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 of the following are required steps when migrating a logical volume from one physical volume to another in the same volume group?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Remove the source physical volume from the volume group with vgreduce after migration
Option C is correct because after using pvmove to relocate all physical extents from the source physical volume to the target, you must remove the source PV from the volume group using vgreduce to clean up the volume group metadata and free the device for other use. This step ensures the volume group no longer references the now-empty source PV.
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.
✗
Delete and recreate the logical volume on the new physical volume
Why it's wrong here
Deleting the LV would lose data; pvmove avoids this.
✗
Add the new physical volume to the volume group with vgextend if not already present
Why it's wrong here
The question says 'in the same volume group', so the target PV is already in the VG.
✓
Remove the source physical volume from the volume group with vgreduce after migration
Why this is correct
Once data is moved, the old PV can be removed from the VG.
Related concept
Read the scenario before looking for a memorised answer.
✓
Use pvmove to relocate the physical extents from the source to the target PV
Why this is correct
pvmove moves allocated extents to another PV in the same VG.
Related concept
Read the scenario before looking for a memorised answer.
✗
Extend the logical volume to include the new physical volume
Why it's wrong here
Extending is for adding space, not migration.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Red Hat often tests the misconception that you must extend the logical volume (Option E) or delete/recreate it (Option A) to move data between PVs, when in fact pvmove handles the migration transparently without LV modification.
Detailed technical explanation
How to think about this question
The pvmove command works by relocating physical extents (PEs) from the source PV to free PEs on the target PV within the same volume group, using a temporary mirroring mechanism under the hood to ensure data consistency. After migration, the source PV becomes empty and can be removed with vgreduce, which updates the LVM metadata to reflect the PV's absence. In real-world scenarios, this process is commonly used to replace failing disks or rebalance storage without downtime.
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: Remove the source physical volume from the volume group with vgreduce after migration — Option C is correct because after using pvmove to relocate all physical extents from the source physical volume to the target, you must remove the source PV from the volume group using vgreduce to clean up the volume group metadata and free the device for other use. This step ensures the volume group no longer references the now-empty source PV.
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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