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91. 发明申请

US20180137017A1 COPYING DATA FROM MULTIPLE POINT-IN-TIME COPIES TO A LOG STORAGE TO USE TO ROLL-BACK A SOURCE STORAGE 审中-公开
公开(公告)号：US20180137017A1
公开(公告)日：2018-05-17
申请号：US15354952
申请日：2016-11-17
申请人： International Business Machines Corporation
发明人： Theresa M. Brown , Nicolas M. Clayton , Gregory E. McBride , Carol S. Mellgren , David C. Reed
IPC分类号： G06F11/14
CPC分类号： G06F11/1448 , G06F11/1471 , G06F2201/84
摘要： Provided are a computer program product, system, and method for copying data from multiple point-in-time copies to a log storage to use to roll-back a source storage managing point-in-time copies of a source storage. A plurality of point-in-time copies of a source storage at different point-in-times are established. In response to receiving writes to the source storage after establishing each of the point-in-time copies, point-in-time data in the source storage is copied, before being updated by the received writes, to a log storage, wherein the log storage stores point-in-time data for multiple of the point-in-time copies. The log storage is used to roll-back the source storage to a selected point-in-time of one of the point-in-time copies.

92. 发明申请

US20180137016A1 USING A FORWARD LOG STORAGE AND BACKWARD LOG STORAGE TO RECOVER A STORAGE TO A FORWARD OR BACKWARD POINT-IN-TIME 审中-公开
公开(公告)号：US20180137016A1
公开(公告)日：2018-05-17
申请号：US15354949
申请日：2016-11-17
申请人： International Business Machines Corporation
发明人： Theresa M. Brown , Nicolas M. Clayton , Gregory E. McBride , Carol S. Mellgren , David C. Reed
IPC分类号： G06F11/14
CPC分类号： G06F11/1469 , G06F11/1471 , G06F2201/84
摘要： Provided are a computer program product, system, and method for using a forward log storage and backward log storage to recover a storage to a forward or backward point-in-time. In response to receiving writes to source data after establishing point-in-time copies, point-in-time data of the source data is copied to a backward log storage storing point-in-time data for multiple of the point-in-time copies. The point-in-time data in the backward log storage is applied to a recovery source data to roll-back the source data to a backward point-in-time of one of the point-in-time copies. Before applying the point-in-time data from the backward log storage, point-in-time data in the recovery source data, is copied to a forward log storage. The point-in-time data in the forward log storage is applied to the recovery source data to roll forward the recovery source data to a forward point-in-time subsequent to the backward point-in-time.

93. 发明申请

US20170206158A1 SPACE RECLAMATION IN SPACE-EFFICIENT SECONDARY VOLUMES 审中-公开
公开(公告)号：US20170206158A1
公开(公告)日：2017-07-20
申请号：US14997702
申请日：2016-01-18
申请人： International Business Machines Corporation
发明人： Theresa M. Brown , Gregory E. McBride , Carol S. Mellgren , David C. Reed
IPC分类号： G06F12/02
CPC分类号： G06F12/0253 , G06F9/52 , G06F12/023 , G06F12/126 , G06F2212/1044
摘要： A method for releasing storage space in a space-efficient secondary volume includes placing a first lock on a free-space data structure stored on the space-efficient secondary volume. The method reads a copy of the free-space data structure into memory while the first lock is in place, and releases the first lock. The method then analyzes the copy to determine which storage elements in the space-efficient secondary volume are not being used. The method then places a second lock on the free-space data structure and, while the second lock is in place, analyzes the free-space data structure to determine which storage elements had their usage status change during analysis of the copy. The method then releases storage elements in the space-efficient secondary volume that are not being used and releases the second lock. A corresponding system and computer program product are also disclosed.

94. 发明授权

US09594511B2 Cascaded, point-in-time-copy architecture with data deduplication 有权
标题翻译：具有数据重复数据删除的级联，时间点复制体系结构
公开(公告)号：US09594511B2
公开(公告)日：2017-03-14
申请号：US14685024
申请日：2015-04-13
申请人： International Business Machines Corporation
发明人： Michael T. Benhase , Theresa M. Brown , Lokesh M. Gupta , Carol S. Mellgren
IPC分类号： G06F12/00 , G06F3/06 , G06F12/02 , G06F17/30 , H04L29/08
CPC分类号： G06F3/0608 , G06F3/0613 , G06F3/0619 , G06F3/0641 , G06F3/0647 , G06F3/065 , G06F3/0655 , G06F3/067 , G06F12/02 , G06F17/3015 , G06F2201/84 , H04L67/1097
摘要： A method for performing a write to a volume x in a cascaded architecture is described. In one embodiment, such a method includes determining whether the volume x has a child volume, wherein each of the volume x and the child volume have a target bit map (TBM) associated therewith. The method then determines whether the TBMs of both the volume x and the child volume are set. If the TBMs are set, the method finds a higher source (HS) volume from which to copy the desired data to the child volume. Finding the HS volume includes comparing ages of mapping relationships upstream from the volume x in order to determine a source of the data. Once the HS volume is found, the method copies the data from the HS volume to the child volume and performs the write to the volume x. A method for performing a read is also disclosed herein.
摘要翻译：描述了用于对级联架构中的卷x进行写入的方法。在一个实施例中，这种方法包括确定卷x是否具有子卷，其中卷x和子卷中的每一个都具有与其相关联的目标比特图（TBM）。然后，该方法确定是否设置了卷x和子卷的TBM。如果设置了TBM，则该方法将找到更高的源（HS）卷，从该卷将所需数据复制到子卷。查找HS卷包括比较卷x上游的映射关系的年龄，以便确定数据的来源。找到HS卷后，该方法将数据从HS卷复制到子卷，并对卷x进行写入。本文还公开了一种用于执行读取的方法。

95. 发明授权

US09483366B2 Bitmap selection for remote copying of updates 有权
公开(公告)号：US09483366B2
公开(公告)日：2016-11-01
申请号：US14746645
申请日：2015-06-22
申请人： International Business Machines Corporation
发明人： Theresa M. Brown , Nedlaya Y. Francisco , Theodore T. Harris, Jr. , Suguang Li , Mark L. Lipets , Carol S. Mellgren , Raul E. Saba , Alfred E. Sanchez , Warren K. Stanley
IPC分类号： G06F11/00 , G06F11/14 , G06F17/30 , G06F3/06 , G06F11/20 , H04L29/08 , G06F11/07
CPC分类号： G06F11/1464 , G06F3/0619 , G06F3/065 , G06F3/0683 , G06F11/004 , G06F11/0751 , G06F11/1451 , G06F11/1469 , G06F11/2074 , G06F17/30194 , H04L67/1095 , H04L67/1097
摘要： In one embodiment of the present description, a copy relationship is established between a storage location at a first site and a storage location at a second site in a data storage system, wherein a dynamically assignable bitmap preset to one of a plurality of different predetermined bit patterns is selected as a function of both the availability of the selected bitmap and the type of predetermined bit pattern identified for the selected bitmap. The selected bitmap may be assigned as an out-of-sync bitmap wherein updates to the storage location at one site, which are to be copied to the storage location at the other site, are indicated in the selected bitmap, and data writes being written to the storage location at the one site, are copied to the storage location at the other site, using the selected bitmap as an out-of-sync bitmap. Other aspects are described.

96. 发明申请

US20160232102A1 EFFICIENT MULTI-THREADED JOURNAL SPACE RECLAMATION 有权
标题翻译：有效的多线程日期空间恢复
公开(公告)号：US20160232102A1
公开(公告)日：2016-08-11
申请号：US14616668
申请日：2015-02-07
申请人： International Business Machines Corporation
发明人： Kevin J. Ash , Lokesh M. Gupta , Carol S. Mellgren , Alfred E. Sanchez
IPC分类号： G06F12/08
CPC分类号： G06F12/0802 , G06F3/0689 , G06F12/0804 , G06F12/0873 , G06F12/12 , G06F12/123 , G06F12/126 , G06F2212/1041
摘要： A method for more efficiently reclaiming space in a journal is disclosed. In one embodiment, such a method includes identifying a plurality of ranks in a storage system. The method creates a destage wait list for each rank, where the destage wait list identifies metadata tracks to destage from a cache to the corresponding rank. The method dispatches one or more threads for each destage wait list. The threads destage metadata tracks identified in the destage wait lists from the cache to the corresponding ranks. In certain embodiments, the method moves metadata tracks to the destage wait lists only if performing such will not cause occupied space in the journal to fall below a low watermark. Once metadata tracks are destaged from the cache, the method releases, from the journal, entries associated with the destaged metadata tracks. A corresponding system and computer program product are also disclosed.
摘要翻译：公开了一种在日志中更有效地回收空间的方法。在一个实施例中，这种方法包括识别存储系统中的多个等级。该方法为每个等级创建一个等待时间表，其中，该等待时间表将元数据轨迹从高速缓存中标记为相应的等级。该方法为每个到期等待列表分派一个或多个线程。这些线程将从缓存等待列表中标识的元数据跟踪缓存到相应的等级。在某些实施例中，该方法仅在执行这样的操作时将元数据轨迹移动到目的地等待列表才能使得日志中的占用空间低于低水印。一旦元数据跟踪从缓存中移出，该方法将从日志中释放与已删除的元数据轨迹关联的条目。还公开了相应的系统和计算机程序产品。

97. 发明授权

US09405704B2 Establishing a point-in-time copy relationship between source logical addresses and target logical addresses 有权
标题翻译：在源逻辑地址和目标逻辑地址之间建立时间点复制关系
公开(公告)号：US09405704B2
公开(公告)日：2016-08-02
申请号：US13653342
申请日：2012-10-16
申请人： International Business Machines Corporation
发明人： Theresa M. Brown , Carol S. Mellgren , Nedlaya Y. Francisco , Jared M. Minch , Raul E. Saba
IPC分类号： G06F12/00 , G06F12/10 , G06F11/14
CPC分类号： G06F11/1451 , G06F11/1456 , G06F11/1458 , G06F11/1466 , G06F2212/1032 , G06F2212/152
摘要： Provided are a computer program product, system, and method for establishing a point-in-time copy relationship between source logical addresses and target logical addresses. A point-in-time (PiT) copy establish command specifies a source set comprising a subset of source logical addresses in at least one storage and a target set comprising a subset of target logical addresses in the at least one storage. The source set of source logical addresses are copied to the target set of target logical addresses. The source logical addresses map to source tracks and wherein the target logical addresses map to target tracks. Copy information is generated indicating whether the source logical addresses in the source set have been copied to the target set. Complete is returned to the PiT copy establish command after generating the copy information and before copying all the source logical addresses to the target logical addresses.
摘要翻译：提供了一种用于在源逻辑地址和目标逻辑地址之间建立时间点复制关系的计算机程序产品，系统和方法。时间点（PiT）复制建立命令指定包括至少一个存储器中的源逻辑地址的子集的源集合和包括至少一个存储器中的目标逻辑地址的子集的目标集合。源逻辑地址的源集合被复制到目标逻辑地址的目标集合。源逻辑地址映射到源轨道，并且其中目标逻辑地址映射到目标轨道。生成复制信息，指示源集合中的源逻辑地址是否已被复制到目标集。在生成复制信息之后，将所有源逻辑地址复制到目标逻辑地址之前，完成返回到PiT copy建立命令。

98. 发明授权

US09251230B2 Exchanging locations of an out of synchronization indicator and a change recording indicator via pointers 有权
标题翻译：通过指针交换不同步指示灯和更改记录指示灯的位置
公开(公告)号：US09251230B2
公开(公告)日：2016-02-02
申请号：US13654041
申请日：2012-10-17
申请人： International Business Machines Corporation
发明人： Theresa M. Brown , Theodore T. Harris, Jr. , Mark L. Lipets , Carol S. Mellgren
IPC分类号： G06F17/30 , G06F11/20 , G06F11/14
CPC分类号： G06F17/30575 , G06F11/1446 , G06F11/2082 , G06F17/30174
摘要： A first data structure stores indications of storage locations that need to be copied for forming a consistency group. A second data structure stores indications of new host writes, subsequent to starting a point in time copy operation to form the consistency group. Locations of the first data structure and the second data structure are exchanged, subsequent to the consistency group being formed successfully.
摘要翻译：第一数据结构存储需要复制以形成一致性组的存储位置的指示。第二个数据结构存储新的主机写入的指示，在启动时间点复制操作之后形成一致性组。第一数据结构和第二数据结构的位置在成功地形成一致性组之后被交换。

99. 发明申请

US20150339074A1 ASSIGNING DEVICE ADAPTORS TO USE TO COPY SOURCE EXTENTS TO TARGET EXTENTS IN A COPY RELATIONSHIP 有权
公开(公告)号：US20150339074A1
公开(公告)日：2015-11-26
申请号：US14817082
申请日：2015-08-03
申请人： International Business Machines Corporation
发明人： Michael T. Benhase , Theresa M. Brown , Lokesh M. Gupta , Carol S. Mellgren
IPC分类号： G06F3/06 , G06F11/14
CPC分类号： G06F3/065 , G06F3/0617 , G06F3/0619 , G06F3/0631 , G06F3/0665 , G06F3/067 , G06F3/0689 , G06F11/1448 , G06F11/1456 , G06F11/1466
摘要： Provided are a computer program product, system, and method for assigning device adaptors to use to copy source extents in source ranks to target extents in target ranks in a copy relation. A determination is made of an order of the target ranks in the copy relation. Target ranks in the copy relation are selected according to the determined order. For each selected target rank, indication is made in a device adaptor assignment data structure of a source device adaptor and target device adaptor of the device adaptors to use to copy the source rank to the selected target rank indicated in the copy relation, wherein indication is made for the selected target ranks according to the determined order. The source ranks are copied to the selected target ranks using the source and target device adaptors indicated in the device adaptor assignment data structure.

100. 发明授权

US09135121B2 Managing updates and copying data in a point-in-time copy relationship expressed as source logical addresses and target logical addresses 有权
标题翻译：以时间点复制关系管理更新和复制数据，表示为源逻辑地址和目标逻辑地址
公开(公告)号：US09135121B2
公开(公告)日：2015-09-15
申请号：US13653349
申请日：2012-10-16
申请人： International Business Machines Corporation
发明人： Theresa M. Brown , Nedlaya Y. Francisco , Carol S. Mellgren , Jared M. Minch , Raul E. Saba
IPC分类号： G06F12/00 , G06F11/14
CPC分类号： G06F3/0619 , G06F3/065 , G06F3/067 , G06F11/1451 , G06F11/1458 , G06F11/1466
摘要： Provided are a computer program product, system, and method for managing updates and copying data in a point-in-time copy relationship expressed as source logical addresses and target logical addresses. A copy relationship indicates a source set of a subset of source logical addresses to copy to a target set comprising a subset of target logical addresses. An update is received to a source logical address that has not been copied. Determinations are made of the target logical address corresponding to the source logical address to be updated according to the copy relationship, a target group of target logical addresses in the target set that include the determined target logical address, and the source logical addresses in the source set that correspond to the target logical addresses in the target group. The determined source logical addresses are copied to the target logical addresses in the determined target group.
摘要翻译：提供了一种用于以时间点复制关系来管理更新和复制数据的计算机程序产品，系统和方法，其表示为源逻辑地址和目标逻辑地址。复制关系指示要复制到包括目标逻辑地址的子集的目标集合的源逻辑地址的子集的源集合。接收到未被复制的源逻辑地址的更新。根据复制关系确定与要更新的源逻辑地址对应的目标逻辑地址，包括确定的目标逻辑地址的目标集合中的目标逻辑地址的目标组和源中的源逻辑地址设置为与目标组中的目标逻辑地址相对应。所确定的源逻辑地址被复制到所确定的目标组中的目标逻辑地址。

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