Patents by Inventor Sarosh C. Havewala
Sarosh C. Havewala has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20150339333Abstract: An extensible file system format for portable storage media is provided. The extensible file system format includes the specification of primary and secondary directory entry types that may be custom defined. The primary and secondary directory entry types can be further classified as critical and benign directory entries. The directory entry types can define whether a cluster chain corresponding to a file can be contiguously allocated.Type: ApplicationFiled: July 31, 2015Publication date: November 26, 2015Inventors: Ravisankar V. Pudipeddi, Vishal V. Ghotge, Sarosh C. Havewala, Ravinder S. Thind, Mark J. Zbikowski, David A. Goebel
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Patent number: 9122695Abstract: An extensible file system format for portable storage media is provided. The extensible file system format includes the specification of primary and secondary directory entry types that may be custom defined. The primary and secondary directory entry types can be further classified as critical and benign directory entries. The directory entry types can define whether a cluster chain corresponding to a file can be contiguously allocated.Type: GrantFiled: August 11, 2014Date of Patent: September 1, 2015Assignee: Microsoft Technology Licensing, LLCInventors: Ravisankar V. Pudipeddi, Vishal V. Ghotge, Sarosh C. Havewala, Ravinder S. Thind, Mark J. Zbikowski, David A. Goebel
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Publication number: 20150229735Abstract: Improved methods and systems for granular opportunistic locking mechanisms (oplocks) are provided for increasing file caching efficiency. Oplocks can be specified with a combination of three possible granular caching intentions: read, write, and/or handle. An oplock can be specified with an identifier that indicates a client/specific caller to avoid breaking the original oplock due to an incompatibility from other requests of the same client. An atomic oplock flag is added to create operations that allow callers to request an atomic open with an oplock with a given file.Type: ApplicationFiled: April 23, 2015Publication date: August 13, 2015Applicant: Microsoft Technology Licensing, LLCInventors: Senthil Rajaram, Neal R. Christiansen, Christian G. Allred, David M. Kruse, Mathew George, Nandagopal Kirubanandan, Sarosh C. Havewala
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Patent number: 9047281Abstract: Improved methods and systems for granular opportunistic locking mechanisms (oplocks) are provided for increasing file caching efficiency. Oplocks can be specified with a combination of three possible granular caching intentions: read, write, and/or handle. An oplock can be specified with an identifier that indicates a client/specific caller to avoid breaking the original oplock due to an incompatibility from other requests of the same client. An atomic oplock flag is added to create operations that allow callers to request an atomic open with an oplock with a given file.Type: GrantFiled: December 30, 2011Date of Patent: June 2, 2015Assignee: Microsoft Technology Licensing, LLCInventors: Senthil Rajaram, Neal R. Christiansen, Christian G. Allred, David M. Kruse, Mathew George, Nandagopal Kirubanandan, Sarosh C. Havewala
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Publication number: 20140351299Abstract: An extensible file system format for portable storage media is provided. The extensible file system format includes the specification of primary and secondary directory entry types that may be custom defined. The primary and secondary directory entry types can be further classified as critical and benign directory entries. The directory entry types can define whether a cluster chain corresponding to a file can be contiguously allocated.Type: ApplicationFiled: August 11, 2014Publication date: November 27, 2014Inventors: Ravisankar V. Pudipeddi, Vishal V. Ghotge, Sarosh C. Havewala, Ravinder S. Thind, Mark J. Zbikowski, David A. Goebel
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Patent number: 8856088Abstract: In accordance with one or more aspects of the application-managed file versioning, a request to store a new version of a file is received from an application, the request having been generated by the application. A filename for the new version of the file is generated, derived from a standardized naming convention. The filename includes a first portion having at least a portion of a name of the file, and a second portion having data indicating that the new version of the file is a version of the file. A set of application programming interfaces (APIs) can be exposed that allow the application to manage file versions, such as creating a new version of a file, identifying one or more versions of the file, listing one or more versions of the file, and deleting one or more versions of the file.Type: GrantFiled: April 1, 2008Date of Patent: October 7, 2014Assignee: Microsoft CorporationInventors: Sarosh C. Havewala, Matthew S. Garson, Neal R. Christiansen, Hui Li
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Patent number: 8805780Abstract: An extensible file system format for portable storage media is provided. The extensible file system format includes the specification of primary and secondary directory entry types that may be custom defined. The primary and secondary directory entry types can be further classified as critical and benign directory entries. The directory entry types can define whether a cluster chain corresponding to a file can be contiguously allocated.Type: GrantFiled: May 24, 2013Date of Patent: August 12, 2014Assignee: Microsoft CorporationInventors: Ravisankar V. Pudipeddi, Vishal V. Ghotge, Sarosh C. Havewala, Ravinder S. Thind, Mark J. Zbikowski, David A. Goebel
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Patent number: 8725772Abstract: An extensible file system format for portable storage media is provided. The extensible file system format includes the specification of primary and secondary directory entry types that may be custom defined. The primary and secondary directory entry types can be further classified as critical and benign directory entries. The directory entry types can define whether a cluster chain corresponding to a file can be contiguously allocated.Type: GrantFiled: May 2, 2013Date of Patent: May 13, 2014Assignee: Microsoft CorporationInventors: Ravisankar V. Pudipeddi, Vishal V. Ghotge, Sarosh C. Havewala, Ravinder S. Thind, Mark J. Zbikowski, David A. Goebel
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Patent number: 8713270Abstract: Volumes of a file system remain online, and thus available for use, while being proactively error scanned for corruptions thereon. A snapshot of each volume being proactively error scanned is maintained for the volume during the proactive error scanner processing of the volume. Proactive error scanner processing only requires access to file system metadata to correctly process a volume for an identification of the corruptions thereon, and thus, a snapshot of the entire volume nerd not be generated nor maintained. The clusters of a volume that store file system metadata are identified and only these clusters are maintained in a scoped snapshot for the volume during proactive error scanning of the volume.Type: GrantFiled: September 21, 2011Date of Patent: April 29, 2014Assignee: Microsoft CorporationInventors: Sarosh C. Havewala, Neal R. Christiansen, Lane Haury
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Publication number: 20140067885Abstract: An extensible file system format for portable storage media is provided. The extensible file system format includes the specification of primary and secondary directory entry types that may be custom defined. The primary and secondary directory entry types can be further classified as critical and benign directory entries.Type: ApplicationFiled: November 8, 2013Publication date: March 6, 2014Applicant: MICROSOFT CORPORATIONInventors: RAVISANKAR V PUDIPEDDI, VISHAL V. GHOTGE, SAROSH C. HAVEWALA, RAVINDER S. THIND, MARK J. ZBIKOWSKI
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Patent number: 8667323Abstract: Processing for file system volume error detection and processing for resultant error correction are separated to support system availability and user satisfaction. File system volumes for storing data structures are proactively scanned while the volumes remain online to search for errors or corruptions thereon. Found errors are scheduled to be corrected, i.e., spot corrected, dependent on the severity of the identified errors, error correction scheduling and/or at the determination of a file system administrator and/or user, to assist in maintaining minimal user and file system impact. When spot correction is initialized, one file system volume at a time is taken offline for correction. Spot correction verifies prior logged corruptions for the offline volume, and if independently verified, attempts to correct the prior noted corruptions. Volumes are retained offline only for the time necessary to verify and attempt to correct prior noted volume corruptions.Type: GrantFiled: December 17, 2010Date of Patent: March 4, 2014Assignee: Microsoft CorporationInventors: Sarosh C. Havewala, Neal R. Christiansen, John D. Slingwine, Daniel Chan, Craig A. Barkhouse
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Patent number: 8621276Abstract: Perceived corruptions encountered on file system volumes, and which cannot be initially remedied online, are processed to verify whether they are true, existing volume data structure corruptions or, alternatively, false positives. Upon the verification of one or more of a volume's corruptions, error scanning is performed to check for, and attempt to remedy online, all the existing corruptions on the volume. Subsequent to error scanning processing, if one or more verified corruptions continue to exist on a file system volume, at file system boot up time spot corruption correction is performed to attempt to remedy the existing, verified corruptions on the volume. Spot corruption correction is performed to attempt to correct verified data structure corruptions on a volume of the file system while the volume is maintained offline for the time necessary to attempt to correct its prior identified corruptions.Type: GrantFiled: December 17, 2010Date of Patent: December 31, 2013Assignee: Microsoft CorporationInventors: Sarosh C. Havewala, Neal R. Christiansen, John D. Slingwine, Daniel Chan, Craig A. Barkhouse, Lane Haury, Kiran Kumar G. Bangalore, Thiago Sigrist
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Patent number: 8607099Abstract: Data structure errors, or corruptions, identified during, e.g., normal computing device system processing, file system processing or user access processing, are verified prior to the file system identifying the error for offline correction or notifying the user or system administrator a data structure error exists. Identified data structure corruptions are verified while the file system volumes are maintained online and otherwise accessible to other processing tasks and user access. Verified data structure corruptions are logged for further corrective processing. Data structure corruptions that cannot be verified, i.e., false positives, are not further processed and are not identified to file system administrators or users as corruptions, freeing the file system to concentrate on normal processing and true, verifiable errors.Type: GrantFiled: December 17, 2010Date of Patent: December 10, 2013Assignee: Microsoft CorporationInventors: Sarosh C. Havewala, Neal R. Christiansen, John D. Slingwine, Craig A. Barkhouse, Daniel Chan
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Patent number: 8583708Abstract: An extensible file system format for portable storage media is provided. The extensible file system format includes the specification of primary and secondary directory entry types that may be custom defined. The primary and secondary directory entry types can be further classified as critical and benign directory entries.Type: GrantFiled: March 20, 2008Date of Patent: November 12, 2013Assignee: Microsoft CorporationInventors: Ravisankar V. Pudipeddi, Vishal V. Ghotge, Sarosh C. Havewala
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Publication number: 20130262379Abstract: An extensible file system format for portable storage media is provided. The extensible file system format includes the specification of primary and secondary directory entry types that may be custom defined. The primary and secondary directory entry types can be further classified as critical and benign directory entries. The directory entry types can define whether a cluster chain corresponding to a file can be contiguously allocated.Type: ApplicationFiled: May 24, 2013Publication date: October 3, 2013Applicant: Microsoft CorporationInventors: Ravisankar V. Pudipeddi, Vishal V. Ghotge, Sarosh C. Havewala, Ravinder S. Thind, Mark J. Zbikowski, David A. Goebel
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Publication number: 20130246486Abstract: An extensible file system format for portable storage media is provided. The extensible file system format includes the specification of primary and secondary directory entry types that may be custom defined. The primary and secondary directory entry types can be further classified as critical and benign directory entries. The directory entry types can define whether a cluster chain corresponding to a file can be contiguously allocated.Type: ApplicationFiled: May 2, 2013Publication date: September 19, 2013Applicant: Microsoft CorporationInventors: Ravisankar V. Pudipeddi, Vishal V. Ghotge, Sarosh C. Havewala, Ravinder S. Thind, Mark J. Zbikowski, David A. Goebel
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Patent number: 8452729Abstract: An extensible file system format for portable storage media is provided. The extensible file system format includes the specification of primary and secondary directory entry types that may be custom defined. The primary and secondary directory entry types can be further classified as critical and benign directory entries. The directory entry types can define whether a cluster chain corresponding to a file can be contiguously allocated.Type: GrantFiled: January 13, 2011Date of Patent: May 28, 2013Assignee: Microsoft CorporationInventors: Ravisankar V. Pudipeddi, Vishal V. Ghotge, Sarosh C. Havewala, Revinder S. Thind, Mark J. Zbikowski, David A. Goebel
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Patent number: 8433677Abstract: An extensible file system format for portable storage media is provided. The extensible file system format includes the specification of primary and secondary directory entry types that may be custom defined. The primary and secondary directory entry types can be further classified as critical and benign directory entries. The directory entry types can define whether a cluster chain corresponding to a file can be contiguously allocated.Type: GrantFiled: June 16, 2011Date of Patent: April 30, 2013Assignee: Microsoft CorporationInventors: Ravisankar V. Pudipeddi, Vishal V. Ghotge, Sarosh C. Havewala, Ravinder S. Thind, Mark J. Zbikowski, David Goebel
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Publication number: 20130073819Abstract: Volumes of a file system remain online, and thus available for use, while being proactively error scanned for corruptions thereon. A snapshot of each volume being proactively error scanned is maintained for the volume during the proactive error scanner processing of the volume. Proactive error scanner processing only requires access to tile system metadata to correctly process a volume for an identification of the corruptions thereon, and thus, a snapshot of the entire volume nerd not be generated nor maintained. The clusters of a volume that store file system metadata are identified and only these clusters are maintained in a scoped snapshot for the volume during proactive error scanning of the volume.Type: ApplicationFiled: September 21, 2011Publication date: March 21, 2013Applicant: Microsoft CorporationInventors: Sarosh C. Havewala, Neal R. Christiansen, Lane Haury
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Patent number: 8364732Abstract: An extensible file system format for portable storage media is provided. The extensible file system format includes the specification of primary and secondary directory entry types that may be custom defined. The primary and secondary directory entry types can be further classified as critical and benign directory entries. The directory entry types can define whether a cluster chain corresponding to a file can be contiguously allocated.Type: GrantFiled: January 13, 2011Date of Patent: January 29, 2013Assignee: Microsoft CorporationInventors: Ravisankar V. Pudipeddi, Vishal V. Ghotge, Sarosh C. Havewala, Revinder S. Thind, Mark J. Zbikowski, David A. Goebel