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LFCSStorageSingle Linux VMHard

Repair a damaged filesystem and mount it on demand

Scenario lfcs-sto-004 · about 7 minutes · 8 points · 6 grader checks

Recover an ext4 filesystem whose primary superblock is destroyed, then make autofs mount it read-only on first access.

  • e2fsck
  • superblock
  • filesystem-repair
  • autofs
  • automount

What you will practise

  • Recover ext4 from a backup superblock
  • Configure an autofs master entry and an indirect map
  • Mount a filesystem read-only on demand

Start this lab

With the CLI installed and signed in, this command provisions a fresh Ubuntu 24.04 LTS virtual machine on your Mac, applies the scenario setup and prints the task below.

goldenkube start lfcs-sto-004

Task

The task text exactly as the CLI shows it. Solve it on the machine, then run goldenkube submit.

The ext4 filesystem on /dev/loop12 (label ARCHIVE) no longer mounts. 1. Repair it so that it is clean again and its files are intact. 2. Configure the automounter so that accessing /mnt/auto/archive mounts that filesystem read-only on demand. The automounter must be running now and start at boot. Do not add the filesystem to /etc/fstab.

Requirements and details

Certification
LFCS · Linux Foundation Certified System Administrator
Domain
Storage
Difficulty
Hard
Environment
Single Linux VM
Recommended time
7 minutes
Points
8
Grader checks
6
Operating system
Ubuntu 24.04 LTS
Minimum CLI version
0.1.0
Scenario version
1
Published

Grading runs locally: 6 state checks read your machine when you submit; the scenario passes when every check passes. Hints, the reference solution and the check definitions are available only inside the CLI, not on this page.

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Independent community project, not affiliated with or endorsed by CNCF or The Linux Foundation. Lab results are practice feedback, not an exam score.