The Linux Newbie Guide - pvdisplay Command

The Linux Newbie Guide

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Fundamentals

pvdisplay - Display PV (Physical Volume) Information in LVM

The pvdisplay command is part of LVM (Logical Volume Manager) and is used to display information about physical volumes (PVs) in the LVM setup. It provides details about the following aspects of a PV:

PV name.
PV size.
Physical extent (PE) size on the PV.
VG (Volume Group) to which the PV belongs.
PV status (allocatable, used, exported, etc.).
Number of available PEs on the PV.
Number of allocated PEs on the PV.

Example:

# pvdisplay 
 --- Physical volume ---
 PV Name               /dev/sda3
 VG Name               db_vg
 PV Size               93.15 GiB / not usable 4.00 MiB
 Allocatable           yes 
 PE Size               4.00 MiB
 Total PE              23846
 Free PE               19077
 Allocated PE          4769
 PV UUID               Yu9ccW-0JnV-Lgvu-JmIt-kedx-94kK-Q6h84n

 --- Physical volume ---
 PV Name               /dev/sda4
 VG Name               db_vg
 (以下略)

For more pvdisplay examples and operations related to LVM, you can refer to the provided link.