Am 10.11.2014 um 04:02 schrieb Christoph Anton Mitterer: > Hey Michael... > > On Mon, 2014-11-10 at 03:40 +0100, Michael Biebl wrote: >> allow-hotplug interfaces are configured when the actual hardware is >> available. > But you have seen what I've wrote previously,.. that I *do* in fact also > have issues with allow-hotplug... so there most likely is something > fishy there (or in unit files of services) as well.. > So is this something that I should deal with in another bug?
You are conflating two issues. Bringing an interface up with ifup@.service is not racy, since it runs when the hardware is actually added. *BUT* you lose the synchronisation point that is /etc/init.d/networking, since ifup@.service can be triggered at any time and doesn't delay boot. SysV init script (or other services which depend on $network or network.target) therefor have a problem with allow-hotplug. >> For auto interfaces, ifupdown runs the /etc/init.d/networking init >> script and assumes that at the time the script runs during boot, those >> interfaces exist. > Uhm... I though systemd would at a certain point run networking.service > via LSB compatibility (i.e. /etc/init.d/networking), and that in turn > runs ifup? Sure, that's what I said. What's your point? >> My suggestion would be, to make "ifup -a" wait for all auto interfaces >> to become available with a configurable timeout (60 seconds seems like a >> good compromise) after which it gives up waiting for the devices, prints >> a warning and proceeds. > > From the systemd side: > What the long term goals in the sense of: > If a service needs networking, but networking didn't start, the service > isn't even tried to be started? > Or even more detailed: If service postfix, needs eth3, but that didn's > show up, and wasn't configured,.. postfix won't start either. > > Cause if things are ever to be going in such direction, than exiting > ifup (and ultimately networking) with a timeout, would of course somehow > need to communicate something like "hey systemd, eth0 and eth3 failed to > come up, but wlan0 just went up fine". Not sure what you're saying. -- Why is it that all of the instruments seeking intelligent life in the universe are pointed away from Earth?
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