I recently have an hdd failure and I try to restore Griffith (https://github.com/micjahn/Griffith) database from a /var/lib/mysql/griffith file copy. my new computer use a more recent version of mysql:
original : 5.7.19-0ubuntu new : 5.7.20-0ubuntu
I read a many thread about innoDB database recovery and I succeed to restore many tables but the main table (movies) fail to get restored.
Here is what i do :
create a new database find table structure with https://recovery.twindb.com/ Recreate tables use for all tables : ALTER TABLE mytable DISCARD TABLESPACE; copy backuped files use for all tables : ALTER TABLE mytable IMPORT TABLESPACE;
on this last step on movies table, it fails and mysql server terminate.
After some analyse, i find out that original database was created with utf8 encoding (twindb script was using latin1). But it do not fix the issue.
I also change mysql config with
It helps, doing a select count(*) give some info but i cannot dump the table to make a real backup
In mysql logs i have this error when running the IMPORT TABLESPACE command
[...many errors and warnings...] [ERROR] InnoDB: Table `mysql`.`innodb_table_stats` not found. [ERROR] InnoDB: Fetch of persistent statistics requested for table `griffith`.`movies` but the required system tables mysql.innodb_table_stats and mysql.innodb_index_stats are not present or have unexpected structure. Using transient stats instead. [ERROR] InnoDB: Trying to access page number 1647523377 in space 238, space name griffith/movies, which is outside the tablespace bounds. Byte offset 0, len 16384, i/o type read. If you get this error at mysqld startup, please check that your my.cnf matches the ibdata files that you have in the MySQL server. [ERROR] InnoDB: Server exits.
Can someone help me ?
Thanks ! BR.
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