vgs - Display VG (Volume Group) Information and Attributes

The vgs command is part of the Logical Volume Manager (LVM) toolset and is used to display information and attributes about Volume Groups (VGs) in the LVM configuration.

The vgs command provides information about VGs, including the following columns:

• VG: The name of the Volume Group.
• #PV: The number of Physical Volumes (PVs) in the VG.
• #LV: The number of Logical Volumes (LVs) in the VG.
• #SN: The number of snapshots associated with the VG.
• Attr: Attributes of the VG, indicating its status and characteristics.
• VSize: The total size of the VG.
• VFree: The amount of free space available in the VG.

Commonly used options for the vgs command include:

• -a: Display information about all VGs, including those that are normally hidden.
• -o: Specify the columns to be displayed.
• -r: Sort the output in reverse order.

For example, running the vgs command without options will display information about all VGs on the system, including their names, the number of PVs and LVs, attributes, and sizes:

# vgs
 VG     #PV #LV #SN Attr   VSize    VFree 
 centos   1   1   0 wz--n-  <18.00g       0 
 db_vg    2   1   0 wz--n- <186.30g <167.67g 

In this example, you can see information about two VGs named "centos" and "db_vg". The columns provide details about the number of PVs, LVs, snapshots, attributes, total size ("VSize"), and free space ("VFree)" for each VG.

The vgs command is useful for gaining insights into the VG configuration, which can be crucial for managing storage in LVM effectively.