Joon Chang

Person

Austin, TX, US

People

Patents Grantslast 30 patents

Information Patent Grant
File cloning across different filesets
- Patent number 9,020,899
- Issue date Apr 28, 2015
- International Business Machines Corporation
- Janet E. Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
In-flight block map for a clustered redirect-on-write filesystem
- Patent number 8,959,227
- Issue date Feb 17, 2015
- International Business Machines Corporation
- Joon Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
In-flight block map for a clustered redirect-on-write filesystem
- Patent number 8,904,006
- Issue date Dec 2, 2014
- International Business Machines Corporation
- Joon Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Delayed deletion of extended attributes
- Patent number 8,799,333
- Issue date Aug 5, 2014
- International Business Machines Corporation
- Joon Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
File cloning across different filesets
- Patent number 8,666,943
- Issue date Mar 4, 2014
- International Business Machines Corporation
- Janet E. Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
File cloning across different filesets
- Patent number 8,650,158
- Issue date Feb 11, 2014
- International Business Machines Corporation
- Janet E. Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Multiple contexts in a redirect on write file system
- Patent number 8,626,713
- Issue date Jan 7, 2014
- International Business Machines Corporation
- Janet E. Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Using a sparse file as a clone of a file
- Patent number 8,521,690
- Issue date Aug 27, 2013
- International Business Machines Corporation
- Janet E. Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Distributed file hierarchy management in a clustered redirect-on-wr...
- Patent number 8,495,112
- Issue date Jul 23, 2013
- International Business Machines Corporation
- Janet E. Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Distributed free block map for a clustered redirect-on-write file s...
- Patent number 8,458,181
- Issue date Jun 4, 2013
- International Business Machines Corporation
- Janet E. Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Inode management in redirect-on-write file system
- Patent number 8,396,833
- Issue date Mar 12, 2013
- International Business Machines Corporation
- Joon Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Independent fileset generations in a clustered redirect-on-write fi...
- Patent number 8,396,832
- Issue date Mar 12, 2013
- International Business Machines Corporation
- Janet E. Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Managing data access requests after persistent snapshots
- Patent number 8,306,950
- Issue date Nov 6, 2012
- International Business Machines Corporation
- Janet E. Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Using a sparse file as a clone of a file
- Patent number 8,195,611
- Issue date Jun 5, 2012
- International Business Machines Corporation
- Janet E. Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and system for handling reallocated blocks in a file system
- Patent number 8,190,657
- Issue date May 29, 2012
- International Business Machines Corporation
- Janet E. Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Handling temporary files in a file system with snapshots
- Patent number 7,958,325
- Issue date Jun 7, 2011
- International Business Machines Corporation
- Janet Elizabeth Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Managing a snapshot stored within a file system space for efficient...
- Patent number 7,921,081
- Issue date Apr 5, 2011
- International Business Machines Corporation
- Janet E. Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and apparatus to perform incremental truncates in a file system
- Patent number 7,805,471
- Issue date Sep 28, 2010
- International Business Machines, Corporation
- Shashidhar Bomma
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Delayed deletion of extended attributes
- Patent number 7,778,961
- Issue date Aug 17, 2010
- International Business Machines Corporation
- Joon Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and system for handling reallocated blocks in a file system
- Patent number 7,702,662
- Issue date Apr 20, 2010
- International Business Machines Corporation
- Janet Elizabeth Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
System and method for handing input/output errors during recovery o...
- Patent number 7,472,138
- Issue date Dec 30, 2008
- International Business Machines Corporation
- Janet Elizabeth Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and apparatus for file system snapshot persistence
- Patent number 7,440,966
- Issue date Oct 21, 2008
- International Business Machines Corporation
- Janet Elizabeth Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Delayed deletion of extended attributes
- Patent number 7,340,487
- Issue date Mar 4, 2008
- International Business Machines Corporation
- Joon Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Apparatus, system, and method for differential backup using snapsho...
- Patent number 7,284,019
- Issue date Oct 16, 2007
- International Business Machines Corporation
- Janet Elizabeth Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Apparatus and method for distribution of work on a doubly linked li...
- Patent number 7,213,244
- Issue date May 1, 2007
- International Business Machines Corporation
- Joon Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method, apparatus, and program product for facilitating serializati...
- Patent number 7,200,686
- Issue date Apr 3, 2007
- International Business Machines Corporation
- Joon Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
System and method for managing file system extended attributes
- Patent number 6,850,929
- Issue date Feb 1, 2005
- International Business Machines Corporation
- Joon Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
System and method for file system cooperation in a multi-threaded e...
- Patent number 6,768,993
- Issue date Jul 27, 2004
- International Business Machines Corporation
- Joon Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
System and method for ghost offset utilization in sequential byte s...
- Patent number 6,732,248
- Issue date May 4, 2004
- International Business Machines, Corporation
- Joon Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Implementation for efficient access of extended attribute data
- Patent number 6,625,614
- Issue date Sep 23, 2003
- International Business Machines Corporation
- Joon Chang
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
FILE CLONING ACROSS DIFFERENT FILESETS
- Publication number 20140156602
- Publication date Jun 5, 2014
- International Business Machines Corporation
- Janet E. Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
DISTRIBUTED FILE HIERARCHY MANAGEMENT IN A CLUSTERED REDIRECT-ON-WR...
- Publication number 20130318086
- Publication date Nov 28, 2013
- International Business Machines Corporation
- Janet E. Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
MANAGING DATA ACCESS REQUESTS AFTER PERSISTENT SNAPSHOTS
- Publication number 20130031058
- Publication date Jan 31, 2013
- International Business Machines Corporation
- Janet E. Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
IN-FLIGHT BLOCK MAP FOR A CLUSTERED REDIRECT-ON-WRITE FILESYSTEM
- Publication number 20120216074
- Publication date Aug 23, 2012
- International Business Machines Corporation
- Joon Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
FILE CLONING ACROSS DIFFERENT FILESETS
- Publication number 20120209813
- Publication date Aug 16, 2012
- International Business Machines Corporation
- Janet E. Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Using a Sparse File as a Clone of a File
- Publication number 20120209810
- Publication date Aug 16, 2012
- International Business Machines Corporation
- Janet E. Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
INDEPENDENT FILESET GENERATIONS IN A CLUSTERED REDIRECT-ON-WRITE FI...
- Publication number 20120150800
- Publication date Jun 14, 2012
- International Business Machines Corporation
- Janet E. Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
IN-FLIGHT BLOCK MAP FOR A CLUSTERED REDIRECT-ON-WRITE FILESYSTEM
- Publication number 20120151245
- Publication date Jun 14, 2012
- International Business Machines Corporation
- Joon Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
DISTRIBUTED FREE BLOCK MAP FOR A CLUSTERED REDIRECT-ON-WRITE FILE S...
- Publication number 20120150926
- Publication date Jun 14, 2012
- International Business Machines Corporation
- Janet E. Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
MULTIPLE CONTEXTS IN A REDIRECT ON WRITE FILE SYSTEM
- Publication number 20120150804
- Publication date Jun 14, 2012
- International Business Machines Corporation
- Janet E. Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
FILE CLONING ACROSS DIFFERENT FILESETS
- Publication number 20120066183
- Publication date Mar 15, 2012
- International Business Machines Corporation
- Janet E. Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
INODE MANAGEMENT IN REDIRECT-ON-WRITE FILE SYSTEM
- Publication number 20120066182
- Publication date Mar 15, 2012
- International Business Machines Corporation
- Joon Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
DISTRIBUTED FILE HIERARCHY MANAGEMENT IN A CLUSTERED REDIRECT-ON-WR...
- Publication number 20120066278
- Publication date Mar 15, 2012
- International Business Machines Corporation
- Janet E. Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
OPTIMIZED CONCURRENT FILE INPUT/OUTPUT IN A CLUSTERED FILE SYSTEM
- Publication number 20120066191
- Publication date Mar 15, 2012
- International Business Machines Corporation
- Joon Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
MANAGING DATA ACCESS REQUESTS AFTER PERSISTENT SNAPSHOTS
- Publication number 20120054152
- Publication date Mar 1, 2012
- International Business Machines Corporation
- Janet E. Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Managing Copies of Data Structures in File Systems
- Publication number 20120005162
- Publication date Jan 5, 2012
- International Business Machines Corporation
- Janet E. Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
USING A SPARSE FILE AS A CLONE OF A FILE
- Publication number 20100250493
- Publication date Sep 30, 2010
- International Business Machines Corporation
- Janet E. Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Method and System for Handling Reallocated Blocks in a File System
- Publication number 20100011035
- Publication date Jan 14, 2010
- International Business Machines Corporation
- Janet Elizabeth Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
METHOD AND APPARATUS TO PERFORM INCREMENTAL TRUNCATES IN A FILE SYSTEM
- Publication number 20090182792
- Publication date Jul 16, 2009
- Shashidhar Bomma
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
HANDLING TEMPORARY FILES IN A FILE SYSTEM WITH SNAPSHOTS
- Publication number 20090070535
- Publication date Mar 12, 2009
- JANET ELIZABETH ADKINS
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
MANAGING A SNAPSHOT STORED WITHIN A FILE SYSTEM SPACE FOR EFFICIENT...
- Publication number 20080301203
- Publication date Dec 4, 2008
- Janet E. Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
METHOD AND SYSTEM FOR HANDLING REALLOCATED BLOCKS IN A FILE SYSTEM
- Publication number 20080288546
- Publication date Nov 20, 2008
- JANET ELIZABETH ADKINS
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Delayed Deletion of Extended Attributes
- Publication number 20080104129
- Publication date May 1, 2008
- International Business Machines Corporation
- Joon Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Delayed Deletion Of Extended Attributes
- Publication number 20070288527
- Publication date Dec 13, 2007
- Joon Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
System and method for recovering data from a file system
- Publication number 20060129611
- Publication date Jun 15, 2006
- International Business Machines Corporation
- Janet Elizabeth Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Apparatus, system, and method for differential backup using snapsho...
- Publication number 20060041727
- Publication date Feb 23, 2006
- Janet Elizabeth Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Method and apparatus for file system snapshot persistence
- Publication number 20050182797
- Publication date Aug 18, 2005
- International Business Machines Corporation
- Janet Elizabeth Adkins
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Method and apparatus for ensuring valid journaled file system metad...
- Publication number 20050081099
- Publication date Apr 14, 2005
- International Business Machines Corporation
- Joon Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
System and method for managing file system extended attributes
- Publication number 20050055360
- Publication date Mar 10, 2005
- Joon Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Method and apparatus for a multiple concurrent writer file system
- Publication number 20050039049
- Publication date Feb 17, 2005
- International Business Machines Corporation
- Joon Chang
- G06 - COMPUTING CALCULATING COUNTING

Person

Patents Grantslast 30 patents

File cloning across different filesets

In-flight block map for a clustered redirect-on-write filesystem

In-flight block map for a clustered redirect-on-write filesystem

Delayed deletion of extended attributes

File cloning across different filesets

File cloning across different filesets

Multiple contexts in a redirect on write file system

Using a sparse file as a clone of a file

Distributed file hierarchy management in a clustered redirect-on-wr...

Distributed free block map for a clustered redirect-on-write file s...

Inode management in redirect-on-write file system

Independent fileset generations in a clustered redirect-on-write fi...

Managing data access requests after persistent snapshots

Using a sparse file as a clone of a file

Method and system for handling reallocated blocks in a file system

Handling temporary files in a file system with snapshots

Managing a snapshot stored within a file system space for efficient...

Method and apparatus to perform incremental truncates in a file system

Delayed deletion of extended attributes

Method and system for handling reallocated blocks in a file system

System and method for handing input/output errors during recovery o...

Method and apparatus for file system snapshot persistence

Delayed deletion of extended attributes

Apparatus, system, and method for differential backup using snapsho...

Apparatus and method for distribution of work on a doubly linked li...

Method, apparatus, and program product for facilitating serializati...

System and method for managing file system extended attributes

System and method for file system cooperation in a multi-threaded e...

System and method for ghost offset utilization in sequential byte s...

Implementation for efficient access of extended attribute data

Patents Applicationslast 30 patents

FILE CLONING ACROSS DIFFERENT FILESETS

DISTRIBUTED FILE HIERARCHY MANAGEMENT IN A CLUSTERED REDIRECT-ON-WR...

MANAGING DATA ACCESS REQUESTS AFTER PERSISTENT SNAPSHOTS

IN-FLIGHT BLOCK MAP FOR A CLUSTERED REDIRECT-ON-WRITE FILESYSTEM

FILE CLONING ACROSS DIFFERENT FILESETS

Using a Sparse File as a Clone of a File

INDEPENDENT FILESET GENERATIONS IN A CLUSTERED REDIRECT-ON-WRITE FI...

IN-FLIGHT BLOCK MAP FOR A CLUSTERED REDIRECT-ON-WRITE FILESYSTEM

DISTRIBUTED FREE BLOCK MAP FOR A CLUSTERED REDIRECT-ON-WRITE FILE S...

MULTIPLE CONTEXTS IN A REDIRECT ON WRITE FILE SYSTEM

FILE CLONING ACROSS DIFFERENT FILESETS

INODE MANAGEMENT IN REDIRECT-ON-WRITE FILE SYSTEM

DISTRIBUTED FILE HIERARCHY MANAGEMENT IN A CLUSTERED REDIRECT-ON-WR...

OPTIMIZED CONCURRENT FILE INPUT/OUTPUT IN A CLUSTERED FILE SYSTEM

MANAGING DATA ACCESS REQUESTS AFTER PERSISTENT SNAPSHOTS

Managing Copies of Data Structures in File Systems

USING A SPARSE FILE AS A CLONE OF A FILE

Method and System for Handling Reallocated Blocks in a File System

METHOD AND APPARATUS TO PERFORM INCREMENTAL TRUNCATES IN A FILE SYSTEM

HANDLING TEMPORARY FILES IN A FILE SYSTEM WITH SNAPSHOTS

MANAGING A SNAPSHOT STORED WITHIN A FILE SYSTEM SPACE FOR EFFICIENT...

METHOD AND SYSTEM FOR HANDLING REALLOCATED BLOCKS IN A FILE SYSTEM

Delayed Deletion of Extended Attributes

Delayed Deletion Of Extended Attributes

System and method for recovering data from a file system

Apparatus, system, and method for differential backup using snapsho...

Method and apparatus for file system snapshot persistence

Method and apparatus for ensuring valid journaled file system metad...

System and method for managing file system extended attributes

Method and apparatus for a multiple concurrent writer file system