fuser -cu /usr/local/openresty/nginx/html/down/ fuser -ck /usr/local/openresty/nginx/html/down/ fuser -c /usr/local/openresty/nginx/html/down/ umount /usr/local/openresty/nginx/html/down/
CentOS下强行umount卸载设备,布布扣,bubuko.com
原文：http://www.cnblogs.com/kgdxpr/p/3897505.html