设置svn1.8源:
tee /etc/yum.repos.d/wandisco-svn.rep <<-"EOF"
[WandiscoSVN]
name=Wandisco SVN Repo
baseurl=http://opensource.wandisco.com/centos/6/svn-1.8/RPMS/$basearch/
enabled=1
gpgcheck=0
EOF
更新svn到1.8
yum clean all
yum install subversion
升級原來的svn仓库
svn upgrade
原文：http://www.cnblogs.com/duyouqian/p/6907910.html