mysql does not start

171125 18:53:02 IoDB: Mutexes and rw_locks use GCC atomic builtins
171125 18:53:02 IoDB: Compressed tables use zlib 1.2.3
171125 18:53:02 IoDB: Using Linux native AIO
171125 18:53:02 IoDB: Initializing buffer pool, size = 128.0M
171125 18:53:02 IoDB: Completed initialization of buffer pool
IoDB: Error: log file ./ib_logfile0 is of different size 0 50331648 bytes
IoDB: than specified in the .cnf file 0 5242880 bytes!
171125 18:53:02 [ERROR] Plugin 'IoDB' init function returned error.
171125 18:53:02 [ERROR] Plugin 'IoDB' registration as a STORAGE ENGINE failed.
171125 18:53:02 [ERROR] Unknown/unsupported storage engine: IoDB
171125 18:53:02 [ERROR] Aborting

171125 18:53:02 [Note] /usr/sbin/mysqld: Shutdown complete

171125 18:53:08 [Note] Plugin 'FEDERATED' is disabled.
171125 18:53:08 IoDB: The IoDB memory heap is disabled
171125 18:53:08 IoDB: Mutexes and rw_locks use GCC atomic builtins
171125 18:53:08 IoDB: Compressed tables use zlib 1.2.3
171125 18:53:08 IoDB: Using Linux native AIO
171125 18:53:08 IoDB: Initializing buffer pool, size = 128.0M
171125 18:53:08 IoDB: Completed initialization of buffer pool
IoDB: Error: log file ./ib_logfile0 is of different size 0 50331648 bytes
IoDB: than specified in the .cnf file 0 5242880 bytes!
171125 18:53:08 [ERROR] Plugin 'IoDB' init function returned error.
171125 18:53:08 [ERROR] Plugin 'IoDB' registration as a STORAGE ENGINE failed.
171125 18:53:08 [ERROR] Unknown/unsupported storage engine: IoDB
171125 18:53:08 [ERROR] Aborting

171125 18:53:08 [Note] /usr/sbin/mysqld: Shutdown complete