Mon, 14 Mar 2022
Yesterday I discussed
Carl Witty suggested that there is a more modern solution in userspace, FUSE, and Leah Neukirchen filled in the details:
Also, Dave Vasilevsky suggested that something like this could be done with the device mapper.
I think the real takeaway from this is that I had not accepted the hard truth that all Unix is Linux now, and non-Linux Unix is dead.
Thanks everyone who sent suggestions.
[ Addendum: Leah Neukirchen informs me that FUSE also runs on FreeBSD, OpenBSD and macOS, and reminds me tht there are a great many MacOS systems. I should face the hard truth that my knowledge of Unix systems capabilities is at least fifteen yers out of date. ]