WO2002050678A8 - Method of 'split-brain' prevention in computer cluster systems - Google Patents

Method of 'split-brain' prevention in computer cluster systems

Info

Publication number
WO2002050678A8
WO2002050678A8 PCT/US2001/049600 US0149600W WO0250678A8 WO 2002050678 A8 WO2002050678 A8 WO 2002050678A8 US 0149600 W US0149600 W US 0149600W WO 0250678 A8 WO0250678 A8 WO 0250678A8
Authority
WO
WIPO (PCT)
Prior art keywords
server
computer cluster
data
mass storage
dedicated link
Prior art date
Application number
PCT/US2001/049600
Other languages
French (fr)
Other versions
WO2002050678A1 (en
Inventor
Daniel M Price
Original Assignee
Legato Sys 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 Legato Sys Inc filed Critical Legato Sys Inc
Priority to DE60136739T priority Critical patent/DE60136739D1/en
Priority to JP2002551706A priority patent/JP4500490B2/en
Priority to KR1020037008210A priority patent/KR100557399B1/en
Priority to AU3116702A priority patent/AU3116702A/en
Priority to CA002428251A priority patent/CA2428251A1/en
Priority to EP01991440A priority patent/EP1344133B1/en
Priority to AU2002231167A priority patent/AU2002231167B2/en
Publication of WO2002050678A1 publication Critical patent/WO2002050678A1/en
Publication of WO2002050678A8 publication Critical patent/WO2002050678A8/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • 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
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—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
    • G06F11/202—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
    • G06F11/2023—Failover techniques
    • G06F11/2028—Failover techniques eliminating a faulty processor or activating a spare
    • 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
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—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
    • G06F11/202—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
    • G06F11/2035—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 without idle spare hardware
    • 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
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—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
    • G06F11/2053—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 persistent mass storage functionality or persistent mass storage control functionality is redundant
    • G06F11/2056—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 persistent mass storage functionality or persistent mass storage control functionality is redundant by mirroring
    • G06F11/2071—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 persistent mass storage functionality or persistent mass storage control functionality is redundant by mirroring using a plurality of controllers
    • 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
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—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
    • G06F11/202—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
    • G06F11/2023—Failover techniques
    • 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
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—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
    • G06F11/2053—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 persistent mass storage functionality or persistent mass storage control functionality is redundant
    • G06F11/2094—Redundant storage or storage space
    • 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
    • Y10S707/953—Organization of data
    • Y10S707/959—Network
    • 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

Abstract

A method for increasing the availability of a first server (210) included in a computer cluster when a second server (220) fails. Each server (210, 220) in the computer cluster has an associated mass storage device 214, 224 and can process requests from any network device (230, 240, 250) in the computer cluster. Data is mirrored between the mass storage devices (214, 224) of the servers (210, 220) so that each server's mass storage device has a complete copy of all computer cluster data. Data mirroring takes place across a dedicated link (202), which reduces congestion on the rest of the computer cluster. When the first server (210) detects a loss of communication from the second server (220), the first server (210) determines if the loss of communication is a result of a malfunction of the dedicated link (202). If the dedicated link (202) has failed, the first server (210) discontinues operation to avoid writing data to its associated mass storage device (214), which cannot be mirrored due to the loss of communication. If the dedicated link (202) is operational, the first server (210) continues operation. In either case, since each server (210, 220) can process requests from any network device (230, 240, 250) and each server has a complete copy of all the network data, the computer cluster continues to be available for use even after a server is shut down.
PCT/US2001/049600 2000-12-21 2001-12-19 Method of 'split-brain' prevention in computer cluster systems WO2002050678A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE60136739T DE60136739D1 (en) 2000-12-21 2001-12-19 METHOD FOR IMPROVING THE AVAILABILITY OF A COMPUTER CLUSTERING SYSTEM BY USING A NETWORK MEDIUM CONNECTING STATUS FUNCTION
JP2002551706A JP4500490B2 (en) 2000-12-21 2001-12-19 How to prevent "split brain" in computer clustering systems
KR1020037008210A KR100557399B1 (en) 2000-12-21 2001-12-19 A method of improving the availability of a computer clustering system through the use of a network medium link state function
AU3116702A AU3116702A (en) 2000-12-21 2001-12-19 A method of improving the availability of a computer clustering system through the use of a network medium link state function
CA002428251A CA2428251A1 (en) 2000-12-21 2001-12-19 Method of "split-brain" prevention in computer cluster systems
EP01991440A EP1344133B1 (en) 2000-12-21 2001-12-19 A method of improving the availability of a computer clustering system through the use of a network medium link state function
AU2002231167A AU2002231167B2 (en) 2000-12-21 2001-12-19 Method of "split-brain" prevention in computer cluster systems

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US25747800P 2000-12-21 2000-12-21
US60/257,478 2000-12-21
US09/855,592 2001-05-14
US09/855,592 US6785678B2 (en) 2000-12-21 2001-05-14 Method of improving the availability of a computer clustering system through the use of a network medium link state function

Publications (2)

Publication Number Publication Date
WO2002050678A1 WO2002050678A1 (en) 2002-06-27
WO2002050678A8 true WO2002050678A8 (en) 2002-09-19

Family

ID=26945994

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/049600 WO2002050678A1 (en) 2000-12-21 2001-12-19 Method of 'split-brain' prevention in computer cluster systems

Country Status (10)

Country Link
US (2) US6785678B2 (en)
EP (1) EP1344133B1 (en)
JP (1) JP4500490B2 (en)
KR (1) KR100557399B1 (en)
CN (1) CN1264092C (en)
AT (1) ATE415661T1 (en)
AU (2) AU2002231167B2 (en)
CA (1) CA2428251A1 (en)
DE (1) DE60136739D1 (en)
WO (1) WO2002050678A1 (en)

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KR100557399B1 (en) 2006-03-06
CA2428251A1 (en) 2002-06-27
JP4500490B2 (en) 2010-07-14
EP1344133A4 (en) 2007-08-15
DE60136739D1 (en) 2009-01-08
US7409395B2 (en) 2008-08-05
US20050033778A1 (en) 2005-02-10
US6785678B2 (en) 2004-08-31
AU2002231167B2 (en) 2005-10-06
CN1264092C (en) 2006-07-12
ATE415661T1 (en) 2008-12-15
EP1344133A1 (en) 2003-09-17
AU3116702A (en) 2002-07-01
KR20030067712A (en) 2003-08-14
US20020083036A1 (en) 2002-06-27
JP2004516575A (en) 2004-06-03
WO2002050678A1 (en) 2002-06-27
CN1483163A (en) 2004-03-17
EP1344133B1 (en) 2008-11-26

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