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Asked: 2026-05-10T13:42:31+00:00

I have an NFS-mounted directory on a Linux machine that has hung. I’ve tried

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I have an NFS-mounted directory on a Linux machine that has hung. I’ve tried to force an unmount, but it doesn’t seem to work:

$ umount -f /mnt/data $ umount2: Device or resource busy $ umount: /mnt/data: device is busy

If I type ‘mount‘, it appears that the directory is no longer mounted, but it hangs if I do ‘ls /mnt/data‘, and if I try to remove the mountpoint, I get:

$ rmdir /mnt/data rmdir: /mnt/data: Device or resource busy

Is there anything I can do other than reboot the machine?

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1 Answer

  1. You might try a lazy unmount:

    umount -l
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