Backup OpenWrt Systems

Backup Everything.txt

opkg update
opkg install tar
cd /
tar -cvpzf /mnt/data/rootfs.tar.gz --exclude=/mnt/data/rootfs.tar.gz --one-file-system / 
tar -cvpzf /mnt/data/overlay.tar.gz --exclude=/mnt/data/overlay.tar.gz --one-file-system /overlay-boot/ 

# if not full tar package just busybox tar
cat <<EOT >> /tmp/exclude.list
sys
tmp
overlay-boot
boot
dev
rom
var
mnt
proc
srv
lost+found
overlay
EOT
tar -cvpz -X /tmp/exclude.list -f /tmp/rootfs.tar.gz /

tar -cvpz -f /tmp/overlay.tar.gz /overlay/

Backup Lenovo EMC px4 300d.sh

cat backup.sh

#!/bin/sh

cd /
echo "Running at /"

cat <<EOT > /tmp/exclude.list
sys
tmp
overlay-boot
boot
dev
rom
var
mnt
proc
srv
lost+found
overlay
EOT

tar -cvpz -X /tmp/exclude.list -f /mnt/data/upgrade/backup/rootfs.tar.gz /

#tar -cvpzf /mnt/data/upgrade/backup/rootfs.tar.gz --exclude=/mnt/data/upgrade/backup/rootfs.tar.gz --one-file-system /

if [ -d /overlay-boot/ ]; then
  echo "Running at /overlay-boot/"
  tar -cvpzf /mnt/data/upgrade/backup/overlay.tar.gz --exclude=/mnt/data/upgrade/backup/overlay.tar.gz /overlay-boot/
  #tar -cvpzf /mnt/data/upgrade/backup/overlay.tar.gz --exclude=/mnt/data/upgrade/backup/overlay.tar.gz --one-file-system /overlay-boot/
fi

if [ -d /boot/ ]; then
  echo "Running at /boot/"
  tar -cvpzf /mnt/data/upgrade/backup/boot.tar.gz --exclude=/mnt/data/upgrade/backup/boot.tar.gz /boot/
  #tar -cvpzf /mnt/data/upgrade/backup/boot.tar.gz --exclude=/mnt/data/upgrade/backup/boot.tar.gz --one-file-system /boot/
fi

mkdir -p /tmp/extroot/
#mount -t ext4 /dev/sda1 /tmp/extroot
mount -t btrfs -o subvol=/rootfs,noatime,nodiratime,noacl,nossd UUID=68706ead-a626-4209-b3d0-1187b835f803 /tmp/extroot
mkdir -p /tmp/introot
mount --bind / /tmp/introot
tar -C /tmp/introot -cv -X /tmp/exclude.list -f - . | tar -C /tmp/extroot -xf -
umount /tmp/introot
umount /tmp/extroot


echo "Backup at: /mnt/data/upgrade/backup/"
ls /mnt/data/upgrade/backup/ -la

Copy rootfs to extroot.txt

mkdir -p /tmp/extroot/
#mount -t ext4 /dev/sda1 /tmp/extroot
mount -t btrfs -o subvol=rootfs /dev/sdb /tmp/extroot
mkdir -p /tmp/introot
mount --bind / /tmp/introot
tar -C /tmp/introot -cvf - . | tar -C /tmp/extroot -xf -
umount /tmp/introot
umount /tmp/extroot

Transfer Files to Backup Unit.txt

scp root@openwrt14:/mnt/data/openwrt14*.tar.gz /mnt/data/upgrade/backup
scp root@openwrt3:/mnt/data/openwrt3*.tar.gz /mnt/data/upgrade/backup
scp root@openwrt4:/mnt/data/openwrt4*.tar.gz /mnt/data/upgrade/backup
scp root@openwrt5:/mnt/data/openwrt5*.tar.gz /mnt/data/upgrade/backup

scp root@openwrt2:/tmp/overlay.tar.gz /mnt/data/upgrade/backup/openwrt2-overlay-21042020.tar.gz

Using rootfs.tar.gz to restore to usb extroot.txt

sudo mount -t f2fs /dev/sdh2 /mnt/usb
#sudo mount -t ext4 /dev/sdh3 /mnt/usb
sudo rm -fr /mnt/usb/*
sudo tar -xvf ~/openwrt/lede-17.01.4-ramips-mt7620-u35wf-rootfs.tar.gz -C /mnt/usb/    
sudo umount /mnt/usb