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    • 31. 发明申请
    • Preserving cache data against cluster reboot
    • 保存缓存数据以防集群重新启动
    • US20050005188A1
    • 2005-01-06
    • US10600030
    • 2003-06-20
    • Yu-Cheng HsuVernon LegvoldDavid Mannenbach
    • Yu-Cheng HsuVernon LegvoldDavid Mannenbach
    • H02H3/05
    • G06F11/2092G06F11/1441G06F11/1666
    • A dual cluster storage server maintains track control blocks (TCBs) in a data structure to describe the data stored in cache in corresponding track images or segments. Following a cluster failure and reboot, the surviving cluster uses the TCBs to rebuild data structures such as a scatter table, which is a hash table that identifies a location of a track image, and a least recently used (LRU)/most recently used (MRU) list for the track images. This allows the cache data to be recovered. The TCBs describe whether the data in the track images is modified and valid, and describe forward and backward pointers for the data in the LRU/MRU lists. A separate non-volatile memory that is updated as the track images are updated is used to verify the integrity of the TCBs.
    • 双集群存储服务器维护数据结构中的轨道控制块(TCB)以描述存储在相应轨道图像或段中的高速缓存中的数据。 在集群故障和重新启动之后,幸存的集群使用TCB来重建数据结构,例如分散表,其是标识轨迹图像的位置的哈希表,以及最近最少使用的(LRU)/最近使用的 MRU)轨道图像列表。 这样可以恢复高速缓存数据。 TCB描述轨道图像中的数据是否被修改和有效,并描述LRU / MRU列表中的数据的前向和后向指针。 随着跟踪图像被更新而更新的单独的非易失性存储器用于验证TCB的完整性。
    • 33. 发明授权
    • Providing versioning in a storage device
    • 在存储设备中提供版本控制
    • US08473700B2
    • 2013-06-25
    • US12749186
    • 2010-03-29
    • Lawrence Y. ChiuYu-Cheng Hsu
    • Lawrence Y. ChiuYu-Cheng Hsu
    • G06F13/10
    • G06F3/0653G06F3/0607G06F3/0631G06F3/0679G06F12/023G06F12/0246G06F2212/7209
    • Provided are a computer program product, system and method for managing Input/Output (I/O) requests to a storage device. A first entry is located in a volume control table for the logical address to write indicating a version number and a first physical location. The write data is written to a second physical location in the storage device. A second entry is added to the volume control table for the logical address in response to preserve mode being enabled. In response to determining that the preserve mode is enabled, the volume control table is updated to have one of the first and second entry for the logical address point to the second physical location and indicate a current version and to have the first or second entry not indicating the current version to indicate the first physical location and a previous version.
    • 提供了一种用于管理对存储设备的输入/输出(I / O)请求的计算机程序产品,系统和方法。 第一个条目位于要写入的逻辑地址的卷控制表中,指示版本号和第一物理位置。 写入数据被写入存储设备中的第二物理位置。 响应于启用保留模式,将第二个条目添加到音量控制表中用于逻辑地址。 响应于确定保持模式被启用,音量控制表被更新为具有用于逻辑地址的第一和第二条目中的一个指向第二物理位置并且指示当前版本并且使第一或第二条目不 指示当前版本以指示第一个物理位置和以前的版本。