Linux updates with an undo function? Some distros have that

Some Linux distributions are beginning to incorporate an "undo" function for updates, allowing users to revert to previous system states after upgrades. Notably, Linux Mint utilizes the Timeshift utility, which can create system snapshots and back up files, although it is not foolproof. While many Linux file systems, such as ext4 and XFS, do not support snapshotting, others like Btrfs, ZFS, and bcachefs do. However, the integration of these features is limited due to licensing issues and the maturity of the file systems. For example, Red Hat has excluded Btrfs from its offerings and is developing its own file system, Stratis. Btrfs is currently the most established file system supporting snapshots, which is why SUSE's Snapper tool uses it by default. Snapper allows users to roll back to a previous state if an update fails, but it has vulnerabilities, such as the risk of filling up the root partition with snapshots. Other distributions, including openSUSE, Garuda, and Spiral Linux, also offer similar rollback capabilities. Additionally, some newer systems like ChromeOS employ a dual-root-volume model to facilitate easy recovery from failed updates. Overall, while several Linux distributions are exploring ways to make updates more robust and user-friendly, challenges remain in implementing reliable snapshot and rollback functionalities across various systems.