LPIC-2 Practice Question: Block Devices, Filesystems and Advanced Storage
An administrator creates a new XFS filesystem on /dev/vg/data and needs to mount it at /data with noatime and a stripe unit of 1 MiB. Which /etc/fstab entry is correct?
⚠ Common exam trap
Many candidates confuse the unit of measurement: candidates often forget that `sunit` is in 512-byte blocks, not bytes or kilobytes, leading them to choose `sunit=1024` (which is only 512 KiB) instead of the correct `sunit=2048` for 1 MiB.
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
✓
/dev/vg/data /data xfs defaults,noatime,sunit=2048 0 0
The `sunit` mount option specifies the stripe unit in 512-byte blocks. A stripe unit of 1 MiB equals 2048 blocks (1 MiB = 1024 KiB = 2048 * 512 bytes). The `noatime` option disables access time updates. This entry correctly mounts the XFS filesystem at /data with the required parameters.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
/dev/vg/data /data xfs defaults,noatime,sunit=2048 0 0
Why this is correct
sunit=2048 sectors = 1 MiB stripe unit, with noatime.
- ✗
/dev/vg/data /data xfs defaults,noatime,swidth=2048 0 0
Why it's wrong here
swidth sets the stripe width, not the stripe unit.
- ✗
/dev/vg/data /data xfs defaults,noatime,allocsize=1m 0 0
Why it's wrong here
allocsize controls space allocation chunk size, not stripe unit.
- ✗
/dev/vg/data /data xfs defaults,noatime,sunit=1024 0 0
Why it's wrong here
sunit=1024 gives a stripe unit of 512 KiB, not 1 MiB.
Go deeper
Related to this question
About these practice questions
Courseiva writes every LPIC-2 question from scratch — 507 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This LPIC-2 practice question is part of Courseiva's free LPI 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 LPIC-2 exam.