>>> Andrei Borzenkov <arvidj...@gmail.com> schrieb am 23.05.2019 um 12:41 in Nachricht <CAA91j0WdcF=ktwrxrqkiyissir1j16vzd0avn1ffg0veh1t...@mail.gmail.com>: > On Thu, May 23, 2019 at 11:56 AM Ulrich Windl > <ulrich.wi...@rz.uni-regensburg.de> wrote: >> >> Hi! >> >> After seeing that systemd generators are run as the very first step in >> systemd's life (deduced from the timestamps), I quit the idea of using them, >> and started to use another sort of generator: >> >> I have a generator target, that creates another target and a few service >> targets. >> The interesting point is circular dependencies for the generated units, and >> I'd like to ask if the following would work: >> >> I need to enable a generated target to get ist wants-links installed; > likewise >> the generated service units need to be enabled to get the wants link from > the >> target to the service. >> As my generator created the service units first, then the target unit which >> "Wants" the service units. >> The idea is that starting the soingle target unit will start all depending >> service units. >> >> So far that is without enabling. I wonder whether I can enable the service >> units that are "WantedBy" the target unit _before_ the target unit was > actually >> generated. > > If target unit Wants your service units, there is nothing to enable.
I want to avoid the confusing "Reason: No such file or directory". > >> If that doesn't work, I'll need a two-pass approach. >> >> For history, one of the odd things in systemd v228 is this: >> # systemctl status iotwatch.target >> ● iotwatch.target >> Loaded: not-found (Reason: No such file or directory) >> Active: inactive (dead) >> # systemctl enable iotwatch.target ### thios command must do something >> magic! > > It also implicitly does "systemctl daemon-reload". It should not > really be necessary in this case (systemd should attempt to load > missing definition) but with so old version who knows. The advantage of "enable" is that it outputs messages that show what it is doing;. > >> # systemctl status iotwatch.target >> ● iotwatch.target - iotwatch I/O performance monitor >> Loaded: loaded (/run/systemd/system/iotwatch.target; enabled; vendor >> preset: disabled) >> Active: inactive (dead) >> Docs: man:iotwatch@.service(8) >> man:iotwatch-generator(8) >> >> >> So it seems I must enable units just to be able to query whether they are >> enabled...??? >> > > systemctl is-enabled Will "is-enabled" work where "status" fails with "Reason: No such file or directory"? Regards, Ulrich _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/systemd-devel
