Match each LVM term to its definition.
Drag a concept onto its matching description — or click a concept then click the description.
A storage device or partition used by LVM
A pool of physical volumes that can be allocated to logical volumes
A virtual block device created from a volume group
The smallest allocatable unit in a physical volume
Maps to a physical extent in a logical volume
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Physical Volume (PV): A physical disk or partition that is initialized for use by LVM.
In LVM, Physical Volumes (PVs) are physical disks/partitions; Volume Groups (VGs) pool them; Logical Volumes (LVs) are created from VGs; Physical Extents (PEs) are the smallest allocation units on PVs. Common confusions involve swapping VG and LV definitions or confusing PE with LV.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Physical Volume (PV): A physical disk or partition that is initialized for use by LVM.
Why this is correct
A Physical Volume is the base storage unit, typically a disk partition or entire disk, that LVM uses.
Volume Group (VG): A pool of storage that combines multiple Physical Volumes.
Why this is correct
A Volume Group aggregates physical volumes into a single storage pool from which logical volumes are created.
Logical Volume (LV): A virtual block device that can be used as a filesystem or swap.
Why this is correct
A Logical Volume is the final device presented to the system, similar to a partition but more flexible.
Physical Extent (PE): The smallest allocatable unit of space on a Physical Volume.
Why this is correct
Physical Extents are fixed-size chunks of a physical volume that map to logical extents.
Logical Volume (LV): The smallest allocatable unit of space on a Physical Volume.
Why it's wrong here
Incorrect — this describes a Physical Extent, not a Logical Volume.
Volume Group (VG): A virtual block device that can be used as a filesystem.
Why it's wrong here
Incorrect — this describes a Logical Volume, not a Volume Group.
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