HowTo Change The LVM Volume Group Name That Includes The Root Partition

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Revision as of 13:14, 1 January 2014 by Rwh (talk | contribs) (State Before Change)
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Overview

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        
----------------------------------------------------------------------------------------------------