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hardMultiple ChoiceObjective-mapped

XK0-006 Practice Question: A technician runs the command `sudo lvdisplay…

Exhibit

Refer to the exhibit.

[user@server ~]$ sudo lvdisplay /dev/vg_root/lv_root
  --- Logical volume ---
  LV Path                /dev/vg_root/lv_root
  LV Name                lv_root
  VG Name                vg_root
  LV UUID                xxxxxx-xxxx-xxxx-xxxx-xxxx-xxxx-xxxxxx
  LV Write Access        read/write
  LV Creation host, time server01, 2023-01-15 10:30:00 -0500
  LV Status              NOT available
  # open                 0
  LV Size                50.00 GiB
  Current LE             12800
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:0

A technician runs the command `sudo lvdisplay /dev/vg_root/lv_root` and sees the output in the exhibit. The server fails to mount the root filesystem during boot. Which of the following should the technician do first?

⚠ Common exam trap

Many candidates assume a filesystem check (fsck) is always the first step for a mount failure, but LVM-specific issues like an inactive logical volume must be resolved before any filesystem-level operations can succeed.

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

Run `lvchange -ay /dev/vg_root/lv_root` to activate the logical volume.

The `lvdisplay` output shows the logical volume is present but its 'LV Status' is likely 'NOT available' (not shown in the exhibit but implied by the boot failure). The root filesystem cannot mount because the logical volume is inactive. The first corrective step is to activate it with `lvchange -ay /dev/vg_root/lv_root`, which makes the LV accessible to the kernel for mounting.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • ✗

    Run `fsck /dev/vg_root/lv_root` to check the filesystem.

    Why it's wrong here

    Incorrect: The logical volume is not available, so fsck cannot access it.

  • ✓

    Run `lvchange -ay /dev/vg_root/lv_root` to activate the logical volume.

    Why this is correct

    Correct: The LV status is 'NOT available'; this command activates it for use.

  • ✗

    Run `vgchange -ay` to activate the volume group.

    Why it's wrong here

    Incorrect: The volume group is already present and does not need reactivation; this command is too broad.

  • ✗

    Run `mount /dev/vg_root/lv_root /mnt` to mount the volume.

    Why it's wrong here

    Incorrect: The logical volume is not available, so mounting will fail.

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This XK0-006 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the XK0-006 exam.