WO2005111804A3 - Extension of write anywhere file system layout - Google Patents

Extension of write anywhere file system layout Download PDF

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Publication number
WO2005111804A3
WO2005111804A3 PCT/US2005/013695 US2005013695W WO2005111804A3 WO 2005111804 A3 WO2005111804 A3 WO 2005111804A3 US 2005013695 W US2005013695 W US 2005013695W WO 2005111804 A3 WO2005111804 A3 WO 2005111804A3
Authority
WO
WIPO (PCT)
Prior art keywords
space
file system
layout
vvol
aggregate
Prior art date
Application number
PCT/US2005/013695
Other languages
French (fr)
Other versions
WO2005111804A2 (en
Inventor
John K Edwars
Blake H Lewis
Robert M English
Eric Hamilton
Peter F Corbett
Original Assignee
Network Appliance Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Network Appliance Inc filed Critical Network Appliance Inc
Priority to EP05737438.1A priority Critical patent/EP1743263B1/en
Publication of WO2005111804A2 publication Critical patent/WO2005111804A2/en
Publication of WO2005111804A3 publication Critical patent/WO2005111804A3/en

Links

Classifications

    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/10—File systems; File servers
    • G06F16/18—File system types
    • G06F16/188—Virtual file systems
    • 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
    • G06F3/0619—Improving the reliability of storage systems in relation to data integrity, e.g. data losses, bit errors
    • 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
    • G06F3/0665—Virtualisation aspects at area level, e.g. provisioning of virtual or logical volumes

Abstract

A file system layout apportions an underlying physical volume into one or more virtual volumes (vvols) of a storage system. The underlying physical volume is an aggregate comprising one or more groups of disks, such as RAID groups, of the storage system. The aggregate has its own physical volume block number (pvbn) space and maintains metadata, such as block allocation structures, within that pvbn space. Each vvol has its own virtual volume block number (vvbn) space and maintains meta-data, such as block allocation structures, within that vvbn space. Notably, the block allocation structures of a vvol are sized to the vvol, and not to the underlying aggregate, to thereby allow operations that manage data served by the storage system (e.g., snap-shot operations) to efficiently work over the vvols. The file system layout extends the file system layout of a conventional write anywhere file layout system implementation, yet maintains performance properties of the conventional implementation.
PCT/US2005/013695 2004-04-30 2005-04-21 Extension of write anywhere file system layout WO2005111804A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05737438.1A EP1743263B1 (en) 2004-04-30 2005-04-21 Extension of write anywhere file system layout

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/836,817 US7409494B2 (en) 2004-04-30 2004-04-30 Extension of write anywhere file system layout
US10/836,817 2004-04-30

Publications (2)

Publication Number Publication Date
WO2005111804A2 WO2005111804A2 (en) 2005-11-24
WO2005111804A3 true WO2005111804A3 (en) 2006-05-26

Family

ID=34966436

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/013695 WO2005111804A2 (en) 2004-04-30 2005-04-21 Extension of write anywhere file system layout

Country Status (3)

Country Link
US (4) US7409494B2 (en)
EP (2) EP2287752A1 (en)
WO (1) WO2005111804A2 (en)

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