[OpenIndiana-discuss] Boot hangs after configuring devices (last notice is of pseudo devices

[Udo Grabowski (IMK)]

On 21/03/2023 23:09, Stephan Althaus wrote:
> On 3/21/23 20:53, Richard Lowe wrote:
>> A good thing to do is to get into mdb when it's hung, and see where we
>> are with the ::stacks command.
>> https://illumos.org/books/dev/debugging.html  has other tips.
>>
>> I would add if you set the 1 bit of `moddebug` when you're in kmdb (I
>> think moddebug/W 80000001 is verbose and stop on _init, but I tend to
>> forget), we will stop whenever a module `_init` is called, which can
>> be a good trick to try to narrow down where things might have gone
>> wrong if we don't respond to any means to get into kmdb.
>>
>> More manually, an illumos version which works and one which doesn't
>> work will narrow down which illumos changes might have caused
>> problems.
>>
>> _______________________________________________
>> openindiana-discuss mailing list
>> openindiana-discuss at openindiana.org
>> https://openindiana.org/mailman/listinfo/openindiana-discuss
>
> Hello!
>
> Thanks for your input. I tried the kmdb switched on on boot,
> with ::cont i have the same situation that i can't escape the running process to
> get the ::stack
>
> Comparing the boot messages of the working BE and the not-working one, it stops
> between these two pseudo-devices:
>
> <snip>
> Mar 21 22:19:56 dell7720 pseudo: [ID 129642 kern.notice] pseudo-device: signalfd0
> *Mar 21 22:19:56 dell7720 genunix: [ID 936769 kern.notice] signalfd0 is
> /pseudo/signalfd at 0*
> Mar 21 22:19:56 dell7720 pseudo: [ID 129642 kern.notice] pseudo-device: timerfd0
> Mar 21 22:19:56 dell7720 genunix: [ID 936769 kern.notice] timerfd0 is
> /pseudo/timerfd at 0
> <snip>
>
> The line with "*signalfd0 is /pseudo/signalfd at 0*" is the last output, then
> nothing more happens.


You can pin that down to timerfd if you just mount the new BE and
move away /usr/kernel/drv/amd64/timerfd and see if it then boots.

Consult 'man timerfd' to convince yourself that that driver is
irrelevant to illumos...
-- 
Dr.Udo Grabowski   Inst.f.Meteorology & Climate Research IMK-ASF-SAT
http://www.imk-asf.kit.edu/english/sat.php
KIT - Karlsruhe Institute of Technology           http://www.kit.edu
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