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Bug 2217015 - TuneD should not report ERRORs when cpu topology directory is not present for offline CPUs
Summary: TuneD should not report ERRORs when cpu topology directory is not present for...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 9
Classification: Red Hat
Component: tuned
Version: 9.2
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: Jaroslav Škarvada
QA Contact: Robin Hack
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2023-06-23 14:42 UTC by Jiří Mencák
Modified: 2023-11-07 11:40 UTC (History)
3 users (show)

Fixed In Version: tuned-2.21.0-0.1.rc1.el9
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2023-11-07 08:56:19 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Issue Tracker RHELPLAN-160615 0 None None None 2023-06-23 14:43:31 UTC
Red Hat Product Errata RHBA-2023:6703 0 None None None 2023-11-07 08:56:30 UTC

Description Jiří Mencák 2023-06-23 14:42:50 UTC 
Description of problem:
TuneD reports ERRORs when /sys/devices/system/cpu/cpuN/topology/physical_package_id file is not present.due to CPUs being offline.

Version-Release number of selected component (if applicable):
tuned-2.20.0-1.el9.noarch

How reproducible:
Always

Steps to Reproduce:
1. Create TuneD profile:
[main]
summary=PoC
include=cpu-partitioning

[variables]
isolated_cores=${f:calc_isolated_cores:1}

2. Make a CPU > 0 offline.
echo 0 > /sys/devices/system/cpu/cpu2/online 

3. Make TuneD use the profile above and restart TuneD.

Actual results:

[root@b9 bz]# tuned
2023-06-23 10:39:58,250 INFO     tuned.daemon.application: TuneD: 2.20.0, kernel: 5.14.0-295.el9.x86_64+rt
2023-06-23 10:39:58,254 INFO     tuned.daemon.application: dynamic tuning is globally disabled
2023-06-23 10:39:58,261 INFO     tuned.daemon.daemon: using sleep interval of 1 second(s)
2023-06-23 10:39:58,263 INFO     tuned.profiles.loader: loading profile: bz
2023-06-23 10:39:58,271 ERROR    tuned.utils.commands: Error when reading file '/sys/devices/system/cpu/cpu2/topology/physical_package_id': '[Errno 2] No such file or directory: '/sys/devices/system/cpu/cpu2/topology/physical_package_id''

Expected results:
No ERRORs reported in this case.

Additional info:
ERRORs from TuneD cause confusion for customers when Profiles go degraded on the OCP platform:
See: https://issues.redhat.com/browse/OCPBUGS-15319
Comment 1 Jiří Mencák 2023-06-28 08:16:11 UTC 
Upstream fix: https://github.com/redhat-performance/tuned/pull/542
Comment 11 errata-xmlrpc 2023-11-07 08:56:19 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 (tuned bug fix and enhancement update), 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-2023:6703
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