My Server :Windows 2003 R2RAM 4GMariaDB 10.0.19 01 June i'm sure i shutdown normally02 June is holiday03 June i see "crash recovery" in log file i'm sure disk is ok with chkdsk e: sometime i get this word in log file, so what caused this here my log 150601 20:17:10 [Note] InnoDB: Using mutexes to ref count buffer pool pages150601 20:17:10 [Note] InnoDB: The InnoDB memory heap is disabled150601 20:17:10 [Note] InnoDB: Mutexes and rw_locks use Windows interlocked functions150601 20:17:10 [Note] InnoDB: Memory barrier is not used150601 20:17:10 [Note] InnoDB: Compressed tables use zlib 1.2.3150601 20:17:10 [Note] InnoDB: Not using CPU crc32 instructions150601 20:17:10 [Note] InnoDB: Initializing buffer pool, size = 1008.0M150601 20:17:10 [Note] InnoDB: Completed initialization of buffer pool150601 20:17:10 [Note] InnoDB: Highest supported file format is Barracuda.150601 20:17:10 [Note] InnoDB: 128 rollback segment(s) are active.150601 20:17:10 [Note] InnoDB: Waiting for purge to start150601 20:17:10 [Note] InnoDB:  Percona XtraDB (http://www.percona.com) 5.6.23-72.1 started; log sequence number 10406975924150601 20:17:11 [Note] Server socket created on IP: '0.0.0.0'.150601 20:17:11 [Warning] 'proxies_priv' entry '@% root@kutu' ignored in --skip-name-resolve mode.150601 20:17:11 [Note] Event Scheduler: Loaded 0 events150601 20:17:11 [Note] E:\smart\smart_database_mariadb.10\bin\mysqld.exe: ready for connections.Version: '10.0.19-MariaDB-log'  socket: ''  port: 3309  mariadb.org binary distribution150601 20:22:11 [Note] feedback plugin: report to 'https://mariadb.org/feedback_plugin/post' was sent150601 20:22:14 [Note] feedback plugin: server replied 'ok'150601 20:33:39 [Note] E:\smart\smart_database_mariadb.10\bin\mysqld.exe: Normal shutdown 150601 20:33:39 [Note] Event Scheduler: Purging the queue. 0 events150601 20:34:02 [ERROR] feedback plugin: ssl failed for url 'https://mariadb.org/feedback_plugin/post' CryptGenRandom error150601 20:34:02 [Note] InnoDB: FTS optimize thread exiting.150601 20:34:02 [Note] InnoDB: Starting shutdown...150603  7:12:49 [Note] InnoDB: Using mutexes to ref count buffer pool pages150603  7:12:49 [Note] InnoDB: The InnoDB memory heap is disabled150603  7:12:49 [Note] InnoDB: Mutexes and rw_locks use Windows interlocked functions150603  7:12:49 [Note] InnoDB: Memory barrier is not used150603  7:12:49 [Note] InnoDB: Compressed tables use zlib 1.2.3150603  7:12:50 [Note] InnoDB: Not using CPU crc32 instructions150603  7:12:50 [Note] InnoDB: Initializing buffer pool, size = 1008.0M150603  7:12:50 [Note] InnoDB: Completed initialization of buffer pool150603  7:12:50 [Note] InnoDB: Highest supported file format is Barracuda.150603  7:12:50 [Note] InnoDB: The log sequence numbers 10406975924 and 10406975924 in ibdata files do not match the log sequence number 10407001762 in the ib_logfiles!150603  7:12:50 [Note] InnoDB: Database was not shutdown normally!150603  7:12:50 [Note] InnoDB: Starting crash recovery.150603  7:12:50 [Note] InnoDB: Reading tablespace information from the .ibd files...150603  7:13:01 [Note] InnoDB: Restoring possible half-written data pages 150603  7:13:01 [Note] InnoDB: from the doublewrite buffer...InnoDB: Last MySQL binlog file position 0 11515, file name E:\smart\smart_database_mariadb.10\repl\KMS-PLB-bin.000001150603  7:13:02 [Note] InnoDB: 128 rollback segment(s) are active.150603  7:13:02 [Note] InnoDB: Waiting for purge to start150603  7:13:02 [Note] InnoDB:  Percona XtraDB (http://www.percona.com) 5.6.23-72.1 started; log sequence number 10407001762150603  7:13:03 [Note] Server socket created on IP: '0.0.0.0'.150603  7:13:03 [Warning] 'proxies_priv' entry '@% root@kutu' ignored in --skip-name-resolve mode.150603  7:13:03 [Note] Event Scheduler: Loaded 0 events150603  7:13:03 [Note] E:\smart\smart_database_mariadb.10\bin\mysqld.exe: ready for connections.Version: '10.0.19-MariaDB-log'  socket: ''  port: 3309  mariadb.org binary distribution150603  7:18:03 [Note] feedback plugin: report to 'https://mariadb.org/feedback_plugin/post' was sent150603  7:18:04 [Note] feedback plugin: server replied 'ok'