The Linux Newbie Guide - pvscan Command

The Linux Newbie Guide

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Fundamentals

pvscan - Scanning for Physical Volumes (PV)

pvscan is a Linux command related to LVM (Logical Volume Manager) used to scan for physical volumes (PVs) on all available hard disks to identify any that are part of LVM.

The syntax for the pvscan command is as follows:
pvscan [OPTIONS].

Common options for the pvscan command include:

-a : Scan all available physical volumes, including those allocated to logical volume groups and unallocated physical volumes.
-l : Scan only physical volumes allocated to logical volume groups.
-v : Output more detailed information.

Example:

# pvscan ←Scans the hard disks to identify PVs (Physical Volumes)
  PV /dev/sda3     VG db_vg         lvm2 [<93.15 GiB / <74.52 GiB free]
  PV /dev/sda4     VG db_vg         lvm2 [<93.15 GiB / <93.15 GiB free]
  PV /dev/sdb9     VG centos        lvm2 [<18.00 GiB / 0 free]
  Total: 3 [204.29 GiB] / in use: 3 [204.29 GiB] / in no VG: 0 [0 ]

For more examples and operations related to pvscan and LVM, please refer to the provided link.