LFCS Certification Storage Management with LVM 3

Question 1

Which LVM logical volume type stripes data across multiple physical volumes to improve read/write performance?

Accepted Answer

Striped LV

Answer

A striped logical volume distributes data across multiple PVs in chunks, similar to RAID 0, improving throughput.

Question 2

What command creates a striped LV named lv_stripe with 2 stripes of 64KB stripe size from vg0?

Accepted Answer

Both A and B are correct

Answer

Both -i/-I and --stripes/--stripesize are equivalent syntaxes; stripe size 64 (in KB) requires at least 2 PVs with free extents.

Question 3

In LVM thin provisioning, what is a 'thin pool'?

Accepted Answer

A special LV that provides storage to multiple thinly-provisioned LVs on demand

Answer

A thin pool is a specially-created logical volume that acts as a shared storage reservoir; thin LVs draw actual space from it only when written.

Question 4

Which command creates a thin pool named tp0 of 20G within vg0?

Accepted Answer

lvcreate -L 20G -T vg0/tp0

Answer

The -T (or --thin) flag combined with -L and a pool name creates a thin pool logical volume.

Question 5

An LVM snapshot is created but quickly runs out of space. What happens to the original logical volume?

Accepted Answer

The snapshot is invalidated and becomes unusable

Answer

When a classic LVM snapshot exhausts its allocated space, the snapshot is marked invalid (not the origin), and the origin continues operating normally.

LFCS Certification Practice Test

LFCS Certification Practice Test

LFCS Certification Storage Management with LVM 3