Twin-tailed fail-over for fileservers maintaining full performance in the presence of a failure

Coteus, Paul W; Gara, Alan G; Giampapa, Mark E; Heidelberger, Philip; Steinmacher-Burow, Burkhard D

Title: Twin-tailed fail-over for fileservers maintaining full performance in the presence of a failure

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Abstract

A method for maintaining full performance of a file system in the presence of a failure is provided. The file system having N storage devices, where N is an integer greater than zero and N primary file servers where each file server is operatively connected to a corresponding storage device for accessing files therein. The file system further having a secondary file server operatively connected to at least one of the N storage devices. The method including: switching the connection of one of the N storage devices to the secondary file server upon a failure of one of the N primary file servers; and switching the connections of one or more of the remaining storage devices to a primary file server other than the failed file server as necessary so as to prevent a loss in performance and to provide each storage device with an operating file server.

Inventors:

Coteus, Paul W ^[1]; Gara, Alan G ^[2]; Giampapa, Mark E ^[3]; Heidelberger, Philip ^[4]; Steinmacher-Burow, Burkhard D ^[2]

Yorktown Heights, NY
Mount Kisco, NY
Irvington, NY
Cortlandt Manor, NY

Issue Date:: 2008-02-12

Research Org.:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 950120

Patent Number(s):: 7330996

Application Number:: 10/468,990

Assignee:: International Business Machines Corporation (Armonk, NY)

Patent Classifications (CPCs):: H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05K - PRINTED CIRCUITS

G - PHYSICS G06 - COMPUTING G06F - ELECTRIC DIGITAL DATA PROCESSING

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H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05K - PRINTED CIRCUITS
H05K7/20836 - {Thermal management, e.g. server temperature control}

G - PHYSICS G06 - COMPUTING G06F - ELECTRIC DIGITAL DATA PROCESSING
G06F9/52 - Program synchronisation
G06F17/142 - {Fast Fourier transforms, e.g. using a Cooley-Tukey type algorithm}

H - ELECTRICITY H04 - ELECTRIC COMMUNICATION TECHNIQUE H04L - TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
H04L7/0338 - {the correction of the phase error being performed by a feed forward loop}

G - PHYSICS G06 - COMPUTING G06F - ELECTRIC DIGITAL DATA PROCESSING
G06F15/17381 - {Two dimensional, e.g. mesh, torus}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02B - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
Y02B30/70 - Efficient control or regulation technologies

F - MECHANICAL ENGINEERING F04 - POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS F04D - NON-POSITIVE-DISPLACEMENT PUMPS
F04D27/004 - {by varying driving speed}

F - MECHANICAL ENGINEERING F24 - HEATING F24F - AIR-CONDITIONING
F24F11/77 - by controlling the speed of ventilators

F - MECHANICAL ENGINEERING F04 - POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS F04D - NON-POSITIVE-DISPLACEMENT PUMPS
F04D25/166 - {using fans}

G - PHYSICS G09 - EDUCATION G09G - ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
G09G5/008 - {Clock recovery}

G - PHYSICS G06 - COMPUTING G06F - ELECTRIC DIGITAL DATA PROCESSING
G06F9/526 - {Mutual exclusion algorithms}

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DOE Contract Number:: W-7405-ENG-48

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Citation Formats


                    Coteus, Paul W, Gara, Alan G, Giampapa, Mark E, Heidelberger, Philip, and Steinmacher-Burow, Burkhard D. Twin-tailed fail-over for fileservers maintaining full performance in the presence of a failure.  United States: N. p., 2008. 
        Web.

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                    Coteus, Paul W, Gara, Alan G, Giampapa, Mark E, Heidelberger, Philip, & Steinmacher-Burow, Burkhard D. Twin-tailed fail-over for fileservers maintaining full performance in the presence of a failure.  United States.

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                    Coteus, Paul W, Gara, Alan G, Giampapa, Mark E, Heidelberger, Philip, and Steinmacher-Burow, Burkhard D. Tue .  
        "Twin-tailed fail-over for fileservers maintaining full performance in the presence of a failure".  United States.  https://www.osti.gov/servlets/purl/950120.

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@article{osti_950120,

  title        = {Twin-tailed fail-over for fileservers maintaining full performance in the presence of a failure},

  author       = {Coteus, Paul W and Gara, Alan G and Giampapa, Mark E and Heidelberger, Philip and Steinmacher-Burow, Burkhard D},

  abstractNote = {A method for maintaining full performance of a file system in the presence of a failure is provided. The file system having N storage devices, where N is an integer greater than zero and N primary file servers where each file server is operatively connected to a corresponding storage device for accessing files therein. The file system further having a secondary file server operatively connected to at least one of the N storage devices. The method including: switching the connection of one of the N storage devices to the secondary file server upon a failure of one of the N primary file servers; and switching the connections of one or more of the remaining storage devices to a primary file server other than the failed file server as necessary so as to prevent a loss in performance and to provide each storage device with an operating file server.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2008},

  month        = {2}

}

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