把配置文件发一下

# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html

[mysqld]
#
# Remove leading # and set to the amount of RAM for the most important data
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
# innodb_buffer_pool_size = 128M
#
# Remove leading # to turn on a very important data integrity option: logging
# changes to the binary log between backups.
# log_bin
#
# Remove leading # to set options mainly useful for reporting servers.
# The server defaults are faster for transactions and fast SELECTs.
# Adjust sizes as needed, experiment to find the optimal values.
# join_buffer_size = 128M
# sort_buffer_size = 2M
# read_rnd_buffer_size = 2M
#datadir=/var/lib/mysql
#socket=/var/lib/mysql/mysql.sock
character_set_server=utf8mb4
collation-server=utf8mb4_general_ci
init_connect='SET collation_connection = utf8mb4_general_ci'
init_connect='SET NAMES utf8mb4'
lower_case_table_names=1
max_connections=1500
long_query_time=2
slow_query_log=1
slow_query_log_file=/home/mysql/logs/slow-query.log
datadir=/home/mysql/data
socket=/var/lib/mysql/mysql.sock



port=13306
##innodb_force_recovery = 6
##innodb_purge_threads = 1

innodb_file_per_table= 1
innodb_open_files= 5000
innodb_buffer_pool_size= 10G
innodb_write_io_threads= 16
innodb_read_io_threads= 16
innodb_thread_concurrency = 0
innodb_purge_threads= 1
innodb_flush_log_at_trx_commit= 2
innodb_log_buffer_size=16M
innodb_log_file_size=512M
innodb_log_files_in_group= 5
innodb_max_dirty_pages_pct= 90
innodb_lock_wait_timeout= 120
innodb_adaptive_hash_index=0
key_buffer_size=8388608
read_buffer_size=131072
sort_buffer_size=275247
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0

#log-bin=/home/mysql/logs/binlog
server_id=2
relay_log=/home/mysql/logs/relay-bin
log_slave_updates=1
expire_logs_days=30
read_only=on
#readonly=1
# Recommended in standard MySQL setup
##sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
sql_mode='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION'

explicit_defaults_for_timestamp=true
#skip-grant-tables=on
binlog_format=row
gtid_mode=ON
enforce_gtid_consistency=ON
log_slave_updates=1
log-bin=/home/mysql/binlog/binlog.bin

[mysqld_safe]
#log-error=/var/log/mysqld.log
#pid-file=/var/run/mysqld/mysqld.pid
log-error=/home/mysql/logs/mysqld.log
pid-file=/home/mysql/mysqld.pid

根据MySql的提示： http://dev.mysql.com/doc/refman/5.6/en/forcing-innodb-recovery.html  ， innodb_force_recovery  设置下级别 1-6  从 1开始尝试， 这个启动下，看报错信息应该不会丢失数据。 不过现在已经挂了，就做一个冷备份吧 。然后在进行尝试

innodb_force_recovery  =6 设置了该参数也无法启动，这个问题应该不是表空间损坏的问题.

如果mysql实例都无法启动的话，确实是怀疑表空间已经损坏了。

建议备份数据目录和日志目录，通过修复表空间的方式恢复。