Upgrading and maintaining AutoSD with OSTree

OSTree is a core technology that manages immutable AutoSD images using a content-addressed repository. Each unique version of an image is stored as a commit ID, similar to how Git tracks code versions. Version control enables atomic updates, ensuring that a system is either fully updated or remains on the previous version, thereby preventing partial or corrupted installations.

For environments with limited or no network access, AutoSD supports offline updates. Offline updates rely on static deltas, which are small files that contain only the changes between two specific image versions. Static deltas reduce the size of the update, which makes it possible to store deltas locally and apply them manually without an internet connection.

Important

AutoSD is the public preview of the Red Hat In-Vehicle OS product and contains all of the technology and tools necessary to run a mixed-criticality workload on that safety certified product. The documentation on this page presents the technology underlying and available in the product, but all safety requirements and documents are not covered here and are available only to Red Hat In-Vehicle OS customers. These safety documents impose some limitations and additional activities necessary for safety workloads.