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Bug 1894654 - hcn-init.service fails on unsupported hardware
Summary: hcn-init.service fails on unsupported hardware
Keywords:
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: powerpc-utils
Version: 34
Hardware: ppc64le
OS: Linux
unspecified
medium
Target Milestone: ---
Assignee: Vasant Hegde
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks: PPCTracker
TreeView+ depends on / blocked
 
Reported: 2020-11-04 17:17 UTC by Adam Williamson
Modified: 2021-06-18 07:18 UTC (History)
12 users (show)

Fixed In Version:
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Type: Bug
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Description Adam Williamson 2020-11-04 17:17:00 UTC 
hcn-init.service is installed and enabled by default on all Power installs, it seems, as part of powerpc-utils. But it doesn't actually work on all Power systems. On the openQA worker hosts and guests, it fails immediately on startup:

===

Oct 29 17:10:04 openqa-p09-worker01.iad2.fedoraproject.org systemd[1]: Starting hybrid virtual network scan and config...
Oct 29 17:10:04 openqa-p09-worker01.iad2.fedoraproject.org hcnmgr[21385]: [DEBUG]:hcnscan enter
Oct 29 17:10:04 openqa-p09-worker01.iad2.fedoraproject.org hcnmgr[21385]: =======================10-29-2020 17:10:04============================
Oct 29 17:10:04 openqa-p09-worker01.iad2.fedoraproject.org hcnmgr[21385]: [ERROR]:hcnscan:error code 1, platform is not supported
Oct 29 17:10:04 openqa-p09-worker01.iad2.fedoraproject.org systemd[1]: hcn-init.service: Main process exited, code=exited, status=1/FAILURE
Oct 29 17:10:04 openqa-p09-worker01.iad2.fedoraproject.org systemd[1]: hcn-init.service: Failed with result 'exit-code'.
Oct 29 17:10:04 openqa-p09-worker01.iad2.fedoraproject.org systemd[1]: Failed to start hybrid virtual network scan and config.

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meaning you have a failed service right out of the box, which isn't ideal. It might be good if this could be treated as a non-error case, somehow; perhaps hcnmgr could get a custom exit code for "platform is not supported" (it's not clear if 1 is used for anything else) and the systemd service could treat that as a normal exit, for instance.
Comment 1 Vasant Hegde 2020-11-06 05:02:15 UTC 
Thanks for the bug report. I have asked `hcnmgr` command developer to look into this issue. We will keep you updated.

-Vasant
Comment 2 Dan Horák 2020-11-06 10:16:13 UTC 
(In reply to Vasant Hegde from comment #1)
> Thanks for the bug report. I have asked `hcnmgr` command developer to look
> into this issue. We will keep you updated.

I believe this could be solved by using existing systemd mechanism - "conditional activation" based on detected hw
Comment 3 IBM Bug Proxy 2020-11-06 16:31:06 UTC 
------- Comment From Mingming.Cao 2020-11-06 11:28 EDT-------
(In reply to comment #4)
> (In reply to Vasant Hegde from comment #1)
> > Thanks for the bug report. I have asked `hcnmgr` command developer to look
> > into this issue. We will keep you updated.
>
> I believe this could be solved by using existing systemd mechanism -
> "conditional activation" based on detected hw

Right, looking into this path now

yes, for hcn-init service , it should just print out platform is not supported, or, even better, not scheduled to run.
Comment 4 Ben Cotton 2021-02-09 16:17:03 UTC 
This bug appears to have been reported against 'rawhide' during the Fedora 34 development cycle.
Changing version to 34.
Comment 5 Marionowers 2021-03-19 07:01:40 UTC 
It is totally new for all of you and also for me because I just don't have time to make https://budgiebasics.com/when-do-budgie-chicks-leave-the-nest/, It is really mean to always start to finding and telling us all those ways which are be important for us to start it with a totally new pattern.
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