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.
Exhibit
Refer to the exhibit.
# df -h /data
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg01-data 100G 99G 1.0G 99% /data
# cat /etc/fstab
/dev/mapper/vg01-data /data xfs defaults 0 0
# lsblk /dev/sdb
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sdb 8:16 0 150G 0 disk
└─sdb1 8:17 0 150G 0 part
└─vg01-data 253:1 0 100G 0 lvm /data
# vgs
VG #PV #LV #SN Attr VSize VFree
vg01 1 1 0 wz--n- 150.00g 50.00g
The /data filesystem is at 99% capacity. The LVM setup shows that the volume group has 50GB free space, but the logical volume is only 100GB. What is the correct sequence of commands to increase the filesystem to use all available space in the volume group?
Option B is correct because the volume group has 50GB free space, so you need to extend the logical volume by +50GB (not to 50GB) using `lvextend -L +50G`, and then grow the XFS filesystem with `xfs_growfs /data` (the mount point, not the block device). The `+` sign indicates an addition to the current size, while omitting it would set an absolute size.
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 filesystem must be grown after the LV is extended, not before.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse the `-L` syntax (absolute vs. relative size) and mistakenly use `resize2fs` for XFS, or reverse the order of commands.
Trap categories for this question
Command / output trap
The first command sets the LV to 50G total (not +50G), which would shrink it; also, xfs_growfs typically uses mount point, not device.
Detailed technical explanation
How to think about this question
LVM uses physical extents (PEs) to allocate space; `lvextend -L +50G` adds 50GB of PEs from the volume group to the logical volume. XFS is an online-growable filesystem but cannot be shrunk; `xfs_growfs` reads the new block device size and expands the filesystem to match, operating on the mount point for safety. In a real-world scenario, if the filesystem were ext4, you would use `resize2fs` instead of `xfs_growfs`.
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: lvextend -L +50G /dev/mapper/vg01-data && xfs_growfs /data — Option B is correct because the volume group has 50GB free space, so you need to extend the logical volume by +50GB (not to 50GB) using `lvextend -L +50G`, and then grow the XFS filesystem with `xfs_growfs /data` (the mount point, not the block device). The `+` sign indicates an addition to the current size, while omitting it would set an absolute size.
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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