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1. 发明申请

US20190114217A1 CORRUPT LOGICAL BLOCK ADDRESSING RECOVERY SCHEME 审中-公开
公开(公告)号：US20190114217A1
公开(公告)日：2019-04-18
申请号：US15782119
申请日：2017-10-12
申请人： International Business Machines Corporation
发明人： Roman A. Pletka , Timothy J. Fisher , Robert E. Galbraith , Kevin E. Sallese , Christopher M. Dennett
IPC分类号： G06F11/07 , G11B20/18 , G06F11/10
CPC分类号： G06F11/073 , G06F11/1016 , G06F11/1072 , G06F11/108 , G11B20/18
摘要： Technology for handling page size mismatches when DPL-CLR is performed at multiple levels of a data storage system (for example, RAID level and flash card level). A “corrective DPL” corrects only a portion of the data that would make up a page at the level at which the data is stored (that is, the “initial DPL level”), and, after that, a partially corrected page of data is formed and stored in data storage, with the partially corrected page: (i) having a page size characteristic of the initial DPL; (ii) including the part of the data corrected by the corrective DPL; and (iii) further including other data. In some embodiments, the other data has a pattern that indicates that it is invalid, erroneous data, such that an error message will be returned if this portion of the data is attempted to be read.

2. 发明授权

US10445016B2 Techniques for storage command processing 有权
公开(公告)号：US10445016B2
公开(公告)日：2019-10-15
申请号：US15376835
申请日：2016-12-13
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人： Shawn P. Authement , Kevin A. Bosien , Christopher M. Dennett , David E. Mullen
IPC分类号： G06F3/06
摘要： A technique for handling storage commands includes receiving, by an interface node of a data storage system, a first storage command. The interface node determines whether the first storage command is a head of queue (HOQ) command. In response to determining the first storage command is an HOQ command, the interface node increments a constrained command count and issues the first storage command to a first worker processor core for processing. In response to determining the first storage command is not an HOQ command, the interface node processes the first storage command as a non-HOQ command.

3. 发明授权

US11372555B2 Reconstructing data in a smart storage array 有权
公开(公告)号：US11372555B2
公开(公告)日：2022-06-28
申请号：US16750723
申请日：2020-01-23
申请人： International Business Machines Corporation
发明人： Asaf Porat-Stoler , Constantine Gavrilov , Christopher M. Dennett , Rivka Mayraz Matosevich , Sergey Marenkov , Jonathan Fischer-Toubol , Afief Halumi
IPC分类号： G06F11/07 , G06F3/06 , G06F11/20 , G06F11/10
摘要： A method and system may reconstruct data in a smart storage array where upon detection of data inconsistency, an application of the system is notified and affected data strips are rebuilt. When an initiator detects stripe corruption, the initiator may report the strip corruption to storage. The storage may lock the strip for I/O operations. Initiators may determine recovery scenarios for rebuilding the data strips and send the scenarios to storage. At storage, initiator replies may be collected, and a rebuild option with the highest votes may be automatically determined for a reconstruction operation. Once the reconstruction operation is completed, the rebuilt stripe may be unlocked and data operations may recommence.

4. 发明申请

US20150169254A1 FIRMWARE BYPASS FOR MEDIUM-ACCESS COMMANDS 有权
标题翻译：中型访问命令的固件旁路
公开(公告)号：US20150169254A1
公开(公告)日：2015-06-18
申请号：US14106890
申请日：2013-12-16
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人： Shawn P. Authement , Christopher M. Dennett , Gowrisankar Radhakrishnan , Donald J. Ziebarth
IPC分类号： G06F3/06
CPC分类号： G06F3/0659 , G06F3/0604 , G06F3/0679 , G06F2003/0697
摘要： An interface receives a command corresponding to a non-volatile memory. The interface determines whether a bypass mode is enabled and whether the command is a medium-access command. A primary processing node processes the command in response to determining at least one of the following: that the bypass mode is disabled or that the command is not a medium-access command. A secondary processing node processes the command, in response to determining that the bypass mode is enabled and that the command is a medium-access command.
摘要翻译：接口接收与非易失性存储器对应的命令。该接口确定旁路模式是否使能，以及该命令是否是中等访问命令。主处理节点响应于确定以下中的至少一个来处理该命令：旁路模式被禁用或者该命令不是中等访问命令。响应于确定旁路模式被使能并且该命令是中等访问命令，辅助处理节点处理该命令。

5. 发明授权

US10552243B2 Corrupt logical block addressing recovery scheme 有权
公开(公告)号：US10552243B2
公开(公告)日：2020-02-04
申请号：US15782119
申请日：2017-10-12
申请人： International Business Machines Corporation
发明人： Roman A. Pletka , Timothy J. Fisher , Robert E. Galbraith , Kevin E. Sallese , Christopher M. Dennett
IPC分类号： G06F11/00 , G06F11/07 , G06F11/10 , G11B20/18
摘要： Technology for handling page size mismatches when DPL-CLR is performed at multiple levels of a data storage system (for example, RAID level and flash card level). A “corrective DPL” corrects only a portion of the data that would make up a page at the level at which the data is stored (that is, the “initial DPL level”), and, after that, a partially corrected page of data is formed and stored in data storage, with the partially corrected page: (i) having a page size characteristic of the initial DPL; (ii) including the part of the data corrected by the corrective DPL; and (iii) further including other data. In some embodiments, the other data has a pattern that indicates that it is invalid, erroneous data, such that an error message will be returned if this portion of the data is attempted to be read.

6. 发明授权

US09798493B2 Firmware bypass for medium-access commands 有权
公开(公告)号：US09798493B2
公开(公告)日：2017-10-24
申请号：US14106890
申请日：2013-12-16
申请人： International Business Machines Corporation
发明人： Shawn P. Authement , Christopher M. Dennett , Gowrisankar Radhakrishnan , Donald J. Ziebarth
IPC分类号： G06F3/06
CPC分类号： G06F3/0659 , G06F3/0604 , G06F3/0679 , G06F2003/0697
摘要： An interface receives a command corresponding to a non-volatile memory. The interface determines whether a bypass mode is enabled and whether the command is a medium-access command. A primary processing node processes the command in response to determining at least one of the following: that the bypass mode is disabled or that the command is not a medium-access command. A secondary processing node processes the command, in response to determining that the bypass mode is enabled and that the command is a medium-access command.

7. 发明授权

US09454433B2 Adaptive rebuild scheduling scheme 有权
公开(公告)号：US09454433B2
公开(公告)日：2016-09-27
申请号：US14301641
申请日：2014-06-11
申请人： International Business Machines Corporation
发明人： Christopher M. Dennett , Farnaz Toussi
IPC分类号： G06F11/00 , G06F11/10
CPC分类号： G06F11/1092 , G06F11/108
摘要： Method and apparatus for redundant array of independent disks (RAID) recovery are disclosed. In one embodiment, a RAID controller schedules requests to rebuild failed drives based on the wear state of secondary drives and input/output (I/O) activity. The controller may be configured to assign higher scheduling priority to rebuild requests only when necessary, so as to reduce the time needed for the rebuild and to avoid affecting performance of the RAID system. In particular, the controller may give higher priority to rebuild requests if secondary drive failure is likely. In addition, the controller may determine when write-intensive periods occur, and assign lower priority to rebuild requests during such periods.

8. 发明授权

US09396068B2 Adaptive rebuild scheduling scheme 有权
标题翻译：自适应重建调度方案
公开(公告)号：US09396068B2
公开(公告)日：2016-07-19
申请号：US14255010
申请日：2014-04-17
申请人： International Business Machines Corporation
发明人： Christopher M. Dennett , Farnaz Toussi
IPC分类号： G06F11/00 , G06F11/10
CPC分类号： G06F11/1092 , G06F11/108
摘要： Method and apparatus for redundant array of independent disks (RAID) recovery are disclosed. In one embodiment, a RAID controller schedules requests to rebuild failed drives based on the wear state of secondary drives and input/output (I/O) activity. The controller may be configured to assign higher scheduling priority to rebuild requests only when necessary, so as to reduce the time needed for the rebuild and to avoid affecting performance of the RAID system. In particular, the controller may give higher priority to rebuild requests if secondary drive failure is likely. In addition, the controller may determine when write-intensive periods occur, and assign lower priority to rebuild requests during such periods.
摘要翻译：披露了独立磁盘（RAID）恢复冗余阵列的方法和装置。在一个实施例中，RAID控制器基于次级驱动器的磨损状态和输入/输出（I / O）活动来调度请求以重建故障驱动器。控制器可以被配置为仅在必要时分配更高的调度优先级来重建请求，以便减少重建所需的时间并避免影响RAID系统的性能。特别地，如果二次驱动器故障可能，则控制器可以给予更高的优先级来重建请求。此外，控制器可以确定写密集时段何时发生，并且在这样的时段期间分配较低的优先级来重建请求。

9. 发明申请

US20150301894A1 ADAPTIVE REBUILD SCHEDULING SCHEME 有权
公开(公告)号：US20150301894A1
公开(公告)日：2015-10-22
申请号：US14255010
申请日：2014-04-17
申请人： International Business Machines Corporation
发明人： Christopher M. Dennett , Farnaz Toussi
IPC分类号： G06F11/10
CPC分类号： G06F11/1092 , G06F11/108
摘要： Method and apparatus for redundant array of independent disks (RAID) recovery are disclosed. In one embodiment, a RAID controller schedules requests to rebuild failed drives based on the wear state of secondary drives and input/output (I/O) activity. The controller may be configured to assign higher scheduling priority to rebuild requests only when necessary, so as to reduce the time needed for the rebuild and to avoid affecting performance of the RAID system. In particular, the controller may give higher priority to rebuild requests if secondary drive failure is likely. In addition, the controller may determine when write-intensive periods occur, and assign lower priority to rebuild requests during such periods.

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