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IV48431: VARYONVG COREDUMPS WHEN IMPORTING FLASHCOPIED ASYNC MIRRORED VG APPLIES TO AIX 6100-08

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APAR status

  • Closed as program error.

Error description

  • varyonvg can fail when varying on a VG used for async
glvm where the mirror pool that the cache LV is defined
on no longer exists on any PVs.

This would most commonly be expected if an async glvm
LV and it's cache LV were mirrored to an extra disk, and
that disk was then used to force a recreatevg from just
the one disk for backup purposes.  In this case, when
recreatevg runs import/varyonvg, that would fail like:
# recreatevg -y glvg1_c1 -f hdisk3
The assert subroutine failed: mp->mp_id == mp_id, file
asyncmp.c, line 852
/usr/sbin/importvg[596]: 7143532 IOT/Abort trap(coredump)
0516-780 importvg: Unable to import volume group from
hdisk3.
0516-1320 recreatevg: Unable to recreate volume group.

Local fix

  • 



Problem summary


    

  • varyonvg can fail when varying on a VG used for async glvm
where the mirror pool that the cache LV is defined on no longer
exists on any PVs.

This would most commonly be expected if an async glvm LV and
it's cache LV were mirrored to an extra disk, and that disk was
then used to force a recreatevg from just the one disk for
backup purposes.  In this case, when recreatevg runs
import/varyonvg, that would fail like:  # recreatevg -y
glvg1_c1 -f hdisk3 The assert subroutine failed: mp->mp_id ==
mp_id, file asyncmp.c, line 852 /usr/sbin/importvg 596 :
7143532 IOT/Abort trap(coredump) 0516-780 importvg: Unable to
import volume group from hdisk3.  0516-1320 recreatevg: Unable
to recreate volume group.

    



Problem conclusion


    

  • Correct checks of mirror pools for async glvm cache lv in the
varyonvg code to allow for this possibility of recreating or
varying on a vg when not all of the mirror pools that the
cachelv has assigned exist in the VG at this time.

    



Temporary fix


    

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IV48431
    • 

  • Reported component name
    AIX 610 STD EDI
    • 

  • Reported component ID
    5765G6200
    • 

  • Reported release
    610
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Submitted date
    2013-09-12
    • 

  • Closed date
    2013-09-12
    • 

  • Last modified date
    2014-02-17
    • 





    

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

    
IV44516
    

    • 

  • 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  U859957
       UP14/02/17  I  1000
    • 



PTF to Fileset Mapping








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            17 February 2014
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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