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.
A system administrator needs to extend a logical volume 'lv_data' in volume group 'vg_data' by adding a new 50GB disk. Which sequence of commands should be used (assuming the filesystem is XFS)?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
pvcreate, vgextend, lvextend, xfs_growfs
Option D is correct because the proper sequence to extend an XFS logical volume is: first, initialize the new disk as a physical volume with `pvcreate`; second, add it to the volume group with `vgextend`; third, extend the logical volume with `lvextend`; and finally, grow the XFS filesystem with `xfs_growfs`. XFS does not support shrinking and requires `xfs_growfs` (not `resize2fs`) for online growth.
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.
✗
pvcreate, vgextend, lvextend, resize2fs
Why it's wrong here
Incorrect. resize2fs is for ext4, not XFS.
✗
vgextend, lvcreate, pvcreate, xfs_growfs
Why it's wrong here
Incorrect. lvcreate creates a new LV, not extend, and order is wrong.
✗
vgextend, pvcreate, lvextend, xfs_growfs
Why it's wrong here
Incorrect. vgextend must come after pvcreate.
✓
pvcreate, vgextend, lvextend, xfs_growfs
Why this is correct
Correct. This is the proper sequence for extending an XFS LV.
Related concept
Read the scenario before looking for a memorised answer.
✗
pvcreate, lvextend, vgextend, fsck
Why it's wrong here
Incorrect. lvextend before vgextend fails, and fsck is not needed.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse `resize2fs` (for ext4) with `xfs_growfs` (for XFS), or incorrectly order the commands by adding the disk to the volume group before initializing it as a physical volume.
Detailed technical explanation
How to think about this question
Under the hood, LVM uses a metadata area on each physical volume to track allocation; `pvcreate` writes this metadata. `xfs_growfs` operates on a mounted XFS filesystem by expanding the allocation group structures to match the new block device size, and it can only grow, never shrink. In real-world scenarios, failing to run `xfs_growfs` after `lvextend` leaves the filesystem unaware of the extra space, causing no usable capacity increase.
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: pvcreate, vgextend, lvextend, xfs_growfs — Option D is correct because the proper sequence to extend an XFS logical volume is: first, initialize the new disk as a physical volume with `pvcreate`; second, add it to the volume group with `vgextend`; third, extend the logical volume with `lvextend`; and finally, grow the XFS filesystem with `xfs_growfs`. XFS does not support shrinking and requires `xfs_growfs` (not `resize2fs`) for online growth.
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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