JPH0276048A - Disk cache control system - Google Patents

Disk cache control system

Info

Publication number
JPH0276048A
JPH0276048A JP63227558A JP22755888A JPH0276048A JP H0276048 A JPH0276048 A JP H0276048A JP 63227558 A JP63227558 A JP 63227558A JP 22755888 A JP22755888 A JP 22755888A JP H0276048 A JPH0276048 A JP H0276048A
Authority
JP
Japan
Prior art keywords
reading
error
data part
address space
data
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
JP63227558A
Other languages
Japanese (ja)
Inventor
Tadahide Komatsu
Yoshiro Hirai
Ichiro Nakano
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 JP63227558A priority Critical patent/JPH0276048A/en
Publication of JPH0276048A publication Critical patent/JPH0276048A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent a reading data part from being unreadable even when an error is generated in a preceding reading data part by reading only the instructed reading data without executing preceding reading when the address space of reading subject data includes a part to be coincident with an error address space up to preceding operation.
CONSTITUTION: When one part of the address space in the reading subject data is coincident with the error address space, which is detected until the preceding operation, at least, a disk cache control unit (DCCU) 14 executes the reading of only the data part, which is read and instructed by a from a software, by an external memory device 13 without executing the preceding reading. Thus, when there is no error in the data part to be instructed from the software and there is the error in the preceding reading data part, the reading concerning the reading data part not to have any error is normally executed.
COPYRIGHT: (C)1990,JPO&Japio
JP63227558A 1988-09-13 1988-09-13 Disk cache control system Pending JPH0276048A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63227558A JPH0276048A (en) 1988-09-13 1988-09-13 Disk cache control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63227558A JPH0276048A (en) 1988-09-13 1988-09-13 Disk cache control system

Publications (1)

Publication Number Publication Date
JPH0276048A true JPH0276048A (en) 1990-03-15

Family

ID=16862789

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63227558A Pending JPH0276048A (en) 1988-09-13 1988-09-13 Disk cache control system

Country Status (1)

Country Link
JP (1) JPH0276048A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000067255A1 (en) * 1999-04-30 2000-11-09 Fujitsu Limited Disk apparatus
US6341334B1 (en) 1998-03-24 2002-01-22 Mitsubishi Denki Kabushiki Kaisha Bridge method, bus bridge, and multiprocessor system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6341334B1 (en) 1998-03-24 2002-01-22 Mitsubishi Denki Kabushiki Kaisha Bridge method, bus bridge, and multiprocessor system
WO2000067255A1 (en) * 1999-04-30 2000-11-09 Fujitsu Limited Disk apparatus
US6701413B2 (en) 1999-04-30 2004-03-02 Fujitsu Limited Disk drive performing a read-ahead operation of the data from the disk

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