Originally posted by arokh
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And a full CoW filesystem with integrated checksumming AND raid is much different from a metadata-only CoW/checksumming without raid, as the former is far more complex.
It's one of the reasons btrfs isn't yet ready while APFS is.
Just because you don't see the point doesn't mean there isn't one. The keyword here is speed. Journaling has overhead.
You can add as many features as you like to NTFS it's still NTFS and it's still 24 years old. Same goes for EXT4, it's still basically EXT2 with a journal.
For example EXT2 came out in 93 and after adding stuff it became EXT3 and then EXT4. It's still rocking in benchmarks.
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