/etc/init.d/mysql stop
cp /var/lib/mysql/ib_logfile0 /var/lib/mysql/ib_logfile0.bak
cp /var/lib/mysql/ib_logfile1 /var/lib/mysql/ib_logfile1.bak
Add the following line into /etc/my.cnf
innodb_force_recovery = 4
/etc/init.d/mysql start
Comment out innodb_force_recovery in /etc/my.cnf
Restart mysqld