Fixes are available
APAR status
Closed as program error.
Error description
In an IBM Rational ClearCase If an application tries to read a file for non-cached I/O after it has been used for cached I/O, a deadlock may occur while flushing the cache, that process and any other processes that access that file will hang.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: * * Users of ClearCase dynamic views on Microsoft Windows * **************************************************************** * PROBLEM DESCRIPTION: * * If an application running on Microsoft Windows tries to read * * a file in a ClearCase dynamic view using non-cached I/O, * * after it has already been in use for cached I/O, a deadlock * * may occur while flushing the cache, and that process and any * * other processes trying to access that file will hang. * **************************************************************** * RECOMMENDATION: * ****************************************************************
Problem conclusion
This problem is fixed in ClearCase 9.0.1.10 and 9.0.2.2. MVFS handling of the FILE_FLAG_NO_BUFFERING option during file open was modified to eliminate a possible deadlock.
Temporary fix
Comments
APAR Information
APAR number
PH25670
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
2020-05-21
Closed date
2020-06-29
Last modified date
2020-06-29
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
UP
R902 PSY
UP
[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSSH27","label":"Rational ClearCase"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"901","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
16 October 2021