公开(公告)号：US20120331242A1

公开(公告)日：2012-12-27

申请号：US13166486

申请日：2011-06-22

申请人： Faraz SHAIKH ,  Murali VILAYANNUR ,  Satyam B. VAGHANI ,  Kiran JOSHI

发明人： Faraz SHAIKH ,  Murali VILAYANNUR ,  Satyam B. VAGHANI ,  Kiran JOSHI

IPC分类号： G06F12/02 ,  G06F12/00

CPC分类号： G06F3/0608 ,  G06F3/0631 ,  G06F3/0652 ,  G06F3/0665 ,  G06F3/067 ,  G06F9/45533 ,  G06F9/45558 ,  G06F12/0253 ,  G06F12/0261 ,  G06F12/0269 ,  G06F12/0276 ,  G06F17/30138 ,  G06F17/30194 ,  G06F17/30233 ,  G06F2009/45579 ,  G06F2212/1044 ,  G06F2212/154

摘要： Free storage blocks previously allocated to a logical block device are released back to an underlying storage system supporting the logical block device in a manner that does not conflict with write operations that may be issued to the free storage blocks at about the same time. According to a first technique, write operations on the same storage blocks to be released are paused until the underlying storage system has completed the releasing operation or, if the write operations are issued earlier than when the underlying storage system actually performs the releasing operation, such storage blocks are not released. According to a second technique, a special file is allocated the free storage blocks, which are then made available for safe releasing.

摘要翻译： 先前分配给逻辑块设备的空闲存储块以与同时发布到空闲存储块的写入操作不冲突的方式被释放回支持逻辑块设备的底层存储系统。 根据第一技术，暂停对要释放的相同存储块的写入操作，直到底层存储系统已经完成释放操作，或者如果写入操作早于底层存储系统实际执行释放操作时发出，则 存储块未被释放。 根据第二种技术，将特殊文件分配给空闲的存储块，然后使其可用于安全释放。

公开(公告)号：US20100088328A1

公开(公告)日：2010-04-08

申请号：US12246284

申请日：2008-10-06

申请人： Kiran JOSHI ,  Sirish RAGHURAM ,  Bich Cau LE ,  Gopala SURYANARAYANA

发明人： Kiran JOSHI ,  Sirish RAGHURAM ,  Bich Cau LE ,  Gopala SURYANARAYANA

IPC分类号： G06F12/02 ,  G06F9/455

CPC分类号： G06F9/45558 ,  G06F2009/45579

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20100036889A1

公开(公告)日：2010-02-11

申请号：US12274303

申请日：2008-11-19

申请人： Kiran JOSHI ,  Sirish RAGHURAM ,  Bich Cau LE ,  Gopala SURYANARAYANA

发明人： Kiran JOSHI ,  Sirish RAGHURAM ,  Bich Cau LE ,  Gopala SURYANARAYANA

IPC分类号： G06F9/455 ,  G06F17/30

CPC分类号： G06F9/455 ,  G06F9/45558 ,  G06F17/30194 ,  G06F2009/45579 ,  Y10S707/99933

摘要： Virtual machines are managed in centralized manner. Files that are shared by multiple virtual machines are stored in a central storage unit and a management program is executed on one or more of these files on a per file basis. The management program is executed on a file if an 10 operation is issued for that file. A namespace map is used to provide a mapping of filenames used by the different virtual machines to filenames used by the central storage unit.

摘要翻译： 虚拟机以集中方式进行管理。 由多个虚拟机共享的文件存储在中央存储单元中，并且在每个文件的基础上对一个或多个这些文件执行管理程序。 如果为该文件发出10次操作，则管理程序在文件上执行。 命名空间映射用于提供不同虚拟机使用的文件名与中央存储单元使用的文件名的映射。