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    • 9. 发明授权
    • Memory preserved cache failsafe reboot mechanism
    • 内存保存缓存失效安全重启机制
    • US07895465B2
    • 2011-02-22
    • US12132128
    • 2008-06-03
    • Kevin John AshMichael Thomas BenhaseLokesh Mohan GuptaAlfred Emilio SanchezKenneth Wayne Todd
    • Kevin John AshMichael Thomas BenhaseLokesh Mohan GuptaAlfred Emilio SanchezKenneth Wayne Todd
    • G06F11/00
    • G06F11/1417G06F11/2092
    • A method, system and computer program product for preserving data in a storage subsystem having dual cache and dual nonvolatile storage (NVS) through a failover from a failed cluster to a surviving cluster, the surviving cluster undergoing a rebooting process, is provided. A memory preserved indicator associated with a cache of the surviving cluster is detected. The memory preserved indicator designates marked tracks having an image in an NVS of the failed cluster to be preserved through the rebooting process. A counter in a data structure of the surviving cache is incremented. If a value of the counter exceeds a predetermined value, a cache memory is initialized, and the marked tracks are removed from the cache to prevent an instance of repetitive reboots caused by a corrupted structure in the cache memory.
    • 提供了一种方法,系统和计算机程序产品,用于通过从故障集群到存活集群的故障转移来保存具有双高速缓存和双非易失性存储(NVS)的存储子系统中的数据,所述经历重新启动过程的存活集群。 检测与存活簇的高速缓存相关联的存储器保存的指示符。 存储器保存的指示符指定在通过重新启动过程保留的故障集群的NVS中具有图像的标记轨迹。 幸存缓存的数据结构中的计数器增加。 如果计数器的值超过预定值,则初始化高速缓冲存储器,并且从高速缓存中移除标记的轨道,以防止由高速缓冲存储器中的破坏的结构导致的重复重新启动的实例。