The "Duplicate VG name" error in Linux is usually seen when using the Logical Volume Manager (LVM) to manage disk partitions. This error occurs when two or more volume groups (VGs) have the same name, which is not allowed in LVM.
To fix this error, you need to ensure that each VG has a unique name. You can use the vgs command to view the VGs on your system and their names.
For example, to view the VGs on your system, you can use the following command:
vgs
This will display a list of VGs and their names. If you see two or more VGs with the same name, you will need to rename one of them to make it unique.
To rename a VG, you can use the vgrename command. For example, to rename the VG server1 to server2, you can use the following command:
vgrename server1 server2
This will rename the VG server1 to server2, and resolve the "Duplicate VG name" error.
You can find more information about the vgrename command and other LVM management utilities in the LVM man pages by running man vgrename and man lvm in a terminal.