fix(lvm,cryptroot extensions): introduce another variable to keep track of the physical partition/uuid and rootdevice/uuid seperately

extensions/lvm.sh

@@ -72,12 +72,6 @@ function post_create_partitions__setup_lvm() {
 
 function prepare_root_device__create_volume_group() {
 
-	LOOP=$(losetup -f)
-	[[ -z $LOOP ]] && exit_with_error "Unable to find free loop device"
-	check_loop_device "$LOOP"
-	losetup $LOOP ${SDCARD}.raw
-	partprobe $LOOP
-
 	display_alert "Using LVM root" "${EXTENSION}" "info"
 	vgscan
 	vgchange -a y ${LVM_VG_NAME}
@@ -97,4 +91,4 @@ function post_umount_final_image__close_lvm() {
 	# Deactivat the Volume Group
 	vgchange -a n ${LVM_VG_NAME}
 	display_alert "LVM deactivated volume group" "${EXTENSION}" "info"
-}
+}