Basic Volume Group Management

Question 1

What do Volume Groups (VGs) do?

Answer 1

Organize physical storage devices into flexible storage pools

Question 2

Name key commands for VG management.

Answer 2

vgscan, vgcreate, vgdisplay, vgs

Question 3

What does vgscan do?

Answer 3

Scans the system for existing volume groups

Question 4

Syntax for vgscan?

Answer 4

vgscan

Question 5

Purpose of vgscan?

Answer 5

Detects all available volume groups, especially after adding disks or restoring backups

Question 6

What does vgcreate do?

Answer 6

Creates a new volume group from one or more physical volumes

Question 7

Syntax for vgcreate?

Answer 7

vgcreate <volume_group_name> <physical_volume></physical_volume></volume_group_name>

Question 8

Example of vgcreate?

Answer 8

vgcreate vg_projects /dev/sdb1

Question 9

Purpose of vgcreate?

Answer 9

Sets up a new volume group for managing logical volumes

Question 10

What does vgdisplay do?

Answer 10

Provides detailed information about a specific volume group

Question 11

Syntax for vgdisplay?

Answer 11

vgdisplay <volume_group_name></volume_group_name>

Question 12

Example of vgdisplay?

Answer 12

vgdisplay vg_projects

Question 13

Key details shown by vgdisplay?

Answer 13

VG Name : Name of the Volume Group

VG Size: Total storage size

Cur PV: Number of current physical volumes

Act PV: Number of active physical volumes

Alloc PE/Size: Allocated physical extents and their size

Free PE/Size: Free physical extents and their size

Question 14

What does vgs do?

Answer 14

Provides a summarized overview of all volume groups

Question 15

Syntax for vgs?

Answer 15

vgs

Question 16

Key columns in vgs output?

Answer 16

VG: Volume Group name

#PV: Number of physical volumes

#LV: Number of logical volumes

#SN: Number of snapshots

Attr: Attributes such as writable and resizable

Vsize: Total volume size

Vfree : Available free space

Question 17

Purpose of vgs?

Answer 17

Quick, comparative view of volume groups and their status