[DB_NAME]: DB-name to recovery. /dev/shm Usage: First, check your memory if you can use shm directory. For recovery speed, I use /dev/shm/ directory. Process flow. 01. Stop DB service mysqld stop 02. Stop web-service. (If you don't use, block DB-connection by using firewall-cmd.) service httpd stop 03. Change DB-mode on server.cnf set innodb_force_recovery = 5 on /etc/my.cnf.d/server.cnf 04. Start DB for recovery. service mysqld start 05. Run DB-dump. mysqldump -u root -p --databases [DB_NAME] > /dev/shm/[DB_NAME].sql 06. Stop DB service mysqld stop 07. Change DB-mode on server.cnf (normal mode) set innodb_force_recovery = 0 on /etc/my.cnf.d/server.cnf 08. Backup old DB-files. (Run follows if you necessarily need backup.) mkdir /backup/DB_BackupTmp mv /backup/DB/ibdata1 /backup/DB_BackupTmp mv /backup/DB/ib_logfile0 /backup/DB_BackupTmp mv /backup/DB/ib_logfile1 /backup/DB_BackupTmp mv /backup/DB/[DB_NAME] /backup/DB_BackupTmp 09. Start DB service mysqld start 10