Electrical computers and digital processing systems: memory – Storage accessing and control – Specific memory composition
Patent
1997-07-14
2000-07-11
Cabeca, John W.
Electrical computers and digital processing systems: memory
Storage accessing and control
Specific memory composition
711170, 711172, 711173, 711 4, G06F 1200
Patent
active
060887648
ABSTRACT:
A method and apparatus for reducing space allocation failures in a computer system that utilizes direct access storage devices to store data. The method comprises the steps of determining if authorization has been given to attempt to allocate an initial space request over more than one volume, and, if so, attempting to allocate space on a plurality of volumes. If the initial space request cannot be allocated on a plurality of volumes, the initial space request is reduced by a preset percentage, the five-extent limit is removed and an attempt is made to allocate the reduced space request on the plurality of volumes with the five extent limit removed. Alternatively, if authorization has not been given to attempt to allocate the initial space request over more than one volume, the initial space request is reduced by a preset percentage, the five-extent limit is removed and an attempt is made to allocate the reduced space request on a single volume.
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Liang Victor
Pizl Gary A.
Shyam Sanjay
Swartz Ray P.
Bataille Pierre M.
Cabeca John W.
International Business Machines - Corporation
Pagel Donald J.
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