В Mon, 3 Aug 2015 12:33:56 -0600 Chris Murphy <lists@colorremedies.com> пишет:
Actually it is exactly what CoW is. It is btrfs which is not CoW - more appropriate name is "redirect on write" or "write anywhere" (which is how oldest implementation is called).
There is no "copy" involved in btrfs write process.
COW semantically means deduplication,
"When I use a word," Humpty Dumpty said, in rather a scornful tone, "it means just what I choose it to mean—neither more nor less." Please, please - CoW snapshot means - before new data is WRITTEN, original data is COPIED somewhere else. CoW snapshots have absolutely nothing to do with deduplication and existed long before deduplication started to be used in storage world. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org