Implementing Power-Safe Atomic Over the Air Updates
summary
Compares common OTA architectures and argues that OSTree provides power-safe atomic updates by using a content-addressable object store that deduplicates content, builds immutable bootable trees via hard links, and stages downloads tied to a boot ID staging area so interrupted fetches are cleaned up on next boot. Describes a three‑way merge for /etc, atomic symlink swaps to activate a new deployment, automatic rollback via initramfs/watchdog, bandwidth savings from object reuse, and a working Toradex Torizon integration with pruning after sanity checks.
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