发明名称 |
Storage apparatus and method for executing exclusive extent processing in parallel using counter values |
摘要 |
A storage apparatus includes a microprocessor package configured to access a logical volume and a local memory in the microprocessor package. An input/output (I/O) request range of one I/O request, including a start position address and an end position address of the logical volume which is a target of the one I/O request, is stored in the local memory. A counter value indicating a number of I/O requests to and from the logical volume associated with the one I/O request is acquired and stored in the local memory. If the counter value associated with the one I/O request is greater than the counter value associated with another I/O request, the I/O request ranges of the one I/O request and the other I/O request are compared. If there is no overlap between the I/O request ranges, the one I/O request is executed; otherwise, the one I/O request is placed on standby. |
申请公布号 |
US8719496(B2) |
申请公布日期 |
2014.05.06 |
申请号 |
US20100922574 |
申请日期 |
2010.09.02 |
申请人 |
SANO TAKUMI;KUROKAWA ISAMU;MORI AKIHIRO;OGATA RAN;GOTO YUYA;HITACHI, LTD. |
发明人 |
SANO TAKUMI;KUROKAWA ISAMU;MORI AKIHIRO;OGATA RAN;GOTO YUYA |
分类号 |
G06F12/00;G06F3/06;G06F13/14 |
主分类号 |
G06F12/00 |
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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