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  • [Linux] umount目录提示device is busy的解决方法

    使用sshfs等方式挂载的目录出现问题时,使用umount卸载经常提示device is busy,如果仔细阅读错误提示就可以找到命令lsof和fuser命令。

    其实原因就是有进程占用当前目录,导致不允许卸载,只要找到占用进程问题就解决了:

    例,/mnt/test卸载:

    $ sudo fuser -m /mnt/test
    

    此时会列表进程信息:

    Cannot stat file /proc/52441/fd/132: Permission denied
    Cannot stat file /proc/52441/fd/135: Permission denied
    Cannot stat file /proc/52441/fd/136: Permission denied
    Cannot stat file /proc/52441/fd/139: Permission denied
    Cannot stat file /proc/52441/fd/149: Permission denied
    Cannot stat file /proc/52441/fd/151: Permission denied
    Cannot stat file /proc/52441/fd/164: Permission denied
    Cannot stat file /proc/52441/fd/169: Permission denied
    Cannot stat file /proc/52441/fd/173: Permission denied
    Cannot stat file /proc/52441/fd/186: Permission denied
    Cannot stat file /proc/52441/fd/188: Permission denied
    Cannot stat file /proc/52441/fd/196: Permission denied
    ...
    

    其中52441即为进程ID了,可以通过查看/proc/52441/cmdline确认进程对应程序

    其它就可以根据实际情况处理进程了,之后再执行 sudo umount /mnt/test即可卸载。

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  • 原文地址:https://www.cnblogs.com/arrongao/p/umount_dir.html
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