Bug#850074: systemd: "Freezing execution" mode breaks batch upgrades

[Michael Biebl]

Am 03.01.2017 um 21:19 schrieb Michael Biebl:
> Am 03.01.2017 um 21:05 schrieb Zack Weinberg:
>> Package: systemd
>> Version: 232-8
>> Severity: normal
>>
>> When the systemd package is upgraded, the running instance of systemd is
>> likely to go into 'freezing execution' mode, in which it is unresponsive
> 
> This means systemd has crashed for some reason. At this point it freezes
> execution and doesn't allow any further actions.
> 
>> An ideal fix would be for systemd to support seamless upgrades of itself,
>> i.e. pid 1 would re-exec itself using the new binary, without losing
>> any state. 
> 
> Well, that's actually what's already happening. In postinst we run
> systemctl daemon-reexec which will start the new binary and transfer the
> state from the old process.
> 
> For some reason systemd crashed on your system before that happened.

Or while that happened. It's a bit hard to tell, as the logs are not
complete.
If you can reproduce the issue, it would be great if you can add "set
-x" to /var/lib/dpkg/info/systemd.postinst.
This would give us a better idea at which point PID1 was crashing.


-- 
Why is it that all of the instruments seeking intelligent life in the
universe are pointed away from Earth?

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