so, i'm using lvm on linux, and the really cool thing about lvm is that in theory, i can move a live system from one SSD to another without even logging out. i tried this two or three times before and ended up manually restoring LVM metadata each time.
anyway,
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You're reminding me of how excited I was to use f2fs on my shiny new Samsung 960 Pro 2TB NVMe SSD provided by a sponsor. I was happily benchmarking and testing my workloads on it compared to another SSD and realized it was giving me back any space after data was getting cleared.
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I'd make a build of Chromium, clear it, and f2fs wouldn't be able to reuse any of that free space. It's designed around a garbage collection system and I think something was horrifically broken with it in that kernel version. There was definitely ongoing corruption happening.
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It was quite fast and mostly working fine other than the fact that it was silently corrupting a whole bunch of data and not being able to recover free space though. I managed to use it as my root fs despite this for a few hours. It was a very surreal experience with a filesystem.