Bug#781151: boot often stalls with two "A start job is running" messages: binfmt and schroot sessions

[Thibaut Paumard]

Le 25/03/2015 17:22, Michael Biebl a écrit :
> Am 25.03.2015 um 17:10 schrieb Michael Biebl:
>> Am 25.03.2015 um 16:55 schrieb Thibaut Paumard:
>>> Le 25/03/2015 14:52, Michael Biebl a écrit :
>>>
>>>>
>>>> If your system hang during boot, please switch to tty9, then save the
>>>> output of
>>>> ps aux
>>>> systemctl list-jobs
>>>> systemd-cgls
>>>
>>> Thanks Michael,
>>>
>>> the output of each command is attached in the corresponding file.
>>>
>>
>> Looks like a some kind of bug in schroot to me, which causes a dead lock.
>> I assume, if you disable the schroot.service (update-rc.d disable
>> schroot), the problem is gone?
> 
> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=677811
> looks related, although this bug is marked as fixed.
> 
> You could try disabling the /etc/schroot/setup.d/15binfmt  hook script,
> to narrow down the problem.
> 
> 

Dear Michael,

Thanks, indeed it does look like a race condition between this script
and systemd support for binfmt. I guess the schroot service should
somehow depend on binfmt support to have terminated.

It is not so easy for me to check though, because the boot process tends
to run smoothly when I reboot several times in a row. Any solution will
take several days at least to be confirmed. I rebooted several times
with no problem after disabling schroot, but then again with no problem
after re-enabling it.

Kind regards, Thibaut.


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