JP2005532611A - 仮想記憶装置 - Google Patents
仮想記憶装置 Download PDFInfo
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- JP2005532611A JP2005532611A JP2003584918A JP2003584918A JP2005532611A JP 2005532611 A JP2005532611 A JP 2005532611A JP 2003584918 A JP2003584918 A JP 2003584918A JP 2003584918 A JP2003584918 A JP 2003584918A JP 2005532611 A JP2005532611 A JP 2005532611A
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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
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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
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1415—Saving, restoring, recovering or retrying at system level
- G06F11/1435—Saving, restoring, recovering or retrying at system level using file system or storage system metadata
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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
- G06F3/0608—Saving storage space on storage 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
- G06F3/0614—Improving the reliability of storage 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
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0646—Horizontal data movement in storage systems, i.e. moving data in between storage devices or systems
- G06F3/065—Replication mechanisms
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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
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0662—Virtualisation aspects
- G06F3/0664—Virtualisation aspects at device level, e.g. emulation of a storage device or system
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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
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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
- G06F2003/0697—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers device management, e.g. handlers, drivers, I/O schedulers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S707/00—Data processing: database and file management or data structures
- Y10S707/99931—Database or file accessing
- Y10S707/99938—Concurrency, e.g. lock management in shared database
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S707/00—Data processing: database and file management or data structures
- Y10S707/99941—Database schema or data structure
- Y10S707/99943—Generating database or data structure, e.g. via user interface
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S707/00—Data processing: database and file management or data structures
- Y10S707/99951—File or database maintenance
- Y10S707/99952—Coherency, e.g. same view to multiple users
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S707/00—Data processing: database and file management or data structures
- Y10S707/99951—File or database maintenance
- Y10S707/99952—Coherency, e.g. same view to multiple users
- Y10S707/99953—Recoverability
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S707/00—Data processing: database and file management or data structures
- Y10S707/99951—File or database maintenance
- Y10S707/99952—Coherency, e.g. same view to multiple users
- Y10S707/99954—Version management
Abstract
Description
Claims (10)
- 格納データへアクセスする方法であって、
少なくとも2つの別の記憶エリアの区間を指し示すポインタのテーブルを有する仮想記憶エリアを設け、前記仮想記憶エリアにはデータの区間を設けず、
前記仮想記憶エリアのデータにアクセスする要求に応答して、前記別の記憶エリアのうちのデータを含む特定の1つのエリアを決定し、
ポインタの前記テーブルを用いて、前記別の記憶エリアの前記特定の1つのエリアにあるデータにアクセスすることを備える、方法。 - 請求項1記載の方法において、
前記別の記憶エリアのうちの第1のエリアを仮想記憶エリアと関連付け、前記仮想記憶エリアは別の記憶エリアのうちの前記第1エリアのデータのコピーを表すことを更に備える、方法。 - 請求項2記載の方法において、
前記仮想記憶エリアを別の記憶エリアのうちの前記第1エリアと最初に関連付けるときに、テーブルの全ポインタが初期状態において別の記憶エリアのうちの第1エリアの区間を指し示すようにすることを更に備える、方法。 - 請求項3記載の方法において、
前記別の記憶エリアの前記第1エリア上の第1区間への書き込みに応答して、前記第1区間のデータを前記別の記憶エリアの第2エリア上にある第2区間にコピーし、テーブルのポインタの対応する1つに前記第2区間を指し示させることを更に備える、方法。 - 請求項4記載の方法において、前記第1区間から前記第2区間にデータをコピーする前に、前記第2区間を、データを含まない空き区間として保持することを更に備える、方法。
- 請求項3記載の方法において、
データ・インディケータを前記別の記憶エリアの前記第1エリアの区間と関連付け、特定の区間に対するデータ・インディケータは、前記別の記憶エリアの前記第1エリアを前記仮想記憶エリアと関連付けた後に、前記特定の区間に対して書き込み動作が実行されたか否かを指示することを更に備える、方法。 - 請求項1記載の方法において、データの区間の各々は、データのトラックである、方法。
- 請求項1記載の方法において、前記記憶エリアの各々は記憶装置である、方法。
- 格納データへアクセスする方法であって、
少なくとも2つの別の記憶エリアの区間を指し示すポインタの第1テーブルを有する第1仮想記憶エリアであって、データの区間を含んでいない第1仮想記憶エリアを設け、
前記別の記憶エリアの第1エリアを第1時点における別の記憶エリアの第1エリアのデータのコピーを表す第1仮想記憶エリアと関連付け、
少なくとも2つの別の記憶エリアの区間を指し示すポインタの第2テーブルを有する第2仮想記憶エリアであって、データの区間を含んでいない第2仮想記憶エリアを設け、
前記別の記憶エリアの前記第1エリアを第2時点における前記別の記憶エリアの前記第1エリアのデータのコピーを表す第2仮想記憶エリアと関連付け、
前記仮想記憶エリアの1つのデータにアクセスする要求に応答して、前記別の記憶エリアのうちの特定の1つがデータを収容しているか判定を行い、
ポインタの前記テーブルの1つを用いて、前記別の記憶エリアの特定の1つのデータにアクセスすることを備える、方法。 - 請求項9記載の方法において、
前記第1仮想記憶エリアを前記別の記憶エリアの前記第1エリアに最初に関連付けるときに、前記第1テーブルのポインタ全てに前記別の記憶エリアの前記第1エリアの区間を最初に指し示させ、
前記第2仮想記憶エリアを前記別の記憶エリアの前記第1エリアに最初に関連付けるときに、前記第2テーブルのポインタ全てに前記別の記憶エリアの前記第1エリアの区間を最初に指し示させることを更に備える、方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/120,016 US7340489B2 (en) | 2002-04-10 | 2002-04-10 | Virtual storage devices |
PCT/US2003/011272 WO2003088045A2 (en) | 2002-04-10 | 2003-04-10 | Copy-on-write snapshot for virtual storage devices |
Publications (1)
Publication Number | Publication Date |
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JP2005532611A true JP2005532611A (ja) | 2005-10-27 |
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Application Number | Title | Priority Date | Filing Date |
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JP2003584918A Pending JP2005532611A (ja) | 2002-04-10 | 2003-04-10 | 仮想記憶装置 |
Country Status (5)
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US (7) | US7340489B2 (ja) |
EP (1) | EP1565809A2 (ja) |
JP (1) | JP2005532611A (ja) |
CN (2) | CN100354813C (ja) |
WO (1) | WO2003088045A2 (ja) |
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WO2003088045A3 (en) | 2005-06-30 |
WO2003088045A2 (en) | 2003-10-23 |
US20030195886A1 (en) | 2003-10-16 |
CN100380304C (zh) | 2008-04-09 |
CN100354813C (zh) | 2007-12-12 |
CN1820243A (zh) | 2006-08-16 |
US8032492B2 (en) | 2011-10-04 |
US7340461B2 (en) | 2008-03-04 |
US7249130B2 (en) | 2007-07-24 |
CN1788249A (zh) | 2006-06-14 |
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