TS-7180 eMMC Backup/restore

The simplest way to backup/restore the eMMC is through u-boot. If you boot up and stop in u-boot you can run this command:

ums 0 mmc 1

This will make the board act as a USB mass storage device with direct access to the emmc disk. On a linux workstation, to backup the image:

dmesg | tail -n 30
# Look for the last /dev/sd* device connected.  This should also match the eMMC
# size of around 3.78GiB.  On my system, this is /dev/sdd.
sudo mkdir /mnt/emmc/
sudo mount /dev/mmcblk1p1 /mnt/emmc/
cd /mnt/emmc/
tar -cjf /path/to/ts7180-backup-image.tar.bz2
cd ../
umount /mnt/emmc/
sync

To write a new filesystem to the TS-7180:

dmesg | tail -n 30
# Look for the last /dev/sd* device connected.  This should also match the eMMC
# size of around 3.78GiB.  On my system, this is /dev/sdd.
sudo mkdir /mnt/emmc/
sudo mkfs.ext4 /dev/mmcblk1p1
# If the above command fails, use fdisk or gparted to repartition the emmc
# to have one large partition.
sudo mount /dev/mmcblk1p1 /mnt/emmc/
tar -xjf /path/to/ts7180-new-image.tar.bz2 -C /mnt/emmc
umount /mnt/emmc/
sync