最近我的生产服务器因数字海洋维护关闭而损坏。当我们尝试恢复数据库时，我们无法访问我们的Droplet。不知何故，我们设法恢复这些（ibdata1，ib_logfile0，ib_logfile1和一些.frm）文件。当我将这些文件复制到我的新mysql服务器（在另一台机器上）时，我无法启动mysql服务器。我得到了这个输出
sudo service mysql restart
mysql stop/waiting
start: Job failed to start
我检查了日志文件，我收到了这个错误，
151019 8:55:27 [Warning] Using unique option prefix myisam-recover instead of $
151019 8:55:27 [Note] Plugin 'FEDERATED' is disabled.
151019 8:55:27 InnoDB: The InnoDB memory heap is disabled
151019 8:55:27 InnoDB: Mutexes and rw_locks use GCC atomic builtins
151019 8:55:27 InnoDB: Compressed tables use zlib 1.2.8
151019 8:55:27 InnoDB: Using Linux native AIO
151019 8:55:27 InnoDB: Initializing buffer pool, size = 128.0M
151019 8:55:27 InnoDB: Completed initialization of buffer pool
InnoDB: Error: log file ./ib_logfile0 is of different size 0 50331648 bytes
InnoDB: than specified in the .cnf file 0 5242880 bytes!
151019 8:55:27 [ERROR] Plugin 'InnoDB' init function returned error.
151019 8:55:27 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
151019 8:55:27 [ERROR] Unknown/unsupported storage engine: InnoDB
151019 8:55:27 [ERROR] Aborting
151019 8:55:27 [Note] /usr/sbin/mysqld: Shutdown complete
151019 8:55:28 [Warning] Using unique option prefix myisam-recover instead of $
151019 8:55:28 [Note] Plugin 'FEDERATED' is disabled.
151019 8:55:28 InnoDB: The InnoDB memory heap is disabled
151019 8:55:28 InnoDB: Mutexes and rw_locks use GCC atomic builtins
151019 8:55:28 InnoDB: Compressed tables use zlib 1.2.8
151019 8:55:28 InnoDB: Using Linux native AIO
151019 8:55:28 InnoDB: Initializing buffer pool, size = 128.0M
151019 8:55:28 InnoDB: Completed initialization of buffer pool
InnoDB: Error: log file ./ib_logfile0 is of different size 0 50331648 bytes
InnoDB: than specified in the .cnf file 0 5242880 bytes!
151019 8:55:28 [ERROR] Plugin 'InnoDB' init function returned error.
151019 8:55:28 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
151019 8:55:28 [ERROR] Unknown/unsupported storage engine: InnoDB
151019 8:55:28 [ERROR] Aborting
151019 8:55:28 [Note] /usr/sbin/mysqld: Shutdown complete
151019 8:55:29 [Warning] Using unique option prefix myisam-recover instead of $
151019 8:55:29 [Note] Plugin 'FEDERATED' is disabled.
151019 8:55:29 InnoDB: The InnoDB memory heap is disabled
151019 8:55:29 InnoDB: Mutexes and rw_locks use GCC atomic builtins
151019 8:55:29 InnoDB: Compressed tables use zlib 1.2.8
151019 8:55:29 InnoDB: Using Linux native AIO
151019 8:55:29 InnoDB: Initializing buffer pool, size = 128.0M
151019 8:55:29 InnoDB: Completed initialization of buffer pool
InnoDB: Error: log file ./ib_logfile0 is of different size 0 50331648 bytes
InnoDB: than specified in the .cnf file 0 5242880 bytes!
151019 8:55:29 [ERROR] Plugin 'InnoDB' init function returned error.
151019 8:55:29 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
151019 8:55:29 [ERROR] Unknown/unsupported storage engine: InnoDB
151019 8:55:29 [ERROR] Aborting
151019 8:55:29 [Note] /usr/sbin/mysqld: Shutdown complete
我尝试按照@akuzminsky
的建议添加innodb_log_file_size= 50331648
然后我收到了这个错误日志。
151022 6:54:13 [Warning] Using unique option prefix myisam-recover instead of $
151022 6:54:13 [Note] Plugin 'FEDERATED' is disabled.
151022 6:54:13 InnoDB: The InnoDB memory heap is disabled
151022 6:54:13 InnoDB: Mutexes and rw_locks use GCC atomic builtins
151022 6:54:13 InnoDB: Compressed tables use zlib 1.2.8
151022 6:54:13 InnoDB: Using Linux native AIO
151022 6:54:13 InnoDB: Initializing buffer pool, size = 128.0M
151022 6:54:13 InnoDB: Completed initialization of buffer pool
151022 6:54:13 InnoDB: highest supported file format is Barracuda.
InnoDB: Log scan progressed past the checkpoint lsn 15379293
151022 6:54:13 InnoDB: Database was not shut down normally!
InnoDB: Starting crash recovery.
InnoDB: Reading tablespace information from the .ibd files...
InnoDB: Error: space header page consists of zero bytes in file ./toucan/ormcli$
InnoDB: Error: space header page consists of zero bytes in file ./toucan/catego$
InnoDB: Error: space header page consists of zero bytes in file ./toucan/survey$
InnoDB: Error: space header page consists of zero bytes in file ./toucan/compla$
InnoDB: Restoring possible half-written data pages from the doublewrite
InnoDB: buffer...
InnoDB: Doing recovery: scanned up to log sequence number 15382291
InnoDB: Page directory corruption: infimum not pointed to
151022 6:54:13 InnoDB: Page dump in ascii and hex (16384 bytes):
len 16384; hex 10cfd0d80000000000000000000000000000000000e9e915000800000000001$
InnoDB: End of page dump
151022 6:54:13 InnoDB: Page checksum 282054872, prior-to-4.0.14-form checksum$
InnoDB: stored checksum 282054872, prior-to-4.0.14-form stored checksum 3468306$
InnoDB: Page lsn 0 15329557, low 4 bytes of lsn at page end 15329557
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 file space header page
10:54:13 UTC - mysqld got signal 11 ;
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=16777216
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 = 346701 K $
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 0x30000
/usr/sbin/mysqld(my_print_stacktrace+0x20)[0x7fa4d90e2f10]
/usr/sbin/mysqld(handle_fatal_signal+0x3d5)[0x7fa4d8fcd175]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x10340)[0x7fa4d7d5d340]
/usr/sbin/mysqld(+0x5f058a)[0x7fa4d91e258a]
/usr/sbin/mysqld(+0x56c44e)[0x7fa4d915e44e]
/usr/sbin/mysqld(+0x576137)[0x7fa4d9168137]
/usr/sbin/mysqld(+0x5a5632)[0x7fa4d9197632]
/usr/sbin/mysqld(+0x5a6699)[0x7fa4d9198699]
/usr/sbin/mysqld(+0x591ad3)[0x7fa4d9183ad3]
/usr/sbin/mysqld(+0x542a1a)[0x7fa4d9134a1a]
/usr/sbin/mysqld(+0x511d48)[0x7fa4d9103d48]
/usr/sbin/mysqld(_Z24ha_initialize_handlertonP13st_plugin_int+0x41)[0x7fa4d8fcf$
/usr/sbin/mysqld(+0x302221)[0x7fa4d8ef4221]
/usr/sbin/mysqld(_Z11plugin_initPiPPci+0x92a)[0x7fa4d8ef821a]
/usr/sbin/mysqld(+0x28ac5b)[0x7fa4d8e7cc5b]
/usr/sbin/mysqld(_Z11mysqld_mainiPPc+0x45b)[0x7fa4d8e815db]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5)[0x7fa4d739fec5]
/usr/sbin/mysqld(+0x286b18)[0x7fa4d8e78b18]
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.
请帮我解决这个问题。 提前谢谢。
答案 0 :(得分：0)
错误日志中的注释行：
InnoDB: Error: log file ./ib_logfile0 is of different size 0 50331648 bytes
InnoDB: than specified in the .cnf file 0 5242880 bytes!
The actual size of the redo log file differs from the size in MySQL config.
将此行添加到my.cnf
innodb_log_file_size= 50331648
如果表空间已损坏，您仍然需要治愈它。但至少MySQL不会在这一步停止。