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Operating systems · #fedora
Fedora utilizes Btrfs as the default filesystem, allowing for snapshots that facilitate system recovery after a failed package upgrade. While dnf rollback can revert package versions based on transaction history, there is ambiguity regarding the state of manual configuration files during a filesystem‑level revert. When a user reverts to a previous Btrfs snap
Atomic Fedora upgrades via rpm-ostree preserve the /var directory across deployments, but this creates uncertainty about rollback safety for stateful applications. Fedora Silverblue, Kinoite, and Fedora IoT use rpm-ostree for atomic upgrades that compose new OSTree filesystem trees without touching the running system until reboot. This design ensures interru