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1. 发明授权

US08667224B1 Techniques for data prefetching 有权
标题翻译：数据预取技术
公开(公告)号：US08667224B1
公开(公告)日：2014-03-04
申请号：US12004300
申请日：2007-12-20
申请人： Rong Yu , Orit Levin-Michael , John W. Lefferts , Pei-Ching Hwang , Peng Yin , Yechiel Yochai , Dan Aharoni , Qun Fan , Stephen R. Ives
发明人： Rong Yu , Orit Levin-Michael , John W. Lefferts , Pei-Ching Hwang , Peng Yin , Yechiel Yochai , Dan Aharoni , Qun Fan , Stephen R. Ives
IPC分类号： G06F12/00
CPC分类号： G06F12/0862 , G06F2212/6024
摘要： Described are techniques for processing a data operation in a data storage system. A front-end component of the data storage system receives the data operation. In response to receiving the data operation, the front-end component performs first processing. The first processing includes determining whether the data operation is a read operation requesting to read a data portion which results in a cache miss; and if said determining determines that the data operation is a read operation resulting in a cache miss, performing read miss processing. Read miss processing includes sequential stream recognition processing performed by the front-end component to determine whether the data portion is included in a sequential stream.
摘要翻译：描述了用于处理数据存储系统中的数据操作的技术。数据存储系统的前端组件接收数据操作。响应于接收到数据操作，前端组件执行第一处理。第一处理包括确定数据操作是否是请求读取导致高速缓存未命中的数据部分的读取操作; 并且如果所述确定确定数据操作是导致高速缓存未命中的读取操作，则执行读出未命中处理。读未命中处理包括由前端组件执行的顺序流识别处理，以确定数据部分是否包括在顺序流中。

2. 发明授权

US08082390B1 Techniques for representing and storing RAID group consistency information 有权
标题翻译：用于表示和存储RAID组一致性信息的技术
公开(公告)号：US08082390B1
公开(公告)日：2011-12-20
申请号：US11820574
申请日：2007-06-20
申请人： Qun Fan , Stephen R. Ives , Ran Margalit , Michael J. Scharland , Zvi Gabriel Benhanokh , Rong Yu
发明人： Qun Fan , Stephen R. Ives , Ran Margalit , Michael J. Scharland , Zvi Gabriel Benhanokh , Rong Yu
IPC分类号： G06F12/00
CPC分类号： G06F11/1092 , G06F2211/1057
摘要： Described are techniques for representing and using RAID group consistency information. RAID group consistency information for a slice of data included on a device may be obtained by mapping the slice to an index. The index is one of a plurality of indices each associated with a structure indicating RAID group inconsistencies for a different portion of slices of data of the device. If the index is not associated with a structure, it may be determined that there is no RAID group inconsistency for the slice. If the index is associated with a structure, a hint bit associated with the slice may be determined wherein the hint bit encodes summary consistency information for a plurality of slices. A determination is made as to whether the hint bit is set, and, if the hint bit is not set, it is determined that there is no RAID group inconsistency for the slice.
摘要翻译：描述了用于表示和使用RAID组一致性信息的技术。可以通过将切片映射到索引来获得用于设备上包括的数据片的RAID组一致性信息。索引是多个索引中的一个，每个索引与指示用于设备的数据片段的不同部分的RAID组不一致的结构相关联。如果索引不与结构相关联，则可以确定该片不存在RAID组不一致。如果索引与结构相关联，则可以确定与切片相关联的提示位，其中提示比特编码多个切片的摘要一致性信息。确定提示位是否被设置，并且如果提示位未被设置，则确定该片不存在RAID组不一致。

3. 发明授权

US07146439B1 Management of background copy task for point-in-time copies 有权
标题翻译：管理后台复制任务的时间点副本
公开(公告)号：US07146439B1
公开(公告)日：2006-12-05
申请号：US10607653
申请日：2003-06-27
申请人： Adi Ofer , Daniel E. Rabinovich , Stephen R. Ives , Peng Yin , Cynthia J. Burns , Ran Margalit , Rong Yu
发明人： Adi Ofer , Daniel E. Rabinovich , Stephen R. Ives , Peng Yin , Cynthia J. Burns , Ran Margalit , Rong Yu
IPC分类号： G06F3/00
CPC分类号： G06F3/0659 , G06F3/0611 , G06F3/065 , G06F3/0689 , G06F9/4881
摘要： A scheduling method and apparatus for use by a processor that controls storage devices of a data storage system is presented. The method allocates processing time between I/O operations and background operations for predetermined time slots based on an indicator of processor workload.
摘要翻译：提出了一种由控制数据存储系统的存储设备的处理器使用的调度方法和装置。该方法基于处理器工作负载的指示符来为预定时隙在I / O操作和后台操作之间分配处理时间。

4. 发明授权

US07711858B2 Management of background copy task for point-in-time copies 有权
标题翻译：管理后台复制任务的时间点副本
公开(公告)号：US07711858B2
公开(公告)日：2010-05-04
申请号：US11551827
申请日：2006-10-23
申请人： Adi Ofer , Daniel E. Rabinovich , Stephen R. Ives , Peng Yin , Cynthia J. Burns , Ran Margalit , Rong Yu
发明人： Adi Ofer , Daniel E. Rabinovich , Stephen R. Ives , Peng Yin , Cynthia J. Burns , Ran Margalit , Rong Yu
IPC分类号： G06F3/00
CPC分类号： G06F3/0659 , G06F3/0611 , G06F3/065 , G06F3/0689 , G06F9/4881
摘要： A scheduling method and apparatus for use by a processor that controls storage devices of a data storage system is presented. The method allocates processing time between I/O operations and background operations for predetermined time slots based on an indicator of processor workload.
摘要翻译：提出了一种由控制数据存储系统的存储设备的处理器使用的调度方法和装置。该方法基于处理器工作负载的指示符来为预定时隙在I / O操作和后台操作之间分配处理时间。

5. 发明授权

US08423728B1 Physical based scheduler using run count and skip count values 有权
标题翻译：基于物理的调度程序使用运行计数和跳过计数值
公开(公告)号：US08423728B1
公开(公告)日：2013-04-16
申请号：US11154234
申请日：2005-06-16
申请人： Rong Yu , Peng Yin , Stephen R. Ives , Adi Ofer , Gilad Sade , Barak Bejerano
发明人： Rong Yu , Peng Yin , Stephen R. Ives , Adi Ofer , Gilad Sade , Barak Bejerano
IPC分类号： G06F12/00 , G06F13/00
CPC分类号： G06F3/0613 , G06F3/0659 , G06F3/0683 , G06F2206/1012
摘要： Scheduling jobs for a plurality of logical devices associated with physical devices includes assigning a physical run count value and a physical skip count value to each of the physical devices, at each iteration, examining the physical skip count value and the physical run count value for each of the physical devices, and scheduling a number of jobs up to the physical run count value for logical devices associated with a particular one of the physical devices at each iteration corresponding to the physical skip count value for the particular one of the physical devices. The physical skip count value and the physical run count value for a particular one of the physical devices may vary according to a total load of the particular physical device. The total load of the particular physical device may vary according to a number of jobs for all logical devices associated with the particular physical device and a total number of all jobs for all physical devices associated with a particular physical device controller.
摘要翻译：对于与物理设备相关联的多个逻辑设备的调度作业包括在每次迭代时向每个物理设备分配物理运行计数值和物理跳过计数值，检查每个物理跳过计数值和物理跳过计数值的物理设备，并且对于与特定物理设备的物理跳过计数值相对应的每个迭代，对与特定物理设备相关联的逻辑设备的物理运行计数值调度多个作业。物理跳跃计数值和物理设备的特定物理运行计数值可以根据特定物理设备的总负载而变化。特定物理设备的总负载可以根据与特定物理设备相关联的所有逻辑设备的作业数量以及与特定物理设备控制器相关联的所有物理设备的所有作业的总数而变化。

6. 发明授权

US08301851B1 Consecutive scheduling of jobs for a device using run count values 有权
标题翻译：使用运行计数值连续调度设备的作业
公开(公告)号：US08301851B1
公开(公告)日：2012-10-30
申请号：US11154964
申请日：2005-06-16
申请人： Rong Yu , Peng Yin , Stephen R. Ives , Adi Ofer , Gilad Sade , Barak Bejerano
发明人： Rong Yu , Peng Yin , Stephen R. Ives , Adi Ofer , Gilad Sade , Barak Bejerano
IPC分类号： G06F12/00 , G06F13/00
CPC分类号： G06F3/0613 , G06F3/0659 , G06F3/0683 , G06F2206/1012
摘要： Scheduling jobs for a plurality of devices includes assigning a run count value to each of the devices, scheduling a number of consecutive jobs up to the run count value, and decrementing the run count value according to the number of consecutive jobs scheduled. The run count value for a particular one of the devices may vary according to a total load of the particular one of the devices. The total load of the particular device may vary according to a number of pending jobs for the particular device and a total number of jobs for all devices coupled to a controller for the devices. The devices may be disk drive devices. Only one read job may be scheduled for a device irrespective of the run count value for the device and devices having pending read jobs may be given precedence over other devices. Multiple read jobs may be scheduled for a device according to the run count value and devices having pending read jobs may be given precedence over other devices. The disk drive devices may be subdivided into a plurality of logical devices.
摘要翻译：针对多个设备的调度作业包括：将运行计数值分配给每个设备，将多个连续作业调度直到运行计数值，以及根据调度的连续作业的数量递减运行计数值。特定一个设备的运行计数值可以根据特定设备的总负载而变化。特定设备的总负载可以根据特定设备的待处理作业的数量以及耦合到设备的控制器的所有设备的总数量而变化。这些设备可以是磁盘驱动器设备。可以为设备调度一个读取作业，而不管设备的运行计数值如何，并且具有待处理读取作业的设备可以优先于其他设备。可以根据运行计数值为设备调度多个读取作业，并且具有未决读取作业的设备可以优先于其他设备。磁盘驱动器设备可以被细分为多个逻辑设备。

7. 发明授权

US07454668B1 Techniques for data signature and protection against lost writes 有权
标题翻译：用于数据签名和防止丢失写入的技术
公开(公告)号：US07454668B1
公开(公告)日：2008-11-18
申请号：US11234612
申请日：2005-09-23
申请人： Yechiel Yochai , Stephen R. Ives , Michael Scharland
发明人： Yechiel Yochai , Stephen R. Ives , Michael Scharland
IPC分类号： G06F11/00
CPC分类号： G06F11/1435 , G06F11/2082 , G06F2211/1007
摘要： Described are techniques for verifying data. A write operation request for writing to a first data block is received. A first copy of an identifier for said first data block in a memory is updated. A second copy of the identifier for the first data block is updated. The second copy is stored with the first data block on a data storage device. A read operation request is received for the first data block. The first data block and an associated identifier from the data storage device are read. Data verification processing is performed for the first block in accordance with the associated identifier, the first copy from the memory, and any pending write operations for the first data block.
摘要翻译：描述了用于验证数据的技术。接收写入第一数据块的写入操作请求。更新存储器中的所述第一数据块的标识符的第一副本。第一个数据块的标识符的第二个副本被更新。第二副本与第一数据块一起存储在数据存储设备上。接收第一数据块的读操作请求。读取来自数据存储设备的第一数据块和相关联的标识符。根据相关联的标识符，来自存储器的第一副本以及第一数据块的任何未决写入操作，针对第一块执行数据验证处理。

8. 发明授权

US08706960B1 Techniques for performing data migration 有权
标题翻译：执行数据迁移的技术
公开(公告)号：US08706960B1
公开(公告)日：2014-04-22
申请号：US12586925
申请日：2009-09-29
申请人： Stephen R. Ives , John F. Madden, Jr. , Michael Dudnik , Hagit Brit-Artzi , Roii Raz , Hui Wang , Gabi Hershkovitz , Qun Fan , Ofer Michael
发明人： Stephen R. Ives , John F. Madden, Jr. , Michael Dudnik , Hagit Brit-Artzi , Roii Raz , Hui Wang , Gabi Hershkovitz , Qun Fan , Ofer Michael
IPC分类号： G06F13/00
CPC分类号： G06F3/0647 , G06F3/0604 , G06F3/0617 , G06F3/0683 , G06F3/0688 , G06F2003/0697
摘要： Described are techniques for performing data migration for a source logical volume and a target. The target is configured as storage for another mirror of the source logical volume prior to copying data from the source logical volume to the target, and if the target is configured storage of another logical volume of the data storage system, the configured storage is remapped as storage for another mirror of the source logical volume prior to copying data from the source logical volume to the target. One or more invalid bits are set indicating that the target does not contain a valid copy of data from the source logical volume. Data is copied from the first mirror of the source logical volume to the target. Invalid bits are cleared as data portions of the first mirror of the source logical volume are copied to the target.
摘要翻译：描述了用于为源逻辑卷和目标执行数据迁移的技术。在将数据从源逻辑卷复制到目标之前，将目标配置为源逻辑卷的另一个镜像的存储，并且如果目标是数据存储系统的另一个逻辑卷的配置存储，则将配置的存储重新映射为在将数据从源逻辑卷复制到目标之前，存储源逻辑卷的另一个镜像。设置一个或多个无效位，指示目标不包含来自源逻辑卷的数据的有效副本。数据从源逻辑卷的第一个镜像复制到目标。无效位被清除，因为源逻辑卷的第一个镜像的数据部分被复制到目标。

9. 发明授权

US06904470B1 Device selection by a disk adapter scheduler 有权
标题翻译：磁盘适配器调度程序进行设备选择
公开(公告)号：US06904470B1
公开(公告)日：2005-06-07
申请号：US10397403
申请日：2003-03-26
申请人： Adi Ofer , William P. Powers, Jr. , Gilad Sade , Amit Kumar , Stephen R. Ives , Ran Margalit , Daniel E. Rabinovich , Peng Yin
发明人： Adi Ofer , William P. Powers, Jr. , Gilad Sade , Amit Kumar , Stephen R. Ives , Ran Margalit , Daniel E. Rabinovich , Peng Yin
IPC分类号： G06F3/06 , G06F13/00
CPC分类号： G06F3/0659 , G06F3/061 , G06F3/0689 , G06F11/2056
摘要： A scheduler for selecting a logical volume for scheduling pending I/O tasks for job generation. The scheduler includes a main scheduler that selects from among multiple sub-schedulers that operate according to different scheduling approaches, e.g., high priority read I/O request scheduling, urgency of non-read I/O tasks, as well as load balancing and round robin schemes. In selecting a sub-scheduler, the main scheduler considers the amount of time allocated to performing read I/O requests, as well as the level of urgency associated with the logical volumes and the disk adapter that manages those logical volumes for non-read I/O tasks.
摘要翻译：用于选择用于调度用于作业生成的等待的I / O任务的逻辑卷的调度器。调度器包括主调度器，其从根据不同调度方式操作的多个子调度器中进行选择，例如，高优先级读I / O请求调度，非读I / O任务的紧急性以及负载平衡和圆知识产权计划。在选择子调度器时，主调度器考虑分配用于执行读I / O请求的时间量以及与逻辑卷相关联的紧急程度以及管理用于非读I的逻辑卷的磁盘适配器 / O任务。

10. 发明授权

US07694119B1 Techniques for device initialization 有权
标题翻译：设备初始化技术
公开(公告)号：US07694119B1
公开(公告)日：2010-04-06
申请号：US11393137
申请日：2006-03-30
申请人： Michael J. Scharland , James P. McCarthy , Stephen R. Ives
发明人： Michael J. Scharland , James P. McCarthy , Stephen R. Ives
IPC分类号： G06F15/177
CPC分类号： G06F3/0632 , G06F3/0607 , G06F3/067
摘要： Described are techniques for initializing a device in a data storage system. An indicator is set in an entry associated with a portion of the device indicating that the portion of the device is to be initialized. A signature field of the entry is set with a signature value indicating that the portion of the device is to be initialized. The device is indicated as available for use after setting the indicator and the signature field for each portion of the device. The device has one or more portions and each of the portions has a corresponding entry including an indicator and a signature field.
摘要翻译：描述了用于初始化数据存储系统中的设备的技术。在与设备的一部分相关联的条目中设置指示符，指示设备的该部分将被初始化。条目的签名字段被设置为具有指示要初始化设备的部分的签名值。在设置设备的每个部分的指示符和签名字段之后，该设备被指示为可用。设备具有一个或多个部分，并且每个部分具有包括指示符和签名字段的对应条目。

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