Unverified50% confidenceFactExact time
Btrfs is a copy-on-write file system on Linux whose snapshot feature can record the state of a subvolume while taking up almost no additional space, and with tools such as snapper or timeshift it enables quick rollbacks.
1
Sources
50%
Confidence
Long-term
Relevance
10/23/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedLinux's fork() system call, ZFS filesystem snapshot functionality, and the MVCC mechanisms of many modern databases all rely on the copy-on-write principle.63% similarUnverifiedCopy-on-write mechanisms are widely used in file systems (such as ZFS snapshots), container images (Docker layered file systems), and cloud object storage.62% similar
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