PH13593: MVFS BSOD IN MVFS CACHE MANAGER WHEN CREATING AND ACCESSING LARGE NUMBERS OF VIEW PRIVATE FILES IN A DYNAMIC VIEW

Rational ClearCase Fix Pack 8 (9.0.1.8) for 9.0.1
Rational ClearCase Fix Pack 9 (9.0.1.9) for 9.0.1
Rational ClearCase Fix Pack 10 (9.0.1.10) for 9.0.1
Rational ClearCase Fix Pack 11 (9.0.1.11) for 9.0.1

APAR status

• Closed as program error.

Error description

• When running a task that creates and accesses large numbers of
  view private files in parallel in an IBM Rational ClearCase
  dynamic view, the ClearCase host may crash reporting an error in
  mvfs100x64.sys. The dump will report this as a "CACHE_MANAGER"
  dump.
  

Local fix

• Disable the MVFS cache manager by setting the following registry
  value to 0:
  HKLM\system\Currentcontrolset\services\mvfs\Parameters\UseCacheM
  anager. Then reboot the host. This should eliminate the crash,
  but may degrade MVFS performance.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Users of ClearCase on Microsoft Windows                      *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * The ClearCase client host may crash with code CACHE_MANAGER  *
  * (34), during activities which generate concurrent I/O        *
  * operations on files in ClearCase dynamic views.              *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  

Problem conclusion

• This problem is fixed in ClearCase 9.0.1.8.
  

Temporary fix

Comments

APAR Information

• 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

• R901 PSY

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