After running the command umount /mnt, the following error message is displayed: umount: /mnt: device is busy. What is a common reason for this message?
A.
The kernel has not finished flushing disk writes to the mounted device.
B.
A user has a file open in the /mnt directory.
C.
Another file system still contains a symlink to a file inside /mnt.
D.
The files in /mnt have been scanned and added to the locate database.
E.
The kernel thinks that a process is about to open a file in /mnt for reading.
The common reason for the error message "umount: /mnt: device is busy" is that a user has a file open in the /mnt directory, which prevents the device from being unmounted. Other possible reasons could include processes running on the device, active network connections or open file handles to files on the device.
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linux_admin
2 years, 2 months ago