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XK0-006 Set up a new LVM volume Practice Question
An administrator needs to set up a new LVM volume. Which two commands are necessary in the initial setup before creating a logical volume?
⚠ Common exam trap
Test-takers frequently confuse the order of LVM commands, thinking `lvcreate` is the first step, but LVM requires a strict hierarchy: PV → VG → LV, and `pvcreate` and `vgcreate` must precede any logical volume creation.
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
✓
vgcreate
Before creating a logical volume (LV), you must first prepare the physical storage devices and then group them into a volume group. The `pvcreate` command initializes a block device (e.g., /dev/sdb) as a physical volume (PV) by writing LVM metadata to it. The `vgcreate` command then creates a volume group (VG) from one or more PVs, which serves as the pool of storage from which logical volumes are carved. Without these two steps, the LVM subsystem has no recognized storage to allocate.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
mount
Why it's wrong here
mount attaches the filesystem; it is the final step after filesystem creation.
- ✗
lvcreate
Why it's wrong here
lvcreate is used after the volume group exists to create a logical volume, not in the initial setup.
- ✓
vgcreate
Why this is correct
vgcreate creates a volume group from one or more physical volumes.
- ✓
pvcreate
Why this is correct
pvcreate initializes a disk or partition as a physical volume for LVM.
- ✗
mkfs
Why it's wrong here
mkfs creates a filesystem on a logical volume, which is performed after the logical volume is created.
Go deeper
Related to this question
Learn chapter
User and Group Administration
Key term
Logical volume
A logical volume is a virtual storage unit created from one or more physical hard drives that can be resized, moved, or snapshotted without disrupting the system.
Key term
Physical volume
A physical volume is a storage device or partition that is initialized for use by a volume manager, allowing it to be combined into logical storage pools.
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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.