问题详情：
我在我的一台 Raspberry Pi 4（8 GB）上运行了 MySQL v8 几个月，但是sudo service mysql start从早上起我就无法启动 mysql 并收到以下错误消息：
Job for mysql.service failed because the control process exited with error code.
See "systemctl status mysql.service" and "journalctl -xe" for details.
故障排除和分析
- 重新安装 MySQL 8
- 尝试使用上述命令启动 MySQL 服务，服务启动没有任何问题。
- 但是，当我从 /etc/mysql/mysql.conf.d/mysqld.cnf 文件更新数据目录时，问题再次出现。
这是否说明数据目录可能存在问题？有没有什么解决方案可以恢复这种情况？
执行结果：systemctl status mysql.service
mysql.service - MySQL Community Server
Loaded: loaded (/lib/systemd/system/mysql.service; enabled; vendor preset: enabled)
Active: failed (Result: exit-code) since Tue 2021-02-02 18:08:10 IST; 1min 16s ago
Process: 3285 ExecStartPre=/usr/share/mysql/mysql-systemd-start pre (code=exited, status=0/SUCCESS)
Process: 3294 ExecStart=/usr/sbin/mysqld (code=exited, status=2)
Main PID: 3294 (code=exited, status=2)
Status: "Server startup in progress"
错误日志
2021-02-02T12:38:03.012089Z 0 [System] [MY-010116] [Server] /usr/sbin/mysqld (mysqld 8.0.23-0ubuntu0.20.10.1) starting as process 3185
2021-02-02T12:38:03.059589Z 1 [System] [MY-013576] [InnoDB] InnoDB initialization has started.
2021-02-02T12:38:03.596555Z 1 [ERROR] [MY-013183] [InnoDB] Assertion failure: fil0fil.cc:10815:initial_fsize == (file->size * phy_page_size) thread 281473363472416
InnoDB: We intentionally generate a memory trap.
InnoDB: Submit a detailed bug report to http://bugs.mysql.com.
InnoDB: If you get repeated assertion failures or crashes, even
InnoDB: immediately after the mysqld startup, there may be
InnoDB: corruption in the InnoDB tablespace. Please refer to
InnoDB: http://dev.mysql.com/doc/refman/8.0/en/forcing-innodb-recovery.html
InnoDB: about forcing recovery.
12:38:03 UTC - mysqld got signal 6 ;
Most likely, you have hit a bug, but this error can also be caused by malfunctioning hardware.
Thread pointer: 0xaaaadfc38ef0
Attempting backtrace. You can use the following information to find out
where mysqld died. If you see no messages after this, something went
terribly wrong...
stack_bottom = ffff9fd7e690 thread_stack 0x46000
/usr/sbin/mysqld(my_print_stacktrace(unsigned char const*, unsigned long)+0x44) [0xaaaaceb08ae4]
/usr/sbin/mysqld(handle_fatal_signal+0x294) [0xaaaacdd1e484]
linux-vdso.so.1(__kernel_rt_sigreturn+0) [0xffffacbaf5d8]
/lib/aarch64-linux-gnu/libc.so.6(gsignal+0xd8) [0xffffac24ef58]
/lib/aarch64-linux-gnu/libc.so.6(abort+0xf4) [0xffffac23b50c]
/usr/sbin/mysqld(ut_dbg_assertion_failed(char const*, char const*, unsigned long)+0x26c) [0xaaaacedb993c]
/usr/sbin/mysqld(fil_tablespace_redo_extend(unsigned char*, unsigned char const*, page_id_t const&, unsigned long, bool)+0x4a8) [0xaaaaceeedd68]
/usr/sbin/mysqld(+0x1e79ba0) [0xaaaacec9aba0]
/usr/sbin/mysqld(+0x1e7aa44) [0xaaaacec9ba44]
/usr/sbin/mysqld(+0x1e7f670) [0xaaaaceca0670]
/usr/sbin/mysqld(recv_recovery_from_checkpoint_start(log_t&, unsigned long)+0x580) [0xaaaaceca1570]
/usr/sbin/mysqld(srv_start(bool)+0x1e68) [0xaaaaced6f7c8]
/usr/sbin/mysqld(+0x1dc8154) [0xaaaacebe9154]
/usr/sbin/mysqld(dd::bootstrap::DDSE_dict_init(THD*, dict_init_mode_t, unsigned int)+0x6c) [0xaaaace9205fc]
/usr/sbin/mysqld(dd::upgrade_57::do_pre_checks_and_initialize_dd(THD*)+0x164) [0xaaaacead8224]
/usr/sbin/mysqld(+0xf9d874) [0xaaaacddbe874]
/usr/sbin/mysqld(+0x21b9d84) [0xaaaacefdad84]
/lib/aarch64-linux-gnu/libpthread.so.0(+0x7f74) [0xffffac64ff74]
/lib/aarch64-linux-gnu/libc.so.6(+0xd73dc) [0xffffac2ee3dc]
Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query (0): is an invalid pointer
Connection ID (thread ID): 1
Status: NOT_KILLED
执行结果：sudo service mysql status
systemd[1]: mysql.service: Scheduled restart job, restart counter is at 5.
systemd[1]: Stopped MySQL Community Server.
systemd[1]: mysql.service: Start request repeated too quickly.
systemd[1]: mysql.service: Failed with result 'exit-code'.
systemd[1]: Failed to start MySQL Community Server.