[systemd-devel] syslog makes impossible to enter emergency mode
Lennart Poettering
lennart at poettering.net
Mon Nov 25 17:27:00 PST 2013
On Tue, 26.11.13 01:00, Lennart Poettering (lennart at poettering.net) wrote:
>
> On Sun, 24.11.13 22:36, Andrey Borzenkov (arvidjaar at gmail.com) wrote:
>
> > Interesting case (https://bugzilla.novell.com/show_bug.cgi?id=852021).
> > Systemd enters emergency due to failed mount. At the same time syslog
> > socket triggers syslog.service. Due to implicit Requires on
> > basic.target which Requires sysinit.target which conflicts with
> > emergency.{service,target} syslog.service tries to start basic.target
> > (it is not there yet ...) which apparently kills emergency shell.
>
> This was probably introduced by
> 80cfe9e163b1c92f917e0a5e053b148fca790677.
>
> I figure we should find something in the middle of
> OnActivationIsolate=yes and OnActivationIsolate=no. i.e. make use of
> the "replace-irreversible" job mode which will allow the emergency jobs
> to be queued without being reversible by later requests until they are
> finished or explicitly flushed out with "systemctl cancel".
>
> I figure I'll replace OnActivationIsolate=yes by OnActivationMode= which
> takes the full range of job modes, and then turn OnActiveIsolate= into a
> hidden compat switch
Done.
Lennart
--
Lennart Poettering, Red Hat
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