Maintaining cache integrity by recording write addresses in...

Details Maintaining cache integrity by recording write addresses in... Maintaining cache integrity by recording write addresses in...

2007-11-20

2007-11-20

Peikari, B. James (Department: 2189)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S005110, C710S260000, C710S262000, C711S113000, C711S112000

Reexamination Certificate

active

10607772

ABSTRACT:
An apparatus, as well as systems, methods, and articles can operate to record the address of write operations to a memory cached by a non-volatile cache prior to executing an operating system cache driver. In an embodiment, a non-volatile cache may be implemented by creating a device option read only memory (ROM), or modifying the associated computer basic input-output system (BIOS) to trap software interrupts associated with disk and other media access requests. Associated addresses, such as logical block addresses, can be stored in a log for data that is modified. The resulting log can be stored in a non-volatile medium, including the cache itself. If the available log space is not large enough to record all write activity prior to loading operating system drivers, a flag may be set to indicate the overrun condition.

REFERENCES:
patent: 5359713 (1994-10-01), Moran et al.
patent: 5603331 (1997-02-01), Heemels et al.
patent: 5732238 (1998-03-01), Sarkozy
patent: 5937433 (1999-08-01), Lee et al.
patent: 6446141 (2002-09-01), Nolan et al.
patent: 6629198 (2003-09-01), Howard et al.
patent: 6640278 (2003-10-01), Nolan et al.
Handy, Jim, the Cache Memory book, 1998, Academic Press, 2ndEdition, p. xv.
Kozierok, Charles, PC Guide—Logical Block Addressing, Apr. 17, 2001, http://www.pcguide.com/ref/hdd/bios/modesLBA-c.html.
Kozierok, Charles, PC Guide—BIOS Functions and Operation, Apr. 17, 2001, http://www.pcguide.com/ref/mbsys/bios/func.htm.

Affiliated with

Also associated with

Rating

Maintaining cache integrity by recording write addresses in... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Maintaining cache integrity by recording write addresses in..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Maintaining cache integrity by recording write addresses in... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3832213