Thanks for your reply, My comments below: On Sat, Nov 9, 2013 at 5:08 PM, Arun Khan <knura9 at gmail.com> wrote: > On Sat, Nov 9, 2013 at 6:28 PM, Peter Peltonen <peter.peltonen at gmail.com> > wrote: > > > > Now I would need to figure out how to boot to the CentOS installation on > > server A/sdb and I would like to ask about a few details: > > > > - I am confused about the logical volume names: which ones should I use > on > > the new server's fstab, the old ones (rsynced from server B/sda) or the > > ones I used when creating the logical volumes from server A? If I need to > > use the new ones, should I update the names also somewhere else than > fstab? > > > > Yes, you need to use the new LVM device names in the /etc/fstab. > I started wondering, where are the device names stored? As I created them from the A/sda system I started thinking that perhaps they were written somewhere into the A/sda system and if I boot to A/sdb system they are no longer valid... > > - As the new installation will boot from sdb instead of sda, do I need to > > update this information somewhere (like /boot/grub/device.map) ? > > > > It depends are you going to remove 'sda' from the server. In which > case your sdb will become the sda. You will need to install grub on > this disk. > For now, I would like to keep both systems. At some point I might need to boot the A/sdb system in a totally new machine (in which case the system will be sda again...). Regards, Peter