mysql宕机，导致innodb_force_recovery恢复不了

https://serverfault.com/questions/698038/mysql-innodb-recovery-from-datafiles

https://serverfault.com/questions/851342/mysql-crashed-and-not-starting-even-after-adding-innodb-force-recovery

https://stackoverflow.com/questions/20334791/mysql-crash-innodb-recovery-not-working-trying-another-way

https://serverfault.com/questions/487159/what-is-the-ibdata1-file-in-my-var-lib-mysql-directory

https://serverfault.com/questions/698038/mysql-innodb-recovery-from-datafiles

https://forums.cpanel.net/resources/innodb-corruption-repair-guide.395/

https://dba.stackexchange.com/questions/155251/possibility-of-fixing-corrupt-mysql-database

https://twindb.com/recover-corrupt-mysql-database/

https://twindb.com/undrop-tool-for-innodb/

未完待定

https://www.cnblogs.com/xinysu/p/6586386.html