XK0-005 · Question #1679
The users of a Linux system are unable to use one of the application filesystems. The following outputs have been provided: Output 1: $ cd /app $ touch file touch: cannot touch 'file': Read-only…
The correct answer is A. umount /app. The kernel log shows Buffer I/O errors on /dev/sdc1, and the mount output confirms the filesystem was automatically remounted read-only (ro) as a self-protection mechanism. The resolution requires two steps: first unmount the filesystem with 'umount /app' so it is no longer in…
Question
Options
- Aumount /app
- Bxfs_repair /dev/sdc1
- Cumount /app
- Dfsck -y /dev/sdc1
How the community answered
(40 responses)- A70% (28)
- B15% (6)
- C10% (4)
- D5% (2)
Explanation
The kernel log shows Buffer I/O errors on /dev/sdc1, and the mount output confirms the filesystem was automatically remounted read-only (ro) as a self-protection mechanism. The resolution requires two steps: first unmount the filesystem with 'umount /app' so it is no longer in use, then run 'fsck -y /dev/sdc1' to check and repair the filesystem errors. Note: Options A and C are identical in this question (both say 'umount /app'), which appears to be a typo-the intended full fix is unmount followed by fsck. xfs_repair (Option B) is incorrect because the filesystem type is ext4, not XFS.
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