> Using something like ZeroFS could be a nice trick for getting decent price/performance on public cloud platforms. My only concern is integrity and durability: what testing have you done to validate that it doesn't lose data even in corner-cases?

There's always going to be uncertainty with software that young, but the CI is pretty expensive and we didn't yet receive corruption-related reports. https://github.com/Barre/ZeroFS/tree/main/.github/workflows