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    • 1. 发明授权
    • Providing an administrative path for accessing a writeable master storage volume in a mirrored storage environment
    • 提供用于访问镜像存储环境中的可写主存储卷的管理路径
    • US08429368B2
    • 2013-04-23
    • US12129904
    • 2008-05-30
    • Michael EislerPeter F. CorbettMichael L. KazarDaniel S. NydickJ. Christopher Wagner
    • Michael EislerPeter F. CorbettMichael L. KazarDaniel S. NydickJ. Christopher Wagner
    • G06F12/00
    • G06F11/2094
    • A technique provides an administrative path for accessing a writeable master storage volume in a mirrored storage environment. Illustratively, a writeable master storage volume stores a master set of data addressable by a corresponding pathname, and zero or more read-only (e.g., load-balancing) mirrored storage volumes are configured to store a mirrored set of the master set of data, the mirrored set also addressable by the corresponding pathname. Clients may read data from either the master storage volume or one of the mirrored storage volumes (e.g., according to a configured access location, such as a local mirrored volume if one exists) by issuing read requests having the corresponding pathnames. Also, each client may specifically access the master set of data from the master storage volume by issuing an access (e.g., read/write) request having a specified master storage volume pathname prefix prepended to the corresponding pathname.
    • 技术提供了访问镜像存储环境中的可写主存储卷的管理路径。 说明性地,可写主存储卷存储可由对应的路径名寻址的主数据集,并且零个或多个只读(例如,负载平衡)镜像存储卷被配置为存储主组数据的镜像集合, 镜像集也可由相应的路径名寻址。 客户端可以通过发出具有相应路径名的读取请求来从主存储卷或其中一个镜像存储卷读取数据(例如,根据配置的访问位置,例如本地镜像卷,如果存在的话)。 此外,每个客户端可以通过发布具有指定的主存储卷路径名前缀的访问(例如,读/写)请求,从而从主存储卷特别地访问主组数据。
    • 3. 发明授权
    • Lightweight coherency control protocol for clustered storage system
    • 集群存储系统的轻量级一致性控制协议
    • US07934060B1
    • 2011-04-26
    • US12121407
    • 2008-05-15
    • Peter F. CorbettChristopher Wagner
    • Peter F. CorbettChristopher Wagner
    • G06F12/00
    • G06F12/0815G06F12/0866G06F2212/263G06F2212/284
    • A lightweight coherency control protocol ensures consistency of data containers, such as a file, and associated data buffers stored on one or more volumes served by a plurality of nodes, e.g., storage systems, connected as a cluster. Each data buffer is associated with a current cache sequence number comprising a load generation value and an update count value. The load generation value is incremented every time an inode of a file is loaded into a memory of the storage system. Once the inode is loaded and its load generation value is set, then the appropriate buffer of a buffer tree for the file is loaded into the memory. The update count value is incremented each time the buffer is updated with a write request/operation. Therefore, each buffer loaded into memory is tagged with the load generation value and an update count from the time that buffer is loaded.
    • 轻量级一致性控制协议确保数据容器(例如文件)和存储在由作为集群连接的多个节点(例如存储系统)所服务的一个或多个卷上的相关联的数据缓冲器的一致性。 每个数据缓冲器与包括负载生成值和更新计数值的当前高速缓存序列号相关联。 每当将文件的inode加载到存储系统的存储器中时,负载生成值将增加。 一旦加载了inode并且设置了其负载生成值,则将该文件的缓冲树的适当缓冲区加载到内存中。 每次使用写入请求/操作更新缓冲区时,更新计数值都会递增。 因此,加载到内存中的每个缓冲区都会被加载负载生成值和缓冲区加载时的更新计数。