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Bug 1685285 - [RHEL 8 Beta][s390x]Network i/f naming change on IBM z Series needs to be reflected in dracut
Summary: [RHEL 8 Beta][s390x]Network i/f naming change on IBM z Series needs to be ref...
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: dracut
Version: 8.0
Hardware: s390x
OS: Linux
medium
medium
Target Milestone: rc
: 8.0
Assignee: Lukáš Nykrýn
QA Contact: Release Test Team
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2019-03-04 21:32 UTC by Stan Saner
Modified: 2022-03-13 17:02 UTC (History)
5 users (show)

Fixed In Version:
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Last Closed: 2019-07-24 20:18:12 UTC
Type: Bug
Target Upstream Version:
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Knowledge Base (Solution) 3945961 0 Install None Unable to install RHEL8-beta on IBM z Series LPAR due to network i/f naming change 2019-07-23 14:18:40 UTC

Description Stan Saner 2019-03-04 21:32:58 UTC 
Description of problem:
-----------------------
This is an off-shoot from https://bugzilla.redhat.com/show_bug.cgi?id=1680049
where installation of RHEL8-beta fails on IBM z Systems with repeated messages like 
"dracut-initqueue[950]: Warning: dracut-initqueue timeout - starting timeout scripts"

This is a consequence because of a new naming scheme for s390x network devices introduced in https://github.com/systemd/systemd/commit/0037a669ac9a2bbedccdb2f483111351e8ff4659


Please, add some code into dracut that would automatically convert the rhel7 interface names to the short variants in rhel8 on the fly.


How reproducible:
-----------------
At every installation attempt using the original network interface naming scheme, e.g. enccw0.0.a700 


Steps to Reproduce:
-------------------
1. Attempt to install RHEL8-beta on a dedicated s390x LPAR using generic.prm file like

ro ramdisk_size=40000 cio_ignore=all,!condev rd.znet=qeth,0.0.a700,0.0.a701,0.0.a702,layer2=1,portno=0 ip=<IP1>::<IP2:Mask>:zll0009:enccw0.0.a700:none rd.dasd=0.0.A904 inst.repo=nfs:nfsvers=3:<repo_server_IP>:/inst/zLinux/rhel-server-8-beta-s390x-dvd


Actual results:
---------------
The installation does not complete, fails with "dracut-initqueue[950]: Warning: dracut-initqueue timeout - starting timeout scripts"
The initial suspicion is on iSCSI as the last messages before the repeated dracut-initqueue timeouts came from iSCSI


Expected results:
-----------------
Normally completed installation
Comment 2 Dan Horák 2019-03-05 08:21:12 UTC 
see https://bugzilla.redhat.com/show_bug.cgi?id=1680049#c22 for the needed change which should probably be kept downstream only
Comment 3 Lukáš Nykrýn 2019-03-05 09:52:42 UTC 
To me, this looks like a really bad idea. I don't believe that dracut (or any other software) should ever try to fix user errors. I really don't want to add a patch that does "well this looks like a configuration from rhel7 so let's change it to the equivalent of rhel8".

In the past, we thought about building udev-builtin-net_id from rhel7 as a separate library and giving the user an option to opt-in into the old behaviour, which would partly solve this issue.
Comment 6 Kyle Walker 2019-07-24 20:18:12 UTC 
Per the reasoning in comment 3, I am closing this bug as WONTFIX. Please use the contents of the following knowledgebase article in order to correct the applicable configurations in the event that this issue is encountered.
Comment 7 Stan Saner 2019-07-25 08:18:23 UTC 
Knowledgebase Article at https://access.redhat.com/solutions/3945961
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