之前用我这个机器做mysql的测试来，今天启动准备搭建一套线上的主从，结果起不来了。。。
错误日志：
;InnoDB: End of page dump 170807 11:37:02 InnoDB: Page checksum 1575996416, prior-to-4.0.14-form checksum 1371122432 InnoDB: stored checksum 0, prior-to-4.0.14-form stored checksum 0 InnoDB: Page lsn 0 0, low 4 bytes of lsn at page end 0 InnoDB: Page number (if stored to page already) 0, InnoDB: space id (if created with >= MySQL-4.1.1 and stored already) 0 InnoDB: Page may be a freshly allocated page 170807 11:37:02InnoDB: Error: trying to access a stray pointer 0x80007f66af393ff8 InnoDB: buf pool start is at 0x7f66af384000, end at 0x7f66afb84000 InnoDB: Probable reason is database corruption or memory InnoDB: corruption. If this happens in an InnoDB database recovery, see InnoDB: http://dev.mysql.com/doc/refman/5.1/en/forcing-innodb-recovery.html InnoDB: how to force recovery. 170807 11:37:02 InnoDB: Assertion failure in thread 140079112959968 in file ../../storage/innobase/include/buf0buf.ic line 264 InnoDB: We intentionally generate a memory trap. InnoDB: Submit a detailed bug report to http://bugs.mysql.com. InnoDB: If you get repeated assertion failures or crashes, even InnoDB: immediately after the mysqld startup, there may be InnoDB: corruption in the InnoDB tablespace. Please refer to InnoDB: http://dev.mysql.com/doc/refman/5.1/en/forcing-innodb-recovery.html InnoDB: about forcing recovery. 03:37:02 UTC - mysqld got signal 6 ; This could be because you hit a bug. It is also possible that this binary or one of the libraries it was linked against is corrupt, improperly built, or misconfigured. This error can also be caused by malfunctioning hardware. We will try our best to scrape up some info that will hopefully help diagnose the problem, but since we have already crashed, something is definitely wrong and this may fail. key_buffer_size=8384512 read_buffer_size=131072 max_used_connections=0 max_threads=151 thread_count=0 connection_count=0 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 338336 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. Thread pointer: 0x0 Attempting backtrace. You can use the following information to find out where mysqld died. If you see no messages after this, something went terribly wrong... stack_bottom = 0 thread_stack 0x40000 /usr/libexec/mysqld(my_print_stacktrace+0x29) [0x850ca9] /usr/libexec/mysqld(handle_fatal_signal+0x483) [0x6a4143] /lib64/libpthread.so.0() [0x3514e0f7e0] /lib64/libc.so.6(gsignal+0x35) [0x3514a32625] /lib64/libc.so.6(abort+0x175) [0x3514a33e05] /usr/libexec/mysqld(page_cur_search_with_match+0x77b) [0x79855b] /usr/libexec/mysqld(btr_cur_search_to_nth_level+0x6ea) [0x73bd9a] /usr/libexec/mysqld(btr_pcur_open_on_user_rec+0x64) [0x7eab34] /usr/libexec/mysqld() [0x75a46f] /usr/libexec/mysqld(dict_load_sys_table+0x59) [0x7602d9] /usr/libexec/mysqld(dict_boot+0x91c) [0x7ebf6c] /usr/libexec/mysqld(innobase_start_or_create_for_mysql+0x11f6) [0x7c8466] /usr/libexec/mysqld() [0x72f84b] /usr/libexec/mysqld(ha_initialize_handlerton(st_plugin_int*)+0x31) [0x697b91] /usr/libexec/mysqld() [0x7177db] /usr/libexec/mysqld(plugin_init(int*, char**, int)+0x6e4) [0x719ad4] /usr/libexec/mysqld() [0x5bf242] /usr/libexec/mysqld(main+0x1b3) [0x5c1bb3] /lib64/libc.so.6(__libc_start_main+0xfd) [0x3514a1ed5d] /usr/libexec/mysqld() [0x509939] The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains information that should help you find out what is causing the crash. 170807 11:37:02 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended
看日志信息应该是异常关闭导致库损坏，找了一下帖子解决：
[root@ mysql]# cd /var/lib/mysql [root@ mysql]# ll total 20496 drwx------ 2 mysql mysql 4096 Jul 19 05:49 hotel_cdn_control -rw-rw---- 1 mysql mysql 10485760 Aug 7 11:41 ibdata1 -rw-rw---- 1 mysql mysql 5242880 Aug 7 11:41 ib_logfile0 -rw-rw---- 1 mysql mysql 5242880 Aug 7 11:41 ib_logfile1 drwx------ 2 mysql mysql 4096 Jul 19 03:44 mysql srwxrwxrwx 1 mysql mysql 0 Aug 7 11:41 mysql.sock drwxr-xr-x 2 root root 4096 Aug 7 11:41 old drwx------ 2 mysql mysql 4096 Jul 19 03:44 test [root@ mysql]# mkdir bcksql [root@ mysql]# mv *ib* bcksql [root@ mysql]# service mysqld start
已解决。