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IV30648: CLCOMD CANNOT COMMUNICATE SOMETIMES APPLIES TO AIX 7100-02

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APAR status

  • Closed as program error.

Error description

  • Sometimes, the clcomd chose the service IP address as the
IP address of the target node, even though the service IP
address is on local node. This is because the table was
built when the service IP is on the opposite node, and
when
the connection is tried, the service IP is moved to the
local node. As a result, clcomd cannot make the
connection
between the nodes, until it is being refreshed or
restarted.
For example, during a PowerHA clstop:
.
Nov 17 2011 09:58:48
/usr/es/sbin/cluster/utilities/clstop:
called with flags -N -s -gr
8 dbref2: Communication error, see logfile
cl_rsh had exit code = 255, see cspoc.log and/or
clcomd.log
for more information

Local fix

  • Refresh or restart the clcomdES by issueing
# refresh -s clcomdES
# stopsrc -s clcomdES;startsrc -s clcomdES

Problem summary

  • CLCOMD CANNOT COMMUNICATE SOMETIMES
clcomd uses service IP when it wants to connect to other node
which is AIX down. But if this service IP is moved to other
node in the cluster during RG move, then connection will be
established to that node where this service IP is available
rather than to intended one(down node, connect will fail to
this) and sends data to the wrong node and down the line,
communication fails with PIPE errors.

Problem conclusion

  • When node is AIX down, skip adding stale IP addresses into
clcomd tables for that node.

Temporary fix

  • 



Comments


    

  • 6100-06 - use AIX APAR IV40706
6100-07 - use AIX APAR IV31595
6100-08 - use AIX APAR IV30631
7100-00 - use AIX APAR IV41685
7100-01 - use AIX APAR IV15442
7100-01 - use AIX APAR IV15442
7100-02 - use AIX APAR IV30648

    



APAR Information




    

  • APAR number
    IV30648
    • 

  • Reported component name
    AIX 610 STD EDI
    • 

  • Reported component ID
    5765G6200
    • 

  • Reported release
    610
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Submitted date
    2012-10-22
    • 

  • Closed date
    2012-10-22
    • 

  • Last modified date
    2013-11-23
    • 





    

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

    
IV15442
    

    • 

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

    • 



Fix information


    

  • Fixed component name
    AIX 610 STD EDI
    • 

  • Fixed component ID
    5765G6200
    • 



Applicable component levels


    

  • R610  PSY
       UP
    • 



PTF to Fileset Mapping








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            23 November 2013
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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