IBM Support

PH28419: MVFS MAY NOT LOAD ON WINDOWS HOSTS IF KEY REGISTRY VALUES CONTAIN TOO MUCH DATA

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APAR status

  • Closed as program error.

Error description

  • When the IBM ClearCase MVFS loads, it reads various system,
    registry keys, among them
    HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\LanManServe
    r\Shares" If any of the registry values in that key contain
    "unusual" amounts of data, the MVFS is unable to read the data
    and exits.
    

Local fix

  • None other than to remove/reduce the number of shares on the
    host and/or simplify the share options. This is generally not a
    good option on Windows Server hosts.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * Users of ClearCase dynamic views on Microsoft Windows        *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * The ClearCase MVFS driver could fail to initialize if the    *
    * size of certain Windows Registry fields was larger than the  *
    * buffer being used to read them.                              *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    

Problem conclusion

  • The MVFS code which reads Windows registry data at startup time
    was corrected to handle the case of large data correctly.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PH28419

  • Reported component name

    CLEARCASE WIN

  • Reported component ID

    5724G2900

  • Reported release

    901

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2020-08-12

  • Closed date

    2021-01-05

  • Last modified date

    2021-01-05

  • 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

    CLEARCASE WIN

  • Fixed component ID

    5724G2900

Applicable component levels

[{"Line of Business":{"code":"LOB36","label":"IBM Automation"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSSH27","label":"Rational ClearCase"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"901"}]

Document Information

Modified date:
06 January 2021