我在 CentOS 7 上安装了 MariaDB 10.2.10，但它停止运行。如果我这样做：
如果我这样做：
systemctl restart mariadb.service
我得到：
mariadb.service: main process exited, code=killed, status=6/ABRT
Failed to start MariaDB 10.2.12 database server.
Unit mariadb.service entered failed state.
奇怪的是，运行了一年多了，现在突然无法启动了。这是一个生产服务器，所以我有几个我需要的数据库；我不能从头开始重新安装它。
我该怎么做才能让 MariaDB 恢复并运行而不丢失我的数据库？
systemd: mariadb.service: main process exited, code=killed, status=6/ABRT
Asystemd: Failed to start MariaDB 10.2.12 database server.
Asystemd: Unit mariadb.service entered failed state.
Asystemd: mariadb.service failed.
systemd: mariadb.service holdoff time over, scheduling restart.
systemd: Starting MariaDB 10.2.12 database server...
mysqld: 2018-04-24 7:06:38 140101542774912 [Note] /usr/sbin/mysqld (mysqld 10.2.12-MariaDB) starting as process 24976 ...
mysqld: 2018-04-24 7:06:38 140101542774912 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
mysqld: 2018-04-24 7:06:38 140101542774912 [Note] InnoDB: Uses event mutexes
mysqld: 2018-04-24 7:06:38 140101542774912 [Note] InnoDB: Compressed tables use zlib 1.2.7
mysqld: 2018-04-24 7:06:38 140101542774912 [Note] InnoDB: Using Linux native AIO
mysqld: 2018-04-24 7:06:38 140101542774912 [Note] InnoDB: Number of pools: 1
mysqld: 2018-04-24 7:06:38 140101542774912 [Note] InnoDB: Using SSE2 crc32 instructions
mysqld: 2018-04-24 7:06:38 140101542774912 [Note] InnoDB: Initializing buffer pool, total size = 128M, instances = 1, chunk size = 128M
mysqld: 2018-04-24 7:06:38 140101542774912 [Note] InnoDB: Completed initialization of buffer pool
mysqld: 2018-04-24 7:06:38 140100781233920 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().
mysqld: 2018-04-24 7:06:38 140101542774912 [Note] InnoDB: Log sequence number at the start 1597389266 and the end 1597386521 do not match
mysqld: 2018-04-24 7:06:38 140101542774912 [ERROR] InnoDB: Database page corruption on disk or a failed file read of tablespace innodb_system page [page id: space=0, page number=5]. You may have to recover from a backup.
mysqld: 2018-04-24 7:06:38 140101542774912 [Note] InnoDB: Uncompressed page, stored checksum in field1 2317626450, calculated checksums for field1: crc32 2317626450/1916606668, innodb 3858799490, page type 7 == TRX_SYS.none 3735928559, stored checksum in field2 960005681, calculated checksums for field2: crc32 2317626450/1916606668, innodb 756644076, none 3735928559, page LSN 0 1597389266, low 4 bytes of LSN at page end 1597386521, page number (if stored to page already) 5, space id (if created with >= MySQL-4.1.1 and stored already) 0
mysqld: InnoDB: Page may be a transaction system page
mysqld: 2018-04-24 7:06:38 140101542774912 [Note] InnoDB: It is also possible that your operating system has corrupted its own file cache and rebooting your computer removes the error. If the corrupt page is an index page. You can also try to fix the corruption by dumping, dropping, and reimporting the corrupt table. You can use CHECK TABLE to scan your table for corruption. Please refer to http://dev.mysql.com/doc/refman/5.7/en/forcing-innodb-recovery.html for information about forcing recovery.
mysqld: 2018-04-24 7:06:38 140101542774912 [ERROR] [FATAL] InnoDB: Aborting because of a corrupt database page.
mysqld: 180424 7:06:38 [ERROR] mysqld got signal 6 ;
mysqld: This could be because you hit a bug. It is also possible that this binary
mysqld: or one of the libraries it was linked against is corrupt, improperly built,
mysqld: or misconfigured. This error can also be caused by malfunctioning hardware.
mysqld: To report this bug, see https://mariadb.com/kb/en/reporting-bugs
mysqld: We will try our best to scrape up some info that will hopefully help
mysqld: diagnose the problem, but since we have already crashed,
mysqld: something is definitely wrong and this may fail.
mysqld: Server version: 10.2.12-MariaDB
mysqld: key_buffer_size=134217728
mysqld: read_buffer_size=131072
mysqld: max_used_connections=0
mysqld: max_threads=153
mysqld: thread_count=0
mysqld: It is possible that mysqld could use up to
mysqld: key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 467244 K bytes of memory
mysqld: Hope that's ok; if not, decrease some variables in the equation.
mysqld: Thread pointer: 0x0
mysqld: Attempting backtrace. You can use the following information to find out
mysqld: where mysqld died. If you see no messages after this, something went
mysqld: terribly wrong...
mysqld: stack_bottom = 0x0 thread_stack 0x49000
mysqld: /usr/sbin/mysqld(my_print_stacktrace+0x2e)[0x557c611fdc4e]
mysqld: /usr/sbin/mysqld(handle_fatal_signal+0x355)[0x557c60c88825]
mysqld: /lib64/libpthread.so.0(+0xf5e0)[0x7f6bee7195e0]
mysqld: /lib64/libc.so.6(gsignal+0x37)[0x7f6becc261f7]
mysqld: /lib64/libc.so.6(abort+0x148)[0x7f6becc278e8]
mysqld: /usr/sbin/mysqld(+0x9a5643)[0x557c60fc2643]
mysqld: /usr/sbin/mysqld(+0x9e7289)[0x557c61004289]
mysqld: /usr/sbin/mysqld(+0xa0adfa)[0x557c61027dfa]
mysqld: /usr/sbin/mysqld(+0x9e8986)[0x557c61005986]
mysqld: /usr/sbin/mysqld(+0x9888af)[0x557c60fa58af]
mysqld: /usr/sbin/mysqld(+0x9575ab)[0x557c60f745ab]
mysqld: mysys/stacktrace.c:268(my_print_stacktrace)[0x557c60f76d87]
mysqld: buf/buf0buf.cc:6026(buf_page_io_complete(buf_page_t*, bool))[0x557c60e62cf9]
mysqld: buf/buf0rea.cc:227(buf_read_page(page_id_t const&, page_size_t const&))[0x557c60c8ace4]
mysqld: srv/srv0start.cc:896(srv_undo_tablespaces_init(bool))[0x557c60b0b3c0]
mysqld: /usr/sbin/mysqld(_Z11plugin_initPiPPci+0x9a2)[0x557c60b0cc72]
mysqld: handler/ha_innodb.cc:4381(innobase_init(void*))[0x557c60a66be8]
mysqld: sql/handler.cc:520(ha_initialize_handlerton(st_plugin_int*))[0x557c60a6b2d1]
mysqld: sql/sql_plugin.cc:1411(plugin_initialize(st_mem_root*, st_plugin_int*, int*, char**, bool))[0x7f6becc12c05]
mysqld: sql/mysqld.cc:5258(init_server_components())[0x557c60a5f51d]
mysqld: The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains
mysqld: information that should help you find out what is causing the crash.
systemd: mariadb.service: main process exited, code=killed, status=6/ABRT
systemd: Failed to start MariaDB 10.2.12 database server.
systemd: Unit mariadb.service entered failed state.
systemd: mariadb.service failed.
如果光盘没有硬件问题，可以尝试通过mysql强制恢复，应该可以解决问题。
【注意】InnoDB：也有可能你的操作系统有 损坏了自己的文件缓存并重新启动计算机会删除 错误。如果损坏的页是索引页。您也可以尝试修复 通过倾销、丢弃和重新进口腐败来进行腐败 桌子。您可以使用 CHECK TABLE 扫描表是否损坏。 有关强制恢复的信息，请参阅 http://dev.mysql.com/doc/refman/5.7/en/forcing-innodb-recovery.html。
另请参阅https://www.percona.com/blog/2016/01/19/dealing-with-corrupted-innodb-data/
将 C:\xampp\mysql ackup 的所有内容复制到 C:\xampp\mysql\data 即可修复