vgcreate – Used to Create LVM Volume Groups

The vgcreate command is used to create a new LVM (Logical Volume Manager) volume group. The LVM is a disk management system that allows you to create logical volumes that span multiple physical disks. The vgcreate command creates a new volume group and assigns physical volumes to it. Once a volume group is created, you can create logical volumes within it.

Overview

The basic syntax of the vgcreate command is as follows:

vgcreate [OPTIONS] VGNAME PV...

Where VGNAME is the name of the new volume group and PV... is a space-separated list of one or more physical volumes to include in the volume group.

For example, to create a new volume group named myvg that includes two physical volumes (/dev/sdb1 and /dev/sdc1), you would run the following command:

vgcreate myvg /dev/sdb1 /dev/sdc1

Once the volume group has been created, you can use the lvcreate command to create logical volumes within it.

Options

The following table lists the available options for the vgcreate command:

Option Description
-c, --clustered Create a clustered volume group
-M, --maxphysicalvolumes Set the maximum number of physical volumes allowed in the volume group
-s, --physicalextentsize Set the physical extent size for the volume group
-v, --verbose Display verbose output
-Z, --zero Fill the first few sectors of each physical volume with zeros

Troubleshooting Tips

  • If you receive an error message stating that the physical volume is already in use, make sure that it is not already part of another volume group.
  • If you receive an error message stating that the volume group already exists, choose a different name for your new volume group.

Notes

  • The vgcreate command can only be run by the root user or a user with sudo privileges.
  • It is recommended that you use a consistent naming convention for your volume groups and physical volumes to make it easier to manage and identify them.
  • When creating a new volume group, it is best practice to include multiple physical volumes to ensure redundancy and prevent data loss in case of a hardware failure.