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1. 发明授权

US06785771B2 Method, system, and program for destaging data in cache 失效
标题翻译：用于在缓存中降级数据的方法，系统和程序
公开(公告)号：US06785771B2
公开(公告)日：2004-08-31
申请号：US10005003
申请日：2001-12-04
申请人： Kevin John Ash , Brent Cameron Beardsley , Michael Thomas Benhase , Joseph Smith Hyde, II , Thomas Charles Jarvis , Steven Robert Lowe , David Frank Mannenbach
发明人： Kevin John Ash , Brent Cameron Beardsley , Michael Thomas Benhase , Joseph Smith Hyde, II , Thomas Charles Jarvis , Steven Robert Lowe , David Frank Mannenbach
IPC分类号： G06F1200
CPC分类号： G06F12/0871 , G06F12/0804
摘要： Provided is a method, system, and program for destaging data from a first computer readable medium to a second computer readable medium. A list of entries indicating data blocks in the first computer readable medium is scanned. For each entry scanned, a determination is made as to whether the data block indicated in the scanned entry satisfies a criteria. If the data block indicated in the scanned entry satisfies the criteria, then a destage operation is called to destage the data block in the scanned entry from the first computer readable medium to the second computer readable medium. If the called destage operation is not initiated, then the scanned entry is removed from the cache list. The removed scanned entry is added to one destage wait list. During one destage operation, data blocks indicated in entries in the destage wait list are destaged.
摘要翻译：提供了一种用于将数据从第一计算机可读介质降级到第二计算机可读介质的方法，系统和程序。扫描第一计算机可读介质中指示数据块的条目列表。对于扫描的每个条目，确定扫描条目中指示的数据块是否满足标准。如果扫描条目中指示的数据块满足标准，则调度一个转移操作以将扫描条目中的数据块从第一计算机可读介质转移到第二计算机可读介质。如果未启动所呼叫的终止操作，则从缓存列表中删除扫描的条目。已删除的扫描条目将添加到一个目的地等待列表中。在一个运行期间，在目的地等待列表中的条目中指示的数据块已停止运行。

2. 发明授权

US06775738B2 Method, system, and program for caching data in a storage controller 失效
标题翻译：用于缓存存储控制器中数据的方法，系统和程序
公开(公告)号：US06775738B2
公开(公告)日：2004-08-10
申请号：US09932765
申请日：2001-08-17
申请人： Kevin John Ash , Brent Cameron Beardsley , Michael Thomas Benhase
发明人： Kevin John Ash , Brent Cameron Beardsley , Michael Thomas Benhase
IPC分类号： G06F1200
CPC分类号： G06F12/0873 , G06F12/0804 , G06F2212/262 , G06F2212/285
摘要： Provided is a method, system, and program for caching updates to one target storage device in a first and second memories, wherein the target storage device is one of a plurality of storage devices. A determination is made of an allocation of available space in the second memory to the storage devices, wherein a total of the allocation of the available space to all the storage devices exceeds one hundred percent of the available space in the second memory. An update to one target storage device is received and then a determination is made as to whether adding the update to the second memory will exceed the allocation of available space for the target storage device in the second memory. One copy of the update is written to the second memory if adding the update to the second memory will not exceed the allocation of available space for the target storage device.
摘要翻译：提供了一种用于将更新缓存到第一和第二存储器中的一个目标存储设备的方法，系统和程序，其中目标存储设备是多个存储设备之一。确定第二存储器中的可用空间的分配给存储设备，其中对所有存储设备的可用空间的总共分配超过第二存储器中的可用空间的百分之一。接收对一个目标存储设备的更新，然后确定是否将对第二存储器的更新添加将超过第二存储器中的目标存储设备的可用空间的分配。如果将更新添加到第二个内存中，则将更新的一个副本写入第二个内存不会超过目标存储设备的可用空间分配。

3. 发明授权

US07051174B2 Method, system, and program for restoring data in cache 有权
标题翻译：缓存中恢复数据的方法，系统和程序
公开(公告)号：US07051174B2
公开(公告)日：2006-05-23
申请号：US10255026
申请日：2002-09-24
申请人： Kevin John Ash , Vernon J. Legvold , Steven Robert Lowe , David Frank Mannenbach , Carol Santich Mellgren , Kenneth Wayne Todd , William Dennis Williams
发明人： Kevin John Ash , Vernon J. Legvold , Steven Robert Lowe , David Frank Mannenbach , Carol Santich Mellgren , Kenneth Wayne Todd , William Dennis Williams
IPC分类号： G06F12/02
CPC分类号： G06F11/1666 , G06F11/20 , G06F11/2089 , Y10S707/99953 , Y10S707/99955
摘要： Provided are a method, system, and program for maintaining data in a first cache and second cache, wherein a backup cache maintains a backup copy of data in the first cache, and wherein the first cache is used to cache a first set of data in a storage system and the second cache is used to cache a second set of data in the storage system. An unavailable state of the first cache is detected. In response to detecting the unavailable state, requests to the first set of data are blocked and at least one space in the second cache is allocated for data in the backup cache. Requests to the first set of data are allowed to proceed after the at least one space is allocated in the second cache and before the data in the backup cache is copied to the at least one allocated space in the second cache. The data from the backup cache is copied to the allocated at least one space in the second cache after the requests to the first set of data are allowed to proceed.
摘要翻译：提供了一种用于在第一高速缓存和第二高速缓存中维护数据的方法，系统和程序，其中备份高速缓存维护第一高速缓存中的数据的备份副本，并且其中第一高速缓存用于高速缓存第一组数据存储系统和第二高速缓存用于在存储系统中缓存第二组数据。检测到第一个缓存的不可用状态。响应于检测不可用状态，阻止对第一组数据的请求，并且为备份高速缓存中的数据分配第二高速缓存中的至少一个空间。允许在第二高速缓存中分配至少一个空间之后并且在将备份高速缓存中的数据复制到第二高速缓存中的至少一个分配的空间之前对第一组数据进行请求。在对第一组数据的请求被允许继续之后，来自备份高速缓存的数据被复制到第二高速缓存中分配的至少一个空间。

4. 发明授权

US07826380B2 Apparatus, system, and method for data tracking 有权
标题翻译：用于数据跟踪的装置，系统和方法
公开(公告)号：US07826380B2
公开(公告)日：2010-11-02
申请号：US11093393
申请日：2005-03-30
申请人： Kevin John Ash , Susan Kay Candelaria , David Frank Mannenbach , Brian Anthony Rinaldi
发明人： Kevin John Ash , Susan Kay Candelaria , David Frank Mannenbach , Brian Anthony Rinaldi
IPC分类号： G01R31/08
CPC分类号： G06F11/079 , G06F11/0727 , G06F11/076 , G06F11/0772
摘要： An apparatus, system, and method are disclosed for data tracking and, in particular, for facilitating failure management within an electronic data communication system. The apparatus includes a tracking module and an error analysis module. The tracking module stores an adapter identifier in a tracking array. The adapter identifier corresponds to a source adapter from which data is received. The error analysis module determines a source of a data failure in response to recognition of the data failure. The data failure may occur on a host adapter, a device adapter, a communication fabric, a multi-processor, or another communication device. The apparatus, system, and method may be implemented in place of or in addition to hardware-assisted data integrity checking within a data storage system.
摘要翻译：公开了一种用于数据跟踪的装置，系统和方法，特别是用于促进电子数据通信系统内的故障管理。该装置包括跟踪模块和误差分析模块。跟踪模块将适配器标识符存储在跟踪数组中。适配器标识符对应于从其接收数据的源适配器。错误分析模块响应于数据故障的识别确定数据故障的来源。数据故障可能发生在主机适配器，设备适配器，通信结构，多处理器或其他通信设备上。该装置，系统和方法可以代替数据存储系统中的硬件辅助数据完整性检查来替代或补充。

5. 发明授权

US09396102B2 Recovery from cache and NVS out of sync 有权
公开(公告)号：US09396102B2
公开(公告)日：2016-07-19
申请号：US13617076
申请日：2012-09-14
申请人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Kenneth Wayne Todd
发明人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Kenneth Wayne Todd
IPC分类号： G06F12/08 , G06F11/16 , G06F12/02 , G06F11/00 , G06F11/14 , G06F11/20
CPC分类号： G06F12/0238 , G06F11/004 , G06F11/1441 , G06F11/1666 , G06F11/20 , G06F12/0871 , G06F2212/286
摘要： For cache/data management in a computing storage environment, incoming data segments into a Non Volatile Storage (NVS) device of the computing storage environment are validated against a bitmap to determine if the incoming data segments are currently in use. Those of the incoming data segments determined to be currently in use are designated to the computing storage environment to protect data integrity.

6. 发明授权

US07975169B2 Memory preserved cache to prevent data loss 失效
标题翻译：内存保存缓存以防止数据丢失
公开(公告)号：US07975169B2
公开(公告)日：2011-07-05
申请号：US12132087
申请日：2008-06-03
申请人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Alfred Emilio Sanchez , Kenneth Wayne Todd
发明人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Alfred Emilio Sanchez , Kenneth Wayne Todd
IPC分类号： G06F11/00
CPC分类号： G06F12/0804 , G06F11/1441 , G06F11/1666 , G06F11/2023 , G06F11/2038 , G06F11/2043 , G06F12/0866
摘要： A method, system, and computer program product for preserving data in a storage subsystem having dual cache and dual nonvolatile storage (NVS) through a failover from a failed cluster to a surviving cluster is provided. A memory preserved indicator is initiated to mark tracks on a cache of the surviving cluster to be preserved, the tracks having an image in an NVS of the failed cluster. A destage operation is performed to destage the marked tracks. Subsequent to a determination that each of the marked tracks have been destaged, the memory preserved indicator is disabled to remove the mark from the tracks. If the surviving cluster reboots previous to each of the marked tracks having been destaged, the cache is verified as a memory preserved cache, the marked tracks are retained for processing while all unmarked tracks are removed, and the marked tracks are processed.
摘要翻译：提供了一种用于通过从故障集群到存活集群的故障转移来保存具有双缓存和双非易失性存储（NVS）的存储子系统中的数据的方法，系统和计算机程序产品。启动存储器保存的指示符以标记要保留的存活簇的高速缓存上的轨道，轨道在故障集群的NVS中具有图像。执行了一个停船操作，以排除标记的轨迹。在确定每个标记的轨道已经停止之后，禁用存储器保留指示符以从轨道中移除标记。如果幸存的群集在已经去往每个标记的轨道之前重新启动，则将高速缓存验证为存储器保存的高速缓存，标记的轨道被保留用于处理，而所有未标记的轨道被移除，并且标记的轨道被处理。

7. 发明授权

US09733991B2 Deferred re-MRU operations to reduce lock contention 有权
公开(公告)号：US09733991B2
公开(公告)日：2017-08-15
申请号：US13616980
申请日：2012-09-14
申请人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Kenneth Wayne Todd , David Blair Whitworth
发明人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Kenneth Wayne Todd , David Blair Whitworth
IPC分类号： G06F12/12 , G06F9/52 , G06F12/0866 , G06F12/123 , G06F3/06
CPC分类号： G06F9/526 , G06F3/0659 , G06F12/0866 , G06F12/123
摘要： Data operations, requiring a lock, are batched into a set of operations to be performed on a per-core basis. A global lock for the set of operations is periodically acquired, the set of operations is performed, and the global lock is freed so as to avoid excessive duty cycling of lock and unlock operations in the computing storage environment.

8. 发明授权

US09058217B2 Preferential CPU utilization for tasks 有权
公开(公告)号：US09058217B2
公开(公告)日：2015-06-16
申请号：US13616930
申请日：2012-09-14
申请人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Trung Ngoc Nguyen
发明人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Trung Ngoc Nguyen
IPC分类号： G06F9/46 , G06F9/50
CPC分类号： G06F9/505 , G06F9/46 , G06F9/5088
摘要： A set of like tasks to be performed is organized into a first group. Upon a determined imbalance between dispatch queue depths greater than a predetermined threshold, the set of like tasks is reassigned to an additional group.

9. 发明申请

US20090300408A1 MEMORY PRESERVED CACHE FAILSAFE REBOOT MECHANISM 失效
标题翻译：内存保存缓存失败机制
公开(公告)号：US20090300408A1
公开(公告)日：2009-12-03
申请号：US12132128
申请日：2008-06-03
申请人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Alfred Emilio Sanchez , Kenneth Wayne Todd
发明人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Alfred Emilio Sanchez , Kenneth Wayne Todd
IPC分类号： G06F11/20
CPC分类号： G06F11/1417 , G06F11/2092
摘要： A method, system and computer program product for preserving data in a storage subsystem having dual cache and dual nonvolatile storage (NVS) through a failover from a failed cluster to a surviving cluster, the surviving cluster undergoing a rebooting process, is provided. A memory preserved indicator associated with a cache of the surviving cluster is detected. The memory preserved indicator designates marked tracks having an image in an NVS of the failed cluster to be preserved through the rebooting process. A counter in a data structure of the surviving cache is incremented. If a value of the counter exceeds a predetermined value, a cache memory is initialized, and the marked tracks are removed from the cache to prevent an instance of repetitive reboots caused by a corrupted structure in the cache memory.
摘要翻译：提供了一种方法，系统和计算机程序产品，用于通过从故障集群到存活集群的故障转移来保存具有双高速缓存和双非易失性存储（NVS）的存储子系统中的数据，所述存活集群经历重新启动过程。检测与存活簇的高速缓存相关联的存储器保存的指示符。存储器保存的指示符指定在通过重新启动过程保留的故障集群的NVS中具有图像的标记轨迹。幸存缓存的数据结构中的计数器增加。如果计数器的值超过预定值，则初始化高速缓冲存储器，并且从高速缓存中移除标记的轨道，以防止由高速缓冲存储器中的破坏的结构导致的重复重新启动的实例。

10. 发明申请

US20090300298A1 MEMORY PRESERVED CACHE TO PREVENT DATA LOSS 失效
标题翻译：内存保存缓存以防数据丢失
公开(公告)号：US20090300298A1
公开(公告)日：2009-12-03
申请号：US12132087
申请日：2008-06-03
申请人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Alfred Emilio Sanchez , Kenneth Wayne Todd
发明人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , Alfred Emilio Sanchez , Kenneth Wayne Todd
IPC分类号： G06F12/00
CPC分类号： G06F12/0804 , G06F11/1441 , G06F11/1666 , G06F11/2023 , G06F11/2038 , G06F11/2043 , G06F12/0866
摘要： A method, system, and computer program product for preserving data in a storage subsystem having dual cache and dual nonvolatile storage (NVS) through a failover from a failed cluster to a surviving cluster is provided. A memory preserved indicator is initiated to mark tracks on a cache of the surviving cluster to be preserved, the tracks having an image in an NVS of the failed cluster. A destage operation is performed to destage the marked tracks. Subsequent to a determination that each of the marked tracks have been destaged, the memory preserved indicator is disabled to remove the mark from the tracks. If the surviving cluster reboots previous to each of the marked tracks having been destaged, the cache is verified as a memory preserved cache, the marked tracks are retained for processing while all unmarked tracks are removed, and the marked tracks are processed.
摘要翻译：提供了一种用于通过从故障集群到存活集群的故障转移来保存具有双缓存和双非易失性存储（NVS）的存储子系统中的数据的方法，系统和计算机程序产品。启动存储器保存的指示符以标记要保留的存活簇的高速缓存上的轨道，轨道在故障集群的NVS中具有图像。执行了一个停船操作，以排除标记的轨迹。在确定每个标记的轨道已经停止之后，禁用存储器保留指示符以从轨道中移除标记。如果幸存的群集在已经去往每个标记的轨道之前重新启动，则将高速缓存验证为存储器保存的高速缓存，标记的轨道被保留用于处理，而所有未标记的轨道被移除，并且标记的轨道被处理。

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