copy-on-abundant-write · research

Copy-on-abundant-write

Copy-on-abundant-write is a research cloning policy that buffers changes to postpone unsharing until enough work accumulates to justify copying.

Related Observatory article: Copy-on-abundant-write on hesela.com

BetrFS 0.5 implements this policy; structural maintenance can also require unsharing. It is not a generic Linux reflink option. [1]

Relations

related

copy-on-write, reflink

Citations

1. Zhan et al., How to Copy Files, FAST 2020, sections 1-4 (accessed 2026-10-15)
2. Hesela: Fast file clones and deferred copying costs (accessed 2026-10-15)

JSON: /data/terms/copy-on-abundant-write.json