发明名称 |
Method for enabling overlapped input/output requests to a logical device using assigned and parallel access unit control blocks |
摘要 |
A method for enabling overlapped input/output requests to a logical device using assigned and parallel access unit control blocks. Each I/O request interrupts an operating system to assign a base and related unit control block to the input/output requests. In addition a parallel access control block is associated with each unit control block for a logical volume and a parallel access main control block is established with a logical volume through which each of the base and related unit control block can be identified. An input/output request to a logical device interrupts the operating system to assign one of the base and one of the assigned unit control blocks to the input/output requests after which control transfers back to the operating system. At a disk storage facility, the input/output request is located in a table with other input/output requests and corresponding parameters. The disk array storage facility tests the parameters for each new input/output request to determine which of a plurality of control functions will be performed.
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申请公布号 |
US6665739(B2) |
申请公布日期 |
2003.12.16 |
申请号 |
US20000731245 |
申请日期 |
2000.12.06 |
申请人 |
EMC CORPORATION |
发明人 |
VISHLITZKY NATAN;LECRONE DOUGLAS E.;SHARON IZHAR;MURPHY DANIEL P.;FAIRCHILD WILLIAM R.;MORESHET HANA;FARLEY MARTIN;PATAPOUTIAN ELIZABETH E. |
分类号 |
G06F3/00;G06F3/06;G06F13/14;(IPC1-7):G06F13/14 |
主分类号 |
G06F3/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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