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  1. OpenShift Bugs
  2. OCPBUGS-44039

Errors reported by tuned when using SecureBoot

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    • Icon: Bug Bug
    • Resolution: Done-Errata
    • Icon: Undefined Undefined
    • None
    • 4.16
    • Node Tuning Operator
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      This is a clone of issue OCPBUGS-38900. The following is the description of the original issue:
      —
      Description of problem:

      

      

      When using SecureBoot tuned reports the following error as debugfs access is restricted:
      


      tuned.utils.commands: Writing to file '/sys/kernel/debug/sched/migration_cost_ns' error: '[Errno 1] Operation not permitted: '/sys/kernel/debug/sched/migration_cost_ns''
      
tuned.plugins.plugin_scheduler: Error writing value '5000000' to 'migration_cost_ns'
      


      This issue has been reported with the following tickets:
      




      As this is a confirmed limitation of the NTO due to the TuneD component, we should document this as a limitation in the OpenShift Docs:
      
https://docs.openshift.com/container-platform/4.16/nodes/nodes/nodes-node-tuning-operator.html
      


      Expected Outcome:
      

        
	
      • Document that the NTO cannot leverage some of the Tuned features when secureboot is enabled.
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    jmencak
            Jiri Mencak
            
        
    
            
              

                                              

              
    
              
        
    
              
    
              
        

            
            



    
    openshift-crt-jira-prow
            OpenShift Prow Bot
            
        
    
    
              

                                                      
              
        
              
            
        
              
        
              
            
                                                Liquan Cui
                Liquan Cui
    
                            
        
              
    
              
                                                            
              
    
              
                        
              
        
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