A stop job is running for MariaDB database service(Waiting for page_cleaner) 原因及解决方法。
在关机或重启的时候发现：
A stop job is running for MariaDB database service.
居然需要耗时几十分钟，强制关机重启后，利用以下命令检查日志：
1$ journalctl -u mariadb.service
2Feb 25 14:37:57 archlinux mysqld[580]: 2020-02-25 14:37:57 0 [Note] InnoDB: Waiting for page_cleaner to finish flushing of buffer pool
3Feb 25 14:38:57 archlinux mysqld[580]: 2020-02-25 14:38:57 0 [Note] InnoDB: Waiting for page_cleaner to finish flushing of buffer pool
4Feb 25 14:39:57 archlinux mysqld[580]: 2020-02-25 14:39:57 0 [Note] InnoDB: Waiting for page_cleaner to finish flushing of buffer pool
5Feb 25 14:40:58 archlinux mysqld[580]: 2020-02-25 14:40:58 0 [Note] InnoDB: Waiting for page_cleaner to finish flushing of buffer pool
6...
解决
经过一番搜索，可以通过以下命令解决：
1$ timedatectl set-local-rtc 0
相关链接：
How to fix MariaDB when it gets stuck during shutdown (Waiting for page_cleaner)?