This project contains tools for working with Ubi block devices, for converting SPDK base image with its overlay into a new disk with its own format.

This utility reads an overlay image file and extracts metadata information, including:

• Verification of magic bytes
• Version information
• Stripe size
• Stripe header values (1 = present, 0 = not present)

First you need to install the prerequisites:

sudo apt update
sudo apt install -y make autoconf gcc clang libtool

To build, run:

make

To clean the build, run:

make clean

./migrate -base-image=<path> -overlay-image=<path> -output-image=<path> -kek-file=<path> -vhost-backend-conf-file=<path>

The metadata follows the format defined in the UBI specification:

• The first 8MB of the overlay image contains the metadata
• The metadata contains an array of stripe headers, each indicating whether a stripe is present (1) or not present (0)