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    • 84. 发明授权
    • I/O write request handling in a storage system
    • 存储系统中的I / O写入请求处理
    • US09342460B2
    • 2016-05-17
    • US14132087
    • 2013-12-18
    • International Business Machines Corporation
    • Michael DiederichErik RuegerRainer Wolafka
    • G06F12/08G06F3/06G06F13/12G06F13/38
    • G06F12/0888G06F3/0601G06F3/0607G06F13/122G06F13/124G06F13/385
    • An I/O write request handling mechanism in a storage system comprising at least one normal storage device and at least one cache device is provided. For each received I/O write request, two parallel threads are created. A first thread attempts to execute the write operation using the at least one normal storage device without using the at least one cache device. A second thread monitors the first thread and is triggered to execute the write operation using the at least on cache device if the first thread has not finished the write operation within a given time threshold. In either case, an I/O write completion response is provided to the external device in order to avoid timing out of the write operation. The at least one cache device is freed from data written by the second thread if the first thread completes the write operation after the given time threshold.
    • 提供了包括至少一个正常存储设备和至少一个高速缓存设备的存储系统中的I / O写请求处理机制。 对于每个接收的I / O写请求,创建两个并行线程。 第一线程尝试使用至少一个普通存储设备来执行写入操作而不使用至少一个缓存设备。 如果第一线程在给定的时间阈值内尚未完成写操作,则第二线程监视第一线程并被触发以使用至少在高速缓存设备上执行写操作。 在这两种情况下,为了避免写入操作超时,向外部设备提供I / O写入完成响应。 如果第一线程在给定时间阈值之后完成写入操作,则至少一个缓存设备被从第二线程写入的数据中释放出来。
    • 87. 发明申请
    • Controlling access of clients to service in cluster environment
    • 控制客户端在集群环境中的服务访问
    • US20130212264A1
    • 2013-08-15
    • US13767251
    • 2013-02-14
    • International Business Machines Corporation
    • Ulf TroppensErik RuegerMichael Diederich
    • H04L29/12
    • G06F11/2005H04L29/12207H04L43/0882H04L43/16H04L61/1511H04L61/2061H04L61/2076H04L61/6009H04L69/40
    • First, second, and third sets of addresses are created. The first set includes addresses registered in a name server; both the second and third sets include addresses not registered in the name server and that are disjoint. A first address of a first server that has failed and to which access is to be prohibited is moved from the first to the third set., is removed from the first server, assigned to a second server, and removed from the name server. Usage parameter values of the first address are monitored to determine whether at least one is below a value. If so, the first address is removed from the second server and moved from the third to the second set. Upon access to the first server no longer being prohibited, a second address of the second set is assigned to the first server and added to the name server.
    • 创建第一,第二和第三组地址。 第一组包括在名称服务器中注册的地址; 第二组和第三组都包括未在名称服务器中注册并且不相交的地址。 第一个服务器的第一个地址已经发生故障,并且被禁止的访问从第一个服务器移动到第三个服务器,从第一个服务器移除,分配给第二个服务器,并从名称服务器中删除。 监视第一个地址的使用参数值,以确定是否至少有一个低于值。 如果是这样,第一个地址从第二个服务器被删除,并从第三个设备移动到第二个。 在不再禁止访问第一服务器时,将第二集合的第二地址分配给第一服务器并将其添加到名称服务器。