JP5934344B2 - 仮想記憶ディスク技術 - Google Patents
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/02—Addressing or allocation; Relocation
- G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- 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
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/061—Improving I/O performance
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- G—PHYSICS
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- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- 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
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0614—Improving the reliability of storage systems
- G06F3/0619—Improving the reliability of storage systems in relation to data integrity, e.g. data losses, bit errors
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- G06—COMPUTING; CALCULATING OR COUNTING
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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
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0638—Organizing or formatting or addressing of data
- G06F3/0643—Management of files
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- G06—COMPUTING; CALCULATING OR COUNTING
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- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- 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
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0638—Organizing or formatting or addressing of data
- G06F3/0644—Management of space entities, e.g. partitions, extents, pools
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
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- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- 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
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0655—Vertical data movement, i.e. input-output transfer; data movement between one or more hosts and one or more storage devices
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- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
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- G06F3/0662—Virtualisation aspects
- G06F3/0664—Virtualisation aspects at device level, e.g. emulation of a storage device or system
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- G06—COMPUTING; CALCULATING OR COUNTING
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- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- 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
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
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- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
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- G06F9/45545—Guest-host, i.e. hypervisor is an application program itself, e.g. VirtualBox
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- G—PHYSICS
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- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
- G06F2009/45583—Memory management, e.g. access or allocation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- 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
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/0671—In-line storage system
- G06F3/0683—Plurality of storage devices
- G06F3/0689—Disk arrays, e.g. RAID, JBOD
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1202—Dedicated interfaces to print systems specifically adapted to achieve a particular effect
- G06F3/121—Facilitating exception or error detection and recovery, e.g. fault, media or consumables depleted
Description
Claims (10)
- プロセッサにより実行されると該プロセッサに、
複数の仮想ディスクファイルのチェーンのうちの第1の仮想ディスクファイルを開き、該第1の仮想ディスクファイルは、第1の固有識別子と、仮想ディスク内のデータの少なくとも一部を形成する仮想ディスク範囲データと、を有し、前記第1の仮想ディスクファイルの割り当てテーブルは、前記仮想ディスク範囲データが前記第1の仮想ディスクファイルのセクションにより定められるか否か、又は前記仮想ディスク範囲データが前記複数の仮想ディスクファイルのチェーンのうちの第2の仮想ディスクファイルにより定められるか否かを示す状態情報を有し、
前記割り当てテーブルにアクセスし、前記仮想ディスク範囲データが前記第1の仮想ディスクファイルのセクションにより定められるか否かを決定し、
ユーザペイロード、ディスク終端識別子、又は異なるセクションに向けられるリード動作を生じる前記割り当てテーブル内のエントリを変更する情報を前記第1の仮想ディスクファイルに書き込む試みの検出に応答して、前記第1の仮想ディスクファイル内の前記第1の固有識別子を第2の固有識別子で上書きし、
前記第2の固有識別子が、物理的記憶装置に永続的に格納される、前記第1の仮想ディスクファイルのコピーに書き込まれたことに応答して、前記第1の仮想ディスクファイルに前記情報を書き込ませる、
命令を有するコンピュータ可読記憶媒体。 - 実行されると前記プロセッサに、
正規化ビットマップ識別子を、子仮想ディスクファイルのみにより定められる仮想ディスク範囲をグループとして識別する正規化ビットマップと関連付け、
前記第1の仮想ディスクファイル内のデータが変更されたのに応答して、前記子仮想ディスクファイル内の前記正規化ビットマップ識別子のコピーを第2の正規化ビットマップ識別子に更新し、
前記正規化ビットマップが前記グループとして識別された前記仮想ディスク範囲の状態を正確に反映するのに応答して、前記情報に関連付けられた前記正規化ビットマップ識別子を前記第2の正規化ビットマップ識別子に更新させる、
命令を更に有する請求項1に記載のコンピュータ可読記憶媒体。 - プロセッサと、
給電されると前記プロセッサと電子的に通信するメモリと、
を有し、前記メモリは、プロセッサにより実行されると該プロセッサに、
複数の仮想ディスクファイルのチェーンのうちの第1の仮想ディスクファイルを開き、該仮想ディスクファイルは、第1の固有識別子と、仮想ディスク内のデータの少なくとも一部を形成する仮想ディスク範囲データと、を有し、前記第1の仮想ディスクファイルの割り当てテーブルは、前記仮想ディスク範囲データが前記第1の仮想ディスクファイルのセクションにより定められるか否か、又は前記仮想ディスク範囲データが前記複数の仮想ディスクファイルのチェーンのうちの第2の仮想ディスクファイルにより定められるかどうかを示す状態情報を有し、
前記割り当てテーブルにアクセスし、前記仮想ディスク範囲データが前記第1の仮想ディスクファイルのセクションにより定められるか否かを決定し、
ユーザペイロード、ディスク終端識別子、又は異なるセクションに向けられるリード動作を生じる前記割り当てテーブル内のエントリを変更する情報を前記第1の仮想ディスクファイルに書き込む試みの検出に応答して、前記第1の仮想ディスクファイル内の前記第1の固有識別子を第2の固有識別子で上書きし、
前記第2の固有識別子が、物理的記憶装置に永続的に格納される、前記第1の仮想ディスクファイルのコピーに書き込まれたことに応答して、前記第1の仮想ディスクファイルに前記情報を書き込ませる、
命令を有する、コンピュータシステム。 - 実行されると前記プロセッサに、
前記第1の仮想ディスクファイル内の固有識別子が親仮想ディスクファイル内にある固有識別子に一致することに応答して、前記仮想ディスクをインスタンス化させる、
命令を更に有する、請求項3に記載のコンピュータシステム。 - 実行されると前記プロセッサに、
前記第1の仮想ディスクファイルが変更されたことに応答して、前記情報と関連付けられた前記第1の固有識別子の前記コピーを前記第2の固有識別子に変更し、
前記情報に対して行われた変更のログをとらせる、
命令を更に有する、請求項3に記載のコンピュータシステム。 - 実行されると前記プロセッサに、
ユーザペイロード、ディスク終端識別子、又は異なるセクションに向けられるリード動作を生じる前記割り当てテーブル内のエントリを変更する親仮想ディスクファイル内の情報を変更しようとする試みを検出し、
前記第1の仮想ディスクファイルを物理的記憶装置に永続的に書き込み、
前記の永続的な書き込みが完了したことを示す信号の受信に応答して、親仮想ディスクファイル内の前記情報を変更させる、
命令を更に有する、請求項3に記載のコンピュータシステム。 - 複数の仮想ディスクファイルのチェーンのうちの親仮想ディスクファイルを開くステップであって、前記親仮想ディスクファイルは子仮想ディスクファイルにリンク付けされ、前記親仮想ディスクファイルは第1の識別子を有し、前記子仮想ディスクファイルは前記第1の識別子のコピーを有し、前記親仮想ディスクファイルの割り当てテーブルは、仮想ディスク範囲データが前記親仮想ディスクファイルのセクションにより定められるか否か、又は前記仮想ディスク範囲データが前記複数の仮想ディスクファイルのチェーンのうちの第2の仮想ディスクファイルにより定められるか否かを示す状態情報を有する、ステップと、
前記割り当てテーブルにアクセスし、前記仮想ディスク範囲データが前記親仮想ディスクファイルのセクションにより定められるか否かを決定するステップと、
前記仮想ディスク範囲データを変更する試みの検出に応答して、前記親仮想ディスクファイル内の前記第1の識別子を第2の識別子で上書きするステップと、
前記親仮想ディスクファイルのコピーを永続的に格納するよう構成される記憶装置に、前記第1の識別子を前記第2の識別子で上書きすることを示す入力/出力ジョブを発行するステップと、
前記記憶装置にフラッシュコマンドを発行するステップと、
前記記憶装置に内部キャッシュの内容が永続的に書き込まれたことを示す信号の受信に応答して、前記仮想ディスク範囲データを変更するステップと、
を有するコンピュータが実施する方法。 - 前記仮想ディスクファイルの前記コピー内の前記第2の識別子が前記子仮想ディスクファイルに格納された前記第1の識別子と一致しないことに応答して、仮想ディスクをインスタンス化する要求を拒否するステップ、
を更に有する請求項7に記載のコンピュータが実施する方法。 - 仮想ディスクをインスタンス化するステップであって、前記仮想ディスクは前記親仮想ディスクファイルにより定められる仮想ディスク範囲と前記子仮想ディスクファイルにより定められる仮想ディスク範囲とを有し、前記子仮想ディスクファイルはシーケンス番号を有する、ステップと、
前記子仮想ディスクファイルにより完全に記述される前記仮想ディスクファイル内の前記仮想ディスク範囲のサブセットを識別する情報を、ランダムアクセスメモリにロードするステップであって、前記情報は前記シーケンス番号のコピーと関連付けられる、ステップと、
前記子仮想ディスクファイルは変更されたことに応答して、前記子仮想ディスクファイル内の前記シーケンス番号を増大するステップと、
前記情報は前記子仮想ディスクファイル内の仮想ディスク範囲の前記サブセットの状態を正確に反映するのに応答して、前記情報と関連付けられた前記シーケンス番号を増大するステップと、
を更に有する請求項7に記載のコンピュータが実施する方法。 - 仮想ディスク範囲のグループのセクタビットマップを前記仮想ディスクファイルに書き込むステップであって、前記仮想ディスクファイルのセクションは、前記セクションが前記仮想ディスクファイルを格納するよう構成された記憶装置のセクタと揃えられるよう選択された仮想ディスクファイルオフセットを有する、ステップ、
を更に有する請求項7に記載のコンピュータが実施する方法。
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US13/094,620 US9519496B2 (en) | 2011-04-26 | 2011-04-26 | Detecting and preventing virtual disk storage linkage faults |
US13/094,620 | 2011-04-26 | ||
PCT/US2011/055591 WO2012148448A1 (en) | 2011-04-26 | 2011-10-10 | Virtual disk storage techniques |
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JP2014517381A JP2014517381A (ja) | 2014-07-17 |
JP5934344B2 true JP5934344B2 (ja) | 2016-06-15 |
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US (2) | US9519496B2 (ja) |
EP (1) | EP2702493B1 (ja) |
JP (1) | JP5934344B2 (ja) |
KR (1) | KR101903817B1 (ja) |
CN (1) | CN103493028B (ja) |
WO (1) | WO2012148448A1 (ja) |
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KR101903817B1 (ko) | 2018-10-02 |
EP2702493A1 (en) | 2014-03-05 |
WO2012148448A1 (en) | 2012-11-01 |
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KR20140018316A (ko) | 2014-02-12 |
JP2014517381A (ja) | 2014-07-17 |
US9519496B2 (en) | 2016-12-13 |
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