buffer-系统定时备份时一直不成功，mysql错误日志写的看不懂，各位大神给指点一下吧

150909 1:59:00 [Note] C:\Program Files\MySQL\MySQL Server 5.5\bin\mysqld: Normal shutdown

150909 1:59:00 [Note] Event Scheduler: Purging the queue. 1 events
150909 1:59:00 InnoDB: Starting shutdown...
150909 1:59:00 InnoDB: Shutdown completed; log sequence number 183602652
150909 1:59:00 [Note] C:\Program Files\MySQL\MySQL Server 5.5\bin\mysqld: Shutdown complete

150909 1:59:02 [Note] Plugin 'FEDERATED' is disabled.
150909 1:59:02 InnoDB: The InnoDB memory heap is disabled
150909 1:59:02 InnoDB: Mutexes and rw_locks use Windows interlocked functions
150909 1:59:02 InnoDB: Compressed tables use zlib 1.2.3
150909 1:59:02 InnoDB: Initializing buffer pool, size = 339.0M
150909 1:59:02 InnoDB: Completed initialization of buffer pool
150909 1:59:02 InnoDB: highest supported file format is Barracuda.
150909 1:59:03 InnoDB: Waiting for the background threads to start
150909 1:59:04 InnoDB: 5.5.37 started; log sequence number 183602652
150909 1:59:04 [Note] Server hostname (bind-address): '0.0.0.0'; port: 3306
150909 1:59:04 [Note] - '0.0.0.0' resolves to '0.0.0.0';
150909 1:59:04 [Note] Server socket created on IP: '0.0.0.0'.
150909 1:59:04 [Note] Event Scheduler: Loaded 1 event
150909 1:59:04 [Note] C:\Program Files\MySQL\MySQL Server 5.5\bin\mysqld: ready for connections.
Version: '5.5.37' socket: '' port: 3306 MySQL Community Server (GPL)