JPS57141763A - Copy controlling system for multiplex volume - Google Patents

Copy controlling system for multiplex volume

Info

Publication number
JPS57141763A
JPS57141763A JP56026547A JP2654781A JPS57141763A JP S57141763 A JPS57141763 A JP S57141763A JP 56026547 A JP56026547 A JP 56026547A JP 2654781 A JP2654781 A JP 2654781A JP S57141763 A JPS57141763 A JP S57141763A
Authority
JP
Japan
Prior art keywords
file
data
section
address
transfer
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
JP56026547A
Other languages
Japanese (ja)
Inventor
Toshihiko Kaji
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.)
Fuji Facom Corp
Original Assignee
Fuji Facom Corp
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 Fuji Facom Corp filed Critical Fuji Facom Corp
Priority to JP56026547A priority Critical patent/JPS57141763A/en
Publication of JPS57141763A publication Critical patent/JPS57141763A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To achieve copying of a file even during a job is proceeding, by interrupting a transfer if an address to be renewed is a transferred area of a file and executing the transfer processing as to the data of this address.
CONSTITUTION: When a processing renewing a file 11 of a file device 10 is produced, data are stored in a data section D of a buffer memory 1 and a write address a1 is set to an address section A. A processing section 5 transmits a control signal H and reads out the data in the file 11 and transfers the data to a file 13 to set a readout address a2 to a pointer B of a signal set section 4. A discriminating section 3 compares and discriminates the addresses a1 and a2. If the data in the address a1 is already transferred, the section 3 generates a control signal C and sets a flag in a flag set section F. When a control section 6 detects this flag set, after the transfer processing is interrupted, the data in the file 11 is renewed by a control signal E. This renewal data is read out from the file 11 and transfers it to the file 13 and restarts the transfer from the file 11.
COPYRIGHT: (C)1982,JPO&Japio
JP56026547A 1981-02-25 1981-02-25 Copy controlling system for multiplex volume Pending JPS57141763A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56026547A JPS57141763A (en) 1981-02-25 1981-02-25 Copy controlling system for multiplex volume

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56026547A JPS57141763A (en) 1981-02-25 1981-02-25 Copy controlling system for multiplex volume

Publications (1)

Publication Number Publication Date
JPS57141763A true JPS57141763A (en) 1982-09-02

Family

ID=12196528

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56026547A Pending JPS57141763A (en) 1981-02-25 1981-02-25 Copy controlling system for multiplex volume

Country Status (1)

Country Link
JP (1) JPS57141763A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5941070A (en) * 1982-09-01 1984-03-07 Hitachi Ltd Method for switching filing device
JPS5975349A (en) * 1982-10-25 1984-04-28 Hitachi Ltd File recovering system in double write storing system
JPS59220854A (en) * 1983-05-30 1984-12-12 Hitachi Ltd On-line file copying method
JPS6217829A (en) * 1985-07-17 1987-01-26 Nec Corp Magnetic disk control system
JPS6370974A (en) * 1986-09-12 1988-03-31 Fujitsu Ltd Recovery processing system for duplex volume
JPS63155468A (en) * 1986-12-18 1988-06-28 Fujitsu Ltd Recovery processing system for duplex volume
JPH01128122A (en) * 1987-11-13 1989-05-19 Nec Corp Control system for volume dynamic copying
JPH02130650A (en) * 1988-11-11 1990-05-18 Hitachi Ltd Method and system for managing file, duplicated file preparing method and file journal operating method
JPH0330033A (en) * 1989-06-27 1991-02-08 Nec Corp File copying processor
JPH06175791A (en) * 1992-12-07 1994-06-24 Nec Corp Maintenance and diagnosis system for magnetic disk device
JPH06208437A (en) * 1993-09-01 1994-07-26 Toshiba Corp Storage control device

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5941070A (en) * 1982-09-01 1984-03-07 Hitachi Ltd Method for switching filing device
JPS5975349A (en) * 1982-10-25 1984-04-28 Hitachi Ltd File recovering system in double write storing system
JPS59220854A (en) * 1983-05-30 1984-12-12 Hitachi Ltd On-line file copying method
JPH0217816B2 (en) * 1983-05-30 1990-04-23 Hitachi Seisakusho Kk
JPS6217829A (en) * 1985-07-17 1987-01-26 Nec Corp Magnetic disk control system
JPS6370974A (en) * 1986-09-12 1988-03-31 Fujitsu Ltd Recovery processing system for duplex volume
JPS63155468A (en) * 1986-12-18 1988-06-28 Fujitsu Ltd Recovery processing system for duplex volume
JPH01128122A (en) * 1987-11-13 1989-05-19 Nec Corp Control system for volume dynamic copying
JPH02130650A (en) * 1988-11-11 1990-05-18 Hitachi Ltd Method and system for managing file, duplicated file preparing method and file journal operating method
JPH0330033A (en) * 1989-06-27 1991-02-08 Nec Corp File copying processor
JPH06175791A (en) * 1992-12-07 1994-06-24 Nec Corp Maintenance and diagnosis system for magnetic disk device
JPH06208437A (en) * 1993-09-01 1994-07-26 Toshiba Corp Storage control device

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