[OE-core] [PATCH] serial-getty at .service: Allow device to fast fail if it does not exist

[Jason Wessel]

On 8/28/19 5:41 PM, Richard Purdie wrote:
> On Wed, 2019-08-28 at 15:24 -0500, Jason Wessel wrote:
>> On 8/27/19 7:15 PM, richard.purdie at linuxfoundation.org wrote:
>>> On Tue, 2019-08-27 at 19:03 -0500, Jason Wessel wrote:
>>>> On 8/27/19 5:58 PM, Richard Purdie wrote:
>>>>> Hi Jason,
>>>>> Somehow this change is responsible for this build failure:
>>>>>
>>>>> https://autobuilder.yoctoproject.org/typhoon/#/builders/72/builds/976
>>>>>
>>>>> (steps 5c and 7c so failure during testimage).
>>>>>
>>>>> I have bisected it to this change, I haven't looked into why.
>>>> Thanks for tracking it down.   I am sure how to try an duplicate
>>>> this.  I clicked around to try and find out a bit about what it
>>>> is
>>>> running for these phases of the build but it is not very obvious.
>>>>
>>>> Is there a local.conf I can try along with what ever commands it
>>>> ran?
>>> The configuration its using is shown in
>>> https://autobuilder.yoctoproject.org/typhoon/#/builders/72/builds/978/steps/8/logs/stdio
>>> for each step.
>>>
>> I tried the configuration on my system but it seems to work fine, see
>> below.   Is there a way to get complete log file of the boot on the
>> broken host?  I am also curious if it fails every time or not.
>>
>> /home/pokybuild/yocto-worker/qa-
>> extras2/build/build/tmp/work/qemux86_64-poky-linux/core-image-
>> sato/1.0-r0/testimage/qemu_boot_log.20190827200002
>>
>> I am not sure it will tell us anything further or not, but it
>> certainly looks like the system didn't boot correctly in the first
>> place.
> I've rerun it as
> https://autobuilder.yoctoproject.org/typhoon/#/builders/72/builds/983
>
>

I'll take a further look at it tomorrow.   I have no idea why systemd emitted this message:

[    4.750194] systemd[1]: Unnecessary job for /dev/ttyS1 was removed.
[    4.751666] systemd[1]: Unnecessary job for /dev/ttyS0 was removed.

[  OK  ] Started Serial Getty on ttyS0.
          Stopping Serial Getty on ttyS0...

I have an image now with the problem so, I'll make a copy of it in case the problem "goes away" again.  It will be interesting to see what the deal is with this corner case.

Cheers,

Jason.