Checkpointing filesystem

Gara, Alan G; Giampapa, Mark E; Steinmacher-Burow, Burkhard D

Title: Checkpointing filesystem

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Abstract

The present in invention is directed to a checkpointing filesystem of a distributed-memory parallel supercomputer comprising a node that accesses user data on the filesystem, the filesystem comprising an interface that is associated with a disk for storing the user data. The checkpointing filesystem provides for taking and checkpoint of the filesystem and rolling back to a previously taken checkpoint, as well as for writing user data to and deleting user data from the checkpointing filesystem. The checkpointing filesystem provides a recently written file allocation table (WFAT) for maintaining information regarding the user data written since a previously taken checkpoint and a recently deleted file allocation table (DFAT) for maintaining information regarding user data deleted from since the previously taken checkpoint, both of which are utilized by the checkpointing filesystem to take a checkpoint of the filesystem and rollback the filesystem to a previously taken checkpoint, as well as to write and delete user data from the checkpointing filesystem.

Inventors:

Gara, Alan G ^[1]; Giampapa, Mark E ^[2]; Steinmacher-Burow, Burkhard D ^[1]

Mount Kisco, NY
Irvington, NY

Issue Date:: 2005-05-17

Research Org.:: International Business Machines Corp., Armonk, NY (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 949193

Patent Number(s):: 6895416

Application Number:: 10/258,515

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}
G06F11/1438 - {Restarting or rejuvenating}

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}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10S707/99953 - Recoverability

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}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10S707/99955 - Archiving or backup

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:: B517552

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Citation Formats


                    Gara, Alan G, Giampapa, Mark E, and Steinmacher-Burow, Burkhard D. Checkpointing filesystem.  United States: N. p., 2005. 
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                    Gara, Alan G, Giampapa, Mark E, & Steinmacher-Burow, Burkhard D. Checkpointing filesystem.  United States.

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                    Gara, Alan G, Giampapa, Mark E, and Steinmacher-Burow, Burkhard D. Tue .  
        "Checkpointing filesystem".  United States.  https://www.osti.gov/servlets/purl/949193.

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@article{osti_949193,

  title        = {Checkpointing filesystem},

  author       = {Gara, Alan G and Giampapa, Mark E and Steinmacher-Burow, Burkhard D},

  abstractNote = {The present in invention is directed to a checkpointing filesystem of a distributed-memory parallel supercomputer comprising a node that accesses user data on the filesystem, the filesystem comprising an interface that is associated with a disk for storing the user data. The checkpointing filesystem provides for taking and checkpoint of the filesystem and rolling back to a previously taken checkpoint, as well as for writing user data to and deleting user data from the checkpointing filesystem. The checkpointing filesystem provides a recently written file allocation table (WFAT) for maintaining information regarding the user data written since a previously taken checkpoint and a recently deleted file allocation table (DFAT) for maintaining information regarding user data deleted from since the previously taken checkpoint, both of which are utilized by the checkpointing filesystem to take a checkpoint of the filesystem and rollback the filesystem to a previously taken checkpoint, as well as to write and delete user data from the checkpointing filesystem.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2005},

  month        = {5}

}

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