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1. 发明授权

US09146766B2 Consistent unmapping of application data in presence of concurrent, unquiesced writers and readers 有权
标题翻译：在存在并发的，不相关的作家和读者的情况下，应用数据的一致性失真
公开(公告)号：US09146766B2
公开(公告)日：2015-09-29
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： G06F9/455 , G06F12/02 , G06F3/06
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。

2. 发明授权

US08464113B1 Scan architecture for full custom blocks with improved scan latch 有权
标题翻译：扫描结构，完整的自定义块与改进的扫描锁存
公开(公告)号：US08464113B1
公开(公告)日：2013-06-11
申请号：US13617586
申请日：2012-09-14
申请人： Kiran Joshi , Manish Shrivastava
发明人： Kiran Joshi , Manish Shrivastava
IPC分类号： G01R31/28
CPC分类号： G01R31/318541
摘要： A non-fighting fully clocked scan latch is described that is dynamically configurable to support both logic data latching and scan data latching. The described scan latch circuit design reduces a load placed on a logic data latch portion of the described circuit by a scan latch portion of the described circuit, and thereby increases the speed of the described scan latch to that of an output latch without scan capability. Power required to drive the described scan latch is reduced by clocking the circuit to avoid fighting and by reducing the number of transistors included in transistor stacks internal to the scan latch. By reducing drive power requirements, eliminating internal latch fighting, and increasing latch response, a versatile scan latch is achieved that may be successfully implemented in a wide range of circuits despite the use of different supply drive voltage, threshold voltage, source-to-drain voltage, and transistor technology combinations.
摘要翻译：描述了一种不起作用的全时钟扫描锁存器，其可动态配置以支持逻辑数据锁存和扫描数据锁存。所描述的扫描锁存电路设计通过所描述的电路的扫描锁存部分来减少放置在所述电路的逻辑数据锁存部分上的负载，从而将所述扫描锁存器的速度提高到没有扫描能力的输出锁存器的速度。驱动所描述的扫描锁存器所需的功率通过对电路进行计时以避免发生故障并通过减少包括在扫描锁存器内部的晶体管堆叠中的晶体管的数量来减少。通过降低驱动功率要求，消除内部锁存和增加锁存器响应，实现了通用的扫描锁存器，尽管使用不同的电源驱动电压，阈值电压，源极到漏极，可以在广泛的电路中成功实现电压和晶体管技术组合。

3. 发明授权

US08392361B2 Centralized management of virtual machines 有权
标题翻译：集中管理虚拟机
公开(公告)号：US08392361B2
公开(公告)日：2013-03-05
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： G06F7/00 , 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 IO 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IO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。

4. 发明授权

US08209343B2 Namespace mapping to central storage 有权
标题翻译：命名空间映射到中央存储
公开(公告)号：US08209343B2
公开(公告)日：2012-06-26
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： G06F17/30 , G06F7/00
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。

5. 发明申请

US20100088328A1 NAMESPACE MAPPING TO CENTRAL STORAGE 有权
标题翻译：名称映射到中央存储
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。

6. 发明申请

US20100037041A1 Booting a Computer System from Central Storage 有权
标题翻译：从中央存储引导计算机系统
公开(公告)号：US20100037041A1
公开(公告)日：2010-02-11
申请号：US12189737
申请日：2008-08-11
申请人： Kiran Joshi , Sirish Raghuram , Bich Cau Le
发明人： Kiran Joshi , Sirish Raghuram , Bich Cau Le
IPC分类号： G06F9/24
CPC分类号： G06F9/4416 , G06F9/45533
摘要： 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.
摘要翻译：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。

7. 发明授权

US08381053B1 Generating a moving average 有权
标题翻译：生成移动平均线
公开(公告)号：US08381053B1
公开(公告)日：2013-02-19
申请号：US12404495
申请日：2009-03-16
申请人： Kiran Joshi
发明人： Kiran Joshi
IPC分类号： G06F11/00
CPC分类号： G11B20/1816 , G11B5/012 , H04L1/0045 , H04L1/0047 , H04L1/0057 , H04L1/0063
摘要： Devices, systems, methods, and other embodiments associated with generating a moving average are described. In one example method an average value of a sliding window of M sequential data values is calculated on a per clock basis, where M is an integer. A data value is detected that has an error. The data value is in the sliding window of M sequential data values. The method corrects the average value of the sliding window as a function of the error.
摘要翻译：描述了与生成移动平均线相关联的设备，系统，方法和其他实施例。在一个示例性方法中，以每个时钟为基础计算M个顺序数据值的滑动窗口的平均值，其中M是整数。检测到具有错误的数据值。数据值位于M个顺序数据值的滑动窗口中。该方法根据误差校正滑动窗口的平均值。

8. 发明申请

US20120331242A1 CONSISTENT UNMAPPING OF APPLICATION DATA IN PRESENCE OF CONCURRENT, UNQUIESCED WRITERS AND READERS 有权
标题翻译：一致性撤销同时存在的应用程序数据，不合格的作者和读者
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。

9. 发明授权

US07975195B1 Scan architecture for full custom blocks with improved scan latch 有权
标题翻译：扫描结构，完整的自定义块与改进的扫描锁存
公开(公告)号：US07975195B1
公开(公告)日：2011-07-05
申请号：US12547727
申请日：2009-08-26
申请人： Kiran Joshi , Manish Shrivastava
发明人： Kiran Joshi , Manish Shrivastava
IPC分类号： G01R31/28
CPC分类号： G01R31/318541
摘要： A non-fighting fully clocked scan latch is described that is dynamically configurable to support both logic data latching and scan data latching. The described scan latch circuit design reduces a load placed on a logic data latch portion of the described circuit by a scan latch portion of the described circuit, and thereby increases the speed of the described scan latch to that of an output latch without scan capability. Power required to drive the described scan latch is reduced by clocking the circuit to avoid fighting and by reducing the number of transistors included in transistor stacks internal to the scan latch. By reducing drive power requirements, eliminating internal latch fighting, and increasing latch response, a versatile scan latch is achieved that may be successfully implemented in a wide range of circuits despite the use of different supply drive voltage, threshold voltage, source-to-drain voltage, and transistor technology combinations.
摘要翻译：描述了一种不起作用的全时钟扫描锁存器，其可动态配置以支持逻辑数据锁存和扫描数据锁存。所描述的扫描锁存电路设计通过所描述的电路的扫描锁存部分来减少放置在所述电路的逻辑数据锁存部分上的负载，从而将所述扫描锁存器的速度提高到没有扫描能力的输出锁存器的速度。驱动所描述的扫描锁存器所需的功率通过对电路进行计时以避免发生故障并通过减少包括在扫描锁存器内部的晶体管堆叠中的晶体管的数量来减少。通过降低驱动功率要求，消除内部锁存和增加锁存器响应，实现了通用的扫描锁存器，尽管使用不同的电源驱动电压，阈值电压，源极到漏极，可以在广泛的电路中成功实现电压和晶体管技术组合。

10. 发明申请

US20100050170A1 Access to Data for Virtual Devices 有权
标题翻译：访问虚拟设备的数据
公开(公告)号：US20100050170A1
公开(公告)日：2010-02-25
申请号：US12195763
申请日：2008-08-21
申请人： Roopak Parikh , Kiran Joshi , Sirish Raghuram , Karthik Sreenivasa Murthy , Vasani Soam Snehal
发明人： Roopak Parikh , Kiran Joshi , Sirish Raghuram , Karthik Sreenivasa Murthy , Vasani Soam Snehal
IPC分类号： G06F9/455
CPC分类号： G06F9/45537
摘要： 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.
摘要翻译：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。

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