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Description of problem:

If ksm services are not installed, cpu-partitioning will print the following errors when being activated or deactivated:

ERROR    tuned.plugins.plugin_script: script '/usr/lib/tuned/cpu-partitioning/script.sh' error output: 'Failed to execute operation: No such file or directory
Failed to get unit file state for ksm.service: No such file or directory
Failed to execute operation: No such file or directory
Failed to get unit file state for ksmtuned.service: No such file or directory'
CONSOLE  tuned.plugins.plugin_systemd: you may need to manualy run 'dracut -f' to update the systemd configuration in initrd image
ERROR    tuned.plugins.plugin_script: script '/usr/lib/tuned/cpu-partitioning/script.sh' error output: 'Failed to get unit file state for ksm.service: No such file or directory
Failed to get unit file state for ksmtuned.service: No such file or directory'


Version-Release number of selected component (if applicable): tuned-2.10.0-0.1.rc1.el7.noarch

Created attachment 1451506 [details]
functions: disable/enable_ksm(): silence no harmful errors

Red Hat Enterprise Linux version 7 entered the Maintenance Support 1 phase in August 2019. In this phase only qualified Critical and Important Security errata advisories (RHSAs) and Urgent Priority Bug Fix errata advisories (RHBAs) may be released as they become available. Other errata advisories may be delivered as appropriate.

This bug has been reviewed by Support and Engineering representative and does not meet the inclusion criteria for Maintenance Support 1 phase.

For more information about Red Hat Enterprise Linux Lifecycle, please see https://access.redhat.com/support/policy/updates/errata#Maintenance_Support_1_Phase.