The correct answer is that LVM metadata is stored in the volume group descriptor area (VGDA) on each physical volume, and the `pvck` command is the proper tool for verification. This is because the VGDA contains critical information about the physical volume itself, including its UUID, the volume group it belongs to, and the layout of physical extents, making it the central repository for metadata that must be consistent across all PVs in a volume group. On the Red Hat Certified System Administrator EX200 exam, this concept tests your understanding of LVM architecture and troubleshooting, often appearing in scenarios where a volume group fails to activate or a disk is moved between systems. A common trap is confusing `pvscan` or `pvdisplay` with verification—these only display metadata, while `pvck` actively checks its integrity without making changes. To remember this, think of the VGDA as the "DNA" of the physical volume, and `pvck` as the "health check" that reads that DNA for errors before any repair is attempted.
EX200 Configure local storage Practice Question
This EX200 practice question tests your understanding of configure local storage. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which TWO statements about Logical Volume Manager (LVM) metadata are correct?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The 'pvck' command can be used to check physical volume metadata.
Option A is correct because the 'pvck' command is specifically designed to check the metadata of physical volumes in LVM. It verifies the consistency and integrity of the PV metadata, including the volume group descriptor area (VGDA), without making changes. This is a diagnostic tool used before attempting repairs.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
The 'pvck' command can be used to check physical volume metadata.
Why this is correct
Correct: 'pvck' checks physical volume metadata.
Related concept
Read the scenario before looking for a memorised answer.
✗
The 'pvs' command can repair corrupted metadata.
Why it's wrong here
'pvs' only displays information; it does not repair metadata.
✗
The 'fsck' tool is used to verify LVM metadata.
Why it's wrong here
'fsck' checks filesystem integrity, not LVM metadata.
✓
Metadata is stored in the volume group descriptor area (VGDA) on each physical volume.
Why this is correct
Correct: VGDA contains metadata about the volume group.
Related concept
Read the scenario before looking for a memorised answer.
✗
LVM metadata is stored in /etc/lvm directory.
Why it's wrong here
Metadata is stored on the PVs themselves, not in /etc/lvm.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse the role of 'pvs' (a display tool) with a repair tool, or mistakenly think LVM metadata is stored in a configuration directory like /etc/lvm, when it is actually stored on the physical volumes themselves.
Detailed technical explanation
How to think about this question
LVM metadata is stored in the Volume Group Descriptor Area (VGDA) at the start of each physical volume, typically in the first few sectors. This metadata describes the volume group layout, logical volumes, and physical extents. The 'pvck' command reads this area and can detect corruption, while 'vgck' checks volume group metadata consistency across all PVs in the VG. In a real-world scenario, if a PV header is damaged, 'pvck --repair' can restore metadata from backups stored in the VGDA area.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the EX200 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Configure local storage — This question tests Configure local storage — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The 'pvck' command can be used to check physical volume metadata. — Option A is correct because the 'pvck' command is specifically designed to check the metadata of physical volumes in LVM. It verifies the consistency and integrity of the PV metadata, including the volume group descriptor area (VGDA), without making changes. This is a diagnostic tool used before attempting repairs.
What should I do if I get this EX200 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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