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1. 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.

2. 发明授权

US08832379B2 Efficient cache volume SIT scans 有权
标题翻译：高效缓存卷SIT扫描
公开(公告)号：US08832379B2
公开(公告)日：2014-09-09
申请号：US13617130
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
CPC分类号： G06F12/0895 , G06F12/0802 , G06F12/0871 , G06F2212/462
摘要： A processor, operable in a computing storage environment, allocates portions of a Scatter Index Table (SIT) disproportionately between a larger portion dedicated for meta data tracks, and a smaller portion dedicated for user data tracks, and processes a storage operation through the disproportionately allocated portions of the SIT using an allocated number of Task Control Blocks (TCB).
摘要翻译：一种在计算存储环境中可操作的处理器，在专用于元数据轨道的较大部分和专用于用户数据轨道的较小部分之间不成比例地分配分散索引表（SIT）的部分，并且通过不成比例地分配使用分配数量的任务控制块（TCB）的部分SIT。

3. 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.

4. 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。

5. 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.

6. 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。

7. 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。

8. 发明授权

US08719504B2 Efficient processing of cache segment waiters 失效
公开(公告)号：US08719504B2
公开(公告)日：2014-05-06
申请号：US13616902
申请日：2012-09-14
申请人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , David Blair Whitworth
发明人： Kevin John Ash , Michael Thomas Benhase , Lokesh Mohan Gupta , David Blair Whitworth
IPC分类号： G06F12/00 , G06F9/46
CPC分类号： G06F12/0871 , G06F12/0804 , G06F12/0855 , G06F12/0866 , G06F12/0868 , G06F12/0877 , G06F13/4068 , G06F13/4221 , G06F2212/462 , G06F2212/603 , G06F2212/604
摘要： For a plurality of input/output (I/O) operations waiting to assemble complete data tracks from data segments, a process, separate from a process responsible for the data assembly into the complete data tracks, is initiated for waking a predetermined number of the waiting I/O operations. A total number of I/O operations to be awoken at each of an iterated instance of the waking is limited.

9. 发明授权

US07895465B2 Memory preserved cache failsafe reboot mechanism 失效
标题翻译：内存保存缓存失效安全重启机制
公开(公告)号：US07895465B2
公开(公告)日：2011-02-22
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： G06F11/00
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，所述经历重新启动过程的存活集群。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

US20080250210A1 COPYING DATA FROM A FIRST CLUSTER TO A SECOND CLUSTER TO REASSIGN STORAGE AREAS FROM THE FIRST CLUSTER TO THE SECOND CLUSTER 有权
标题翻译：将数据从第一集群复制到第二集群以将存储区域从第一集群转发到第二集群
公开(公告)号：US20080250210A1
公开(公告)日：2008-10-09
申请号：US11696099
申请日：2007-04-03
申请人： Kevin John Ash , Lokesh Mohan Gupta , Steven Robert Lowe , Alfred Emilio Sanchez , Kenneth Wayne Todd
发明人： Kevin John Ash , Lokesh Mohan Gupta , Steven Robert Lowe , Alfred Emilio Sanchez , Kenneth Wayne Todd
IPC分类号： G06F12/00
CPC分类号： G06F12/0873 , G06F11/2033 , G06F11/2046 , G06F11/2097 , G06F2212/284
摘要： Provided are a method, system, and article of manufacture for copying data from a first cluster to a second cluster to reassign storage areas from the first cluster to the second cluster. An operation is initiated to reassign storage areas from a first cluster to a second cluster, wherein the first cluster includes a first cache and a first storage unit and the second cluster includes a second cache and a second storage unit. Data in the first cache for the storage areas to reassign to the second cluster is copied to the second cache. Data in the first storage unit for storage areas remaining assigned to the first cluster is copied to the second storage unit.
摘要翻译：提供了用于将数据从第一集群复制到第二集群的方法，系统和制品，以将从第一集群到第二集群的存储区域重新分配。启动操作以将存储区域从第一集群重新分配到第二集群，其中第一集群包括第一高速缓存和第一存储单元，并且第二集群包括第二高速缓存和第二存储单元。将第一个缓存中的数据重新分配给第二个集群的存储区域复制到第二个缓存。第一存储单元中的剩余分配给第一集群的存储区域的数据被复制到第二存储单元。

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