Hi, > Is this based on some spec? Because it looks pretty odd to me. There > can be a pretty wide range of two/three/etc level cells with wildly > different ranges of durability. And there's really not a lot of slc > for generic devices these days, if any. Yes, this is based on the virtio spec https://docs.oasis-open.org/virtio/virtio/v1.2/csd01/virtio-v1.2-csd01.html section 5.2.6
