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Bug 1613950

Summary:	Tuned hangs with cpu-partitioning and offlined cpu(s) [rhel-7.4.z]
Product:	Red Hat Enterprise Linux 7	Reporter:	Jaroslav Reznik <jreznik>
Component:	tuned	Assignee:	Jaroslav Škarvada <jskarvad>
Status:	CLOSED ERRATA	QA Contact:	Tereza Cerna <tcerna>
Severity:	unspecified	Docs Contact:
Priority:	urgent
Version:	7.4	CC:	jbastian, jeder, jmario, jskarvad, mkolaja, olysonek, salmy, tcerna
Target Milestone:	rc	Keywords:	ZStream
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	tuned-2.8.0-5.el7_4.3	Doc Type:	If docs needed, set a value
Doc Text:	Previously, setting the cpu-partitioning Tuned profile caused the tuned service to become unresponsive if a CPU was set offline. With this update, the problem has been fixed, and tuned no longer hangs after selecting cpu-partitioning when a CPU is offline.	Story Points:	---
Clone Of:	1613478	Environment:
Last Closed:	2018-09-25 20:44:54 UTC	Type:	---
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:	1613478
Bug Blocks:

Description Jaroslav Reznik 2018-08-08 15:46:45 UTC

This bug has been copied from bug #1613478 and has been proposed to be backported to 7.4 z-stream (EUS).

Comment 3 Tereza Cerna 2018-09-04 13:02:40 UTC

The problem mentioned in parent bug description wasn't reproduced on RHEL-7.4. But it is possible to find this problem on this system, because using file /sys/devices/system/cpu/present instead of /sys/devices/system/cpu/online can leads to errors. 

Patch tuned-2.8.0-use-online-cpus.patch was applied in tuned-2.8.0-5.el7_4.3 (prepared package for rhel-7.4.eus in ER#35664). All regression and sanity test cases passed and worked well.

Comment 5 errata-xmlrpc 2018-09-25 20:44:54 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://access.redhat.com/errata/RHBA-2018:2774