
　my $svnadmin = '/usr/local/subversion/bin/svnadmin';

#for usage
　if(@ARGV != 3 )
　{
　print "$0:[/path/to/repo] [/backup/dumpfile] [/var/log/lastdump]\n";
　exit 1 ;
　}

# Figure out the starting revision. Use 0 if we cannot read the
　# last-dumped file, else use the revision in that file incremented
　# by 1.
　my $new_start = 0;
　if (open LASTDUMPED, $last_dumped)
　{
　my $line = <LASTDUMPED>;;
　if (defined $line and $line =~ /^(\d+)/)
　{
　　$new_start = $1 + 1;
　}
　close LASTDUMPED;
　}

# Query the youngest revision in the repos.
　my $youngest = `$svnlook youngest $repos_path`;
　defined $youngest && $youngest =~ /^\d+$/
　or die "$0: 'svnlook youngest $repos_path' cannot get youngest revision.\n";
　chomp $youngest;

# Do the backup.
　system("$svnadmin dump $repos_path --revision $new_startyoungest --incremental >;>; $dumpfile.tmp" == 0
　or die "$0: svnadmin dump to '$dumpfile.tmp' failed.\n";

# Store a new last-dumped revision.
　open LASTDUMPED, ">; $last_dumped.tmp"
　or die "$0: cannot open '$last_dumped.tmp' for writing: $!\n";
　print LASTDUMPED "$youngest\n";
　close LASTDUMPED
　or die "$0: error in closing '$last_dumped.tmp' for writing: $!\n";

# Rename to final locations.
　rename("$dumpfile.tmp", $dumpfile)
　or die "$0: cannot rename '$dumpfile.tmp' to '$dumpfile': $!\n";
　rename("$last_dumped.tmp", $last_dumped)
　or die "$0: cannot rename '$last_dumped.tmp' to '$last_dumped': $!\n";
　# All done!

F.有提交，就备份.进入仓库

　#mv /hooks/post-commit.tmpl /hooks/post-commit
　#vi /hooks/post-commit
　添加内容在后面
　perl /usr/local/subversion/backup/hot-backup.pl /usr/local/repo/webaddress 　/usr/local/subversion/backup/webaddress /var/log/webaddress
　每次提交触发一次备份

5.hot-backup.py完整备份

　6.tar包完整备份

　1.进入仓库的根目录/usrl/local/
　#cd /usr/local/

　2.备份整个目录.
　#tar -cf repo.tar /usr/local/repo.

　3.还原时候来到根目录/usrl/local/
　#tar -xvf repo.tar

4.也可以备份单个目录.
　#tar -cf svn.tar /usr/local/repo/svn.

　5.还原单个目录到目录/usr/local/repo/
　#tar -xvf svn.tar

　6.每天的自动备份脚本backup.sh.放于/usrl/local/subversion/backup目录下
　#!/bin/sh
　USAGE="Usage:`basename $0` [-f|-d] [files|directories]"
　if [ $# -lt 2 ] ; then
　echo "$USAGE";
　exit 1 ;
　fi
　case "$1" in
　-f) shift
　TARGES="-tvf" ;
　for i in "$@" ;
　do
　if [ -f "$i" ] ; then
　FILES = `tar $TAGES "$i" 2 >; /dev/null`
　if [ $? -eq 0 ] ; then
　echo ; echo "$i" ; echo "$FILES"
　else
　echo "ERRORi not a tar file."
　fi
　else
　echo "ERRORi not a file.";
　fi
　done
　;;
　-d) shift
　TARGES="-cvf" ;
　if [ -f backup.tar ] ; then
　mv backup.tar backup1.tar
　fi
　tar $TARGES backup.tar "$@"
　;;
　*) echo "$USAGE"
　exit 0
　;;
　esac
　exit $?

8.固定时间运行脚本

　A.建立运行脚本backup：
　20 18 * * * /usr/local/subversion/backup/backup.sh -d /usr/local/repo
　B.启用脚本
　#crontab backup
　#crontab -l 查看运行的脚本
　20 18 * * * /usr/local/subversion/backup/backup.sh -d /usr/local/repo //每日18:20，下班后20分钟

注意：

　1.linux直接cp的备份仓库能在nt下使用,但是nt的复制不能在linux下使用.