Method and system for managing meta data

Electrical computers and digital processing systems: memory – Storage accessing and control – Hierarchical memories

Reexamination Certificate

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Details

C711S152000, C711S151000, C711S170000

Reexamination Certificate

active

06981102

ABSTRACT:
Disclosed is a method, system, and article of manufacture for managing meta data. The meta data provides information on data maintained in a storage device. The system receives a request for meta data from a process and determines whether the requested meta data is in cache. After determining that the requested meta data is not in cache, the system determines whether there are a sufficient number of allocatable segments in cache to stage in the meta data and allocates segments in cache to store the meta data after determining that there are enough allocatable segments in cache. The system stages the requested meta data into the allocated segments. Alternatively, after determining that the requested meta data is in cache, the system determines whether a second process has exclusive access to the meta data in cache. After determining that the second process does not have exclusive access, the system indicates to the first process that access to the meta data is permitted. Otherwise, after determining that the second process has exclusive access, the system notifies the first process that access to the meta data track will be provided at a later time when the second process relinquishes exclusive access.

REFERENCES:
patent: 4888681 (1989-12-01), Barnes et al.
patent: 4987533 (1991-01-01), Clark et al.
patent: 5237682 (1993-08-01), Bendert et al.
patent: 5448719 (1995-09-01), Schultz et al.
patent: 5452444 (1995-09-01), Solomon et al.
patent: 5488731 (1996-01-01), Mendelsohn
patent: 5524203 (1996-06-01), Abe
patent: 5533190 (1996-07-01), Binford et al.
patent: 5572660 (1996-11-01), Jones
patent: 5594836 (1997-01-01), Ryu et al.
patent: 5636359 (1997-06-01), Beardsley et al.
patent: 5644766 (1997-07-01), Coy et al.
patent: 5675781 (1997-10-01), Duncan et al.
patent: 5748874 (1998-05-01), Hicksted et al.
patent: 5787243 (1998-07-01), Stiffler
patent: 5835955 (1998-11-01), Dornier et al.
patent: 5884098 (1999-03-01), Mason, Jr.
patent: 5889934 (1999-03-01), Peterson
patent: 6065102 (2000-05-01), Peters et al.
patent: 6128627 (2000-10-01), Mattis et al.
patent: 6219693 (2001-04-01), Napolitano et al.
patent: 6298425 (2001-10-01), Whitaker et al.
patent: 7073085 (1995-03-01), None
patent: 9321579 (1993-10-01), None
Ng et al., Uniform Parity Group Distribution in Disk Arrays with Multiple Failures, IEEE transactions on Computers, vol. 43, No. 4, Apr., 1994.
IBM Technical Disclosure Bulletin; Destage Algorithm Transitions with Redundant Arrays of Independent Disks; vol. 38, No. 10, Oct. 1995.
Research Disclosure; Non-Retentive Data Identifier (NRDID); Feb. 1989, No. 298.
U.S. Appl. No. 09/261,824 filed Mar. 3, 1999 (18.40).
U.S. Appl. No. 09/261,898 filed Mar. 3, 1999 (18.46).

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