发明名称 REDUCTION OF I/O LATENCY FOR WRITABLE COPY-ON-WRITE SNAPSHOT FUNCTION
摘要 According to one aspect of the invention, a method of controlling a storage system comprises storing data in a first volume in the storage system which has volumes including the first volume and a plurality of second volumes; prohibiting write I/O (input/output) access against the first volume after storing the data in the first volume; performing subsequent write requests received by the storage system against the second volumes in the storage system after storing the data in the first volume, each write request having a target volume which is one of the second volumes; and in response to each one write request of the write requests, determining whether the target volume of the one write request is write prohibited or not, and performing the one write request only if the target volume is not write prohibited.
申请公布号 US2011208909(A1) 申请公布日期 2011.08.25
申请号 US20100711643 申请日期 2010.02.24
申请人 HITACHI, LTD. 发明人 KAWAGUCHI TOMOHIRO
分类号 G06F12/00;G06F12/08;G06F12/16 主分类号 G06F12/00
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