公开(公告)号：US07827283B2

公开(公告)日：2010-11-02

申请号：US10367444

申请日：2003-02-19

Applicant: Vijay K. Naik ,  Vitthal Mahadeo Gogate ,  Divyesh Jadav ,  Inderpal Singh Narang ,  Prashant Pandey ,  Upendra Sharma ,  Pradeep Varma ,  Nagraj Alur

Inventor： Vijay K. Naik ,  Vitthal Mahadeo Gogate ,  Divyesh Jadav ,  Inderpal Singh Narang ,  Prashant Pandey ,  Upendra Sharma ,  Pradeep Varma ,  Nagraj Alur

IPC: G06F15/16 ,  G06F12/00

CPC classification number: H04L67/1095 ,  H04L29/06 ,  H04L67/1097 ,  H04L67/322 ,  H04L69/329

Abstract: A Resource Management and Reservation System (RMRS) for managing and reserving storage bandwidth, is a platform independent middleware layer that provides an interface to applications, their database management systems, or some other higher level data management systems like ADRS which does data management on behalf of the applications. RMRS is highly relevant in hosted environments where one or more applications may be run on behalf of multiple customers each with a unique service level agreement with the Service Provider. Through its interface to the aforementioned applications, RMRS allows each application or an application side management system to communicate expected future storage access requirements (e.g., periodic access for backups). The interface also allows applications to request urgent storage access (e.g., recovery actions may be requested without being planned ahead of time).

Abstract translation: 用于管理和保留存储带宽的资源管理和预留系统（RMRS）是一个独立于平台的中间件层，为应用程序，数据库管理系统或其他更高级别的数据管理系统（如代表数据管理的ADRS）提供接口 的应用程序。 RMRS在托管环境中高度相关，其中可以代表多个客户运行一个或多个应用程序，每个客户与服务提供商具有唯一的服务级别协议。 通过其与上述应用的接口，RMRS允许每个应用程序或应用程序侧管理系统传达预期的未来存储访问要求（例如，备份的定期访问）。 该接口还允许应用程序请求紧急存储访问（例如，可以在不提前计划的情况下请求恢复动作）。

公开(公告)号：US07558850B2

公开(公告)日：2009-07-07

申请号：US10663559

申请日：2003-09-15

Applicant: David Darden Chambliss ,  Bruce Light Hillsberg ,  Divyesh Jadav ,  Jaishankar Moothedath Menon ,  Prashant Pandey ,  Jian Xu ,  Ramachandran Gopalakrishna Menon ,  Tzongyu Paul Lee

Inventor： David Darden Chambliss ,  Bruce Light Hillsberg ,  Divyesh Jadav ,  Jaishankar Moothedath Menon ,  Prashant Pandey ,  Jian Xu ,  Ramachandran Gopalakrishna Menon ,  Tzongyu Paul Lee

IPC: G06F15/173

CPC classification number: H04L67/1097 ,  H04L69/329

Abstract: Provided is a method for managing a network providing Input/Output (I/O) paths between a plurality of host systems and storage volumes in storage systems. An application service connection definition is provided for each connection from a host to a storage volume. At least one service level guarantee definition is provided indicating performance criteria to satisfy service requirements included in at least one service level agreement with at least one customer for network resources. Each service level guarantee definition is associated with at least one application service connection definition. Monitoring is performed as to whether Input/Output (I/O) requests transmitted through the multiple I/O paths satisfy performance criteria indicated in the service level guarantee definition associated with the I/O paths.

Abstract translation: 提供了一种用于管理在存储系统中的多个主机系统和存储卷之间提供输入/输出（I / O）路径的网络的方法。 为从主机到存储卷的每个连接提供应用程序服务连接定义。 提供至少一个服务级别保证定义，其指示性能标准以满足包括在与至少一个客户的网络资源的至少一个服务级别协议中的服务要求。 每个服务级别保证定义与至少一个应用服务连接定义相关联。 执行关于通过多个I / O路径传输的输入/输出（I / O）请求是否满足与I / O路径相关联的服务级别保证定义中指示的性能标准的监视。

公开(公告)号：US20050076154A1

公开(公告)日：2005-04-07

申请号：US10663559

申请日：2003-09-15

Applicant: David Chambliss ,  Bruce Hillsberg ,  Divyesh Jadav ,  Jaishankar Menon ,  Prashant Pandey ,  Jian Xu ,  Ramachandran Menon

Inventor： David Chambliss ,  Bruce Hillsberg ,  Divyesh Jadav ,  Jaishankar Menon ,  Prashant Pandey ,  Jian Xu ,  Ramachandran Menon

IPC: H04L29/08 ,  G06F3/00 ,  G06F15/16 ,  G06F15/173

CPC classification number: H04L67/1097 ,  H04L69/329

Abstract: Provided are a method, system, and program for managing a network providing Input/Output (I/O) paths between a plurality of host systems and storage volumes in storage systems. An application service connection definition is provided for each connection from a host to a storage volume. At least one service level guarantee definition is provided indicating performance criteria to satisfy service requirements included in at least one service level agreement with at least one customer for network resources. Each service level guarantee definition is associated with at least one application service connection definition. Monitoring is performed as to whether Input/Output (I/O) requests transmitted through the multiple I/O paths satisfy performance criteria indicated in the service level guarantee definition associated with the I/O paths.

Abstract translation: 提供了一种用于管理在多个主机系统和存储系统中的存储卷之间提供输入/输出（I / O）路径的网络的方法，系统和程序。 为从主机到存储卷的每个连接提供应用程序服务连接定义。 提供至少一个服务级别保证定义，其指示性能标准以满足包括在与至少一个客户的网络资源的至少一个服务级别协议中的服务要求。 每个服务级别保证定义与至少一个应用服务连接定义相关联。 执行关于通过多个I / O路径传输的输入/输出（I / O）请求是否满足与I / O路径相关联的服务级别保证定义中指示的性能标准的监视。

公开(公告)号：US6105099A

公开(公告)日：2000-08-15

申请号：US203102

申请日：1998-11-30

Applicant: Richard Francis Freitas ,  Divyesh Jadav ,  Deepak Kenchammana-Hosekote ,  Jaishankar Moothedath Menon ,  Hovey Raymond Strong, Jr.

Inventor： Richard Francis Freitas ,  Divyesh Jadav ,  Deepak Kenchammana-Hosekote ,  Jaishankar Moothedath Menon ,  Hovey Raymond Strong, Jr.

IPC: G06F9/46 ,  G06F12/00 ,  G06F12/14

CPC classification number: G06F9/52

Abstract: To satisfy host requests, two competing processors self-manage access to a shared resource. Each processor maintains a lock table listing that processor's access state regarding the shared resource. Each processor repeatedly sends the other processor a state announcement message representing the processor's state. These include birth cry, heartbeat, or death knell messages. Whenever certain join-entry conditions apply to a processor, the processor performs a JOIN operation to evaluate and attempt to synchronize its lock table with the other processor's lock table. If data is needed from the other processor's lock table, the processor changes its state announcement message to birth cry. If the processor successfully synchronizes its lock table with the other processor, the JOIN operation dictates DUAL mode for that processor. If the synchronization attempt fails, SOLO results. When JOIN completes, the processor operates in its chosen mode. In DUAL, the processor's state announcement message is heartbeat, signifying healthy operation. In DUAL, the processors cooperatively establish temporary single-processor locks on the shared resource to satisfy host requests. In SOLO, a processor sets its state announcement message to death knell, advising the other processor not to access the shared resource. Also in SOLO, the processor attempts to "acquire" the shared resource by storing a predetermined identifier thereon. In SOLO, a processor refrains from accessing the shared resource unless it has acquired it.

Abstract translation: 为了满足主机请求，两个竞争的处理器自我管理对共享资源的访问。 每个处理器维护一个锁表，列出处理器关于共享资源的访问状态。 每个处理器重复地向其他处理器发送表示处理器状态的状态通知消息。 这些包括出生哭泣，心跳或死亡消息。 每当某个加入条件适用于处理器时，处理器执行JOIN操作来评估并尝试将其锁定表与其他处理器的锁定表同步。 如果需要其他处理器的锁定表的数据，处理器将其状态通知消息改变为出生哭泣。 如果处理器将其锁定表与其他处理器成功同步，则JOIN操作将指定该处理器的DUAL模式。 如果同步尝试失败，SOLO结果。 当JOIN完成时，处理器以其所选模式运行。 在DUAL中，处理器的状态通知信号是心跳，意味着健康运行。 在DUAL中，处理器在共享资源上协作建立临时单处理器锁以满足主机请求。 在SOLO中，处理器将其状态通知消息设置为死机，建议另一个处理器不要访问共享资源。 同样在SOLO中，处理器尝试通过在其上存储预定的标识符来“获取”共享资源。 在SOLO中，处理器除非已获取共享资源，否则不会访问共享资源。

公开(公告)号：US07228354B2

公开(公告)日：2007-06-05

申请号：US10187227

申请日：2002-06-28

Applicant: David Darden Chambliss ,  Divyesh Jadav

Inventor： David Darden Chambliss ,  Divyesh Jadav

IPC: G06F15/16

CPC classification number: H04L41/5022 ,  G06F11/1076 ,  H04L41/083 ,  H04L41/0896

Abstract: A method and system for optimizing the performance of a storage system by classifying each client request for resources based on operational limits of the resources and controlling when to submit the request for processing based on service class. The operational limits are determined from performance characteristics of the system resources and from the level of performance guaranteed to each client. By regulating the clients' usage of resources using the resource operational limits, total system performance requirements and guarantees can be achieved.

Abstract translation: 一种通过基于资源的操作限制对每个客户端资源请求进行分类来优化存储系统性能的方法和系统，并且基于服务类来控制何时提交处理请求。 操作限制取决于系统资源的性能特征和从保证的性能水平到每个客户端。 通过使用资源操作限制来规范客户的资源使用，可以实现系统总体性能要求和保证。

公开(公告)号：US07107403B2

公开(公告)日：2006-09-12

申请号：US10676464

申请日：2003-09-30

Applicant: Dharmendra Shantilal Modha ,  Divyesh Jadav ,  Pawan Goyal ,  Renu Tewari

Inventor： Dharmendra Shantilal Modha ,  Divyesh Jadav ,  Pawan Goyal ,  Renu Tewari

IPC: G06F12/00 ,  G06F13/00

CPC classification number: G06F9/5016 ,  G06F12/0871 ,  G06F12/12 ,  G06F2212/282 ,  G06F2212/6042

Abstract: A method and system for dynamically allocating cache space in a storage system among multiple workload classes each having a unique set of quality-of-service (QoS) requirements. The invention dynamically adapts the space allocated to each class depending upon the observed response time for each class and the observed temporal locality in each class. The dynamic allocation is achieved by maintaining a history of recently evicted pages for each class, determining a future cache size for the class based on the history and the QoS requirements where the future cache size might be different than a current cache size for the class, determining whether the QoS requirements for the class are being met, and adjusting the future cache size to maximize the number of classes in which the QoS requirements are met. The future cache sizes are increased for the classes whose QoS requirements are not met while they are decreased for those whose QoS requirements are met.

Abstract translation: 一种用于在多个工作负载类别中动态地分配存储系统中的高速缓存空间的方法和系统，每个工作负载类别具有唯一的服务质量（QoS）要求。 本发明根据每个类的观察到的响应时间和每个类中观察到的时间局部性动态地适应分配给每个类的空间。 通过维护每个类别的最近被逐出的页面的历史来实现动态分配，基于历史和QoS要求确定将来的高速缓存大小，其中将来的高速缓存大小可能与该类的当前高速缓存大小不同， 确定是否满足该类的QoS要求，以及调整未来的高速缓存大小以最大化满足QoS要求的类的数量。 对于满足QoS要求的类，对于满足QoS要求的用户而言，对于不满足QoS要求的类，对于未来的高速缓存大小会有所增加。

公开(公告)号：US06332197B1

公开(公告)日：2001-12-18

申请号：US09128574

申请日：1998-08-04

Applicant: Divyesh Jadav ,  Deepak R. Kenchammana-Hosekote ,  Jaishankar Moothedath Menon

Inventor： Divyesh Jadav ,  Deepak R. Kenchammana-Hosekote ,  Jaishankar Moothedath Menon

IPC: G06F1100

CPC classification number: G06F11/1076 ,  G06F2211/1028

Abstract: Disclosed is a system for updating and destaging data in a storage system. To overcome the limitations in the prior art described above, preferred embodiments of the present invention disclose a system for updating a data block in a storage device. A first processing unit receives an update to a data block in a storage device. The first processing unit sends a first message including the update and information indicating data blocks that were recently updated to a second processing unit. The second processing unit stores the update in a second storage area and sends a second message to the first processing unit after receiving the first message. The first processing unit stores the update in a first storage area and transfers the update from the first storage area to the data block in the storage device. The first processing unit transfers the update from the first storage area to the data block in the storage device. Data may be destaged from the first storage area by sending two messages before destage begins and two messages after destaging is completed so the second processing unit is aware of the state of the destaging operations.

Abstract translation: 公开了一种用于更新和降级存储系统中的数据的系统。 为了克服上述现有技术的限制，本发明的优选实施例公开了一种用于更新存储设备中的数据块的系统。 第一处理单元接收对存储装置中的数据块的更新。 第一处理单元将包括更新的第一消息和指示最近更新的数据块的信息发送到第二处理单元。 第二处理单元将更新存储在第二存储区域中，并且在接收到第一消息之后向第一处理单元发送第二消息。 第一处理单元将更新存储在第一存储区域中，并将更新从第一存储区域传送到存储设备中的数据块。 第一处理单元将更新从第一存储区域传送到存储设备中的数据块。 数据可以通过在开始运行之前发送两个消息并且在完成后的两个消息完成之后从第一个存储区域发送，所以第二个处理单元知道这些登录操作的状态。

公开(公告)号：US06272662B1

公开(公告)日：2001-08-07

申请号：US09129004

申请日：1998-08-04

Applicant: Divyesh Jadav ,  Jaishankar Moothedath Menon ,  Kaladhar Voruganti

Inventor： Divyesh Jadav ,  Jaishankar Moothedath Menon ,  Kaladhar Voruganti

IPC: G11C2900

CPC classification number: G06F3/0607 ,  G06F3/0637 ,  G06F3/064 ,  G06F3/0689

Abstract: Disclosed is a system for performing an operation, such as a read or write operation, on a data block in a shared disk system. A first adaptor receives a request to perform an operation on a data block maintained in a data storage location. The first adaptor then determines whether the first adaptor controls access to the data block. The first adaptor performs the requested operation on the data block after determining that the first adaptor controls access to the data block. If the first adaptor does not control access to the data block, then the first adaptor transmits a first message to a second adaptor that controls access to the data block and requests control of access to the data block. After receiving the first message, the second adaptor transfers control of access to the data block to the first adaptor. The second adaptor then transmits a second message to the first adaptor that the first adaptor controls access to the data block. After receiving the second message, the first adaptor performs the requested operation on the data block.

Abstract translation: 公开了一种用于在共享磁盘系统中的数据块上执行诸如读取或写入操作的操作的系统。 第一适配器接收对在数据存储位置中维护的数据块执行操作的请求。 然后，第一适配器确定第一适配器是否控制对数据块的访问。 确定第一个适配器控制对数据块的访问后，第一个适配器在数据块上执行请求的操作。 如果第一适配器不控制对数据块的访问，则第一适配器将第一消息发送到控制对数据块的访问的第二适配器，并请求对数据块的访问的控制。 在接收到第一消息之后，第二适配器将对数据块的访问控制传送到第一适配器。 然后，第二适配器向第一适配器发送第二消息，第一适配器控制对数据块的访问。 在接收到第二个消息之后，第一个适配器对数据块执行请求的操作。

公开(公告)号：US20090138616A1

公开(公告)日：2009-05-28

申请号：US12359377

申请日：2009-01-26

Applicant: Guillermo Alejandro Alvarez ,  David Darden Chambliss ,  Divyesh Jadav ,  Tzongyu Paul Lee ,  Ramachandran Gopalakrishna Menon ,  Prashant Pandey ,  Jian Xu

Inventor： Guillermo Alejandro Alvarez ,  David Darden Chambliss ,  Divyesh Jadav ,  Tzongyu Paul Lee ,  Ramachandran Gopalakrishna Menon ,  Prashant Pandey ,  Jian Xu

IPC: G06F15/173

CPC classification number: H04L43/00 ,  H04L29/06 ,  H04L41/5009 ,  H04L41/5019 ,  H04L41/5032 ,  H04L67/1097 ,  H04L67/322 ,  H04L69/329

Abstract: A system for utilizing informed throttling to guarantee quality of service to a plurality of clients includes a server core having a performance analyzer that compares a performance level received by a client to a corresponding contracted service level and determines if the client qualifies as a victim whose received performance level is less than the corresponding contracted service level. The performance analyzer is further configured to identify one or more candidates for throttling in response to an I/O stream receiving insufficient resources by determining if the client qualifies as a candidate whose received performance level is better than the corresponding contracted service level. The server core further includes a scheduler that selectively and dynamically issues a throttling command to the candidate client, and provides a quality of service enforcement point by concurrently monitoring a plurality of I/O streams to candidate clients and concurrently throttling commands to the candidate clients.

Abstract translation: 用于利用知情节流来保证对多个客户端的服务质量的系统包括具有性能分析器的服务器核心，性能分析器将客户端接收的性能水平与对应的合同服务级别进行比较，并确定客户端是否被接受为受害者 业绩水平低于相应的承包服务水平。 性能分析器还被配置为通过确定客户端是否符合接收到的性能水平优于对应的合同服务级别的候选者，来响应于接收到不足的资源的I / O流来识别用于节流的一个或多个候选者。 服务器核心还包括调度器，其选择性地和动态地向候选客户端发出限制命令，并且通过同时监视多个I / O流到候选客户端并同时向候选客户端调节命令来提供服务质量点。

公开(公告)号：US20080244590A1

公开(公告)日：2008-10-02

申请号：US11955122

申请日：2007-12-12

Applicant: David Darden Chambliss ,  Divyesh Jadav ,  Tzongyu Paul Lee ,  Ramachandran Gopalakrishna Menon ,  Prashant Pandey ,  Jian Xu

Inventor： David Darden Chambliss ,  Divyesh Jadav ,  Tzongyu Paul Lee ,  Ramachandran Gopalakrishna Menon ,  Prashant Pandey ,  Jian Xu

IPC: G06F9/46

CPC classification number: H04L41/0893 ,  H04L41/5003 ,  H04L41/5025 ,  H04L41/5038 ,  H04L41/5093 ,  H04L67/1097 ,  Y10S707/99931

Abstract: The present invention discloses a method, apparatus and program storage device for providing non-blocking, minimum threaded two-way messaging. A Performance Monitor Daemon provides one non-blocked thread pair per processor to support a large number of connections. The thread pair includes an outbound thread for outbound communication and an inbound thread for inbound communication. The outbound thread and the inbound thread operate asynchronously.

Abstract translation: 本发明公开了一种用于提供无阻塞，最小线程双向消息收发的方法，装置和程序存储装置。 性能监视器守护进程为每个处理器提供一个非阻塞线程对来支持大量连接。 线程对包括用于出站通信的出站线程和入站通信的入站线程。 出站线程和入站线程异步运行。