IBM Support

IV65809: PROCESS READING FROM JFS2 FS WILL HANG DURING FREEZE

Subscribe to this APAR

By subscribing, you receive periodic emails alerting you to the status of the APAR, along with a link to the fix after it becomes available. You can track this item individually or track all items by product.

Notify me when this APAR changes.

Notify me when an APAR for this component changes.

 

APAR status

  • Closed as program error.

Error description

  • Unable to read from the filesystem which is freezed by
following command:
chfs -a freeze=<timeout> /<mount point>

After issuing the above command on a filesystem,
It is suppose to be read only during this time and allow
reads. Writes will be blocked and that should be
expected behavior. Instead, during the timeout period the
filesystem will block for both reads and writes.

This problem can be seen only on AIX 7.1 TL03, AIX 6.1
TL09 and above

After fix reads should work during freeze.

Local fix

  • Move any file that needs to be accessed during freeze
outside
of the fileystem before freezing.

Problem summary

  • Unable to read from the filesystem which is frozen  by
following command:
chfs -a freeze=<timeout> /<mount point>

After issuing the above command on a filesystem,
It is suppose to be read only during this time and allow
reads. Writes will be blocked and that should be
expected behavior. Instead, during the timeout period the
filesystem will block for both reads and writes.

Problem conclusion

  • Correct locking order

Temporary fix

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IV65809
    • 

  • Reported component name
    AIX V7.1
    • 

  • Reported component ID
    5765H4000
    • 

  • Reported release
    710
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Submitted date
    2014-10-13
    • 

  • Closed date
    2014-12-05
    • 

  • Last modified date
    2014-12-05
    • 





    

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

    
IV63983
    

    • 

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

    • 



Fix information


    

  • Fixed component name
    AIX V7.1
    • 

  • Fixed component ID
    5765H4000
    • 



Applicable component levels


    

  • R710  PSY
       UP
    • 








      
              
                            

              

              [{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SSMV87","label":"AIX 6.1 Enterprise Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"710","Edition":"","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}},{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSMVAX","label":"AIX Express Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"710","Edition":"","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG11R","label":"AIX 7.1 HIPERS, APARs and Fixes"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"710","Edition":"","Line of Business":{"code":"","label":""}}]
              

                          

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            05 December 2014
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
Page Feedback