On Tue, May 03, 2022 at 10:29:49AM +0200, Lennart Poettering wrote: > As mentioned earlier, I am not convinced sysctl is the right place for > this. sysctls are understood by most people as being the place for > tweaking kernel settings. This is not a kernel setting, but a > notification concept, and the way Jason defined it there's nothing to > read nor write, which strongly suggests to move it elsewhere, but not > /proc/sys/. I think I'm coming around to this view that having a sysctl return -ENODATA is weird. It makes `sysctl -a` always complain to stderr, for example, which seems bad. > > I can see attractiveness in providing the /run/fork-id directly from the > > kernel though, to remove the dependency on systemd for poll-less > > notification of libraries. > > I agree. I'm still not convinced there's value in having a counter or a UUID, but if you had to choose, would you prefer a counter or a UUID? It sounds like the former, because you see a use for distinguishing between zero and non-zero? Or did you finally agree with me that vmgenid isn't granular enough for that? Jason
