Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.
RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

Bug 1252160

Summary: tuned profile aborts with ERROR NameError: name 'listdir' is not defined
Product: Red Hat Enterprise Linux 7 Reporter: Jeff Nelson <jen>
Component: tunedAssignee: Jaroslav Škarvada <jskarvad>
Status: CLOSED ERRATA QA Contact: Tereza Cerna <tcerna>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 7.2CC: jeder, jen, jskarvad, tcerna
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: tuned-2.7.0-1.el7 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
: 1357617 (view as bug list) Environment:
Last Closed: 2016-11-04 07:24:14 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:
Attachments:
Description Flags
tuned logfile none

Description Jeff Nelson 2015-08-10 20:39:27 UTC 
Created attachment 1061250 [details]
tuned logfile

Description of problem:
While reporting earlier problems in tuned, noticed the following errors in the tuned logfile starting at 16:11:

2015-08-10 16:11:00,030 INFO     tuned.daemon.daemon: stopping tunning
2015-08-10 16:11:00,478 INFO     tuned.plugins.plugin_script: calling script '/usr/lib/tuned/realtime-virtual-host/script.sh' with argument 'stop'
2015-08-10 16:11:00,624 ERROR    tuned.plugins.plugin_script: script '/usr/lib/tuned/realtime-virtual-host/script.sh' error: 1, 'Traceback (most recent call last):
  File "/usr/libexec/tuned/defirqaffinity.py", line 106, in <module>
    interruptdirs = [ f for f in listdir(irqpath) if isdir(join(irqpath,f)) ]
NameError: name 'listdir' is not defined'
2015-08-10 16:11:00,656 ERROR    tuned.utils.commands: Executing taskset error: taskset: failed to set pid 459's affinity: Invalid argument
2015-08-10 16:11:00,661 ERROR    tuned.utils.commands: Executing taskset error: taskset: failed to set pid 450's affinity: Invalid argument
2015-08-10 16:11:00,665 ERROR    tuned.utils.commands: Executing taskset error: taskset: failed to set pid 452's affinity: Invalid argument

I do not know if the affinity errors are triggered by the preceding listdir error, but I am including them in this report so that they can be solved too.

Version-Release number of selected component (if applicable):
# yum list installed | egrep tuned
tuned.noarch                          2.5.1-1.el7             @beaker-Server/7.2
tuned-profiles-nfv.noarch             2.5.1-1.el7             @/tuned-profiles-nfv-2.5.1-1.el7.noarch
tuned-profiles-realtime.noarch        2.5.1-1.el7             @beaker-Server-RT 


How reproducible:
Seen only once.

Steps to Reproduce:
1. Unknown. Perhaps just:
   # tuned-adm profile realtime-virtual-host
   # tuned-adm verify
and then wait?


Actual results:
Errors as shown above.

Expected results:
No errors

Additional info:
# uname -a
Linux localhost.localdomain 3.10.0-302.rt56.174.el7.x86_64 #1 SMP PREEMPT RT Mon Aug 3 15:01:33 EDT 2015 x86_64 x86_64 x86_64 GNU/Linux
# cat /proc/cmdline 
BOOT_IMAGE=/vmlinuz-3.10.0-302.rt56.174.el7.x86_64 root=/dev/mapper/rhel_virtlab420-root ro crashkernel=auto rd.lvm.lv=rhel_virtlab420/root rd.lvm.lv=rhel_virtlab420/swap console=ttyS1,115200 default_hugepagesz=1G isolcpus=1,3,5,7,9,11,13,14,15 nohz_full=1,3,5,7,9,11,13,14,15 intel_pstate=disable nosoftlockup
# lscpu | grep NUMA
NUMA node(s):          2
NUMA node0 CPU(s):     0,2,4,6,8,10,12,14
NUMA node1 CPU(s):     1,3,5,7,9,11,13,15
Comment 2 Jaroslav Škarvada 2015-08-20 13:44:55 UTC 
Fixed by following upstream commit:
https://git.fedorahosted.org/cgit/tuned.git/commit/?id=7d1febccaa6d73fbb00bb1626c37f599e5d555ff

It's merged code and the interruptdirs have probably never been set correctly. If you think it qualifies as a blocker, feel free to propose it, otherwise I am going to postpone it to RHEL-7.3.
Comment 3 Jaroslav Škarvada 2015-08-20 13:54:33 UTC 
Regarding taskset error, I think it is not related, could you provide log from run in debug mode? The easiest way is:

# systemctl stop tuned
# tuned -DP

It should show something like:
DEBUG:... setting affinity to '%s' for PID '%s'
Comment 6 Jeff Nelson 2015-08-28 15:29:15 UTC 
An annotated log has been uploaded. Search for "%MARK%" to locate comments that describe what was done to trigger the output that follows.

It appears that the taskset error is triggered by:

* tuned-adm off
* typing ^C in the window running tuned -DP
Comment 7 Jaroslav Škarvada 2016-07-18 15:54:34 UTC 
The taskset errors are harmless, it seems the following is happening:
- the CPU is isolated
- tasks are migrated from it
- machine shutdown triggers the Tuned shutdown or Tuned profile is changed
- Tuned rollbacks its changes and it tries to migrate the tasks back to their original CPUs, but it's no longer possible, because the CPU(s) is(are) isolated

I will open new bugzilla regarding this problem.
Comment 8 Jaroslav Škarvada 2016-07-18 16:08:42 UTC 
(In reply to Jaroslav Škarvada from comment #7)
> The taskset errors are harmless, it seems the following is happening:
> - the CPU is isolated
> - tasks are migrated from it
> - machine shutdown triggers the Tuned shutdown or Tuned profile is changed
> - Tuned rollbacks its changes and it tries to migrate the tasks back to
> their original CPUs, but it's no longer possible, because the CPU(s) is(are)
> isolated
> 
> I will open new bugzilla regarding this problem.

Well, the taskset should be able to move the task to the isolated CPU. Maybe it cannot have SCHED_FIFO. I will definitely look on this later.
Comment 9 Jaroslav Škarvada 2016-07-18 16:10:24 UTC 
I opened bug 1357617 regarding this problem.
Comment 11 Tereza Cerna 2016-09-08 11:21:56 UTC 
=================================================
Verified in:
   tuned-2.7.1-2.el7.noarch
   tuned-profiles-nfv-2.7.1-2.el7.noarch
   tuned-profiles-realtime-2.7.1-2.el7.noarch
PASS
=================================================

# cat /etc/tuned/realtime-virtual-host-variables.conf
isolated_cores=1-3

# tuned-adm profile realtime-virtual-host
# tuned-adm active
Current active profile: realtime-virtual-host

# cat /var/log/tuned/tuned.log | grep ERROR
2016-09-08 07:20:56,115 ERROR    tuned.utils.polkit: error querying polkit: Unable to guess signature from an empty dict
2016-09-08 07:20:56,589 ERROR    tuned.utils.polkit: error querying polkit: Unable to guess signature from an empty dict

No mentioned error about 'affinity: Invalid argument'.

=================================================
Reproduced in:
   tuned-2.5.1-4.el7_2.3.noarch
   tuned-profiles-nfv-2.5.1-4.el7_2.3.noarch
   tuned-profiles-realtime-2.5.1-4.el7_2.3.noarch
FAIL
=================================================

# cat /etc/tuned/realtime-virtual-host-variables.conf
isolated_cores=1-3

# tuned-adm profile realtime-virtual-host
# tuned-adm active
Current active profile: realtime-virtual-host

# cat /var/log/tuned/tuned.log | grep ERROR
2016-09-08 07:13:34,881 ERROR    tuned.plugins.plugin_script: script '/usr/lib/tuned/realtime-virtual-host/script.sh' error: 1, 'Traceback (most recent call last):
2016-09-08 07:13:35,908 ERROR    tuned.utils.commands: Executing taskset error: taskset: failed to set pid 216's affinity: Invalid argument
2016-09-08 07:13:35,913 ERROR    tuned.utils.commands: Executing taskset error: taskset: failed to set pid 212's affinity: Invalid argument
2016-09-08 07:13:35,918 ERROR    tuned.utils.commands: Executing taskset error: taskset: failed to set pid 229's affinity: Invalid argument
2016-09-08 07:13:35,922 ERROR    tuned.utils.commands: Executing taskset error: taskset: failed to set pid 156's affinity: Invalid argument
2016-09-08 07:13:35,927 ERROR    tuned.utils.commands: Executing taskset error: taskset: failed to set pid 313's affinity: Invalid argument
2016-09-08 07:13:35,932 ERROR    tuned.utils.commands: Executing taskset error: taskset: failed to set pid 337's affinity: Invalid argument
2016-09-08 07:13:35,936 ERROR    tuned.utils.commands: Executing taskset error: taskset: failed to set pid 196's affinity: Invalid argument
2016-09-08 07:13:35,941 ERROR    tuned.utils.commands: Executing taskset error: taskset: failed to set pid 317's affinity: Invalid argument
2016-09-08 07:13:35,946 ERROR    tuned.utils.commands: Executing taskset error: taskset: failed to set pid 333's affinity: Invalid argument
2016-09-08 07:13:35,950 ERROR    tuned.utils.commands: Executing taskset error: taskset: failed to set pid 192's affinity: Invalid argument
2016-09-08 07:13:35,955 ERROR    tuned.utils.commands: Executing taskset error: taskset: failed to set pid 393's affinity: Invalid argument
2016-09-08 07:13:35,959 ERROR    tuned.utils.commands: Executing taskset error: taskset: failed to set pid 273's affinity: Invalid argument
...
Comment 13 errata-xmlrpc 2016-11-04 07:24:14 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-2016-2479.html