linux 卸载 umount 提示device is busy

linux 卸载 umount 提示device is busy

思路：先杀掉挂载的目录（如：/usr1/）这个进程

fuser -v /usr1/

再卸载
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原文地址：https://www.cnblogs.com/hblthink/p/8552635.html