Bug 1477983 - tuned configuration function script can empty /etc/sysconfig/cpuspeed file
tuned configuration function script can empty /etc/sysconfig/cpuspeed file
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: tuned (Show other bugs)
x86_64 Linux
unspecified Severity medium
: rc
: ---
Assigned To: Jaroslav Škarvada
Depends On:
  Show dependency treegraph
Reported: 2017-08-03 08:02 EDT by Paolo Di Napoli
Modified: 2017-09-06 05:49 EDT (History)
3 users (show)

See Also:
Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2017-09-06 05:49:22 EDT
Type: Bug
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)

  None (edit)
Description Paolo Di Napoli 2017-08-03 08:02:16 EDT
Description of problem:
If the file /var/run/tuned/ktune-cpuspeed.save is empty, /etc/sysconfig/cpuspeed will be made empty upon default profile change because of the code  in file /etc/tune-profiles/functions

set_cpu_governor() {

        # always patch cpuspeed configuration if exists, if it doesn't exist and is enabled,
        # explictly disable it with hint
        if [ -e $CPUSPEED_INIT ]; then
                if [ ! -e $CPUSPEED_SAVE_FILE -a -e $CPUSPEED_CFG ]; then
                        cp -p $CPUSPEED_CFG $CPUSPEED_SAVE_FILE
                        sed -e 's/^GOVERNOR=.*/GOVERNOR='$governor'/g' $CPUSPEED_SAVE_FILE > $CPUSPEED_CFG
                if [ "$CPUSPEED_USE" = "1" ]; then
                        echo >&2
                        echo "Suggestion: install 'cpuspeed' package to get best tuning results." >&2
                        echo "Falling back to sysfs control." >&2
                        echo >&2

restore_cpu_governor() {
        if [ -e $CPUSPEED_INIT ]; then
                if [ -e $CPUSPEED_SAVE_FILE ]; then
                        cp -fp $CPUSPEED_SAVE_FILE $CPUSPEED_CFG
                        rm -f $CPUSPEED_SAVE_FILE


Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. start tuned
2. switch to profile enterprise-storage: # tuned-adm profile enterprise-storage
3. make file /var/run/tuned/ktune-cpuspeed.save empty
4. switch to profile throughput-performance: # tuned-adm-profile throughput-performance
5. verify that /etc/sysconfig/cpuspeed is empty

Actual results:
/etc/sysconfig/cpuspeed is empty

Expected results:
the /etc/sysconfig/cpuspeed file should not be emptied if /var/run/tuned/ktune-cpuspeed.save is empty

Additional info:
Comment 2 Tomáš Hozza 2017-09-06 05:49:22 EDT
Red Hat Enterprise Linux 6 transitioned to the Production 3 Phase on May 10, 2017.  During the Production 3 Phase, Critical impact Security Advisories (RHSAs) and selected Urgent Priority Bug Fix Advisories (RHBAs) may be released as they become available.

The official life cycle policy can be reviewed here:

This issue does not appear to meet the inclusion criteria for the Production Phase 3 and will be marked as CLOSED/WONTFIX. If this remains a critical requirement, please contact Red Hat Customer Support to request a re-evaluation of the issue, citing a clear business justification.  Red Hat Customer Support can be contacted via the Red Hat Customer Portal at the following URL:


Note You need to log in before you can comment on or make changes to this bug.