JP4506594B2 - 冗長パス制御方法 - Google Patents
冗長パス制御方法 Download PDFInfo
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- JP4506594B2 JP4506594B2 JP2005213468A JP2005213468A JP4506594B2 JP 4506594 B2 JP4506594 B2 JP 4506594B2 JP 2005213468 A JP2005213468 A JP 2005213468A JP 2005213468 A JP2005213468 A JP 2005213468A JP 4506594 B2 JP4506594 B2 JP 4506594B2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
- G06F11/2053—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant
- G06F11/2089—Redundant storage control functionality
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
- G06F11/2002—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where interconnections or communication control functionality are redundant
- G06F11/2007—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where interconnections or communication control functionality are redundant using redundant communication media
- G06F11/201—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where interconnections or communication control functionality are redundant using redundant communication media between storage system components
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Description
http://www.t10.org/
http://www.t10.org/ftp/t10/drafts/spc2/spc2r20.pdf
http://www.t10.org/ftp/t10/drafts/spc3/spc3r23.pdf
(2)任意の1ノードのみOSを起動(電源オン)する。
(3)クラスタソフトのサービスプログラム及びドライバ類をOS起動時に自動で開始されないようにパラメータの設定を変更する。
(4)OSを再起動(電源オフ→電源オン)する。
(5)パス冗長化ドライバを操作するユーザインタフェース上からパーシステント リザーブ強制解除コマンドを実行する。
(6)前記(3)で変更したクラスタソフトのサービスプログラム及びドライバ類のパラメータを元に戻す。
(7)OSをシャットダウンする。
(8)全てのノードにてOSを起動し、クラスタシステムを再開する。
1 ホストコンピュータ
2 ファイルシステム
3 上位ドライバ
4 パス冗長化ドライバ(冗長パス制御装置)
41 命令捕捉手段
42 命令置換手段
43 命令発行手段
5 下位ドライバ
6,7 HBA
8 アプリケーション
10 ディスクアレイサブシステム
11,12 コントローラ
13,14,15 論理ディスク
16,17 ホスト接続ポート
18,19 内部バス
20,21 ホストインタフェースケーブル
Claims (3)
- 論理ディスクを有するディスクアレイサブシステムに接続されたコンピュータ内で、複数のイニシエータによる前記論理ディスクへのアクセスを制御する冗長パス制御方法において、
前記コンピュータが備える命令捕捉手段が、前記コンピュータ内のミドルウェア又はソフトウェアが前記論理ディスクをリザーブするためのリザーブ命令を発行したとき、このリザーブ命令を捕捉し、
前記コンピュータが備える命令置換手段が、前記命令捕捉手段が捕捉した前記リザーブ命令を、前記複数のイニシエータのうちの一のイニシエータが前記論理ディスクにアクセスすることを前記ディスクアレイサブシステムが許可するだけでなく前記複数のイニシエータのうちの他のイニシエータが前記論理ディスクにアクセスすることも前記ディスクアレイサブシステムが許可する命令に置換し、
前記コンピュータが備える命令発行手段が、前記命令置換手段が置換した前記命令を前記ディスクアレイサブシステムへ発行し、
前記ディスクアレイサブシステムへ発行する命令には、前記論理ディスクにアクセスすることを許可された前記イニシエータを示す情報が含まれ、
前記ディスクアレイサブシステムは、前記発行された命令を受けて、前記論理ディスクにアクセスすることを許可された前記イニシエータを示す情報をレジスタに書き込む、
ことを特徴とする冗長パス制御方法。 - 前記命令捕捉手段は更に、前記ミドルウェア又はソフトウェアが前記論理ディスクをリザーブすることをリリースするためのリリース命令、当該リザーブすることを解除するためのリセット命令及び当該リザーブすることを強制解除するための強制解除命令の少なくとも一つの命令を発行したとき、この命令を捕捉し、
前記命令置換手段は更に、前記命令捕捉手段が捕捉した命令を、前記複数のイニシエータのいずれかについて前記論理ディスクにアクセスすることを前記ディスクアレイサブシステムが拒否する命令に置換し、
前記命令発行手段は更に、前記命令置換手段が置換した命令を前記ディスクアレイサブシステムへ発行する、
請求項1記載の冗長パス制御方法。 - 前記ディスクアレイサブシステムへ発行する命令には、前記論理ディスクにアクセスすることを拒否された前記イニシエータを示す情報が含まれ、
前記ディスクアレイサブシステムは、前記発行された命令を受けて、前記論理ディスクにアクセスすることを拒否された前記イニシエータを示す情報をレジスタから消去する、
請求項2記載の冗長パス制御方法。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005213468A JP4506594B2 (ja) | 2005-07-22 | 2005-07-22 | 冗長パス制御方法 |
US11/453,797 US20070022227A1 (en) | 2005-07-22 | 2006-06-16 | Path control device, system, cluster, cluster system, method and computer readable medium embodying program |
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JP2005213468A JP4506594B2 (ja) | 2005-07-22 | 2005-07-22 | 冗長パス制御方法 |
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JP2007034438A JP2007034438A (ja) | 2007-02-08 |
JP4506594B2 true JP4506594B2 (ja) | 2010-07-21 |
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Families Citing this family (210)
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