new kexec routine for testing added

usr/bin/archboot-update-installer.sh

@@ -65,7 +65,8 @@ if [[ "${_L_COMPLETE}" == "1" || "${_L_INSTALL_COMPLETE}" == "1" ]]; then
     # unload virtio-net to avoid none functional network device on aarch64
     grep -qw virtio_net /proc/modules && rmmod virtio_net
     echo -e "\033[1mStep 9/9:\033[0m Loading files through kexec into kernel now ..."
-    kexec -s -f /"${VMLINUZ}" --initrd="/initrd.img" --reuse-cmdline
+    echo "          This will need some time ..."
+    _kexec
 fi
 
 # Generate new images

usr/lib/archboot/update-installer.sh

@@ -141,6 +141,14 @@ _umount_w_dir() {
     fi
 }
 
+_umount_usr() {
+        echo "Unmounting /usr.zram ..." > /dev/tty7
+        # umount all possible mountpoints
+        umount "/usr"
+        /usr.zram/bin/./umount /usr.zram
+        echo 1 > /sys/block/zram1/reset
+}
+
 _clean_archboot() {
     # remove everything not necessary
     rm -rf "/usr/lib/firmware"
@@ -228,6 +236,17 @@ _create_initramfs() {
     bsdtar --null -cf - --format=newc @- | zstd --rm -T0> /initrd.img
 }
 
+_kexec () {
+    kexec -s -f /"${VMLINUZ}" --initrd="/initrd.img" --reuse-cmdline &
+    sleep 2
+    rm /{${VMLINUZ},initrd.img}
+    _umount_usr
+    while true; do
+        sleep 1
+    done
+
+}
+
 _cleanup_install() {
     rm -rf /usr/share/{man,info,doc,gtk-doc,ibus,perl5}
     rm -rf /usr/include