Hey Stefan, Stefan Bader [2016-01-13 18:06 +0100]: > Right so something (likely the umount.target) does the umount late on shutdown > after all services stopped. xen currently is not a service but sysV script.
Which is still a .service, just an autogenerated one from the SysV script. But in terms of dependencies, ordering, shutdown behaviour etc. that doesn't make much difference. > It was called but does not stop that one daemon (because the same > script is called on pkg upgrade). And because the daemon keeps the > mount busy umount -a fails. Ah, I initially thought it was deliberate that the daemon survives all the way through shutdown. So that is not the goal, but the bug? I still don't understand the problem here -- on a package upgrade the sysv script gets called with "restart", or "stop" and "start" (that depends on the dh_installinit arguments), so it should continue to run after a package/dist upgrade. OTOH, on shutdown it gets called with "stop". So is the init script broken to not actually stop the daemon on "stop"? > Right now I quickly hacked the init.d script to stop xenstored when "systemctl > is-system-running" returns anything else than running. This seems to be doing > what I need. If that is an acceptable way of doing this. I still don't understand the problem, but this really doesn't sound like a good solution :-/ You at least need to do that if the state is "degraded", and presumably have the same/a similar problem when this happens under upstart (which is a valid scenario with a trusty → xenial dist-upgrade)? Why should the init script not stop xenstored always when it's called with "stop"? Does it DTRT with "restart"? Is the problem that trusty's prerm does the wrong thing and we can't retroactively fix that? Thanks, Martin -- Martin Pitt | http://www.piware.de Ubuntu Developer (www.ubuntu.com) | Debian Developer (www.debian.org)
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