IBM Support

IJ32813: "MMCHNODE --DAEMON-INTERFACE" COMMAND ON A WINDOWS NODE CAN RESULT IN CLUSTER CONFIGURATION ISSUES.

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APAR status

  • Closed as program error.

Error description

  • Issuing a "mmchnode --daemon-interface" attempts
to change the cluster configuration
repository (CCR). When this mmchnode is issued from
a Windows node,  CCR gets
committed with invalid IPv4 information,
rendering the cluster in a non-working state.

Local fix

  • None.
A manual CCR restore (mmsdrrestore --ccr-repair)
may be necessary to restore
the cluster to a working state.

Problem summary

  • Issuing a "mmchnode --daemon-interface" attempts
to change the cluster configuration
repository (CCR). When this mmchnode is issued from
a Windows node,  CCR gets
committed with invalid IPv4 information,
rendering the cluster in a non-working state.

Problem conclusion

  • Benefits of the solution:
Prevent Cluster Configuration Repository (CCR) from
getting corrupted with invalid IPv4 addresses.

Work Around:
None.
A manual CCR restore (mmsdrrestore --ccr-repair)
may be necessary to restore
the cluster to a working state.

Problem trigger:
Issuing "mmchnode --daemon-interface"
command on a Windows node specifying
an alternate IPv4 address.

Symptom:
Error output/message:
The mmchnode command fails with
a message trail resembling:

'mmchnode: Unable to commit new changes.'
'mmchnode: [E] The command was unable to reach the
CCR service on any quorum node.  Ensure the CCR service
(mmfsd or mmsdrserv daemon) is running on all quorum
nodes and the communication port is not blocked by the
firewall.'
'mmchnode: 6027-1271 Unexpected error from function
setRunningCommand.  Return code: 149'

Platforms affected:
Windows/x86_64 only.

Functional Area affected:
CCR.

Customer Impact:
High Importance.

Temporary fix

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IJ32813
    • 

  • Reported component name
    SPEC SCALE STD
    • 

  • Reported component ID
    5737F33AP
    • 

  • Reported release
    505
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2021-05-26
    • 

  • Closed date
    2021-05-26
    • 

  • Last modified date
    2021-05-26
    • 





    

  • APAR is sysrouted FROM one or more of the following:
    

    
IJ32554
    

    • 

  • APAR is sysrouted TO one or more of the following:
    

    • 



Fix information


    

  • Fixed component name
    SPEC SCALE STD
    • 

  • Fixed component ID
    5737F33AP
    • 



Applicable component levels


    








      
              
                            

              

              [{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"STXKQY","label":"IBM Spectrum Scale"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"505","Line of Business":{"code":"LOB26","label":"Storage"}}]
              

                                                                    

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            27 May 2021
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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