JP2013101672A - ストレージ用論理データオブジェクトの変換方法およびシステム - Google Patents
ストレージ用論理データオブジェクトの変換方法およびシステム Download PDFInfo
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Abstract
【解決手段】オリジナルファイル201の圧縮は、ヘッダ204と1以上の予め規定されたサイズに割り当てられた圧縮セクション202−1〜202−6とを具える圧縮ファイル203をストレージ装置内に作成するステップと、1またはそれ以上の連続的に取得されるオリジナルファイル201に対応する未処理データのチャンク202−1〜202−6を圧縮して処理済みデータチャンク207−1〜207−6を生成するステップと、この処理済みデータチャンクを、チャンクが受け取られた順番に従って圧縮セクション205−1〜205−2に連続的に収容するステップであって、圧縮セクションはオリジナルファイルの入出力トランザクションにおける圧縮/解凍動作の原子要素であるステップとを具える。
【選択図】図2a
Description
米国特許番号5,813,011(Yoshida et al.)「Storage of a compressed file containing its own compression omanagement table」;
米国特許番号5,813,017(Morris et al.)「System and method for reducing storage requirement in backup subsystems utilizing segmented compression and diffrencing」;
米国特許番号5,956,504(Jagadish et al.)「Method and system for compressing a data stream in a database log so as to permit recovery of only selected portions of the data stream」;
米国特許番号6,092,071(Bolan et al.)「Dedicated input/output processor method and apparatus for access and storage of compressed data」;
米国特許番号6,115,787(Obara et al.)「Disc storage system having cache memory which stores compressed data」;
米国特許番号6,349,375(Faulkner et al.)「Compression of data in read only storage and embedded systems」;
米国特許番号6,449,689(Corcoran et al.)「System and method for efficiently storing compressed data on a hard disk drive」;
米国特許番号6,532,121(Rust et al.)「Compression algorithm with embedded meta-data for partial record operation augmented with expansion joints」;
米国特許出願番号2002/078241(Vidal et al.)「Method of accelerating media transfer」;
米国特許出願番号2004/030,813(Benveniste et al.)「Method and system for storing memory compressed data onto memory compressed disks」;
米国特許出願番号2004/054,858(Sashikanth et al.)「Method and mechanism for on-line data compression and in-place updates」;
米国特許出願番号2006/230,014(Amit et al.)「Method and system for compression of files for storage and operation on compressed files」;
米国特許出願番号2006/190,643(Amit et al.)「Method and system for compression of data for block mode access storage」
米国特許番号5,235,641(Kakuse et al.)「File encryption method and file cryptographic system」;
米国特許出願番号2004/153,642(Avida et al.)「Encryption based security system for network storage」;
米国特許出願番号2005/204,154(Osaki et al.)「Method and apparatus for cryptographic conversion in a data storage system」;
米国特許番号5,285,497(Thatcher)「Methods and apparatus for scrambling and unscrambling compressed data streams」;
米国特許番号6,122,378(Yoshiura et al.)「Method and device for compressing and ciphering data」;
米国特許番号6,154,542(Crandall)「Method and apparatus for simultaneously encrypting and compressing data」;
米国特許番号6,157,720(Yoshiura et al.)「Method and apparatus for encrypting data」;
米国特許出願番号2004/218,760(Chaudhuri)「System and method for data encryption and compression」;
米国特許出願番号2004/264,698(Oda)「Data encrypting device, data decoding device, image data storing device and image forming apparatus」;
ドイツ特許出願2,315,575(Mansour et al.)「Encryption circuit in I/O subsystem」
−各リクエストに応じて、ヘッダと1以上の予め規定されたサイズに割り当てられた圧縮セクションとを具える圧縮された論理データオブジェクトをストレージ装置内に作成するステップと;
−1またはそれ以上の連続的に取得される、前記未処理の圧縮論理データオブジェクトに対応する未処理データのチャンク(chunks)を処理して処理済みデータチャンクを生成するステップであって、前記処理済みデータチャンクは前記処理の結果物である圧縮データを含むステップと;
−前記処理済みデータチャンクを、前記チャンクが受け取られた順番に従って前記圧縮セクションに連続的に収容するステップと;
−前記未処理の論理データオブジェクトと前記圧縮セクションに収容されたデータ間のマッピングを促進するステップとを具える。
−各リクエストに応じて、前記データ範囲に対応する未処理データの1またはそれ以上の連続的に取得されるチャンクを処理するステップであって、ここで処理されるデータチャンクの1以上が前記処理により得られる圧縮データを含むステップと、
−前記処理済みデータチャンクを、これらとその前に受け取ったチャンクの順番に従って連続的に収容するステップと、
−前記マッピングを、前記範囲内のデータと前記圧縮論理オブジェクトに収容された前記データチャンクから読み出されるデータとの一対一の関係を促進する方法で更新するステップとを具える。
−すべての新規なデータチャンクに関する情報を追加するステップであって、前記情報は未処理の各データチャンクのオフセットとサイズに関するステップと、
−前に取得された生存に関する情報および/または前記範囲に対応する古いデータを更新するステップとを具える。
−各リクエストに応じて、作成されおよび/または前記範囲内のデータに関するインデックスセクション内で最後に更新されたすべてのエントリを検出するステップと;
−前記検出されたエントリに対応する前記圧縮セクションの1つを解凍し、前記エントリから提供されるマッピングに応じて読み出すべきデータを抽出するステップと;
−前記範囲からすべてのデータを抽出するまで、前記検出されたエントリに対応する1またはそれ以上の圧縮セクションについて上記ステップを繰り返すステップと;
−前記抽出したデータを前記範囲における順番にしたがって配列するステップとを具える。
−所定のパーセント以上の古いデータを含む1またはそれ以上の圧縮セクションを特定し、古い圧縮セクションとするステップと;
−前記特定された古いセクションを解凍しライブデータを抽出するステップと;
−前記抽出したライブデータを圧縮して1またはそれ以上の新たな処理済みチャンクとしてアクティブセクションに連続的に収容するステップと;
−前記古い圧縮セクションを前記圧縮論理データオブジェクトから解放するステップとを具える。
−論理データオブジェクトを開くときにリカバリステータスを認識したらリカバリ処理を開始するステップと;
−変換された論理オブジェクトを1またはそれ以上のマッピングされていない圧縮セクションを検出すべく検証するステップであって、前記マッピングされていない圧縮セクションは1以上のマッピングされていない処理済みデータチャンクを具えるステップと;
−最後に処理されたデータチャンクから開始して反対のフラグのデータチャンクが見つかるまで、前記マッピングされていない圧縮セクションに含まれる前記処理済みデータチャンクを逆の順序で連続的に解凍するステップと;
−前記解凍されたチャンクを再処理するステップと;
−前記処理済み解凍データチャンクに対応する1またはそれ以上のエントリでインデックスセクションを作成するステップと;
−リカバリ成功の表示を提供するステップとを具える。
−各リクエストに応じて、ヘッダと1以上の予め規定されたサイズに割り当てられた圧縮セクションとを具える圧縮された論理データオブジェクトを前記ストレージ装置内に作成するステップと;
−1またはそれ以上の連続的に取得される、前記未処理の圧縮論理データオブジェクトに対応する未処理データのチャンク(chunks)を圧縮して処理済みデータチャンクを生成するステップと;
−この処理済みデータチャンクを、前記チャンクが受け取られた順番に従って前記圧縮セクションに連続的に収容するステップであって、前記圧縮セクションは前記論理データオブジェクトの入出力トランザクションにおける圧縮/解凍動作の原子要素であるステップとを具える。
−ヘッダと1以上の予め規定されたサイズに割り当てられた圧縮セクションとを具える圧縮された論理データオブジェクトを前記ストレージ装置内に作成する手段と;
−1またはそれ以上の連続的に取得される、前記未処理の圧縮論理データオブジェクトに対応する未処理データのチャンク(chunks)を処理して処理済みデータチャンクを生成する手段であって、前記処理済みデータチャンクの少なくとも1は前記処理の結果物である圧縮データを含む手段と;
−前記処理済みデータチャンクを、前記チャンクが受け取られた順番に従って前記圧縮セクションに連続的に収容するステップと;
−前記未処理の論理データオブジェクトと前記圧縮セクションに収容されたデータ間のマッピングを促進する手段とを具える。
1)インデックスセクションのすべてのログレコード(POS、Size)を見て、Pos≦PosL<Pos+SizeLの位置(Pos)を含むログレコードを探し:
a.見つかった場合に、そのログレコードを(Pos,PosL−Pos)に更新し、2)へ進む;
b.見つからない場合に、更新を終了する
2)SizeLをSize−PosL−Posと比較し:
a.大きい場合に、PosL≦Pos1<PosL+SizeLのすべてのログレコード(Pos1,Size1)を探す。これらのログレコードのなかから、最大位置をもつログレコードを探し、これを(PosL+SizeL,SizeL−(SizeL−Pos1))に更新し、前記ログレコードの他のログを削除して更新を終了する。
b.小さい場合に、(PosL+SizeL,Size−(PosL+SizeL−Pos))のログレコードを追加して更新を終了する。
c.等しい場合、更新を終了する。
1)位置(PosL)とサイズ(SizeL)を有する新たなログレコードを用意する。
2)インデックスセクションのすべてのログレコード(Pos、Size)を見て、Pos≦PosL<Pos+SizeLの位置(Pos)を含むログレコードを探し:
a.見つかった場合に、そのログレコードを(Pos,PosL−Pos)に更新し、3)へ進む;
b.見つからない場合に、インデックステーブルに(PosL,SizeL)を追加し、更新を終了する
2)SizeLをSize−PosL−Posと比較し:
a.大きい場合に、(PosL,Size−PosL−Pos)のログレコードを追加する。PosLを新たなPosL 1=Pos+Sizeに変更し、SizeLを新たなSizeL 1=SizeL−(PosL 1−PosL)に変更し、2)に戻る。
b.小さい場合に、ログレコード(PosL,SizeL)と(PosL+SizeL,Size−(PosL+SizeL−Pos)を追加し、更新を終了する。
c.等しい場合、ログレコード(PosL,SizeL)を追加し、更新を終了する。
Claims (32)
- 1以上のストレージプロトコルで動作するストレージ装置に保存すべく論理データオブジェクトを変換する方法であって、当該方法が:
各リクエストに応じて、ヘッダと予め規定されたサイズの複数の収容セクションとを具える変換された論理データオブジェクトを前記ストレージ装置内に作成するステップと;
複数のデータチャンクを処理して複数の処理済みデータチャンクを生成するステップであって、前記複数の処理済みデータチャンクはそれぞれ前記処理の結果である変換データを含むステップと;
前記複数の処理済みデータチャンクを、前記複数のデータチャンクが受け取られた順番に従って前記複数の収容セクションに連続的に収容するステップと;
前記論理データオブジェクトと前記複数の収容セクションに収容されたデータ間のマッピングを行うステップとを具えることを特徴とする方法。 - 請求項1記載の方法において、前記処理は、1より多いデータ変換技術を含むことを特徴とする方法。
- 請求項2記載の方法において、2以上のデータ変換技術が同時に統合され、協働して自律的に命令のセットを実行し、処理および複数の処理済みデータチャンクの収容のシーケンスの保存を容易にする方法で提供されることを特徴とする方法。
- 請求項1記載の方法において、前記処理が、前記論理データオブジェクトの変換に対応して前記複数のデータチャンクを圧縮して複数の平文の圧縮データチャンクを得るステップと、さらに前記複数の平文の圧縮データチャンクを暗号化して、複数の処理済みデータチャンクを作成するステップとを含むことを特徴とする方法。
- 1以上のストレージプロトコルで動作可能なストレージ装置内に保存するために論理データオブジェクトを変化する方法において、当該方法が:
各リクエストに応じて、前記ストレージ装置内にヘッダと所定サイズの複数の収容セクションとを有する変換済み論理データオブジェクトを生成するステップと、
多様なサイズを有し前記変換済み論理データオブジェクトに対応する複数のデータチャンクを受信するステップと、
前記複数のデータチャンクを変換して、複数の変換済みデータチャンクを作成するステップと、
前記複数の変換済みデータチャンクを前記複数の収容セクションに、前記複数のデータチャンクが受信された順番で連続的に収容するステップであって、前記複数の収容セクションは前記論理データオブジェクトの入出力トランザクションにおいて変換/逆変換の原子要素として作用する、ステップとを含むことを特徴とする方法。 - 請求項5記載の方法において、さらに、各収容セクションについて、逆変換された場合に前記収容セクションから取得できるデータと、前記変換の結果として前記セクションに収容された各々の変換済みデータチャンク内のデータとが実質的に同一となるようにするステップを含むことを特徴とする方法。
- 請求項5記載の方法において、前記変換は、1より多いデータ変換技術を含むことを特徴とする方法。
- 請求項7記載の方法において、2以上のデータ変換技術が同時に統合され、協働して自律的に命令のセットを実行し、処理のシーケンスの保存および複数の処理済みデータチャンクの収容を容易にする方法で提供されることを特徴とする方法。
- 1以上のストレージプロトコルで動作可能なストレージ装置内に保存するために論理データオブジェクトを変化する方法において、当該方法が:
各リクエストに応じて、前記ストレージ装置内にヘッダと所定サイズの複数の収容セクションとを有する変換済み論理データオブジェクトを生成するステップと、
多様なサイズを有し前記変換済み論理データオブジェクトに対応する複数のデータチャンクを受信するステップと、
前記複数のデータチャンクを処理するステップであって、前記処理は前記複数のデータチャンクの各々を圧縮して複数の平文の圧縮データチャンクを得るステップと、さらに前記複数の平文の圧縮データチャンクの各々を暗号化して複数の処理済みデータチャンクを作成するステップとを含む、ステップと、
前記複数の変換済みデータチャンクを前記複数の収容セクションに、前記複数のデータチャンクが受信された順番で連続的に収容するステップと、
変換された前記論理データオブジェクトと前記複数の収容セクションに収容されたデータ間のマッピングを行うステップとを含むことを特徴とする方法。 - 請求項9記載の方法において、前記暗号化と圧縮の処理は同時に統合され、協働して自律的に命令のセットを実行し、処理のシーケンスの保存および複数の処理済みデータチャンクの収容を容易にする方法で提供されることを特徴とする方法。
- 請求項9記載の方法において、前記マッピングは、前記変換済み論理データオブジェクトの一部を構成する1以上のインデックスセクションの補助で提供され、前記インデックスセクションは少なくとも、1以上の収容セクションに収容された複数の処理済みデータチャンクに関する情報と、前記複数の収容セクションに関する物理的な保存場所のインジケーションとを保持する1以上のエントリを含むことを特徴とする方法。
- 請求項9記載の方法において、所定のサイズは、前記複数の収容セクションの各々と等しいことを特徴とする方法。
- 請求項9記載の方法において、前記複数の収容セクションの各々のサイズは、所定の条件に基づいて所定のサイズのリストから選択されることを特徴とする方法。
- 請求項9記載の方法において、前記圧縮は、適応型辞書(adaptive dictionary)の補助で提供され、同じ収容セクションに収容された複数の処理済みデータチャンクは同じ辞書の補助で圧縮され同じ鍵の補助で暗号化されることを特徴とする方法。
- 請求項9記載の方法において、前記変換済み論理データオブジェクトのヘッダは、前記変換済み論理データオブジェクトのユニークな識別子と、前記変換済み論理データオブジェクトのサイズに関する情報とを含むことを特徴とする方法。
- 請求項9記載の方法において、前記複数の処理済みデータチャンクは、ログ形式で収容されることを特徴とする方法。
- 請求項16記載の方法において、処理済みデータチャンクのログは、変換済み論理データオブジェクト内の処理済みデータチャンクのオフセットに関する情報を含むログヘッダと、前記処理済みデータチャンクのサイズと、前記ログとこのログを収容する収容セクションを結びつける識別子とを具えることを特徴とする方法。
- 請求項16記載の方法において、前記変換済み論理データオブジェクトは、1以上のインデックスセクションを具え、当該セクションは1以上の収容セクションに関連する1以上のエントリを具え、前記エントリは前記1以上の収容セクションの物理的な保存場所への1以上のインジケータと前記複数の収容セクションに収容された各ログに関する1以上のログレコードとを具え、前記処理済み論理データオブジェクト内のデータと前記収容セクションに収容されたデータ間のマッピングを容易にする情報を具えることを特徴とする方法。
- 請求項9記載の方法において、各収容セクションは、前記収容セクションのそれぞれの物理的な位置の使用/再使用状態を示すフラグを伴い、各処理済みデータチャンクは、当該処理済みデータチャンクを収容する収容セクションと同じフラグを伴うことを特徴とする方法。
- 請求項11記載の方法において、前記変換済み論理データオブジェクトが第1のインデックスセクションへのインジケータを含み、各インデックスセクションは、もしある場合に次の連続するインデックスセクションへのインジケータを含むことを特徴とする方法。
- 請求項9の方法ステージを実行するよう構成されたことを特徴とする、ストレージネットワークで動作する通信機器。
- 請求項9の方法ステージを実行するよう構成されたことを特徴とする、ストレージネットワークで動作するストレージ装置。
- システムに機能的に接続されたストレージ装置に保存するために論理データオブジェクトを変換しうるシステムであって、請求項9の方法ステージを実行するよう構成されたことを特徴とするシステム。
- 請求項9記載の方法において、少なくともファイルアクセスストレージプロトコルで動作可能であることを特徴とする方法。
- 請求項9記載の方法において、少なくともブロックモードアクセスストレージプロトコルで動作可能であることを特徴とする方法。
- 請求項9に従って作成される変換済み論理データオブジェクトにデータ範囲を書き込む方法であって:
各リクエストに応じて、前記複数のチャンクを圧縮して複数の平文の圧縮データ着を得て、さらに前記複数の平文の圧縮チャンクを暗号化して複数の処理済みデータチャンクを作成するステップと、
前記複数の処理済みデータチャンクを、これらとその前に収容するために受け取った処理済みデータチャンクの順番に従って連続的に収容するステップと、
前記マッピングを、前記範囲内のデータと前記変換済み論理オブジェクトに収容された前記複数の処理済みデータチャンクから読み出されるデータとの一対一の関係を実現する方法で更新するステップとを具えることを特徴とする方法。 - 請求項26記載の方法において、アクティブな収容セクションに含まれる空きスペースに依存して、新たな処理済みデータチャンクがアクティブな収容セクションおよび/または新たな収容セクションに収容されることを特徴とする方法。
- 請求項26記載の方法において、前記マッピングを更新するステップが:
a)すべての新規な処理済みデータチャンクに関する情報を追加するステップであって、前記情報は処理済みの各データチャンクのオフセットとサイズに関するステップと、
b)前記範囲に対応するデータのライブおよび/または古いかに関する前に取得された情報を更新するステップとを具えることを特徴とする方法。 - 請求項11に従って作成される変換済み論理オブジェクトからデータ範囲を読み出す方法であって、当該方法が:
各リクエストに応じて、前記範囲内のデータに関するインデックスセクション内で作成されおよび/または最後に更新されたすべてのエントリを検出するステップと;
前記検出されたエントリに対応する前記複数の収容セクションの1つを逆変換し、前記エントリから提供されるマッピングに応じて読み出すべきデータを抽出するステップと;
前記範囲からすべてのデータを抽出するまで、前記検出されたエントリに対応する前記複数の収容セクション内の1またはそれ以上の収容セクションについて前記逆変換を繰り返すステップと;
前記抽出したデータを前記範囲における順番にしたがって配列するステップとを具えることを特徴とする方法。 - 少なくとも1のストレージプロトコルで動作するストレージ装置内に保存するために論理データオブジェクトを変換しうるシステムであって:
ヘッダと複数の予め規定されたサイズの収容セクションとを具える変換済み論理データオブジェクトを前記ストレージ装置内に作成する手段と;
多様なサイズを有し前記変換済み論理データオブジェクトに対応する複数のデータチャンクを受信する手段と、
前記複数のデータチャンクの各々を処理する手段であって、前記処理は前記複数のデータチャンクの各々を圧縮して複数の平文の圧縮データチャンクを得るステップと、さらに前記複数の平文の圧縮データチャンクの各々を暗号化して複数の処理済みデータチャンクを作成するステップとを含む、手段と、
前記処理済みデータチャンクを前記複数の収容セクションに、前記データチャンクが受信された順番で連続的に収容するのを容易にする手段と、
前記論理データオブジェクト内のデータと前記複数の収容セクションに収容されたデータ間のマッピングを行う手段とを具えることをことを特徴とするシステム。 - 少なくとも1のストレージプロトコルで動作するストレージ装置内に保存するために論理データオブジェクトを変換する方法を実行するための機械により実行可能な命令のプログラムを搭載した機械読み取り可能なプログラムストレージ装置であって、前記方法が:
各リクエストに応じて、ヘッダと予め規定されたサイズの複数の収容セクションとを具える変換済み論理データオブジェクトを前記ストレージ装置内に作成するステップと;
多様なサイズを有し前記変換済み論理データオブジェクトに対応する複数のデータチャンクを受信するステップと、
前記複数のデータチャンクを連続的に処理するステップであって、前記処理は前記複数のデータチャンクの各々を圧縮して複数の平文の圧縮データチャンクを得るステップと、さらに前記複数の平文の圧縮データチャンクの各々を暗号化して保存用の複数の処理済みデータチャンクを作成するステップとを含む、ステップと、
前記複数の変換済みデータチャンクを前記複数の収容セクションに、前記複数のデータチャンクが受信された順番で連続的に収容するステップと、
変換された前記論理データオブジェクト内のデータと前記複数の収容セクションに収容されたデータ間のマッピングを行うステップとを含むことを特徴とする方法。 - 少なくとも1のストレージプロトコルで動作するストレージ装置内に保存するために論理データオブジェクトを変換するコンピュータ読み取り可能なプログラムコードを有するコンピュータ利用可能な媒体を具えるコンピュータプログラム製品であって:
各リクエストに応じて、ヘッダと複数の予め規定されたサイズの収容セクションとを具える変換済み論理データオブジェクトを前記ストレージ装置内に作成するステップを前記コンピュータに実行させるコンピュータ読み取り可能なプログラムコードと;
多様なサイズを有し前記変換済み論理データオブジェクトに対応する複数のデータチャンクを受信するステップを前記コンピュータに実行させるコンピュータ読み取り可能なプログラムコードと;
複数のデータチャンクを処理するステップであって、前記処理は前記複数のデータチャンクの各々を圧縮して複数の平文の圧縮データチャンクを得るステップと、さらに前記複数の平文の圧縮データチャンクの各々を暗号化して保存用の複数の処理済みデータチャンクを作成するステップとを含む、ステップを前記コンピュータに実行させるコンピュータ読み取り可能なプログラムコードと;
前記複数の変換済みデータチャンクを前記複数の収容セクションに、前記複数のデータチャンクが受信された順番で連続的に収容するステップを前記コンピュータに実行させるコンピュータ読み取り可能なプログラムコードと;
変換された前記論理データオブジェクト内のデータと前記複数の収容セクションに収容されたデータ間のマッピングを行うステップ前記コンピュータに実行させるコンピュータ読み取り可能なプログラムコードとを具えることを特徴とするコンピュータプログラム製品。
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