Add inital settings migration

openwrt_additional/do_backup_rc.local

@@ -0,0 +1,10 @@
+
+echo "Backup configuration"
+mkdir -p /root/backup
+sysupgrade -k -b /root/backup/config.tar.gz
+sync
+
+echo "Shutdown system"
+halt
+
+exit 0

openwrt_additional/restore_backup_rc.local

@@ -0,0 +1,9 @@
+
+echo "Restore configuration"
+sysupgrade -r /root/backup/config.tar.gz
+sync
+
+echo "Shutdown system"
+halt
+
+exit 0

src/entry.sh

@@ -51,7 +51,7 @@ FILE=/storage/rootfs-${OPENWRT_VERSION}.img
 if [ -f "$FILE" ]; then
     info "$FILE exists. Nothing to do."
 else 
-    info "$FILE does not exist. Copying image to storage ..."
+    info "$FILE does not exist. Copying rootfs-${OPENWRT_VERSION}.img to storage ..."
     cp /var/vm/rootfs-${OPENWRT_VERSION}.img.gz /storage/rootfs-${OPENWRT_VERSION}.img.gz
     gzip -d /storage/rootfs-${OPENWRT_VERSION}.img.gz
     
@@ -61,9 +61,16 @@ else
     chmod +x /var/vm/openwrt_additional/bin/*
     cp /var/vm/openwrt_additional/bin/* /mnt/usr/bin/
     umount /mnt
+
+    if [ -f "/storage/current_version" ]; then
+      mv /storage/current_version /storage/old_version
+    fi
+
+    touch /storage/current_version
+    echo "rootfs-${OPENWRT_VERSION}.img" > /storage/current_version
 fi
 
-
+# Enable VNC
 info "Activating web VNC ..."
 [ ! -f "$INFO" ] && error "File $INFO not found?!"
 rm -f "$INFO"
@@ -71,6 +78,7 @@ rm -f "$INFO"
 rm -f "$PAGE"
 
 
+# Check KVM
 info "Checking for KVM ..."
 KVM_ERR=""
 CPU_ARGS="-cpu cortex-a53"
@@ -119,9 +127,84 @@ else
   USB_ARGS="-device usb-host,vendorid=0x$USB_VID_1,productid=0x$USB_PID_1"
 fi
 
-info "Booting image using $VERS..."
+# Migrate settings from old OpenWrt version to new one
+if [ -f /storage/old_version ]; then
+  OLD_VERSION_ROOTFS=`cat /storage/old_version`
 
+  info "Migrate settings from $OLD_VERSION_ROOTFS to rootfs-${OPENWRT_VERSION}.img. This can take some time because we need to boot openwrt multiple times."
+  
+  mount /storage/$OLD_VERSION_ROOTFS /mnt
+  mv /mnt/etc/rc.local /mnt/etc/rc.local.disabled
+  cp /var/vm/openwrt_additional/do_backup_rc.local /mnt/etc/rc.local
+  chmod +x /mnt/etc/rc.local
+  umount /mnt
+
+  qemu-system-aarch64 -M virt \
+  -m 128 \
+  -nodefaults \
+  $CPU_ARGS -smp $CPU_COUNT \
+  -bios /usr/share/qemu/edk2-aarch64-code.fd \
+  -display vnc=:0,websocket=5700 \
+  -vga none -device ramfb \
+  -kernel /var/vm/kernel.bin -append "root=fe00 console=tty0" \
+  -blockdev driver=raw,node-name=hd0,cache.direct=on,file.driver=file,file.filename=/storage/${OLD_VERSION_ROOTFS} \
+  -device virtio-blk-pci,drive=hd0 \
+  -device qemu-xhci -device usb-kbd
+
+  # Get config backup from old rootfs
+  mount /storage/$OLD_VERSION_ROOTFS /mnt
+  rm /mnt/etc/rc.local
+  mv /mnt/etc/rc.local.disabled /mnt/etc/rc.local
+  
+  if [ -f /mnt/root/backup/config.tar.gz ]; then
+    cp /mnt/root/backup/config.tar.gz /storage/config-`basename $OLD_VERSION_ROOTFS .img`.tar.gz
+  else
+    error "No config.tar.gz in $OLD_VERSION_ROOTFS found"
+  fi
+  umount /mnt
+
+  # Put config backup to new rootfs
+  mount $FILE /mnt
+  mkdir -p /mnt/root/backup
+  cp /storage/config-`basename $OLD_VERSION_ROOTFS .img`.tar.gz /mnt/root/backup/config.tar.gz
+  
+  mv /mnt/etc/rc.local /mnt/etc/rc.local.disabled
+  cp /var/vm/openwrt_additional/restore_backup_rc.local /mnt/etc/rc.local
+  chmod +x /mnt/etc/rc.local
+  umount /mnt
+
+  qemu-system-aarch64 -M virt \
+  -m 128 \
+  -nodefaults \
+  $CPU_ARGS -smp $CPU_COUNT \
+  -bios /usr/share/qemu/edk2-aarch64-code.fd \
+  -display vnc=:0,websocket=5700 \
+  -vga none -device ramfb \
+  -kernel /var/vm/kernel.bin -append "root=fe00 console=tty0" \
+  -blockdev driver=raw,node-name=hd0,cache.direct=on,file.driver=file,file.filename=${FILE}  \
+  -device virtio-blk-pci,drive=hd0 \
+  -device qemu-xhci -device usb-kbd
+
+  mount $FILE /mnt
+  rm /mnt/etc/rc.local
+  mv /mnt/etc/rc.local.disabled /mnt/etc/rc.local
+  mv /mnt/root/backup/config.tar.gz /mnt/root/backup/config-`basename $OLD_VERSION_ROOTFS .img`.tar.gz
+  umount /mnt
+
+  # Finally remove old rootfs and old files
+  rm /storage/$OLD_VERSION_ROOTFS
+  rm /storage/old_version
+  rm /storage/config-`basename $OLD_VERSION_ROOTFS .img`.tar.gz
+fi
+
+
+
+# See qemu command if debug is enabled
 [[ "$DEBUG" == [Yy1]* ]] && set -x
+
+#************************ FINAL BOOTING ************************
+
+info "Booting image using $VERS..."
 exec qemu-system-aarch64 -M virt \
 -m 128 \
 -nodefaults \
@@ -130,7 +213,7 @@ exec qemu-system-aarch64 -M virt \
 -display vnc=:0,websocket=5700 \
 -vga none -device ramfb \
 -kernel /var/vm/kernel.bin -append "root=fe00 console=tty0" \
--blockdev driver=raw,node-name=hd0,cache.direct=on,file.driver=file,file.filename=/storage/rootfs-${OPENWRT_VERSION}.img \
+-blockdev driver=raw,node-name=hd0,cache.direct=on,file.driver=file,file.filename=${FILE} \
 -device virtio-blk-pci,drive=hd0 \
 -device qemu-xhci -device usb-kbd \
  $LAN_ARGS \