系统是debian 9.6
kernel版本是4.9
以前用debian 9可以挂载autofs
但最近重灌之后，不管怎么试都没办法，设定档是拿重灌前的
sudo systemctl status autofs.service
● autofs.service - Automounts filesystems on demand
Loaded: loaded (/lib/systemd/system/autofs.service; enabled; vendor preset: enabled)
Active: active (running) since Tue 2019-01-15 09:58:35 CST; 9min ago
Process: 1418 ExecStart=/usr/sbin/automount $OPTIONS