XK0-006: CompTIA Linux+

By CompTIA · Question Mode

QuestionQ10

Troubleshooting

An administrator sees the following output when trying to unmount a filesystem: umount /data1: target is busy.

Which command should the administrator run next to find out why the filesystem is busy?

Explanation

lsof lists files that processes have open. Filtering its output for /data1 reveals processes using files within that mount point, which can prevent the filesystem from being unmounted.

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