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    • 1. 发明申请
    • CONCURRENCY CONTROL IN A FILE SYSTEM SHARED BY APPLICATION HOSTS
    • 应用程序共享的文件系统中的同步控制
    • US20110010390A1
    • 2011-01-13
    • US12502086
    • 2009-07-13
    • Haripriya RAJAGOPALSatyam VAGHANIYuen-Lin TAN
    • Haripriya RAJAGOPALSatyam VAGHANIYuen-Lin TAN
    • G06F17/30G06F15/173
    • H04L29/08549G06F17/30168
    • A manager program for managing virtual machines includes a process which receives a notification message indicating an occurrence of an event affecting a data storage unit in a data storage system that supports a shared file system. The notification message might have come from a virtual machine host or resulted from a hardware reconfiguration. The manager program then determines whether another virtual machine host is sharing the data storage unit. The manager program might make this determination by polling each of the virtual machine hosts it manages or by checking information previously collected and stored in a database. If another virtual machine host is sharing the data storage unit, the manager program sends a refresh message to that virtual machine host that causes the virtual machine host to update information relating to the data storage unit in a cache associated with the virtual machine host.
    • 用于管理虚拟机的管理程序包括接收指示在支持共享文件系统的数据存储系统中影响数据存储单元的事件的发生的通知消息的处理。 通知消息可能来自虚拟机主机或由硬件重新配置导致。 管理程序然后确定另一个虚拟机主机是否共享数据存储单元。 管理程序可以通过轮询其管理的每个虚拟机主机或通过检查先前收集并存储在数据库中的信息来进行此确定。 如果另一个虚拟机主机正在共享数据存储单元,则管理程序向该虚拟机主机发送刷新消息,该虚拟机主机使虚拟机主机在与虚拟机主机相关联的高速缓存中更新与数据存储单元有关的信息。