Bug 2021806

Summary:	[DDF] Document whether grubby --update-kernel=ALL --args should survive kernel upgrades
Product:	Red Hat Enterprise Linux 9	Reporter:	Direct Docs Feedback <ddf-bot>
Component:	Documentation	Assignee:	Jaroslav Klech <jklech>
Documentation sub component:	DDF	QA Contact:
Status:	CLOSED CURRENTRELEASE	Docs Contact:
Severity:	unspecified
Priority:	medium	CC:	jpazdziora, rhel-docs, vpolasek
Version:	unspecified	Keywords:	Documentation
Target Milestone:	rc
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Hardware:	All
OS:	All
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Fixed In Version:		Doc Type:	If docs needed, set a value
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Last Closed:	2022-05-23 14:46:56 UTC	Type:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Description Direct Docs Feedback 2021-11-10 09:14:06 UTC

Document whether grubby --update-kernel=ALL --args should survive kernel upgrades

When testing grubby behaviour without kernelopts on RHEL 9 (see bug 2021801), I noticed that grubby --update-kernel=ALL --args is very volatile when it comes to subsequent kernel upgrades. On x86_64 it used to work on RHEL 8 but does not seem to work on RHEL 9 (bug 2021193), on s390x it only seems to work when reboot is done after grubby is run and before dnf upgrade (bug 2021207).

The expected behaviour of grubby with respect to kernel upgrades should be specifically spelled out in the product documentation, so that  we have aligned assumptions about the workflows.

Reported by: rhn-engineering-jpazdziora

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9-beta/html/managing_monitoring_and_updating_the_kernel/configuring-kernel-command-line-parameters_managing-monitoring-and-updating-the-kernel#annotations:a893c7ee-0f49-46ff-8c28-1498b186a7f3

Comment 1 Jan Pazdziora (Red Hat) 2021-11-10 09:21:18 UTC

Of course, if it gets determined that the kernel command line parameters are *not* expected to survive kernel upgrades, that is just as important to get documented as the positive case.