JPS6476338A - Duplexed file control system - Google Patents

Duplexed file control system

Info

Publication number
JPS6476338A
JPS6476338A JP62235545A JP23554587A JPS6476338A JP S6476338 A JPS6476338 A JP S6476338A JP 62235545 A JP62235545 A JP 62235545A JP 23554587 A JP23554587 A JP 23554587A JP S6476338 A JPS6476338 A JP S6476338A
Authority
JP
Japan
Prior art keywords
data
recovery
file
read
abnormality
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62235545A
Other languages
Japanese (ja)
Inventor
Yasuyuki Higashiura
Naoyuki Nishimura
Shigeru Hashimoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP62235545A priority Critical patent/JPS6476338A/en
Publication of JPS6476338A publication Critical patent/JPS6476338A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To ensure automatic substitute processing in case one of two data read out of a duplex file has abnormality by writing the data read out of a nondefective file for recovery and then storing said data into a substitute space when the recovery is impossible. CONSTITUTION:When a read command is detected by a command analyzing part 1-1, a disk controller 1-3 reads data out of the duplexed files stored in a disk devices 2-1 and 2-2 respectively. Then the data read out earlier is sent to a read requester CPU4. Thus the read processing is ended. When the abnormality is detected out the read data, a substitute processing part 1-2 writes again the data read out of the nondefective file into the same address of a defective file for recovery. Then said data is stored in a spare substitute space if the recovery is impossible. In such a way, the abnormality if occurred in one of two duplex files can be automatically recovered.
JP62235545A 1987-09-18 1987-09-18 Duplexed file control system Pending JPS6476338A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62235545A JPS6476338A (en) 1987-09-18 1987-09-18 Duplexed file control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62235545A JPS6476338A (en) 1987-09-18 1987-09-18 Duplexed file control system

Publications (1)

Publication Number Publication Date
JPS6476338A true JPS6476338A (en) 1989-03-22

Family

ID=16987567

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62235545A Pending JPS6476338A (en) 1987-09-18 1987-09-18 Duplexed file control system

Country Status (1)

Country Link
JP (1) JPS6476338A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8560925B2 (en) 2011-04-05 2013-10-15 Denso International America, Inc. System and method for handling bad bit errors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8560925B2 (en) 2011-04-05 2013-10-15 Denso International America, Inc. System and method for handling bad bit errors

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