Electrical computers and digital data processing systems: input/ – Input/output data processing – Input/output addressing
Reexamination Certificate
2005-05-23
2008-12-09
Dollinger, Tonia L. M. (Department: 2182)
Electrical computers and digital data processing systems: input/
Input/output data processing
Input/output addressing
C710S022000, C707S793000
Reexamination Certificate
active
07464189
ABSTRACT:
A method that enables application instances to pass block mode storage requests directly to a physical I/O adapter without run-time involvement from the local operating system or hypervisor is provided. In one aspect of the method, a mechanism is provided for handling user space creation and deletion operations for creating and deleting allocations of linear block addresses of a physical storage device to application instances. For creation, it is determined if there are sufficient available resources for creation of the allocation. For deletion, it is determined if there are any I/O transactions active on the allocation before performing the deletion. Allocation may be performed only if there are sufficient available resources and deletion may be performed only if there are no active I/O transactions on the allocation being deleted.
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Boyd William Todd
Hufferd John Lewis
Mena III Agustin
Recio Renato John
Vega Madeline
Dews Brooke J
Dollinger Tonia L. M.
International Business Machines - Corporation
Salys Casimer K.
Walder, Jr. Stephen J.
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