[CentOS] Changing disk UUID after cloning

Fri May 24 05:02:47 UTC 2013
Michael Hennebry <hennebry at web.cs.ndsu.nodak.edu>

On Wed, 22 May 2013, Glenn Eychaner wrote:

> So, I have a CentOS 6 system, and I want to make several clones of it.  I'm using Clonezilla to clone the drives; that's no problem.  But the drive UUIDs are driving me up the wall. After cloning, the two drives have the same UUID, but I'd like each clone to have different UUIDs so there's no possibility of a conflict when I am running diagnostics with two drives installed, etc. But when I change the UUID of the /boot or / partition (even if I update /etc/fstab), the system won't boot; it GRUBs OK (after I use recovery mode to rerun grub-install), but never gets to the 'Welcome to CentOS " message.  Do I need to "rebless" vmlinuz or initrd or initramfs in the /boot partition if I change the drive UUID?

tunee2fs or reisrfstune can probably do what you want.

> Or should I just ignore UUID and go back to using labels in /etc/fstab (which is what I did in CentOS 5)?

I'd use labels and I'd make them systematic labels,
e.g. disklabel-partitionlabel.
This is likely to start another religious flame war.

Michael   hennebry at web.cs.ndsu.NoDak.edu
"On Monday, I'm gonna have to tell my kindergarten class,
whom I teach not to run with scissors,
that my fiance ran me through with a broadsword."  --  Lily