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.
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.