I had a test case with ext4 where it would take 80 seconds to write out an 8MB file on a 16TB filesystem. ext4 does not handle free space fragmentation very we

I had a test case with ext4 where it would take 80 seconds to write out an 8MB file on a 16TB filesystem. ext4 does not handle free space fragmentation very well as it still relies on block group bitmaps. Oh the legacy baggage it carries...