IN2013KO01274A - - Google Patents

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Publication number
IN2013KO01274A
IN2013KO01274A IN1274KO2013A IN2013KO01274A IN 2013KO01274 A IN2013KO01274 A IN 2013KO01274A IN 1274KO2013 A IN1274KO2013 A IN 1274KO2013A IN 2013KO01274 A IN2013KO01274 A IN 2013KO01274A
Authority
IN
India
Prior art keywords
node
data
virtual volume
log entries
data transfer
Prior art date
Application number
Inventor
Samanta Sumanesh
Christian Simionescu Horia
Bert Luca
Kr Mridha Debal
Rao Goli Mohana
Original Assignee
Lsi Corp
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 Lsi Corp filed Critical Lsi Corp
Priority to IN1274KO2013 priority Critical patent/IN2013KO01274A/en
Priority to US14/091,397 priority patent/US9286175B2/en
Publication of IN2013KO01274A publication Critical patent/IN2013KO01274A/en

Links

Classifications

    • 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
    • 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
    • G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
    • G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
    • G06F11/1076—Parity data used in redundant arrays of independent storages, e.g. in RAID systems
    • 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
    • G06F11/2064—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 while ensuring consistency
    • 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
    • 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
    • G06F11/1658—Data re-synchronization of a redundant component, or initial sync of replacement, additional or spare unit
    • G06F11/1662—Data re-synchronization of a redundant component, or initial sync of replacement, additional or spare unit the resynchronized component or unit being a persistent storage device
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2201/00—Indexing scheme relating to error detection, to error correction, and to monitoring
    • G06F2201/82—Solving problems relating to consistency

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Quality & Reliability (AREA)
  • Human Computer Interaction (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

Abstract

The disclosure is directed to preserving data consistency in a multiple- node data storage system. According to various embodiments, a write log is maintained including log entries for data transfer requests being served by a respective node of the multiple-node data storage system. Rather than maintaining a full write journal of data and parity associated with each data transfer request, the log entries only need to identify portions of the virtual volume being updated according to the data transfer requests served by each node. When a first node fails, a second node takes over administration of a virtual volume for the failed node. Upon taking over for the first (failed) node, the second node resolves any inconsistencies between data and parity in portions of the virtual volume identified the respective log entries. Accordingly, write holes are prevented without substantially increasing memory usage or system complexity.
IN1274KO2013 2013-11-08 2013-11-08 IN2013KO01274A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
IN1274KO2013 IN2013KO01274A (en) 2013-11-08 2013-11-08
US14/091,397 US9286175B2 (en) 2013-11-08 2013-11-27 System and method of write hole protection for a multiple-node storage cluster

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IN1274KO2013 IN2013KO01274A (en) 2013-11-08 2013-11-08

Publications (1)

Publication Number Publication Date
IN2013KO01274A true IN2013KO01274A (en) 2015-05-15

Family

ID=53044886

Family Applications (1)

Application Number Title Priority Date Filing Date
IN1274KO2013 IN2013KO01274A (en) 2013-11-08 2013-11-08

Country Status (2)

Country Link
US (1) US9286175B2 (en)
IN (1) IN2013KO01274A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170031791A1 (en) * 2015-07-27 2017-02-02 Futurewei Technologies, Inc. Maintaining a parity-inconsistent table to identify stripes affected by a write hole effect
WO2018165958A1 (en) 2017-03-16 2018-09-20 Microsoft Technology Licensing, Llc. Storage system control
US10481979B2 (en) * 2017-09-28 2019-11-19 Intel Corporation Storage system, computing system, and methods thereof
KR20200035592A (en) 2018-09-27 2020-04-06 삼성전자주식회사 Method of operating storage device, storage device performing the same and storage system including the same
US10970169B2 (en) * 2019-06-27 2021-04-06 General Electric Company Data configuration management system for an engine
CN113010119B (en) * 2021-04-27 2022-09-30 宏图智能物流股份有限公司 Method for realizing distributed storage of voice data through main/standby mode
US11599412B1 (en) * 2021-09-15 2023-03-07 Cisco Technology, Inc. Method and apparatus for distributed erasure encoding

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997001139A1 (en) 1995-06-23 1997-01-09 Elonex Plc Disk array controller with enhanced synchronous write
US6067635A (en) * 1995-10-27 2000-05-23 Lsi Logic Corporation Preservation of data integrity in a raid storage device
US6891690B2 (en) * 2002-11-20 2005-05-10 International Business Machines Corporation On-drive integrated sector format raid error correction code system and method
US7779294B2 (en) * 2005-04-15 2010-08-17 Intel Corporation Power-safe disk storage apparatus, systems, and methods
US7536586B2 (en) 2006-01-12 2009-05-19 Dell Products L.P. System and method for the management of failure recovery in multiple-node shared-storage environments
US8255739B1 (en) 2008-06-30 2012-08-28 American Megatrends, Inc. Achieving data consistency in a node failover with a degraded RAID array
US20100031262A1 (en) * 2008-07-31 2010-02-04 Baird-Gent Jill M Program Schedule Sub-Project Network and Calendar Merge

Also Published As

Publication number Publication date
US9286175B2 (en) 2016-03-15
US20150135006A1 (en) 2015-05-14

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