Method and apparatus for decomposing IO tasks in

专利名称：Method and apparatus for decomposing I/O

tasks in a raid system

发明人：James Leong,Rajesh Sundaram,Douglas P.

Doucette,Scott Schoenthal,Stephen H.Strange,Srinivasan Viswanathan

申请号：US10105078申请日：20020321公开号：US07539991B2公开日：20090526

专利附图：

摘要：The present invention implements an I/O task architecture in which an I/O task

requested by the storage manager, for example a stripe write, is decomposed into anumber of lower-level asynchronous I/O tasks that can be scheduled independently.Resources needed by these lower-level I/O tasks are dynamically assigned, on an as-needed basis, to balance the load and use resources efficiently, achieving higherscalability. A hierarchical order is assigned to the I/O tasks to ensure that there is aforward progression of the higher-level I/O task and to ensure that resources do notbecome deadlocked.

申请人：James Leong,Rajesh Sundaram,Douglas P. Doucette,Scott Schoenthal,StephenH. Strange,Srinivasan Viswanathan

地址：Hillsborough CA US,Mountain View CA US,Freeland WA US,San Ramon CAUS,Mountain View CA US,Fremont CA US

国籍：US,US,US,US,US,US

代理机构：Cesari and McKenna, LLP

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