JPS57141763A - Copy controlling system for multiplex volume - Google Patents
Copy controlling system for multiplex volumeInfo
- 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
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
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)
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 |
-
1981
- 1981-02-25 JP JP56026547A patent/JPS57141763A/en active Pending
Cited By (12)
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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