[vladvasiliu]

> Except if you keep overwriting a flash-based storage system, at some point that flash storage gets destroyed (wear level). You can absolutely achieve such by having a near full filesystem on flash. Mechanical harddrives or partitions don't suffer from this issue.

Wearing out is yet a different thing. I've had this happen on an SD card. It would refuse to write anything new, although it reported being mostly free. But the stuff that was already on it was readable.

I've had SD cards that got full. They didn't lose any data, and once I'd moved the things off them, they became usable again.

Granted, this was with a digital camera, so using fat32 at the time, so no fancy FS.