Booting a Cloned Drive and booting with both drives plugged in.
I have a RHEL6 drive encrypted with LUKS (a rootvg and /boot). I want to clone it so dd seems promising or clonezilla. I dd the entire disk over and that drive works great in general. Swap the drive in, and it boots fine.
However, another scenario which I would like to account for is the delta of data not on the backed up drive. So my thought is to boot them both in the same system (say from ultra bay/USB) but it reads the wrong disk etc...
So I then go through the effort of trying to rename the LV PV update grub and fstab etc. to get it to see two separate drives (and properly see the other partition in Linux) , but I keep getting KPs. Not sure what I'm doing wrong.
Q: Has anyone done this before? Am I missing steps I wonder?
Q: OR Is there a better way?