之前xtrabackup 不能备份mariadb 10的问题，看官方文档，无意找到了答案，很简单，升级xtrabackup
到2.1.7+ 版本即可，之前用的是2.0.2版本。
官方说明：https://mariadb.com/kb/en/mariadb/mariadb-documentation/clients-and-utilities/backup-restore-and-import/backup-restore-and-import-xtrabackup/
描述如下：
If you are getting errors like this
140208 23:23:03 [Note] Found 1 prepared transaction(s) in
InnoDB
140208 23:23:03 [ERROR] Found 1 prepared transactions! It means
that
mysqld was not shut down properly last time and critical
recovery
information (last binlog or tc.log file) was manually deleted
after a
crash. You have to start mysqld with --tc-heuristic-recover
switch to …