Bug#761306: Bug#771101: wheezy -> jessie dist-upgrade failure when systemd is the active PID1

[Michael Biebl]

control: reassign -1 systemd
control: forcemerge -1 761306

Am 27.11.2014 um 02:49 schrieb Michael Biebl:
> control: forcemerge -1 761306
> 
> Am 26.11.2014 um 23:06 schrieb Michael Biebl:
> 
>> I think, that's the relevant part from the journal, specifically:
>>
>>> Nov 26 19:36:57 debian systemd[1]: bind(@run/systemd/notify) failed: Address already in use
>>> Nov 26 19:36:57 debian systemd[1]: Failed to reload: Address already in use
>>
>> Running lsof /run/systemd/notify, doesn't show any process listening on
>> the socket.
>> systemd-udevd in v215 uses Type=notify and I suspect it get's stuck in
>> State activating since the sd_notify call doesn't succeed.
>>
>> I remember Sjoerd running into this issue as well, but I don't remember
>> anymore if he found the root cause and how to fix it.
> 
> I think it's the same bug as [1] and since this affects the dist-upgrade
> from wheezy, I think a RC severity is justified.
> 
> 
> [1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=761306
> 

The notification socket changed from being in the abstract namespace to
/run/systemd/notify in v209 IIRC.

I made an interesting observation: I've added an
ls -la /run/systemd/notify
and
lsof /run/systemd/notify
in systemd.postinst right before systemd is re-execd.

I would have expected, that the socket does *not* exist before systemd
is re-execd, but apparently I had a file there:

 srw-rw-rw- 1 root root 0 Oct 10 10:41 /run/systemd/notify

and no process listening on it.
(don't worry about the date, it was run in a VM with a busted clock).

*Some* process is triggering the creation of the notification socket and
it also seems to have the wrong permissions (should be srwxrwxrwx).

So I've tried and added a brute-force "rm -f /run/systemd/notify" right
before the "systemctl daemon-reexec" and the upgrade of the systemd and
udev package completed successfully.

Does anyone have an idea what's going on here and how to fix it properly?

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

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