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MA48024 - LIC-DISK-OTHER SRCB6005121 IASP VARY ON
END OF ABSTRACT

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 APAR (Authorized Program Analysis Report)

Abstract

LIC-DISK-OTHER SRCB6005121 IASP VARY ON
END OF ABSTRACT

Error Description

In R720 when tracking space in a Geographic Mirroring          
configuration is reduced, there is an internal condition that  
causes the next vary on attempt of the IASP from a different    
session/connection to result in SRCB6005121.                    
                                                               
The problem is really a combination of two events:              
First (and the root of the problem) is an issue with decreasing
the amount of geographic mirroring tracking space in R720.      
Either an explicit decrease of the amount of tracking space or  
since the tracking space is calculated as a percentage of the  
overall disk space in the IASP in R720, maybe removing a disk  
unit or something along those lines would cause the space to    
decrease. This issue with decreasing the amount of tracking    
space results in an unexpected exception during the next vary  
on which was caught and causes the vary on to fail. The second  
piece to this issue is that as part of failing the vary on, an  
internal object was destroyed and it just so happened that a    
couple of the gates in the internal object were in an          
inconsistent state at the time of the destruction and the gate  
code throws an exception due to that inconsistency, which      
caused the MSD and the system termination.                      
                                                               
After the IPL from the above events has completed, everything  
is able to be started back up and varied on with full          
functionality.                                                  

Problem Summary

Please see the ERROR DESCRIPTION section.                      

Problem Conclusion

The condition causing the unexpected exception while decreasing
the amount of tracking space will be corrected.                

Temporary Fix

Comments

B6005121                                                        

Circumvention


PTFs Available

R720 MF66745  0114

Affected Modules


         
         

Affected Publications

Summary Information

Status............................................CLOSED PER
HIPER...........................................No
Component..................................9400DG300
Failing Module..........................RCHMGR
Reported Release...................R720
Duplicate Of..............................




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Document Information

Modified date:
15 May 2020