mysql磁盘IO问题

Standard

14:30 发现游戏战斗卡
14:32 top查看发现cpu还好,但wa的百分比很高; tail -n 100 /var/log/messages 看到大量 abort io called 信息
14:35 准备将从库转换为主库
14:38 发现从库的同步已于先前一会时间出错;发公告停服
14:48 从主库备份出数据
15:50 因为主库IO已经有问题,所以备份超慢
15:55 更改从库配置及权限;将备份数据导入从库
16:05 完成开服

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