Bug 1233004

Summary:	apply $tuned_params to existing kernels
Product:	Red Hat Enterprise Linux 7	Reporter:	Luiz Capitulino <lcapitulino>
Component:	tuned	Assignee:	Jaroslav Škarvada <jskarvad>
Status:	CLOSED ERRATA	QA Contact:	Tereza Cerna <tcerna>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	7.2	CC:	jeder, jscotka, jskarvad, tcerna
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	tuned-2.5.1-1.el7	Doc Type:	Bug Fix
Doc Text:	Cause: Previously there was a bug in the Tuned bootloader plugin regarding initial patching of the grub.cfg. Consequence: Tuned bootloader plugin could ignore existing kernels and didn't add Tuned parameters to them. User was still able to fix it by regeneration of the grub.cfg by running "grub2-mkconfig" command. Fix: The bootloader code was fixed and the initial patching of grub.cfg was improved. Result: The initial patching of grub.cfg now works correctly and user don't need to run "grub2-mkconfig".	Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-11-19 12:21:56 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:	1240765

Description Luiz Capitulino 2015-06-18 03:12:31 UTC

Description of problem:

tuned doesn't seem to apply $tuned_params to any kernel that was installed before a tuned profile that uses the bootloader plugin is activated. This requires the system administrator to re-generate grub.cfg by hand if s/he wants $tuned_params applied to existing kernels.


Version-Release number of selected component (if applicable): tuned-2.4.1-1.20150616git446596eb.el7.noarch


How reproducible:


Steps to Reproduce:
1. Get a system or a VM with a fresh RHEL installation or an existing installation which doesn't have tuned installed
2. Install tuned
3. Activate any profile that uses kernel parameters
4. Check /boot/grub2/grub.cfg

Actual results:

A line setting $tuned_params will exist, but it won't be applied to any existing kernels.

Expected results:

Existing kernels get $tuned_params applied.

Additional info:

Comment 3 Jaroslav Škarvada 2015-06-29 12:27:14 UTC

Fixed in upstream tuned commit:
https://git.fedorahosted.org/cgit/tuned.git/commit/?id=50dab75105f396f1773893e66566c65e333f4b4c

Also fixed:
- tuned_params aren't added to rescue kernels
- spurious whitespaces aren't added to grub.cfg

Comment 6 errata-xmlrpc 2015-11-19 12:21:56 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