For complete DR backup i would suggest REAR:
It consists of a 2 step backup concept.
In the first step it creates a minimal bootable image from your running system which can be used to recover the complete system layout with partitions, lvm volume etc. Thats pretty cool because during recovery you have basically the system running you used before with all the right toolset/kernel version etc. You can also use it to migrate your system to new hardware, which works in most of the cases.
In a second step it creates regular Backups via various backends which can then be used to recover the data on the volumes.
i have created an qemu image for those interested to try. I was however unable to rebuild the complete system like the manual states, because samba.org seems currently down, and the package manager wanted to pull rsync :)