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1. 发明申请

US20080184077A1 METHOD AND SYSTEM FOR HANDLING INPUT/OUTPUT (I/O) ERRORS 有权
标题翻译：用于处理输入/输出（I / O）错误的方法和系统
公开(公告)号：US20080184077A1
公开(公告)日：2008-07-31
申请号：US11668489
申请日：2007-01-30
申请人： Harish KUTTAN , Harish S. Babu , Gunneswara Marripudi , Roy M. Paul , Anand Ananthabhotla
发明人： Harish KUTTAN , Harish S. Babu , Gunneswara Marripudi , Roy M. Paul , Anand Ananthabhotla
IPC分类号： G06F11/00
CPC分类号： G06F11/0793 , G06F11/0712 , G06F11/0745
摘要： A method and system for handling errors on an Input/Output (I/O) link of a system is provided. The link is being shared by a plurality of devices of the system; each device may be shared by one or more operating systems. The method of error handling during configure of the system includes steps of checking a device for an error during configuration of the system and restricting the device from being configured, if an error is detected. The method includes the steps of examining the device capabilities to recover from errors, and; configuring the device in a first mode if the device has capabilities to recover from errors, else configuring the device in a second mode or not configuring the device. Further the handling of error may also be performed during runtime of the system, for doing so the step of checking is followed by a step of isolating and deleting the device if value of a number indicative of errors encountered for the device is greater than a threshold value. Else the method provides step of initiating a recovery process for the device and reporting result of the recovery process.
摘要翻译：提供了一种用于处理系统的输入/输出（I / O）链路上的错误的方法和系统。该链路由系统的多个设备共享; 每个设备可以被一个或多个操作系统共享。在系统配置期间的错误处理方法包括在检测到系统错误的过程中，检查设备配置过程中的错误并限制设备的配置。该方法包括检查设备从错误中恢复的能力的步骤; 如果设备具有从错误中恢复的能力，则以第一模式配置设备，否则以第二模式配置设备或不配置设备。此外，还可以在系统的运行时间期间执行错误的处理，为了这样做，检查步骤之后是分离和删除设备的步骤，如果指示设备遇到的错误的值的值大于阈值值。否则，该方法提供启动设备的恢复过程并报告恢复过程的结果的步骤。

2. 发明授权

US07620854B2 Method and system for handling input/output (I/O) errors 有权
标题翻译：处理输入/输出（I / O）错误的方法和系统
公开(公告)号：US07620854B2
公开(公告)日：2009-11-17
申请号：US11668489
申请日：2007-01-30
申请人： Harish Kuttan , Harish S. Babu , Gunneswara Marripudi , Roy M Paul , Anand Ananthabhotla
发明人： Harish Kuttan , Harish S. Babu , Gunneswara Marripudi , Roy M Paul , Anand Ananthabhotla
IPC分类号： G06F11/00
CPC分类号： G06F11/0793 , G06F11/0712 , G06F11/0745
摘要： A method and system for handling errors on an Input/Output (I/O) link of a system is provided. The link is being shared by a plurality of devices of the system; each device may be shared by one or more operating systems. The method of error handling during configure of the system includes steps of checking a device for an error during configuration of the system and restricting the device from being configured, if an error is detected. The method includes the steps of examining the device capabilities to recover from errors, and; configuring the device in a first mode if the device has capabilities to recover from errors, else configuring the device in a second mode or not configuring the device. Further the handling of error may also be performed during runtime of the system, for doing so the step of checking is followed by a step of isolating and deleting the device if value of a number indicative of errors encountered for the device is greater than a threshold value. Else the method provides step of initiating a recovery process for the device and reporting result of the recovery process.
摘要翻译：提供了一种用于处理系统的输入/输出（I / O）链路上的错误的方法和系统。该链路由系统的多个设备共享; 每个设备可以被一个或多个操作系统共享。在系统配置期间的错误处理方法包括在检测到系统错误的过程中，检查设备配置过程中的错误并限制设备的配置。该方法包括检查设备从错误中恢复的能力的步骤; 如果设备具有从错误中恢复的能力，则以第一模式配置设备，否则以第二模式配置设备或不配置设备。此外，还可以在系统的运行时间期间执行错误的处理，为了这样做，检查步骤之后是分离和删除设备的步骤，如果指示设备遇到的错误的值的值大于阈值值。否则，该方法提供启动设备的恢复过程并报告恢复过程的结果的步骤。

3. 发明申请

US20080183659A1 METHOD AND SYSTEM FOR DETERMINING DEVICE CRITICALITY IN A COMPUTER CONFIGURATION 有权
标题翻译：用于在计算机配置中确定设备关键性的方法和系统
公开(公告)号：US20080183659A1
公开(公告)日：2008-07-31
申请号：US11668493
申请日：2007-01-30
申请人： Harish Kuttan , Harish S. Babu , Gunneswara Marripudi , Roy M. Paul , Anand Ananthabhotla
发明人： Harish Kuttan , Harish S. Babu , Gunneswara Marripudi , Roy M. Paul , Anand Ananthabhotla
IPC分类号： G06F17/30
CPC分类号： G06F11/2247
摘要： A method for determining the criticality of a device in a multi-path computer configuration comprising the steps of: traversing a directed acyclic graph representing a platform hierarchy; and determining paths within the directed acyclic graph affected by the removal of the device. A computer system comprising a directed acyclic graph data structure representing a platform hierarchy; and a control arrangement for traversing the directed acyclic graph to determining paths therein affected by removal of a devices
摘要翻译：一种用于确定多路径计算机配置中的设备的关键性的方法，包括以下步骤：遍历代表平台层级的有向无环图; 以及确定受去除设备影响的有向无环图中的路径。一种计算机系统，包括代表平台层级的有向非循环图数据结构; 以及用于遍历有向非循环图以确定其中通过移除设备而受到影响的路径的控制装置

4. 发明申请

US20080256559A1 ONLINE DELETION OF DEVICES 有权
标题翻译：在线删除设备
公开(公告)号：US20080256559A1
公开(公告)日：2008-10-16
申请号：US11870151
申请日：2007-10-10
申请人： Suresh Rayasam Venkatasubbaiah , Anand Ananthabhotla , Ajitkumar Asikkadu Natarajan , Chethan Seshadri , Satheesh Kumar Nanniyur Krishnamoorthy , Nadathur Srinivasan Sundar , Paulose Kuriakose Arackal
发明人： Suresh Rayasam Venkatasubbaiah , Anand Ananthabhotla , Ajitkumar Asikkadu Natarajan , Chethan Seshadri , Satheesh Kumar Nanniyur Krishnamoorthy , Nadathur Srinivasan Sundar , Paulose Kuriakose Arackal
IPC分类号： G06F9/54 , G06F1/32
CPC分类号： G06F9/4411
摘要： An I/O adapter is installed in a slot in a computer system. Online deletion of the I/O adapter is achieved by a three step process, in which a device driver that controls the adapter first attempts to quiesce the adapter, the slot is then powered off, if it is possible to do so, and finally, if the quiesce operation was successful or the slot is powered off, the driver completes the delete operation by unmapping buffers and cleaning up datastructures associated with the device driver.
摘要翻译： I / O适配器安装在计算机系统的插槽中。在线删除I / O适配器是通过三步过程实现的，其中控制适配器的设备驱动程序首先尝试静音适配器，然后关闭插槽，如果可以这样做，最后，如果静音操作成功或插槽关闭，驱动程序通过取消映射缓冲区并清理与设备驱动程序相关联的数据结构来完成删除操作。

5. 发明授权

US09128625B1 Method and system for physical memory reservation for user-space programs 有权
标题翻译：用于用户空间程序的物理内存预留的方法和系统
公开(公告)号：US09128625B1
公开(公告)日：2015-09-08
申请号：US13430152
申请日：2012-03-26
申请人： Anand Ananthabhotla
发明人： Anand Ananthabhotla
IPC分类号： G06F3/06 , G06F9/44
CPC分类号： G06F3/0632 , G06F3/0644 , G06F9/4401 , G06F9/4406 , G06F9/44557 , G06F12/0223
摘要： Contiguous regions of physical memory may be reserved for user-space programs through a boot time parameter that specifically identifies the memory region to be reserved. In an implementation, the boot time parameter includes first and second values that are used to define a starting and ending address of the memory region to be reserved. The reserved memory is accessible by the operating system kernel storage and networking stacks so that the user-space programs can use services provided by the kernel storage and networking stacks.
摘要翻译：物理存储器的相邻区域可以通过专门识别要保留的存储器区域的引导时间参数来保留用于用户空间程序。在实现中，引导时间参数包括用于定义要保留的存储器区域的起始和结束地址的第一和第二值。保留的内存可由操作系统内核存储和网络堆栈访问，以便用户空间程序可以使用内核存储和网络堆栈提供的服务。

6. 发明授权

US08250276B2 Online deletion of devices 有权
标题翻译：在线删除设备
公开(公告)号：US08250276B2
公开(公告)日：2012-08-21
申请号：US11870151
申请日：2007-10-10
申请人： Suresh Rayasam Venkatasubbaiah , Anand Ananthabhotla , Ajitkumar Asikkadu Natarajan , Chethan Seshadri , Satheesh Kumar Nanniyur Krishnamoorthy , Nadathur Srinivasan Sundar , Paulose Kuriakose Arackal
发明人： Suresh Rayasam Venkatasubbaiah , Anand Ananthabhotla , Ajitkumar Asikkadu Natarajan , Chethan Seshadri , Satheesh Kumar Nanniyur Krishnamoorthy , Nadathur Srinivasan Sundar , Paulose Kuriakose Arackal
IPC分类号： G06F13/00 , G06F1/32
CPC分类号： G06F9/4411
摘要： An I/O adapter is installed in a slot in a computer system. Online deletion of the I/O adapter is achieved by a three step process, in which a device driver that controls the adapter first attempts to quiesce the adapter, the slot is then powered off, if it is possible to do so, and finally, if the quiesce operation was successful or the slot is powered off, the driver completes the delete operation by unmapping buffers and cleaning up datastructures associated with the device driver.
摘要翻译： I / O适配器安装在计算机系统的插槽中。在线删除I / O适配器是通过三步过程实现的，其中控制适配器的设备驱动程序首先尝试静音适配器，然后关闭插槽，如果可以这样做，最后，如果静音操作成功或插槽关闭，驱动程序通过取消映射缓冲区并清理与设备驱动程序相关联的数据结构来完成删除操作。

7. 发明授权

US09047018B1 Method and system for zero-copy disk IO using sector unaligned buffers 有权
标题翻译：使用扇区未对齐缓冲区的零拷贝磁盘IO的方法和系统
公开(公告)号：US09047018B1
公开(公告)日：2015-06-02
申请号：US13424589
申请日：2012-03-20
申请人： Anand Ananthabhotla
发明人： Anand Ananthabhotla
IPC分类号： G06F3/00 , G06F3/06 , G06F13/28
CPC分类号： G06F3/061 , G06F3/0613 , G06F3/0634 , G06F3/0638 , G06F3/0659 , G06F3/0673 , G06F13/28
摘要： Data is transferred between a requesting application and a storage device by passing the application IO buffer to the disk driver. Techniques are provided to avoid data copying to an intermediate sector aligned buffer and passing the intermediate buffer to the disk driver. The techniques allow the use of layered block device drivers such as a Logical Volume Manager (LVM), Distributed Replicated Block Device (DRBD), or both. A look-ahead can determine the IO constraints imposed by the layered block device drivers. Based on the constraints, an entire portion of the buffer may be added to an IO request, or the buffer may be split into a first portion and a second portion. The first portion may be added to a first IO request. The second portion may be added to a second IO request, different from the first IO request.
摘要翻译：通过将应用程序IO缓冲区传递到磁盘驱动器，数据在请求应用程序和存储设备之间传输。提供了技术来避免数据复制到中间扇区对齐缓冲区并将中间缓冲区传递到磁盘驱动器。这些技术允许使用分层块设备驱动程序，例如逻辑卷管理器（LVM），分布式复制块设备（DRBD）或两者。先行可以确定分层块设备驱动程序施加的IO约束。基于约束，缓冲器的整个部分可以被添加到IO请求，或者缓冲器可以被分割成第一部分和第二部分。可以将第一部分添加到第一IO请求。可以将第二部分添加到与第一IO请求不同的第二IO请求。

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