The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 07, 2010
Filed:
Nov. 12, 2008
William Todd Boyd, Poughkeepsie, NY (US);
John Lewis Hufferd, San Jose, CA (US);
Agustin Mena, Iii, Austin, TX (US);
Renato John Recio, Austin, TX (US);
Madeline Vega, Austin, TX (US);
William Todd Boyd, Poughkeepsie, NY (US);
John Lewis Hufferd, San Jose, CA (US);
Agustin Mena, III, Austin, TX (US);
Renato John Recio, Austin, TX (US);
Madeline Vega, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
The present invention provides mechanisms that enable 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. In one aspect of the present invention, 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.