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Computer program product, method, apparatus and data storage system for controlling write operations in the data storage system
Computer program product, method, apparatus and data storage system for controlling write operations in the data storage system
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机译:用于控制数据存储系统中的写操作的计算机程序产品,方法,装置和数据存储系统
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摘要
The data storage system includes one or more storage apparatuses and a file system server connected to the one or more storage apparatuses and to one or more host computers. Write operations are controlled by providing a free space object which stores a plurality of indicators, each indicator being associated with one of a plurality of storage units for storing data units in the one or more storage apparatuses and each indicator indicating whether the associated storage unit is free or used, executing a read-ahead examination which comprises examining a set of indicators of the free space object for identifying one or more used storage units associated with indicators of the set, in particular for observing a fragmentation status of the storage units associated with the indicators of the set, and executing an allocation examination which comprises examining one or more indicators.
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