JP5059974B2 - クラスタ共有ボリューム - Google Patents
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- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
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- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
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- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
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- H04L67/01—Protocols
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- G06F11/2046—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 processing functionality is redundant where the redundant components share persistent storage
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Description
<%systemdrive>:\clusterStorage\Vol1
<%systemdrive>:\clusterStorage\Vol2
<%systemdrive>:\clusterStorage\VolN
図10は図1〜図9の例を実施することができる適切なコンピューティング及びネットワーキング環境1000の例を示している。コンピューティングシステム環境1000は適切なコンピューティング環境の一例に過ぎず、本発明の使用又は機能の範囲について何らかの限定を提示するつもりではない。例示的動作環境1000に示されたコンポーネントのいずれか1又は組み合わせに関連する従属又は要求を有するようにコンピューティング環境1000が解釈されるべきでない。
結論
Claims (13)
- サーバクラスタ環境において、複数のノードと、前記複数のノードに連結された記憶装置とを備え、
前記記憶装置は前記複数のノードのうちのいずれか1に取り付けられたボリュームを含み、前記ボリュームが取り付けられているノードは前記記憶装置の所有ノードであり、前記ボリュームが取り付けられていない他の各ノードは非所有ノードであり、各非所有ノードは当該非所有ノードから前記ボリュームへの共有アクセスを提供するリダイレクタを含み、前記リダイレクタは、第1の通信パスを介してファイルシステムメタデータ要求を前記所有ノードに送り、前記第1の通信パスに比べて高速通信パスを備える第2の通信パスを介して、前記ボリュームに少なくともいくつかのファイルシステム読み取り及び書き込みデータを送り、前記リダイレクタは、I/O要求を受け取るルートインスタンスと、I/Oデータをドライバに転送するルートインスタンスに連結された転送インスタンスとを備え、前記リダイレクタは、アプリケーションの仮想ハンドルを、前記ボリュームによって用いられる実際のファイルシステムハンドルに変換するためのハンドルテーブルを維持し、前記ボリュームが他のノードの記憶装置に移動する場合、前記仮想ハンドルを変更することなく前記実際のファイルシステムハンドルを変更し、前記所有ノードは前記記憶装置の所有権を維持するための機構を含み、前記記憶装置の所有権を維持するための前記機構は、前記記憶装置と関連付けられた登録テーブルに所有権を示すキーを書き込む永続予約機構を備え、各非所有ノードは前記登録テーブルに共有キーを書き込むことを特徴とするシステム。 - 前記所有ノードはクラスタメンバシップデータに対して共有キーを確認し、前記クラスタメンバシップデータに基づいて有効でないと思えるキーを無効にすることを特徴とする請求項1記載のシステム。
- 前記リダイレクタは、ファイルシステム読み取り及び書き込みデータを前記第1の通信パス又は前記第2の通信パスを介して送るかを、少なくとも1つの現在の状態に基づいて選択的に判別することを特徴とする請求項1記載のシステム。
- ファイルにアクセスするために用いられる、グループデータ又は特権データ、又はグループデータ及び特権データの両方に対応する情報を含むトークンを用いるセキュリティコンポーネントを更に備えることを特徴とする請求項1記載のシステム。
- 前記ボリュームは、どのノードがファイル名を提供するかと無関係である単一の名前空間に対応するファイル名を介してアクセスされることを特徴とする請求項1記載のシステム。
- コンピューティング環境において、
クラスタの所有ノードに取り付けられたボリュームに向けられたI/O要求を、前記クラスタの非所有ノードのリダイレクタがインターセプトするステップと、
前記I/O要求が前記ボリュームに対するダイレクトI/Oによって対処され得るか否かを判定することを含み、ダイレクトI/Oによって対処され得る場合、ダイレクトI/Oを介して前記I/O要求を前記ボリュームにリダイレクトし、対処されない場合、前記I/O要求を、ネットワークプロトコルを介して前記I/O要求に対処する前記所有ノードにリダイレクトすることにより、前記リダイレクタが、前記I/O要求を処理するステップであって、前記リダイレクタは、第1の通信パスを介してファイルシステムメタデータ要求を前記所有ノードに送り、前記第1の通信パスに比べて高速通信パスを備える第2の通信パスを介して、前記ボリュームに少なくともいくつかのファイルシステム読み取り及び書き込みデータを送り、前記リダイレクタは、I/O要求を受け取るルートインスタンスと、I/Oデータをドライバに転送するルートインスタンスに連結された転送インスタンスとを備える、ステップと、
前記リダイレクタが、アプリケーションの仮想ハンドルを実際のファイルハンドルに変換するためのハンドルテーブルを維持し、前記ボリュームに対応する記憶装置を所有するノード又は前記ボリュームに対応する前記記憶装置を所有するノードのホストバストアダプタの故障を検出し、前記ボリュームが他のノードの記憶装置に移動する場合、前記仮想ハンドルを変更することなく前記実際のファイルシステムハンドルを変更するステップと
を含むことを特徴とする方法。 - 永続予約機構を介して前記所有ノードで前記記憶装置の所有権を維持するステップを更に含むことを特徴とする請求項6記載の方法。
- 前記I/O要求がダイレクトI/Oによって対処され得るか否かの判定は、
前記I/O要求がメタデータ又は読み取り/書き込みデータに対応するか否かの判定、
前記I/O要求がバッファリングされているI/O又はバッファリングされていないI/Oに対応するか否かの判定、又は、
前記I/O要求がメタデータ又は読み取り/書き込みデータに対応するか否かの判定、及び前記I/O要求がバッファリングされているI/O又はバッファリングされていないI/Oに対応するか否かの判定の両方を含むことを特徴とする請求項6記載の方法。 - 前記I/O要求を処理するステップは、
ホストバスアダプタ故障を検出して、前記I/O要求がダイレクトI/Oによって対処され得るか否かを判定するステップと、
前記I/O要求を中止するステップと、代替のパスに切り替えるステップと、
前記I/O要求を再開させるステップと
を含むことを特徴とする請求項6記載の方法。 - 前記I/O要求がダイレクトI/Oによって対処され得るか否かの判定は、ダイレクトI/O通信パスの状態の判定、又は抑制状態に基づいてネットワークプロトコルを介してI/Oデータを通信するか否かの判定を含むことを特徴とする請求項6記載の方法。
- 前記要求はダイレクトI/Oによって対処され、
前記I/O要求が前記I/O要求に対応するファイルのブロック割り当てを変更することができる種類であるか否か判定するステップと、
変更できる種類である場合、前記ファイルのブロック割り当てを得るステップと
を更に含むことを特徴とする請求項6記載の方法。 - 前記I/O要求はファイルを作成又は開くために使用されるメタデータに対応し、
前記ファイルへのアクセスを許可するためにセキュリティ情報を処理するステップを更に含むことを特徴とする請求項6記載の方法。 - コンピュータ実行可能な命令を有する1以上のコンピュータ読み取り可能な記録媒体であって、コンピュータに、
クラスタの所有ノードに取り付けられたボリュームに向けられたI/O要求を、前記クラスタの非所有ノードのリダイレクタがインターセプトするステップと、
前記I/O要求が前記ボリュームに対するダイレクトI/Oによって対処され得るか否かを判定することを含み、ダイレクトI/Oによって対処され得る場合、ダイレクトI/Oを介して前記I/O要求を前記ボリュームにリダイレクトし、対処されない場合、前記I/O要求を、ネットワークプロトコルを介して前記I/O要求に対処する前記所有ノードにリダイレクトすることにより、前記リダイレクタが、前記I/O要求を処理するステップであって、前記リダイレクタは、第1の通信パスを介してファイルシステムメタデータ要求を前記所有ノードに送り、前記第1の通信パスに比べて高速通信パスを備える第2の通信パスを介して、前記ボリュームに少なくともいくつかのファイルシステム読み取り及び書き込みデータを送り、前記リダイレクタは、I/O要求を受け取るルートインスタンスと、I/Oデータをドライバに転送するルートインスタンスに連結された転送インスタンスとを備える、ステップと、
前記リダイレクタが、アプリケーションの仮想ハンドルを実際のファイルハンドルに変換するためのハンドルテーブルを維持し、前記ボリュームに対応する記憶装置を所有するノード又は前記ボリュームに対応する前記記憶装置を所有するノードのホストバストアダプタの故障を検出し、前記ボリュームが他のノードの記憶装置に移動する場合、前記仮想ハンドルを変更することなく前記実際のファイルシステムハンドルを変更するステップと
を含む、ステップを実行させる命令を格納することを特徴とするコンピュータ読み取り可能な記録媒体。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/147,956 US7840730B2 (en) | 2008-06-27 | 2008-06-27 | Cluster shared volumes |
US12/147,956 | 2008-06-27 | ||
PCT/US2009/047267 WO2009158217A2 (en) | 2008-06-27 | 2009-06-12 | Cluster shared volumes |
Publications (3)
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JP2011526038A JP2011526038A (ja) | 2011-09-29 |
JP2011526038A5 JP2011526038A5 (ja) | 2012-03-22 |
JP5059974B2 true JP5059974B2 (ja) | 2012-10-31 |
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US (2) | US7840730B2 (ja) |
EP (1) | EP2316077A4 (ja) |
JP (1) | JP5059974B2 (ja) |
CN (1) | CN102077193B (ja) |
WO (1) | WO2009158217A2 (ja) |
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