公开(公告)号：US20170364545A1

公开(公告)日：2017-12-21

申请号：US15187973

申请日：2016-06-21

申请人： MICHAEL C. Otto ,  Carl R. Crandall ,  Forest F. Crocker ,  Lnda J. Brock ,  Douglas A. Fuller ,  Michael J. Rieschl

发明人： MICHAEL C. Otto ,  Carl R. Crandall ,  Forest F. Crocker ,  Lnda J. Brock ,  Douglas A. Fuller ,  Michael J. Rieschl

IPC分类号： G06F17/30 ,  G06F9/455

摘要： A method includes determining, by a processor, whether a program check condition exists. The method further includes determining, by the processor, whether a lock descriptor of a lock in a file lock table satisfies an unlocking condition. The method further includes releasing, by the processor, the lock by setting the lock descriptor's host identifier as zero. The method further includes determining, by the processor, whether any lock in the file lock table satisfies a lock conflict condition. The method further includes determining, by the processor, whether the file lock table includes any lock descriptor that satisfies a locking condition. The method further includes creating, by the processor, a new lock using the lock descriptor that satisfies the locking condition.

公开(公告)号：US06799156B1

公开(公告)日：2004-09-28

申请号：US10133261

申请日：2002-04-26

申请人： Michael J. Rieschl ,  Carl R. Crandall ,  Thomas N. Devries ,  Haeng D. Park

发明人： Michael J. Rieschl ,  Carl R. Crandall ,  Thomas N. Devries ,  Haeng D. Park

IPC分类号： G06F9455

CPC分类号： G06F3/0664 ,  G06F3/0607 ,  G06F3/0661 ,  G06F3/0682

摘要： A method of and apparatus for efficiently and effectively coupling a newly designed peripheral device to a legacy data processing system. The approach utilizes emulation of a SCSI tape device by a SCSI DVD device. Through device emulation, system-wide modifications are minimized.

摘要翻译： 一种用于有效且有效地将新设计的外围设备耦合到传统数据处理系统的方法和设备。 该方法利用SCSI DVD设备对SCSI磁带设备的仿真。 通过器件仿真，系​​统范围的修改被最小化。

公开(公告)号：US06789133B1

公开(公告)日：2004-09-07

申请号：US10034701

申请日：2001-12-28

申请人： Carl R. Crandall ,  Thomas N. DeVries ,  Craig B. Johnson ,  Joseph E. Kessler ,  Michael C. Otto ,  Haeng D. Park ,  Michael J. Heideman

发明人： Carl R. Crandall ,  Thomas N. DeVries ,  Craig B. Johnson ,  Joseph E. Kessler ,  Michael C. Otto ,  Haeng D. Park ,  Michael J. Heideman

IPC分类号： G06F300

CPC分类号： G06F3/0661 ,  G06F3/0607 ,  G06F3/0685

摘要： A system and method for processing I/O requests in a computing system. I/O packets are created via an operating system associated with the computing system, where the I/O packets include I/O transaction information. The I/O packets are made accessible to an I/O system. A command for a channel type connecting a target I/O component to the I/O system is constructed, where this command construction is based on the I/O transaction information provided in the I/O packet, and based on physical aspects of the target I/O component and channel type provided independently of the I/O packet. The constructed command is issued to the target I/O component in accordance with the channel type.

摘要翻译： 一种用于在计算系统中处理I / O请求的系统和方法。 通过与计算系统相关联的操作系统创建I / O分组，其中I / O分组包括I / O交易信息。 I / O数据包可由I / O系统访问。 构建将目标I / O组件连接到I / O系统的通道类型的命令，其中该命令构造基于I / O分组中提供的I / O事务信息，并且基于物理方面 目标I / O组件和通道类型独立于I / O数据包提供。 构造的命令根据通道类型发送到目标I / O组件。

公开(公告)号：US20190258810A1

公开(公告)日：2019-08-22

申请号：US15933662

申请日：2018-03-23

申请人： CARL R. CRANDALL ,  ROBERT M. MALEK ,  RAVI KUMAR RAO ,  SOUVIK DAS ,  MANISH RANJAN MAHANTA

发明人： CARL R. CRANDALL ,  ROBERT M. MALEK ,  RAVI KUMAR RAO ,  SOUVIK DAS ,  MANISH RANJAN MAHANTA

IPC分类号： G06F21/62 ,  G06F17/30 ,  G06F9/50

摘要： A method and system for providing a plurality of host systems shared access to data files from a file server. The method includes monitoring a control file for updates, the control file located within a corresponding host directory located within the file server; receiving a request for access to a data file stored on the file server, the access request being written to the control file, the access request including a requested data file operation; performing the requested data file operation in response to the control file being updated with the access request; creating a status file in the host directory in which the requested data file operation was performed upon completion of the requested data file operation; writing status data in the status file, the status data including a result of the performance of the requested data file operation; and allowing access to the host directory in which the requested data file operation was performed in response to the status data being written to the status file.

公开(公告)号：US07177791B1

公开(公告)日：2007-02-13

申请号：US10729537

申请日：2003-12-05

申请人： Carl R. Crandall ,  Craig B. Johnson ,  Mitch M. Maurer ,  Yonghe Liu

发明人： Carl R. Crandall ,  Craig B. Johnson ,  Mitch M. Maurer ,  Yonghe Liu

IPC分类号： G06F9/455

CPC分类号： G06F9/45537 ,  G06F11/3636 ,  G06F11/3652

摘要： The various embodiments of the invention relate to analyzing operations of an emulated input-output processor. Instructions native to the first type of instruction processor are emulated on a second-type instruction processor. The instruction processor emulator executes an operating system that includes instructions native to the first type of instruction processor. The operating system includes instructions that write input/output (IO) requests to the memory arrangement in response to IO functions invoked by a program. An IOP emulator that is executable on the second-type processor emulates IOP processing of IO requests from the memory arrangement. The IOP emulator maintains in the memory arrangement a first set of data structures used in processing the IO requests. State data currently contained in the data structures is stored on a retentive storage device, and in response to user input controls, the state data is read from retentive storage and displayed.

摘要翻译： 本发明的各种实施例涉及分析仿真的输入 - 输出处理器的操作。 对第一类指令处理器本地的指令在第二类指令处理器上被仿真。 指令处理器模拟器执行包括本地对第一类型的指令处理器的指令的操作系统。 操作系统包括响应于由程序调用的IO功能将输入/输出（IO）请求写入存储器装置的指令。 可在第二类型处理器上执行的IOP仿真器模拟来自存储器装置的IO请求的IOP处理。 IOP仿真器在存储器布置中维护用于处理IO请求的第一组数据结构。 当前包含在数据结构中的状态数据存储在保持性存储设备上，并且响应于用户输入控件，从保持性存储读取状态数据并显示。

公开(公告)号：US20210117358A1

公开(公告)日：2021-04-22

申请号：US16803396

申请日：2020-02-27

申请人： Brian J. LePage ,  Carl R. Crandall

发明人： Brian J. LePage ,  Carl R. Crandall

IPC分类号： G06F13/40 ,  G06F13/16 ,  G06F9/455 ,  H04L29/06

摘要： A computing system includes a computer executing an emulated operating system, the emulated operating system including a multichannel control unit; a plurality of virtual drives accessible to the emulated operating system; and a communication channel, the communication channel connecting the multichannel control unit and the virtual drives through one or more virtual channels. The multichannel control unit sends a first data access request to a virtual drive through the first virtual channel of the communication channel, the multichannel control unit sends a second data access request to a virtual drive through the second virtual channel of the communication channel.

公开(公告)号：US20210117357A1

公开(公告)日：2021-04-22

申请号：US16658269

申请日：2019-10-21

申请人： Brian J. LePage ,  Carl R. Crandall

发明人： Brian J. LePage ,  Carl R. Crandall

IPC分类号： G06F13/40 ,  G06F13/16 ,  G06F9/455 ,  H04L29/06

摘要： A computing system includes a computer executing an emulated operating system, the emulated operating system including a multichannel control unit; a plurality of virtual drives accessible to the emulated operating system; and a communication channel, the communication channel connecting the multichannel control unit and the virtual drives through one or more virtual channels. The multichannel control unit sends a first data access request to a virtual drive through the first virtual channel of the communication channel, the multichannel control unit sends a second data access request to a virtual drive through the second virtual channel of the communication channel.

公开(公告)号：US10824748B2

公开(公告)日：2020-11-03

申请号：US15933662

申请日：2018-03-23

申请人： Carl R Crandall ,  Robert M Malek ,  Ravi Kumar Rao ,  Souvik Das ,  Manish Ranjan Mahanta

发明人： Carl R Crandall ,  Robert M Malek ,  Ravi Kumar Rao ,  Souvik Das ,  Manish Ranjan Mahanta

IPC分类号： G06F16/17 ,  G06F21/62 ,  G06F9/50 ,  G06F16/11

摘要： A method and system for providing a plurality of host systems shared access to data files from a file server. The method includes monitoring a control file for updates, the control file located within a corresponding host directory located within the file server; receiving a request for access to a data file stored on the file server, the access request being written to the control file, the access request including a requested data file operation; performing the requested data file operation in response to the control file being updated with the access request; creating a status file in the host directory in which the requested data file operation was performed upon completion of the requested data file operation; writing status data in the status file, the status data including a result of the performance of the requested data file operation; and allowing access to the host directory in which the requested data file operation was performed in response to the status data being written to the status file.

公开(公告)号：US10423603B2

公开(公告)日：2019-09-24

申请号：US15187973

申请日：2016-06-21

申请人： Michael C Otto ,  Carl R Crandall ,  Forest F Crocker ,  Lnda J Brock ,  Douglas A Fuller ,  Michael J Rieschl

发明人： Michael C Otto ,  Carl R Crandall ,  Forest F Crocker ,  Lnda J Brock ,  Douglas A Fuller ,  Michael J Rieschl

IPC分类号： G06F9/52 ,  G06F16/23

摘要： A method includes determining, by a processor, whether a program check condition exists. The method further includes determining, by the processor, whether a lock descriptor of a lock in a file lock table satisfies an unlocking condition. The method further includes releasing, by the processor, the lock by setting the lock descriptor's host identifier as zero. The method further includes determining, by the processor, whether any lock in the file lock table satisfies a lock conflict condition. The method further includes determining, by the processor, whether the file lock table includes any lock descriptor that satisfies a locking condition. The method further includes creating, by the processor, a new lock using the lock descriptor that satisfies the locking condition.

公开(公告)号：US09594707B2

公开(公告)日：2017-03-14

申请号：US14474745

申请日：2014-09-02

申请人： Michael J Heideman ,  E. Brian Garrett ,  Steven M Wierdsma ,  Carl R Crandall

发明人： Michael J Heideman ,  E. Brian Garrett ,  Steven M Wierdsma ,  Carl R Crandall

IPC分类号： G06F13/28

CPC分类号： G06F13/28

摘要： Systems and methods for performing data input/output (I/O) operations using a computer network communications link are described. A method may include assigning a block of virtual addresses for usage with at least one computer network communications link. The method may also include registering the entire block of virtual addresses prior to an operating system partition performing I/O operations using the at least one computer network communications link, wherein registering comprises setting a plurality of virtual page frame numbers of the block of virtual addresses to point to distinct pages of physical memory. In some embodiments, one or more I/O operations may be performed using the at least one computer network communications link and the registered block of virtual addresses.

摘要翻译： 描述使用计算机网络通信链路执行数据输入/输出（I / O）操作的系统和方法。 方法可以包括为至少一个计算机网络通信链路分配用于使用的虚拟地址块。 该方法还可以包括在使用至少一个计算机网络通信链路执行I / O操作的操作系统分区之前注册整个虚拟地址块，其中注册包括设置虚拟地址块的多个虚拟页面帧号码 指向物理内存的不同页面。 在一些实施例中，可以使用至少一个计算机网络通信链路和注册的虚拟地址块来执行一个或多个I / O操作。