Hi Michael, (see below...)
Michael Biebl <bi...@debian.org> 于2018年11月12日周一 上午7:44写道： > > > Hi > > On Mon, 12 Nov 2018 00:18:54 +0000 Boyuan Yang <by...@debian.org> wrote: > > > anacron (2.3-26) unstable; urgency=medium > > . > > * QA upload. > > * debian/60-anacron.rules: > > + Add new udev rule to trigger anacron when external power supply > > is online. (Closes: #864213). > > Please don't do that, i.e. starting potentially long running tasks from > a udev rules file. > This is explicitly documented as not supported: > https://manpages.debian.org/unstable/udev/udev.7.en.html > > ============================================================== > This can only be used for very short-running foreground tasks. Running > an event process for a long period of time may block all further events > for this or a dependent device. > Starting daemons or other long-running processes is not appropriate for > udev; the forked processes, detached or not, will be unconditionally > killed after the event handling has finished. > ============================================================== > > As we nowadays trigger cron hourly, I would guess the original issue is > no longer valid anyways, as the chance that cron is executed is now much > higher. > > Please consider dropping the udev rule again. Current implementation is to call invoke-rc.d, which is non-blocking and will return immediately. Thus I believe we should not drop it. Hourly trigger via cron is really not enough since cron job for anacron still won't run when AC power supply is not present. I will look into other suggestions later. Thanks, Boyuan Yang
