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vgdisplay – Displays information about LVM volume groups

The vgdisplay command is used to display information about the LVM (Logical Volume Manager) volume groups that are currently active on a Linux system. This command provides a detailed overview of the volume group’s physical and logical volumes, as well as the attributes that define them.

Overview

The vgdisplay command is used to display information about the LVM volume groups that are currently active on a Linux system. This command provides a detailed overview of the volume group’s physical and logical volumes, as well as the attributes that define them.

To use the vgdisplay command, simply enter the command followed by the name of the volume group you want to display information about. For example:

vgdisplay vg01

This will display detailed information about the vg01 volume group, including the number of physical volumes, the total size of the volume group, and the number of logical volumes that are currently active.

Examples

Here are some common examples of how the vgdisplay command can be used:

  • Display information about all volume groups on the system: 
    vgdisplay -v
  • Display information about a specific volume group: 
    vgdisplay vg01
  • Display information about a specific logical volume: 
    vgdisplay -v /dev/vg01/lv01

Options

The following table lists all available options for the vgdisplay command:

Option Description
-c, --colon Use colon-separated output instead of the default format
-C, --noheadings Do not print headings at the beginning of each section
-l, --logicalvolumes Display information about logical volumes
-o, --options Specify which fields to display
-s, --short Use short output format
-v, --verbose Use verbose output format

Troubleshooting Tips

Here are some common issues you may encounter when using the vgdisplay command, along with troubleshooting tips:

  • Error: Cannot open /dev/VolGroup00/LogVol00: No such file or directory

    This error usually occurs when the logical volume or volume group you are trying to display information about does not exist. Double-check the name of the volume group or logical volume and try again.

  • Error: Failed to read physical volume “/dev/sdb1”

    This error usually occurs when the physical volume that is part of the volume group is not available or has been removed. Check the status of the physical volumes using the pvdisplay command.

Notes

  • The vgdisplay command is part of the LVM (Logical Volume Manager) package, which is typically installed by default on most Linux distributions.
  • The information displayed by the vgdisplay command can be very useful for troubleshooting issues with storage and disk space on a Linux system.
  • The vgdisplay command should be used in conjunction with other LVM commands, such as pvdisplay and lvdisplay, to get a complete picture of the storage configuration on a Linux system.

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