PJ40793: CTL-I064C01 IN CPAG DUE TO PERSISTENT DASD RESET NOTIFICATION UNIT CHECKS.
Closed as program error.
See Problem Summary.
APAR NUMBER: PJ40793 PRODUCT: z/TPF FUNCTIONAL AREA: DASD SHIPPED IN PUT: 10 ABSTRACT: CTL-I064C01 in cpag.asm due to persistent DASD reset notification unit checks under VM. PACKAGE CONTENTS: Source Segments: (C) base/cp/cjix.cpy Object Only Binaries: None. Configuration Independent Binaries: None. Support Files: None. OTHER BINARIES TO BUILD: YES (C) <sys>/obj/ccsons.o (C) <sys>/load/CPS0.so COMMENTS: Customer running TPF guest under VM performed a FICON director maintenance activity that took some CHPIDs offline. This caused persistent reset notification unit checks. The recovery at CJIXCD04 in CCSONS created multiple CPAG ECBs which ran the system out of common blocks while doing FDCTC CCW translation. Reset notification recovery should be limited to fewer retries and the CXFRC to CPAG should be bypassed if the failing I/O was initiated by CPAG.
SOLUTION: Copy segment cjix.cpy of ccsons.asm has been modified to perform 16 reset notification retries rather than 255. The CXFRC to CPAG will be bypassed if reset notification is presented to a CPAG I/O request. COREQS: NO None. MIGRATION CONSIDERATIONS: NO None. BUILD COMMANDS AND INSTRUCTIONS: YES #maketpf commands for linux maketpf -f CPS0 ccsons.o maketpf CPS0 link UPDATED INFORMATION UNITS: NO None. See your IBM representative if you need additional information. DOWNLOAD INSTRUCTIONS: http://www.ibm.com/software/htp/tpf/maint/maintztpf.html APAR URL: http://www.ibm.com/software/htp/tpf/ztpfmaint/put10/PJ40793.htm
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NoSpecatt / Xsystem
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