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    • 6. 发明授权
    • Providing and utilizing high performance block storage metadata
    • 提供和利用高性能块存储元数据
    • US08069317B2
    • 2011-11-29
    • US11871532
    • 2007-10-12
    • Kenneth Wayne BoydJeffrey William PalmGeorge Oliver Penokie
    • Kenneth Wayne BoydJeffrey William PalmGeorge Oliver Penokie
    • G06F12/00
    • G06F3/0613G06F3/0619G06F3/064G06F3/0676
    • An enhanced mechanism for the allocation, organization and utilization of high performance block storage metadata provides a stream of data (e.g., in a server system, storage system, DASD, etc.) that includes a sequence of fixed-size blocks which together define a page. Each of the fixed-size blocks includes a data block and a footer. A high performance block storage metadata unit associated with the page is created from a confluence of the footers. Each footer in the confluence of footers has space available for application metadata, which are provided as one or more information units. At least one of the footers includes a Checksum field containing a checksum that covers at least the confluence of footers. This approach is advantageous in that it provides data integrity protection, protects against stale data, and significantly increases the amount of metadata space available for application use.
    • 用于分配,组织和利用高性能块存储元数据的增强机制提供包括一系列固定大小块的数据流(例如,在服务器系统,存储系统,DASD等中),其一起定义 页。 每个固定大小的块包括数据块和页脚。 从页脚的汇合处创建与页面相关联的高性能块存储元数据单元。 页脚汇合中的每个页脚都具有可用于作为一个或多个信息单元提供的应用程序元数据的空间。 至少有一个页脚包括一个校验和字段,其中包含至少覆盖页脚汇合的校验和。 这种方法的优点在于它提供数据完整性保护,防止陈旧的数据,并显着增加可用于应用程序使用的元数据空间的数量。