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IV93596: DEADLOCK: 'RPC WAIT' FOR TMMSGBRTELLACQUIRE1

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APAR status

  • Closed as program error.

Error description

  • After a network issue a very long waiter is seen
reason is 'RPC wait' for tmMsgBRTellAcquire1.

Waiter such as:
waiting 351.787361072 seconds,
LockByteRangeHandlerThread: on ThCond 0x113963FD8
(0x113963FD8) (MsgRecordCondvar), reason 'RPC wait' for
tmMsgBRTellAcquire1 on node <IP>

Local fix

  • 



Problem summary


    

  • Token manager should never return E_RESTART for
ESET_STATE request as for reset requests, there
is no retry loop (see ctResetServer/crtResetServer).
In this case token domain is in recovering,
stAwaitStable return E_RESTART for a RESET_STATE
request, token was left in COPSET state
that causes subsequent token requsts to hang.

    



Problem conclusion


    

  • since a RESET_STATE request never grants a new
token, there is no need to block or fail the request
because of pending recovery (just
like CTM_A_RELEASE).

    



Temporary fix


    

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IV93596
    • 

  • Reported component name
    SPECTRUM SCALE
    • 

  • Reported component ID
    5725Q01AP
    • 

  • Reported release
    422
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2017-02-21
    • 

  • Closed date
    2017-02-21
    • 

  • Last modified date
    2017-03-21
    • 





    

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

    
IV92216
    

    • 

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

    • 



Fix information


    

  • Fixed component name
    SPECTRUM SCALE
    • 

  • Fixed component ID
    5725Q01AP
    • 



Applicable component levels


    

  • R422  PSY  U876415
       17/03/21  I  1000
    • 








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            21 March 2017
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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