umount 提示 is busy 解决方法 (In some cases useful info about processes that use the device is f)

mount: /opt/k8s: target is busy.
(In some cases useful info about processes that use
the device is found by lsof(8) or fuser(1))

isof /opt/k8s 或 fuser -m -v /opt/k8s
在这里插入图片描述

kill -9 2812 即可

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