Dynamic and variable length extents

Details Dynamic and variable length extents Dynamic and variable length extents

2005-10-25

2005-10-25

Vital, Pierre M. (Department: 2188)

Electrical computers and digital processing systems: memory

Address formation

Address mapping

C711S152000, C711S163000

Reexamination Certificate

active

06959373

ABSTRACT:
Described are techniques used in a computer system for handling data operations to storage devices. A switching fabric includes one or more fast paths for handling lightweight, common data operations and at least one control path for handling other data operations. A control path manages one or more fast paths. The fast path and the control path are utilized in mapping virtual to physical addresses using mapping tables. The mapping tables include an extent table of one or more entries corresponding to varying address ranges. The size of an extent may be changed dynamically in accordance with a corresponding state change of physical storage. The fast path may cache only portions of the extent table as needed in accordance with a caching technique. The fast path may cache a subset of the extent table stored within the control path. A set of primitives may be used in performing data operations. A locking mechanism is described for controlling access to data shared by the control paths.

REFERENCES:
patent: 5430855 (1995-07-01), Walsh et al.
patent: 5497469 (1996-03-01), Sakata et al.
patent: 5566331 (1996-10-01), Irwin, Jr. et al.
patent: 5634028 (1997-05-01), Brady et al.
patent: 5712976 (1998-01-01), Falcon, Jr. et al.
patent: 6584474 (2003-06-01), Pereira
patent: 6629202 (2003-09-01), Cabrera et al.
patent: 6718436 (2004-04-01), Kim et al.
patent: 2001/0023463 (2001-09-01), Yamamoto et al.
patent: 2001/0049779 (2001-12-01), Shimada et al.
patent: 1 117 028 (2001-07-01), None
patent: 2 357 171 (2001-06-01), None
patent: WO 01/33361 (2001-05-01), None
http://www.software.hp.com/cgi-bin/swdepot_parser.cgi/cgi/displayProductInfo.pl?productNumber=Judy, Software Depot, Judy Libraries, 2 pgs.
http://www.cs.tcd.ie/Fergal.Shevlin/courses/cs2/Java/trans/Tries.pdf, TRIES, pp. 1-11.
http://www.cise.ufl.edu/˜sahni/dsaaj/enrich/c16/tries.htm, Data Structures, Algorithms, & Applications in Java, TRIES, 1999, pp. 1-21.
Aho, et al., “Data Structures and Algorithms”, pp. 163-169, Addison-Wesley, 1983.

Affiliated with

Also associated with

Rating

Dynamic and variable length extents does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dynamic and variable length extents, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamic and variable length extents will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3445651