Poettering: Revisiting how we put together Linux systems

I understand that btrfs has all the features you want to make this work efficiently but I think there will be increased uptake if people have the flexibility to run the filesystem they want and pay the increased overhead for their decision. I suppose some of those alternate filesystem choosers will complain about the overhead of their choice and claim the whole scheme is stupid, but they are probably insincere in any case.

I am also interested in how this plays out with NFS based NAS devices, it seems a lot like VDI where you have a set of very hot gold master images, mixed with something like Docker you have a whole data center humming along with a very high level of deduplication and standardization.

If this makes any sort of sense then someone will try to implement it for sure, maybe everyone will end up with btrfs in the end but the path to there might go through stages of using block level copy-on-write, and failing, before they are convinced.