JPS59151253A - Write log recording system - Google Patents
Write log recording systemInfo
- Publication number
- JPS59151253A JPS59151253A JP58025720A JP2572083A JPS59151253A JP S59151253 A JPS59151253 A JP S59151253A JP 58025720 A JP58025720 A JP 58025720A JP 2572083 A JP2572083 A JP 2572083A JP S59151253 A JPS59151253 A JP S59151253A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic disk
- write
- disk device
- memory
- 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
Links
Landscapes
- Debugging And Monitoring (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
Description
【発明の詳細な説明】
（Ａ）発明の技術分野
本発明は、磁気ディスク記憶装置（こおいてファイル管
理のためｆこ用いる書込み履歴をΔ［ｌ）録する方式に
関する。DETAILED DESCRIPTION OF THE INVENTION (A) Technical Field of the Invention The present invention relates to a method for recording a write history Δ[l] used for file management in a magnetic disk storage device.
（Ｂ） 技術の背景
磁気ディス５り記憶装置は、記憶容量、アクセス時間・
信頼性等がすぐれ、近時、大小各種のコンピータシステ
ムの外部記憶装置として広く用いられるようｌこなった
が、磁気記憶媒体の損傷あるいは塵埃等によるイぎ軸性
の低下（こ対処するため、特に高い信頼性を心安とされ
るコンピュータシステムにおいては磁気ディスク装置を
多重構成とし同じデータを複数の磁気ディスク装置に記
憶させることがある。(B) Background of the technology Magnetic disk storage devices have various storage capacities, access times,
Due to its excellent reliability, it has recently become widely used as an external storage device for computer systems of various sizes. In computer systems where high reliability is particularly important, magnetic disk drives may be configured in a multiplex configuration, and the same data may be stored in a plurality of magnetic disk drives.
例えば上記例のようζこ蝮数の磁気ディスク装置ｌこ同
じデータ′ｆｒ：ｉｔ込む場合、複数の磁気ディスクｌ
こ対し同じデータが書込捷れているか否かを確認するた
め、あるいは、故障等ｌこよってデータ書込み中ｌこ磁
気ディスク装置が停止した場合ｌこ古畳込み寺のためｌ
こ＃後（こ書込捷れた記憶ｔｆｉ域を確りするため、一
般Ｃζテータ曹込みに関する履歴、例えは書込み日時お
よびセ クアドレス等を常に配録するようｔこしＣいる
。For example, when the same data 'fr:it' is input to ζ magnetic disk drives as in the above example, multiple magnetic disks l
In order to check whether the same data has been written incorrectly, or if the magnetic disk device stops writing data due to a failure etc.
After this, in order to secure the memory TFI area that has been written to, it is necessary to always record the history regarding the general Cζ data writing, such as the date and time of writing and the sector address.
（Ｃ） 従来技術と問題点
前記のような曹込み履歴を？録するため、従来の研気テ
ィスク記憶装置においては、磁気ディスク装置の所定ト
ラックに専用の記憶領域を設けていた。(C) Conventional technology and problems Is there a history of subtraction as described above? In order to record the data, in the conventional disk storage device, a dedicated storage area is provided in a predetermined track of the magnetic disk device.
ところが、このような磁気ディスク記憶装＃ｌこおいて
は、例えば故Ｎｌこよって磁気ディスク装置が停止した
場合、該故障の如何１こよっては前記専用の記憶領域の
曹込み情報を読取ることができないという問題があった
。However, in such a magnetic disk storage device #l, if the magnetic disk drive stops due to a failure, for example, it may not be possible to read the saving information in the dedicated storage area due to the failure. The problem was that I couldn't do it.
（至）発明の目的
本発明の目的は、故障等ｆこよって磁気ディスク装置が
停止した場合であっても、磁気ディスク装置の書込み履
歴を厘ち−こ読出すことのできる曹込み履歴記録方式を
提供することにある。(To) Object of the Invention The object of the present invention is to provide a write-in history recording method that allows the writing history of a magnetic disk device to be read out instantly even if the magnetic disk device stops due to a failure or the like. Our goal is to provide the following.
■）発明の構成
本発明ｔこなる書込み履歴記録方式は、磁気ディスク装
置と、上位制御装置と前記磁気ディスク装置との間１こ
設けられ該磁気ディスク装置を制御する磁気ディスク制
御アダプタとを備える磁気ディスク記憶装置ｌこおいて
、前記磁気ディスク制御アダプタに接続され前記磁気デ
ィスク装置のアドレスと同じアドレスｆこよってアクセ
スすることのできる書込み読出し可能なメモリを設け、
前記磁気ディスク装置の書込み履Ｒを前記メモ；月こ書
込むようにしたものである。(2) Structure of the Invention The write history recording method of the present invention includes a magnetic disk device, and a magnetic disk control adapter that is provided between a host control device and the magnetic disk device and controls the magnetic disk device. The magnetic disk storage device l is provided with a writable and readable memory that is connected to the magnetic disk control adapter and can be accessed by the same address f as the address of the magnetic disk device,
The write record R of the magnetic disk device is written in the memo.
■ 発明の実施例
塀、下、本発明の要旨を実施例１・こよって具体的Ｉこ
説明する。■ Example of the Invention Below, the gist of the present invention will be specifically explained in Example 1.
図は本発明一実施例のシステムブロック図を示し、１は
中央処理装＃（ＣＰＵ）、２は彼記磁気ティスク制御ア
ダプタの上位制御装置である磁気ディスク制御装置、３
は磁気ディスク制御装置２と後記磁気ディスク装置との
間に設けられ、データの直並列変換、誤り訂正符号の訂
正と読取り誤りの検出、およびギャップの制御などのＷ
ｊｌｌ 御をおこなう磁気ディスク制御アダプタ、４は
後記メモリのアドレス指定をおこなうアドレス回路、５
は後記メモリの書込み回路、６にを後記メモリの斬出し
回路、７は後記ｎ台の磁気ディスク装置の各々（こ対応
する記憶領域を備えアドレス回路４と書込み回路５と読
出し回路６とを介して磁気ディスク制御アダプタ３９こ
接続されｖＪ紀磁気ディスク装置のアドレスと同１〕ア
ドレスによってアクセスして書込み膀出しのできるメモ
リ、８−１・８−２・−・・・・８−ｎはｎ台の磁気デ
ィスク装置である。The figure shows a system block diagram of an embodiment of the present invention, in which 1 is a central processing unit (CPU), 2 is a magnetic disk control device which is a higher level control device of the magnetic disk control adapter, and 3 is a system block diagram of an embodiment of the present invention.
is provided between the magnetic disk control device 2 and the magnetic disk device described later, and performs functions such as data serial/parallel conversion, error correction code correction and read error detection, and gap control.
4 is an address circuit that specifies the address of the memory described later, 5 is a magnetic disk control adapter that performs jll control;
6 is a memory write circuit (described later), 7 is a memory extraction circuit (described later), and 7 is each of the n magnetic disk devices (described later) (which has a corresponding storage area and is connected to an address circuit 4, a write circuit 5, and a read circuit 6). The magnetic disk control adapter 39 is connected to memory that can be accessed and written to by the same address as the VJ era magnetic disk device, 8-1, 8-2, ---, 8-n is n. This is a magnetic disk drive.
磁気ディスク装置８−１・８−２・・・−・・８−ｎｌ
こ対するデータの書込みが行なわれる場合、中央処理装
置１が例えば磁気ディスク装［１３−１１こ対するデー
タ書込みのコマンドを送出すると、磁気ディスク制御装
置２は前記コマンドによって与えられる磁気ディスク装
置８−１の機番ｔこ対応するアドレスを算出する。Magnetic disk device 8-1, 8-2...8-nl
When data is to be written to the magnetic disk drive 8-1, for example, when the central processing unit 1 sends a command to write data to the magnetic disk drive 13-11, the magnetic disk controller 2 writes the data to the magnetic disk drive 8-1 given by the command. The address corresponding to the machine number t is calculated.
磁気ディスク制御アダプタ３は磁気ディスク装置８−１
番こ対し前記コマンドによって定められるデータの書込
みをおこない、＃書込みが終るとアドレス回路４おまひ
書込み回路５を介し前記アドレスによって定められるメ
モリ７の記憶領域に対し該書込み履歴を記録する。The magnetic disk control adapter 3 is connected to the magnetic disk device 8-1.
Data determined by the above command is written to the # address, and when the # write is completed, the write history is recorded in the storage area of the memory 7 determined by the address via the address circuit 4 and the write circuit 5.
同様に（７て、すべての磁気ティスフ装置８−１・・−
８−ｎ ｌこ対しデータの書込みがおこなわれる度にメ
モリ７の各々の対応する記憶領域ｌこ書込み履歴力＋
２ｅ録され、したがってメモ１Ｊ７ｉこけ常にすべての
磁気ディスク装置８−１・８−２・−・・・・８−３の
最新の書込み履歴が記録されている。Similarly (7, all magnetic tisf devices 8-1...-
8-n Each time data is written to the corresponding storage area of the memory 7, the write history is
Therefore, the latest write history of all the magnetic disk devices 8-1, 8-2, . . . , 8-3 is always recorded in the memo 1J7i.
中央処理装置１が所望の磁気ディスク装置の書込み履歴
を必要とするときは該磁気ディスク装置の機番を指定す
ること（こよってメモリ７をアクセスし該書込み履歴を
読出すことができる。When the central processing unit 1 needs the write history of a desired magnetic disk device, it specifies the machine number of the magnetic disk device (thereby, it can access the memory 7 and read the write history).
（Ｇ） 発明の詳細
な説明したようｌこ、本発明によれげ曹込み履歴を磁気
ディスク装置に配録せず磁気ディスク制御アダプタに接
続される別のメモ１月こ記録するので、磁気ディスク装
置をアクセスしなくても当該磁気ディスク装置の書込み
履歴全読出すことができる。(G) As mentioned in the detailed description of the invention, according to the present invention, the recording history is not recorded in the magnetic disk device, but is recorded in a separate memo connected to the magnetic disk control adapter. The entire write history of the magnetic disk device can be read without accessing the device.
−またメモリとしてＩＣメモリを用いることによって書
込み履歴の管理を高速におこなうことができる。- Also, by using an IC memory as the memory, writing history can be managed at high speed.
図は本発明一実施例のシステムブロック図を示し、２は
磁気ディスク制御装置、３は磁気ディスク制御アダプタ
、７はメモリ、８−１・８−２・・・８−ｎは磁気ディ
スク装置である。The figure shows a system block diagram of an embodiment of the present invention, in which 2 is a magnetic disk control device, 3 is a magnetic disk control adapter, 7 is a memory, and 8-1, 8-2...8-n are magnetic disk devices. be.
Claims (1)
装置との間Ｉこ設けられ該磁気ディスク装置１を制御す
る磁気ディスク制御アダプタとを備える磁気ディスク記
憶装置ｌこおいて、前記磁気ディスク制御アダプタに接
続される書込み読出し可能なメモＩＪ−ｉ設け、前記磁
気ディスク装置の書込み履＃：を前記メモリーこ記録す
ることを特徴とする書込み履歴記録方式。A magnetic disk storage device comprising a magnetic disk device and a magnetic disk control adapter installed between a host controller and the magnetic disk device to control the magnetic disk device 1, wherein the magnetic disk control adapter A write history recording method characterized in that a connected write/readable memo IJ-i is provided, and the write history #: of the magnetic disk device is recorded in the memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58025720A JPS59151253A (en) | 1983-02-18 | 1983-02-18 | Write log recording system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58025720A JPS59151253A (en) | 1983-02-18 | 1983-02-18 | Write log recording system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59151253A true JPS59151253A (en) | 1984-08-29 |
Family
ID=12173628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58025720A Pending JPS59151253A (en) | 1983-02-18 | 1983-02-18 | Write log recording system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59151253A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5148230A (en) * | 1974-10-23 | 1976-04-24 | Hitachi Ltd | Fuairu akusesusuiikirokusochi |
| JPS5432237A (en) * | 1977-08-17 | 1979-03-09 | Fujitsu Ltd | High speed processing system of hysteresis information |
-
1983
- 1983-02-18 JP JP58025720A patent/JPS59151253A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5148230A (en) * | 1974-10-23 | 1976-04-24 | Hitachi Ltd | Fuairu akusesusuiikirokusochi |
| JPS5432237A (en) * | 1977-08-17 | 1979-03-09 | Fujitsu Ltd | High speed processing system of hysteresis information |
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