HowTo Change The LVM Volume Group Name That Includes The Root Partition
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This page describes the steps needed to change an LVM (Logical Volume Manager) Volume Group name which includes the the Root partition ("/"). The problem is that the Root partition LVM Device Mapper is referenced in different configuration files and embedded in the Kernel initramfs.
We will demonstrate the LVM Volume Group name change from "nst_localhost" to "nst20".
State Before LVM Volume Group Name Change
The Fedora System Storage Manager utility: ssm is used to display the current storage layout on the example system.
[root@localhost boot]# ssm list ------------------------------------------------------------------- Device Free Used Total Pool Mount point ------------------------------------------------------------------- /dev/sda 30.00 GB PARTITIONED /dev/sda1 500.00 MB /boot /dev/sda2 0.00 KB 29.51 GB 29.51 GB nst_localhost ------------------------------------------------------------------- --------------------------------------------------------- Pool Type Devices Free Used Total --------------------------------------------------------- nst_localhost lvm 1 0.00 KB 29.51 GB 29.51 GB --------------------------------------------------------- ---------------------------------------------------------------------------------------------------- Volume Pool Volume size FS FS size Free Type Mount point ---------------------------------------------------------------------------------------------------- /dev/nst_localhost/root nst_localhost 27.48 GB ext4 27.48 GB 19.18 GB linear / /dev/nst_localhost/swap nst_localhost 2.03 GB linear /dev/sda1 500.00 MB ext4 500.00 MB 364.40 MB part /boot ----------------------------------------------------------------------------------------------------