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    • 1. 发明授权
    • Computer machine migration of file system images using a redo-log file
    • 使用重做日志文件的计算机机器迁移文件系统映像
    • US08359593B2
    • 2013-01-22
    • US12106736
    • 2008-04-21
    • Victor V. GolosovkerIlya LanguevSirish Raghuram
    • Victor V. GolosovkerIlya LanguevSirish Raghuram
    • G06F9/455
    • G06F3/0655G06F9/45558G06F9/4856G06F12/08G06F2009/4557
    • Systems and methods for migration between computing machines are disclosed. The source and target machines can be either physical or virtual; the source can also be a machine image. The target machine is connected to a snapshot or image of the source machine file system, and a redo-log file is created on the file system associated with the target machine. The target machine begins operation by reading data directly from the snapshot or image of the source machine file system. Thereafter, all writes are made to the redo-log file, and subsequent reads are made from the redo-log file if it contains data for the requested sector or from the snapshot or image if it does not. The source machine continues to be able to run separately and simultaneously after the target machine begins operation.
    • 公开了用于计算机之间迁移的系统和方法。 源机器和目标机器可以是物理的或虚拟的; 源也可以是机器图像。 目标机器连接到源机器文件系统的快照或映像,并在与目标机器相关联的文件系统上创建重做日志文件。 目标机器通过从源机器文件系统的快照或图像直接读取数据开始操作。 此后,对重做日志文件进行所有写入操作,如果重做日志文件包含所请求扇区的数据,或者从快照或映像文件中读取数据,则会从后续读取。 源机器继续能够在目标机器开始运行后分开运行并同时运行。
    • 6. 发明授权
    • Namespace mapping to central storage
    • 命名空间映射到中央存储
    • US08209343B2
    • 2012-06-26
    • US12246284
    • 2008-10-06
    • Kiran JoshiSirish RaghuramBich Cau LeGopala Suryanarayana
    • Kiran JoshiSirish RaghuramBich Cau LeGopala Suryanarayana
    • G06F17/30G06F7/00
    • G06F9/45558G06F2009/45579
    • A file management system includes a host computer having one or more virtual machines, a switching layer computer configured to manage a namespace map for the virtual machines in the host computer, and a central storage unit. The host computer is connected indirectly to the central storage unit through an in-band IO path that includes the switching layer computer and directly to the central storage unit through an out-of-band IO path. When a virtual machines issues a file operation, a file operation including a data operation is routed to the central storage unit along an out-of-band IO path and a file operation including a metadata operation is routed to the central storage unit along an in-band IO path that includes the switching layer computer.
    • 文件管理系统包括具有一个或多个虚拟机的主计算机,被配置为管理主计算机中的虚拟机的命名空间映射的交换层计算机以及中央存储单元。 主计算机通过包括交换层计算机并且通过带外IO路径直接连接到中央存储单元的带内IO路径间接连接到中央存储单元。 当虚拟机发出文件操作时,包括数据操作的文件操作沿着带外IO路径被路由到中央存储单元,并且包括元数据操作的文件操作沿着in-in路由到中央存储单元 包含交换层计算机的带宽IO路径。
    • 7. 发明申请
    • NAMESPACE MAPPING TO CENTRAL STORAGE
    • 名称映射到中央存储
    • US20100088328A1
    • 2010-04-08
    • US12246284
    • 2008-10-06
    • Kiran JOSHISirish RAGHURAMBich Cau LEGopala SURYANARAYANA
    • Kiran JOSHISirish RAGHURAMBich Cau LEGopala SURYANARAYANA
    • G06F12/02G06F9/455
    • G06F9/45558G06F2009/45579
    • A file management system includes a host computer having one or more virtual machines, a switching layer computer configured to manage a namespace map for the virtual machines in the host computer, and a central storage unit. The host computer is connected indirectly to the central storage unit through an in-band IO path that includes the switching layer computer and directly to the central storage unit through an out-of-band IO path. When a virtual machines issues a file operation, a file operation including a data operation is routed to the central storage unit along an out-of-band IO path and a file operation including a metadata operation is routed to the central storage unit along an in-band IO path that includes the switching layer computer.
    • 文件管理系统包括具有一个或多个虚拟机的主计算机,被配置为管理主计算机中的虚拟机的命名空间映射的交换层计算机以及中央存储单元。 主计算机通过包括交换层计算机并且通过带外IO路径直接连接到中央存储单元的带内IO路径间接连接到中央存储单元。 当虚拟机发出文件操作时,包括数据操作的文件操作沿着带外IO路径被路由到中央存储单元,并且包括元数据操作的文件操作沿着in-in路由到中央存储单元 包含交换层计算机的带宽IO路径。
    • 8. 发明申请
    • Booting a Computer System from Central Storage
    • 从中央存储引导计算机系统
    • US20100037041A1
    • 2010-02-11
    • US12189737
    • 2008-08-11
    • Kiran JoshiSirish RaghuramBich Cau Le
    • Kiran JoshiSirish RaghuramBich Cau Le
    • G06F9/24
    • G06F9/4416G06F9/45533
    • A filter driver that is loaded during an initial part of the boot process enable operating systems that are not capable of booting from central storage to be booted from central storage. According to this technique, an initial set of operating system files is loaded into system memory from a local storage volume. The initial set of files includes a small subset of all of the operating system files and includes a boot loader, a kernel, boot time drivers, a file system driver, and a filter driver. The filter driver takes control over the loading of the remainder of the operating system files, so that these files are loaded from central storage instead of the local storage volume.
    • 在引导过程的初始部分中加载的过滤器驱动程序使得无法从中央存储引导的操作系统从中央存储启动。 根据这种技术,初始的一组操作系统文件从本地存储卷被加载到系统存储器中。 初始文件集包括所有操作系统文件的一小部分,包括引导加载程序,内核,引导时间驱动程序,文件系统驱动程序和过滤器驱动程序。 过滤器驱动程序控制其余操作系统文件的加载,以便这些文件从中央存储而不是本地存储卷加载。
    • 10. 发明授权
    • Access to data for virtual devices
    • 访问虚拟设备的数据
    • US08819674B2
    • 2014-08-26
    • US12195763
    • 2008-08-21
    • Roopak ParikhKiran JoshiSirish RaghuramKarthik Sreenivasa MurthyVasani Soam Snehal
    • Roopak ParikhKiran JoshiSirish RaghuramKarthik Sreenivasa MurthyVasani Soam Snehal
    • G06F9/455
    • G06F9/45537
    • One embodiment of the present invention is a method for a virtual machine to access data from a virtual device, the method including: (a) attaching the virtual device to the virtual machine with a backing store that is a virtual image of a file system conforming to a predetermined file system format, wherein: (i) file system data is stored in one or more files, (ii) the virtual image includes metadata stored apart from the file system data, which metadata corresponds to the predetermined file system format, (iii) the metadata includes one or more directory records, and (iv) the one or more directory records include information that points directly or indirectly to the file system data; (b) issuing a read request for a block of data from the file system as if stored in the predetermined file system format; (c) accessing the metadata and determining the location of the requested block of data in the file system data; and (d) retrieving the requested block of data from the file system data.
    • 本发明的一个实施例是一种用于虚拟机从虚拟设备访问数据的方法,所述方法包括:(a)使用作为符合文件系统的虚拟映像的后备存储将虚拟设备附接到虚拟机 其中:(i)文件系统数据被存储在一个或多个文件中,(ii)虚拟图像包括与文件系统数据分开存储的元数据,该元数据对应于预定的文件系统格式( iii)元数据包括一个或多个目录记录,以及(iv)一个或多个目录记录包括直接或间接地指向文件系统数据的信息; (b)从文件系统发出对数据块的读取请求,如同以预定的文件系统格式存储; (c)访问元数据并确定所请求的数据块在文件系统数据中的位置; 和(d)从所述文件系统数据中检索所请求的数据块。