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1. 发明授权

US07783663B2 Dynamic path partitioning to multipath storage devices 有权
标题翻译：动态路径划分到多路径存储设备
公开(公告)号：US07783663B2
公开(公告)日：2010-08-24
申请号：US12029202
申请日：2008-02-11
申请人： James P. Allen , Timothy M. Damron , Stephen M. Tee , Teerasit Tinnakul
发明人： James P. Allen , Timothy M. Damron , Stephen M. Tee , Teerasit Tinnakul
IPC分类号： G06F7/00 , G06F17/30
CPC分类号： G06F3/0635 , G06F3/0613 , G06F3/067 , G06F2206/1012 , H04L67/1002 , H04L67/1008 , H04L67/101 , H04L67/1097 , Y10S707/99942 , Y10S707/99943 , Y10S707/99948
摘要： A mechanism is provided for balancing I/O among available paths connected to a device. The mechanism partitions paths so a device can use all or only a subset of available paths to a device, depending on the load of I/O for other devices that are sharing the paths. The partitioning of paths is dynamic, readjusting as I/O loads change for the devices.
摘要翻译：提供了一种用于在连接到设备的可用路径之间平衡I / O的机制。该机制分割路径，因此设备可以使用设备可用路径的全部或仅一部分子集，具体取决于共享路径的其他设备的I / O负载。路径的分割是动态的，随着设备的I / O负载变化而重新调整。

2. 发明申请

US20080133810A1 DYNAMIC PATH PARTITIONING TO MULTIPATH STORAGE DEVICES 有权
标题翻译：动态路径分配到多路存储设备
公开(公告)号：US20080133810A1
公开(公告)日：2008-06-05
申请号：US12029202
申请日：2008-02-11
申请人： James P. Allen , Timothy M. Damron , Stephen M. Tee , Teerasit Tinnakul
发明人： James P. Allen , Timothy M. Damron , Stephen M. Tee , Teerasit Tinnakul
IPC分类号： G06F13/364
CPC分类号： G06F3/0635 , G06F3/0613 , G06F3/067 , G06F2206/1012 , H04L67/1002 , H04L67/1008 , H04L67/101 , H04L67/1097 , Y10S707/99942 , Y10S707/99943 , Y10S707/99948
摘要： A mechanism is provided for balancing I/O among available paths connected to a device. The mechanism partitions paths so a device can use all or only a subset of available paths to a device, depending on the load of I/O for other devices that are sharing the paths. The partitioning of paths is dynamic, readjusting as I/O loads change for the devices.
摘要翻译：提供了一种用于在连接到设备的可用路径之间平衡I / O的机制。该机制分割路径，因此设备可以使用设备可用路径的全部或仅一部分子集，具体取决于共享路径的其他设备的I / O负载。路径的分割是动态的，随着设备的I / O负载变化而重新调整。

3. 发明授权

US07337235B2 Dynamic path partitioning to multipath storage devices 有权
标题翻译：动态路径划分到多路径存储设备
公开(公告)号：US07337235B2
公开(公告)日：2008-02-26
申请号：US10976261
申请日：2004-10-28
申请人： James P. Allen , Timothy M. Damron , Stephen M. Tee , Teerasit Tinnakul
发明人： James P. Allen , Timothy M. Damron , Stephen M. Tee , Teerasit Tinnakul
IPC分类号： G06F15/173
CPC分类号： G06F3/0635 , G06F3/0613 , G06F3/067 , G06F2206/1012 , H04L67/1002 , H04L67/1008 , H04L67/101 , H04L67/1097 , Y10S707/99942 , Y10S707/99943 , Y10S707/99948
摘要： A mechanism is provided for balancing I/O among available paths connected to a device. The mechanism partitions paths so a device can use all or only a subset of available paths to a device, depending on the load of I/O for other devices that are sharing the paths. The partitioning of paths is dynamic, readjusting as I/O loads change for the devices.
摘要翻译：提供了一种用于在连接到设备的可用路径之间平衡I / O的机制。该机制分割路径，因此设备可以使用设备可用路径的全部或仅一部分子集，具体取决于共享路径的其他设备的I / O负载。路径的分割是动态的，随着设备的I / O负载变化而重新调整。

4. 发明授权

US07076573B2 Method, apparatus, and program for detecting sequential and distributed path errors in MPIO 失效
标题翻译：用于检测MPIO中的顺序和分布式路径错误的方法，装置和程序
公开(公告)号：US07076573B2
公开(公告)日：2006-07-11
申请号：US10718096
申请日：2003-11-20
申请人： James Patrick Allen , Timothy M. Damron , Stephen M. Tee , Teerasit Tinnakul
发明人： James Patrick Allen , Timothy M. Damron , Stephen M. Tee , Teerasit Tinnakul
IPC分类号： G06F15/173 , G06F13/00
CPC分类号： H04L67/1097 , G06F11/0727 , G06F11/076 , G06F11/201
摘要： An error detection mechanism is provided for detecting sequential and distributed errors in a device I/O stream. The sensitivity of the errors is user definable. The result of the error detection is fed back into the path management software, which may use the error information to decide whether a device path should be disabled. The error detection mechanism sets a time span for a time window and counts the number of errors that occur during the time window. Each time a time window ends with at least one error, the sequential error count and the distributed error count are incremented. However, if an I/O returns without an error, the sequential error count is cleared. If the sequential error count reaches a predetermined limit, the path is disabled. After a predetermined number of time windows, if the distributed error count reaches a predetermined limit, the path is disabled.
摘要翻译：提供了一种用于检测设备I / O流中的顺序和分布错误的错误检测机制。错误的敏感度是用户定义的。将错误检测的结果反馈到路径管理软件中，路径管理软件可以使用错误信息来决定是否禁用设备路径。错误检测机制设置时间窗口的时间间隔，并计算在时间窗口期间发生的错误数量。每次时间窗口以至少一个错误结束时，顺序错误计数和分布式错误计数都会递增。但是，如果I / O返回没有错误，则顺序错误计数被清除。如果顺序错误计数达到预定限制，则路径被禁用。在预定数量的时间窗口之后，如果分布式错误计数达到预定限制，则路径被禁用。

5. 发明授权

US07058758B2 Load balancing to support tape and disk subsystems on shared fibre channel adapters 有权
标题翻译：负载平衡以支持共享光纤通道适配器上的磁带和磁盘子系统
公开(公告)号：US07058758B2
公开(公告)日：2006-06-06
申请号：US10687260
申请日：2003-10-16
申请人： James Patrick Allen , Jayant Vitthalbhai Patel , Stephen M. Tee , Teerasit Tinnakul
发明人： James Patrick Allen , Jayant Vitthalbhai Patel , Stephen M. Tee , Teerasit Tinnakul
IPC分类号： G06F12/00
CPC分类号： G06F3/0635 , G06F3/0613 , G06F3/0685 , G06F11/3433 , G06F11/3485 , G06F2206/1012
摘要： A mechanism is provided for monitoring I/O activity of each device and the total I/O activity for each adapter. When there is low I/O activity for the tape subsystem, the I/O for the disk subsystems may be spread across all available adapters and paths. When I/O activity for the tape subsystem increases, the I/O activity for the disk subsystems may be reduced on the adapter processing the tape I/O, but will continue across all other adapters. If the tape subsystem begins to report errors due to I/O starvation, the disk I/O activity may be adjusted until the errors stop.
摘要翻译：提供了一种机制，用于监视每个设备的I / O活动以及每个适配器的总I / O活动。当磁带子系统的I / O活动较低时，磁盘子系统的I / O可能会扩展到所有可用的适配器和路径上。当磁带子系统的I / O活动增加时，可能会在处理磁带I / O的适配器上减少磁盘子系统的I / O活动，但会在所有其他适配器上继续运行。如果磁带子系统由于I / O不足而开始报告错误，则可能会调整磁盘I / O活动，直到错误停止为止。

6. 发明授权

US08271706B2 Stabilization of host to storage subsystem ownership 失效
标题翻译：主机到存储子系统所有权的稳定
公开(公告)号：US08271706B2
公开(公告)日：2012-09-18
申请号：US12125633
申请日：2008-05-22
申请人： John L. Neemidge , Nishant B. Shah , Stephen M. Tee , Teerasit Tinnakul
发明人： John L. Neemidge , Nishant B. Shah , Stephen M. Tee , Teerasit Tinnakul
IPC分类号： G06F3/00 , G06F5/00 , G06F13/12 , G06F13/38
CPC分类号： G06F3/0635 , G06F3/0617 , G06F3/067 , G06F3/0689 , G06F11/2092
摘要： The present invention provides a computer implemented method and apparatus to revising logical unit ownership in a host. A host receives an error message from a storage subsystem having at least two storage controllers and at least one logical unit coupled to at least one of the storage controllers. The host suspends I/O from the host to the storage subsystem. The host transmits a verification of logical unit ownership query to the storage subsystem. The host determines that ownership between a host and a logical unit on the at least one of the storage controllers has changed from a mapping table of the host. Responsive to a determination that ownership has changed, the host updates ownership in a mapping table of the host to reflect the ownership between the host and the logical unit. The host resumes I/O from the host to the storage subsystem, wherein the host routinely exchanges I/O with the storage subsystem.
摘要翻译：本发明提供了一种用于修改主机中的逻辑单元所有权的计算机实现的方法和装置。主机从具有至少两个存储控制器的存储子系统接收错误消息，以及耦合到至少一个存储控制器的至少一个逻辑单元。主机将I / O从主机挂起到存储子系统。主机向存储子系统发送逻辑单元所有权查询的验证。所述主机确定所述至少一个所述存储控制器上的主机与逻辑单元之间的所有权已经从所述主机的映射表改变。响应于所有权已经改变的确定，主机更新主机映射表中的所有权，以反映主机和逻辑单元之间的所有权。主机从主机恢复到存储子系统的I / O，其中主机定期与存储子系统交换I / O。

7. 发明申请

US20090292834A1 STABILIZATION OF HOST TO STORAGE SUBSYSTEM OWNERSHIP 失效
标题翻译：存储子系统所有权的主机稳定
公开(公告)号：US20090292834A1
公开(公告)日：2009-11-26
申请号：US12125633
申请日：2008-05-22
申请人： John L. Neemidge , Nishant B. Shah , Stephen M. Tee , Teerasit Tinnakul
发明人： John L. Neemidge , Nishant B. Shah , Stephen M. Tee , Teerasit Tinnakul
IPC分类号： G06F3/00
CPC分类号： G06F3/0635 , G06F3/0617 , G06F3/067 , G06F3/0689 , G06F11/2092
摘要： The present invention provides a computer implemented method and apparatus to revising logical unit ownership in a host. A host receives an error message from a storage subsystem having at least two storage controllers and at least one logical unit coupled to at least one of the storage controllers. The host suspends I/O from the host to the storage subsystem. The host transmits a verification of logical unit ownership query to the storage subsystem. The host determines that ownership between a host and a logical unit on the at least one of the storage controllers has changed from a mapping table of the host. Responsive to a determination that ownership has changed, the host updates ownership in a mapping table of the host to reflect the ownership between the host and the logical unit. The host resumes I/O from the host to the storage subsystem, wherein the host routinely exchanges I/O with the storage subsystem.
摘要翻译：本发明提供了一种用于修改主机中的逻辑单元所有权的计算机实现的方法和装置。主机从具有至少两个存储控制器的存储子系统接收错误消息，以及耦合到至少一个存储控制器的至少一个逻辑单元。主机将I / O从主机挂起到存储子系统。主机向存储子系统发送逻辑单元所有权查询的验证。所述主机确定所述至少一个所述存储控制器上的主机与逻辑单元之间的所有权已经从所述主机的映射表改变。响应于所有权已经改变的确定，主机更新主机映射表中的所有权，以反映主机和逻辑单元之间的所有权。主机从主机恢复到存储子系统的I / O，其中主机定期与存储子系统交换I / O。

8. 发明授权

US07302448B2 System and method for maintaining multiple devices with a single device identifier 失效
标题翻译：用于使用单个设备标识符维护多个设备的系统和方法
公开(公告)号：US07302448B2
公开(公告)日：2007-11-27
申请号：US10960606
申请日：2004-10-07
申请人： Chris Alan Schwendiman , Stephen M. Tee , Teerasit Tinnakul
发明人： Chris Alan Schwendiman , Stephen M. Tee , Teerasit Tinnakul
IPC分类号： G06F17/30
CPC分类号： G06F9/44505 , Y10S707/99944 , Y10S707/99945
摘要： A method, computer program product, and a data processing system for maintaining object configuration data in a data processing system is provided. A first set of attribute entries is stored in a database. The first set of attribute entries is associated with a first object classification and a second object classification. A second set and a third set of attribute entries each including at least one attribute entry are stored in the database. The second set of attribute entries is associated with the first object classification, and the third set of attribute entries are associated with the second object classification. A first object of the first object classification is configured with the first set of attribute entries and the second set of attribute entries, and a second object of the second object classification is configured with the first set of attribute entries and the third set of attribute entries.
摘要翻译：提供了一种用于在数据处理系统中维护对象配置数据的方法，计算机程序产品和数据处理系统。第一组属性条目存储在数据库中。第一组属性条目与第一对象分类和第二对象分类相关联。每个包括至少一个属性条目的第二集合和第三组属性条目存储在数据库中。第二组属性条目与第一对象分类相关联，第三组属性条目与第二对象分类相关联。第一对象分类的第一对象被配置有第一组属性条目和第二组属性条目，并且第二对象分类的第二对象被配置有第一组属性条目和第三组属性条目。

9. 发明授权

US08024498B2 Transitions between ordered and ad hoc I/O request queueing 失效
标题翻译：有序和特别I / O请求排队之间的转换
公开(公告)号：US08024498B2
公开(公告)日：2011-09-20
申请号：US12335307
申请日：2008-12-15
申请人： James P. Allen , Nicholas S. Ham , John L. Neemidge , Stephen M. Tee
发明人： James P. Allen , Nicholas S. Ham , John L. Neemidge , Stephen M. Tee
IPC分类号： G06F3/00 , G06F13/00
CPC分类号： G06F9/546 , G06F2209/548
摘要： Disclosed is a computer implemented method and apparatus for queuing I/O requests to a pending queue. The I/O device driver sets a maximum ordered queue length for an I/O device driver coupled to a storage device then receives an I/O request from an application. The I/O device driver determines whether the pending queue is sorted and responds to a determination that the pending queue is sorted, determining if queued I/O requests exceed the maximum ordered queue length. Responding to a determination that the pending queue exceeds the maximum ordered queue length, the I/O device driver adds the I/O request based on a high pointer, and points the high pointer to the I/O request.
摘要翻译：公开了一种用于将I / O请求排队到等待队列的计算机实现的方法和装置。 I / O设备驱动程序设置耦合到存储设备的I / O设备驱动程序的最大有序队列长度，然后从应用程序接收I / O请求。 I / O设备驱动程序确定待处理队列是否被排序，并响应确定等待队列被排序的确定，确定排队的I / O请求是否超过最大有序队列长度。响应于挂起队列超过最大有序队列长度的确定，I / O设备驱动程序根据高指针添加I / O请求，并将高指针指向I / O请求。

10. 发明授权

US08086896B2 Dynamically tracking virtual logical storage units 失效
标题翻译：动态跟踪虚拟逻辑存储单元
公开(公告)号：US08086896B2
公开(公告)日：2011-12-27
申请号：US12647664
申请日：2009-12-28
申请人： James P. Allen , Kiran K. Anumalasetty , Sudhir Maddali , Bhyrav M. Mutnury , James A. Pafumi , Sanket Rathi , Stephen M. Tee
发明人： James P. Allen , Kiran K. Anumalasetty , Sudhir Maddali , Bhyrav M. Mutnury , James A. Pafumi , Sanket Rathi , Stephen M. Tee
IPC分类号： G06F11/00
CPC分类号： G06F12/10 , G06F11/1443
摘要： In virtualized environments, storage may be managed dynamically due to the changing data storage requirements. In such environments, logical storage unit identifiers (LUN IDs) may be modified as a result of deleting an existing mapping between physical storage and a virtualization server and recreating the mapping. This can result in I/O request failure. Techniques for resolving errors resulting from LUN ID modifications can be time-intensive and labor-intensive and can disrupt a communication path between a host device and the physical storage. Functionality can be implemented to dynamically identify the LUN ID modifications, determine valid LUN IDs, and retransmit failed I/O requests. This can help minimize I/O request failures due to LUN ID modifications without disrupting the communication path between the host device and the physical storage.
摘要翻译：在虚拟化环境中，存储可能由于数据存储需求的变化而动态管理。在这种环境中，可以通过删除物理存储和虚拟化服务器之间的现有映射并重新创建映射来修改逻辑存储单元标识符（LUN ID）。这可能导致I / O请求失败。用于解决由LUN ID修改产生的错误的技术可能是耗时且费力的，并且可能会中断主机设备和物理存储之间的通信路径。可以实现功能来动态识别LUN ID修改，确定有效的LUN ID，并重新发送失败的I / O请求。这可以帮助最小化由于LUN ID修改而导致的I / O请求失败，而不会中断主机设备和物理存储之间的通信路径。

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