Linux Mint offers Timeshift for undoing updates. Smaller distros also provide solutions for reverting changes, especially helpful post-major upgrades. Most Linux file systems currently lack snapshot support.
ZFS, Btrfs, and bcachefs support snapshots on Linux. Red Hat and SUSE prioritize legal compliance in enterprise offerings, leading to exclusion of ZFS. Red Hat is developing its GPL volume management.
Key Linux file systems like ext4, XFS, and ReiserFS don't support snapshotting. ZFS is available in various distributions but faces license issues preventing kernel integration, affecting Red Hat and SUSE offerings.
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