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    • 55. 发明公开
    • VIRTUAL MACHINE-PRESERVING HOST UPDATES
    • HOSTAKTUALISIERUNGEN ZUR KONSERVIERUNG VIRTUELLER电脑
    • EP2929431A1
    • 2015-10-14
    • EP13815213.7
    • 2013-12-02
    • Microsoft Technology Licensing, LLC
    • RUSSINOVICH, Mark EugeneRAGHURAMAN, Melur K.
    • G06F9/445G06F9/455
    • G06F8/656G06F8/63G06F8/65G06F9/44G06F9/455G06F9/45533G06F9/45545G06F2009/45575
    • Techniques are described for updating a host operating system on a server while maintaining virtual machines running on the server. An updated host operating system is copied to the server. The currently active host operating system freezes the virtual machines but leaves them resident in RAM. The allocations and state for each virtual machine is copied to RAM or local storage. The active host operating system is shut down. Instead of issuing a command to reboot the server after it finishes shutting down, the active host operating system transfers execution to a loader. The loader reads the kernel of the updated host operating system into RAM along with an allocation map for the virtual machines and instructions to resume the virtual machines. The loader transfers execution to the updated host operating system entry point, and the updated host operating system loads the states of the virtual machines and resumes them.
    • 描述了在维护在服务器上运行的虚拟机的同时更新服务器上的主机操作系统的技术。 更新的主机操作系统被复制到服务器。 当前活动的主机操作系统冻结虚拟机,但将其驻留在RAM中。 每个虚拟机的分配和状态被复制到RAM或本地存储。 主机操作系统关闭。 在完成关闭后,不是发出重新启动服务器的命令,而是主动操作系统将执行转移到加载程序。 加载器将更新的主机操作系统的内核与虚拟机的分配映射以及恢复虚拟机的指令一起读取到RAM中。 加载器将执行转移到更新的主机操作系统入口点,并且更新的主机操作系统加载虚拟机的状态并恢复它们。