Not theoretically, since it has been done. It is called LifePreserver and originated with PC-BSD years ago; thus available on FreeBSD an FreeNAS as well.
I will have a good laugh if Ubuntu is porting it over as a "headline feature".
I will have a good laugh if Ubuntu is porting it over as a "headline feature".
Certainly not everyone needs it, but I think there's a definite use case for ZFS (or btrfs, or any similar filesystem) on an ordinary desktop system, even if the user doesn't know what ZFS is.