[osigurdson]

I didn’t dig into the details, but unless DwarfFS is a joke, I assume they mean the system supports create, read and delete operations.

[klyrs]

There's plenty of read-only media out there. I can see this being useful for container deployment -- you've got a database somewhere that you have read/write access to, but the deployed code doesn't need to be updated in the container. A readonly filesystem is a great way to enforce principle of least privilege.

[askvictor]

I'd guess you build a fs image from an existing filesystem, so you'd only have read operations.