Rename Linux Volume Groups and Logical Volumes
If you are decided to rename your Linux LVM Volume Groups or Logical Volumes then here is how: Rename a volume group: # vgrename /dev/vg_old /dev/vgnewname Rename a logical volume: # lvrename /dev/vg_name/lv_old /dev/vg_name/lv_newname Make sure to modify the respective entries in fstab as well: # vi /etc/fstab /dev/mapper/vg_old-lv_old /var ext4 defaults 1 1 to /dev/mapper/vgnewname-lv_newname /var ext4 defaults 1 1 And if you are renaming your root partition VG or LV, then grub menu file also needs to be modified in order for server to find your vmlinuz kernel image under root directory during boot process: # vi /boot/grub/menu.lst kernel /vmlinuz-2.6.32-431.el6.x86_64 ro root=/dev/mapper/vg_old-lv_root rd_NO_LUKS rd_LVM_LV=vg_old/lv_root LANG=en_US.UTF-8 rd_LVM_LV=vg_old/lv_swap to kernel /vmlinuz-2.6.32-431.el6.x86_64 ro root=/dev/mapper/vgnewname-lv_root rd_NO_LUKS rd_LVM_LV=vg_old/lv_root LANG=en