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He is dismissive of file-level CoW. ZFS will also create new blocks if you cp a file, only dedup will remedy that. Also APFS only seems to do file-level CoW wit
by ysleepy 10y ago
He is dismissive of file-level CoW. ZFS will also create new blocks if you cp a file, only dedup will remedy that. Also APFS only seems to do file-level CoW with a special syscall.
- sho_hn 10y agoNote he was also not even aware of support for the same feature in btrfs until I pointed it out to him in an earlier HN discussion of his original blog post -- the version on Ars already pretends otherwise, without being marked as a fixup (though I am ready to blame this on Ars fully; his blog version includes an UPDATE tag and has better flow).