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Bug 1223864

Summary:	tuned bootloader plugin should use GRUB_CMDLINE_LINUX_DEFAULT instead of GRUB_CMDLINE_LINUX.
Product:	Red Hat Enterprise Linux 7	Reporter:	Karl Hastings <kazen>
Component:	tuned	Assignee:	Jaroslav Škarvada <jskarvad>
Status:	CLOSED ERRATA	QA Contact:	Tereza Cerna <tcerna>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	7.1	CC:	jeder, jscotka, jskarvad, tcerna
Target Milestone:	rc
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	tuned-2.5.1-3.el7	Doc Type:	Bug Fix
Doc Text:	Cause: Previously the bootloader plugin added Tuned parameters to all kernels including the rescue kernels. Consequence: This could cause problems and could make the system unbootable if user set the Tuned kernel parameters to unsafe values. Fix: The code was fixed not to add the Tuned parameters to rescue kernels. Also the grub2 template was fixed and it now uses GRUB_CMDLINE_LINUX_DEFAULT instead of GRUB_CMDLINE_LINUX for adding Tuned parameters. This ensures that the rescue kernels are not touched if the grub config is regenerated by the grub2-mkconfig command. Result: Tuned parameters are not added to rescue kernels.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-11-19 12:21:39 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1246094
Bug Blocks:

Description Karl Hastings 2015-05-21 14:52:58 UTC

Description of problem:


Version-Release number of selected component (if applicable):
tuned-2.4.1-1.el7.noarch

How reproducible:
100%

Steps to Reproduce:
1. configure a new tuned profile to have a [bootloader] section with a 'cmdline' value
2. run tuned-adm to switch to the new profile

Actual results:
$tuned_params to all boot lines including the "Rescue" profile. e.g.:

	linux16 /vmlinuz-0-rescue-ed77159c05c14651ae386d14dbf229b4 root=/dev/mapper/rhel_rhel7-root ro crashkernel=auto rd.lvm.lv=rhel_rhel7/root rd.lvm.lv=rhel_rhel7/swap rhgb quiet $tuned_params

Expected results:
$tuned_params only gets added to the normal profiles.

Additional info:
"It's about using GRUB_CMDLINE_LINUX_DEFAULT instead of GRUB_CMDLINE_LINUX."

Comment 9 errata-xmlrpc 2015-11-19 12:21:39 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-2375.html