On Tue, Jan 25, 2022 at 01:06:42PM +0000, Gareth Evans wrote: > Just realised I gave contradicting info earlier - I said both that I upgraded > from Buster (which is literally true) and that > > "But for root on ZFS per > > https://openzfs.github.io/openzfs-docs/Getting%20Started/Debian/Debian%20Buster%20Root%20on%20ZFS.html > (adjusted for Bullseye) <<<<<< > > ..." > > which isn't, because Bullseye arrived via dist-upgrade, rather than a fresh > installation. > > My mistake may have prompted Andrei's suggestion which I then explained away > partly in relation to having upgraded - sorry.
I don't know anything about ZFS. That said, it's *conceivable* that your / ownership has been broken this entire time, and you never noticed until now. Either because you never ran "who", or because systemd in buster didn't check the parent directory ownerships, but the one in bullseye does. Food for thought. (It's not clear to me how setting up ZFS on / would involve your unprivileged username, though. Sounds more like a "boot from rescue media and do everything in a root shell" sort of job. So I'm more inclined to think the damage was done by some sort of backup/recovery gone wrong, as previously speculated.)
