Question 690
Original unofficial RHEL 10 RHCSA skill-check scenario: A filesystem refuses to unmount because a shell process has its current directory inside the mount. Which observation best confirms the intended outcome?
Explanation
Correct Answer
In this RHEL 10 system administration case: A filesystem refuses to unmount because a shell process has its current directory inside the mount. Underlying reason: Active file references can prevent safe unmount. The most direct, approved resolution is: Identify users of the mount with supported diagnostics and exit or stop those consumers before unmounting. Confirm it by checking: The filesystem unmounts cleanly and no open files remain. Sustain the fix by: Plan service quiescence during filesystem maintenance. This is the INTENDED response for the strongest objective verification result. It is a knowledge-check explanation, not a verified hands-on Red Hat exam answer;
Incorrect Answers
`findmnt` reports the intended source-to-target mapping and the app reads the right files. That is not sufficient for the reported RHEL task, because active file references can prevent safe unmount.
The mount appears on access and may unmount after the configured idle period. That is not sufficient for the reported RHEL task, because active file references can prevent safe unmount.
The original XFS data remains intact and the replacement capacity plan is documented. That is not sufficient for the reported RHEL task, because active file references can prevent safe unmount.