[CentOS] Mirroring Hard Drive

>brute force approach...
>
>    dd if=/dev/sda of=/dev/sdb bs=16384

That's probably the most safest, but you'll have to remove it before
you boot if you use lvm right?

Doesn't clonzilla support lvm? Could you boot off a live cd to only copy
actual data which should be quick in your case?

jlc