Editing Cloning ZFS root

* List partitions
 parted
 unit s
 p

* Clone start of disk 
 dd if=/dev/sdb bs=512 of=80gb.img count=22527 conv=nocreat,notrunc

* Create loop device for partitions
 kpartx -a 80gb.img

* Create new pool
 zpool create apool /dev/mapper/loop0p2

* Create snapshot on source pool
 zfs snapshot -r rpool@cptovm

* Send to new pool
 zfs send -R rpool@cptovm | pv | zfs receive -Fd apool

* Export new pool
 zpool export apool

* Convert to VMWare image
 qemu-img convert -O vmdk ~/VirtualBox\ VMs/zolnascp/80gb.img 80gb.vmdk

* Replace new image in .vmx
* Use Debian ZFS LiveCD in VM to boot from image
* Import apool as rpool
 zpool import apool rpool -R /mnt

* mount grub partition
 mount /dev/sda1 /mnt/boot/grub

* Setuo chroot env 
 chroot /mnt
 mount -t sysfs sys /sys
 mount /proc
 mount /dev

* Create new zpool.cache 
 zpool set cachefile=/etc/zfs/zpool.cache rpool

* set bootfs
 zpool set bootfs=rpool/ROOT/ubuntu-1 rpool 

* Update initramfs (should use new cache file) [https://github.com/zfsonlinux/pkg-zfs/wiki/HOWTO-install-Ubuntu-to-a-Native-ZFS-Root-Filesystem]
 update-initramfs -c -k all
 update-grub
 grub-install /dev/sda

That's it...