Bit map write logging with write order preservation in...

Details Bit map write logging with write order preservation in... Bit map write logging with write order preservation in...

2008-01-08

2008-01-08

Le, Dieu-Minh (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S006130

Reexamination Certificate

active

07318168

ABSTRACT:
A method for maintaining a bit map of data writes, the method including associating each of a plurality of bit groups in a bit map with a different one of a plurality of segments of a data storage device, where each of the bit groups includes a plurality of bits, and setting any of the bits in any of the bit groups to indicate that any portion of the segment corresponding to the bit group has been written to, where the write order of any two of the plurality of segments that have been written to is preserved by their corresponding set bit groups.

REFERENCES:
patent: 4426688 (1984-01-01), Moxley
patent: 5357258 (1994-10-01), May
patent: 5448713 (1995-09-01), Hamamoto
patent: 5528732 (1996-06-01), Klotz, Jr.
patent: 5561778 (1996-10-01), Fecteau et al.
patent: 2007/0067556 (2007-03-01), Dixon et al.

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