I mentioned it here. I think it’s a pretty decent idea, if somebody is willing to pick it up
One could modify a filesystem (or the Linux VFS itself, if it knows about what physical areas are used and vacant) to lend its free blocks as low-level opportunistic storage space for SAFE.
If we needed to reclaim some space (e.g. for a new file), the FS would just do its job, but it would also compile a list of the chunk copies that got deleted in the process, and report them to the storage manager the first opportune moment.
I understand stuff like this are of insignificant priority at this point, but it sounds kinda cool, so I thought why not throw it out there.