grub2 madness continued: upgrade from grub-legacy

/usr/sbin/grub-probe: error: cannot find a GRUB drive for /dev/xvda2.  Check your device.map.
Auto-detection of a filesystem of /dev/xvda2 failed.
Please report this together with the output of "/usr/sbin/grub-probe --device-map=/boot/grub/device.map --target=fs -v /boot/grub" to <[email protected]>