On Mon, 16.12.13 06:55, Andrey Borzenkov (arvidj...@gmail.com) wrote: > В Sun, 15 Dec 2013 23:23:54 +0100 > Lennart Poettering <lenn...@poettering.net> пишет: > > > > > This is really not how we should do it: the admin must be capable of > > tracing and pausing the boot process, and an init system should not make > > that impossible. > > > > What happens currently when service gets SIGSTOP? Does systemd ignore > it?
We never ask for SIGSTOP notifications, and we hence don't get them at all. > Will it reflect this information in service state? No. It really doesn't care much. I am not sure reflecting this information in the service state would really be such a good idea, as the service concept mostly tries to reflect state that applies to all processes of a service, except when it comese to lifecycle decisions. Now, whether a process is stopped or not is really something that is specific to a single process, not a service, so it probably shouldn't be reflected in the entirety of the service. That said, I am not against adding something to the way we display "systemctl status" where we show explicitly for each process we list whether it is stopped or not. (maybe just by showing unicode stop sign or so next to stopped processes). But sofar nobody asked fr this... Not that we when we kill a service the hard way then we will send a SIGCONT to it, so that we can fulfill the request even if the process is currently stopped. (Because it won't react to SIGTERM as long as it is paused.) > Actually, what > state service *is* in this case (it obviously is not running but is not > failed either ...)? Well, we don't care about whether a process is stopped or not, hence from our perspective whether it is paused or not is indistuingishable, it's just a process like any other, except maybe that it might not respond anymore (which we might notice eventually if watchdog support is enabled for it...) Lennart -- Lennart Poettering, Red Hat _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
