IBM Support

PM95740: Processes accessing files in MVFS are stuck in D-state and cannot be killed

Fixes are available

Rational ClearCase Fix Pack 9 (8.0.0.9) for 8.0
Rational ClearCase Fix Pack 2 (8.0.1.2) for 8.0.1
Rational ClearCase Fix Pack 13 (7.1.2.13) for 7.1.2
Rational ClearCase Fix Pack 14 (7.1.2.14) for 7.1.2
Rational ClearCase Fix Pack 11 (8.0.0.11) for 8.0
Rational ClearCase Fix Pack 4 (8.0.1.4) for 8.0.1
Rational ClearCase Fix Pack 5 (8.0.1.5) for 8.0.1
Rational ClearCase Fix Pack 12 (8.0.0.12) for 8.0
Rational ClearCase Fix Pack 15 (7.1.2.15) for 7.1.2
Rational ClearCase Fix Pack 6 (8.0.1.6) for 8.0.1
Rational ClearCase Fix Pack 13 (8.0.0.13) for 8.0
Rational ClearCase Fix Pack 16 (7.1.2.16) for 7.1.2
Rational ClearCase Fix Pack 17 (7.1.2.17) for 7.1.2
Rational ClearCase Fix Pack 14 (8.0.0.14) for 8.0
Rational ClearCase Fix Pack 7 (8.0.1.7) for 8.0.1
Rational ClearCase Fix Pack 18 (7.1.2.18) for 7.1.2
Rational ClearCase Fix Pack 15 (8.0.0.15) for 8.0
Rational ClearCase Fix Pack 8 (8.0.1.8) for 8.0.1
Rational ClearCase Fix Pack 19 (7.1.2.19) for 7.1.2
Rational ClearCase Fix Pack 16 (8.0.0.16) for 8.0
Rational ClearCase Fix Pack 9 (8.0.1.9) for 8.0.1
Rational ClearCase Fix Pack 17 (8.0.0.17) for 8.0
Rational ClearCase Fix Pack 10 (8.0.1.10) for 8.0.1
Rational ClearCase Fix Pack 18 (8.0.0.18) for 8.0
Rational ClearCase Fix Pack 11 (8.0.1.11) for 8.0.1
Rational ClearCase Fix Pack 19 (8.0.0.19) for 8.0
Rational ClearCase Fix Pack 12 (8.0.1.12) for 8.0.1
Rational ClearCase Fix Pack 20 (8.0.0.20) for 8.0
Rational ClearCase Fix Pack 13 (8.0.1.13) for 8.0.1
Rational ClearCase Fix Pack 21 (8.0.0.21) for 8.0
Rational ClearCase Fix Pack 14 (8.0.1.14) for 8.0.1
Rational ClearCase Fix Pack 15 (8.0.1.15) for 8.0.1
Rational ClearCase Fix Pack 16 (8.0.1.16) for 8.0.1
Rational ClearCase Fix Pack 17 (8.0.1.17) for 8.0.1
Rational ClearCase Fix Pack 18 (8.0.1.18) for 8.0.1
Rational ClearCase Fix Pack 19 (8.0.1.19) for 8.0.1

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APAR status

  • Closed as program error.

Error description

  • When multiple processes are accessing the same files through IBM
    Rational ClearCase dynamic views, it is possible that one
    process stats a file that is about to be deleted while another
    process is attempting to close that file and the result is both
    processes are stuck in the D state of 'uninterruptible sleep'.
    
    Steps to reproduce: Exact conditions to reproduce are unknown.
    
    Workarounds: None known.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * Users of IBM Rational ClearCase using dynamic views on Linux *
    * systems                                                      *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * Multiple processes accessing files in an IBM Rational        *
    * ClearCase VOB might hang if one process is attempting to     *
    * access a file that is being deleted.                         *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade your system to IBM Rational ClearCase version        *
    * 8.0.0.09 or later, or version 8.0.1.02 or later.             *
    ****************************************************************
    

Problem conclusion

  • The MultiVersion File System was modified to remove the deadlock
    between a process deleting a file and one attempting to access
    it at the same time.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM95740

  • Reported component name

    CC&CC MSITE UNI

  • Reported component ID

    5724G3301

  • Reported release

    712

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-08-23

  • Closed date

    2013-12-12

  • Last modified date

    2013-12-12

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

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

Fix information

  • Fixed component name

    CC&CC MSITE UNI

  • Fixed component ID

    5724G3301

Applicable component levels

  • R712 PSN

       UP

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Document Information

Modified date:
12 December 2013