SVN: error can't find temporary directory:Internal error

    今天使用svn update或checkout时，均提示：error can't find temporary directory:Internal error 错误。 

#svn update
正在升级 '.':
svn: E020014: Can't find a temporary directory: Internal error

    后来发现linux 下盘满,导致svn找不到临时目录存放文件所致。