公开(公告)号：US11182081B2

公开(公告)日：2021-11-23

申请号：US16123457

申请日：2018-09-06

申请人： International Business Machines Corporation

发明人： Theresa M. Brown ,  Nedlaya Y. Francisco ,  Nicolas M. Clayton ,  Mark L. Lipets ,  Carol S. Mellgren ,  Gregory E. McBride ,  David Fei ,  Kevin Lin

IPC分类号： G06F3/06 ,  G06F12/0802

摘要： Provided are techniques for performing a recovery copy command to restore a safeguarded copy backup to a production volume. In response to receiving a recovery copy command, a production target data structure is created. A read operation is received for data for a storage location. In response to determining that the data for the storage location is in a cache of a host and a generation number is greater than a recovery generation number, the data is read from the cache. In response to determining at least one of that the data for the storage location is not in the cache and that the generation number is not greater than the recovery generation number, the data is read from one of the production volume and a backup volume based on a value of an indicator for the storage location in the production target data structure.

公开(公告)号：US11042491B2

公开(公告)日：2021-06-22

申请号：US14071529

申请日：2013-11-04

申请人： International Business Machines Corporation

发明人： Theresa M. Brown ,  Nedlaya Y. Francisco ,  Suguang Li ,  Beth A. Peterson

IPC分类号： G06F12/00 ,  G06F12/16 ,  G06F11/14

摘要： A request is received to perform a point in time copy operation from a source volume to a space efficient target volume. A controller copies data stored in a group of data storage units, from the source volume to a non-volatile storage, to preserve the point in time copy operation. A background process asynchronously copies the data from the non-volatile storage to the space efficient target volume to commit a physical point in time copy of the data from the source volume to the target volume.

公开(公告)号：US20200081629A1

公开(公告)日：2020-03-12

申请号：US16123457

申请日：2018-09-06

申请人： International Business Machines Corporation

发明人： Theresa M. Brown ,  Nedlaya Y. Francisco ,  Nicolas M. Clayton ,  Mark L. Lipets ,  Carol S. Mellgren ,  Gregory E. McBride ,  David Fei ,  Kevin Lin

IPC分类号： G06F3/06 ,  G06F12/0802

摘要： Provided are techniques for performing a recovery copy command to restore a safeguarded copy backup to a production volume. In response to receiving a recovery copy command, a production target data structure is created. A read operation is received for data for a storage location. In response to determining that the data for the storage location is in a cache of a host and a generation number is greater than a recovery generation number, the data is read from the cache. In response to determining at least one of that the data for the storage location is not in the cache and that the generation number is not greater than the recovery generation number, the data is read from one of the production volume and a backup volume based on a value of an indicator for the storage location in the production target data structure.

公开(公告)号：US20200019542A1

公开(公告)日：2020-01-16

申请号：US16581564

申请日：2019-09-24

申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION

发明人： Theresa M. Brown ,  Nedlaya Y. Francisco ,  Suguang Li ,  Mark L. Lipets ,  Gregory E. McBride ,  Carol S. Mellgren ,  Raul E. Saba

IPC分类号： G06F16/23 ,  G06F16/27

摘要： Provided are a computer program product, system, and method for updating change information for current copy relationships when establishing a new copy relationship having overlapping data with the current copy relationships. A first copy relationship indicates changed first source data to copy to first target data. An establish request is processed to create a second copy relationship to copy second source data in to second target data. A second copy relationship is generated, in response to the establish request, indicating data in the second source data to copy to the second target data. A determination is made of overlapping data units in the first source data also in the second target data. Indication is made in the first copy relationship to copy the overlapping data units. The first source data indicated in the first copy relationship is copied to the first target data, including data for the overlapping data units.

公开(公告)号：US20190034286A1

公开(公告)日：2019-01-31

申请号：US15663727

申请日：2017-07-29

申请人： International Business Machines Corporation

发明人： Theresa M. Brown ,  Nicolas M. Clayton ,  Joshua J. Crawford ,  Nedlaya Y. Francisco ,  Theodore T. Harris, JR. ,  Gregory E. McBride ,  Carol S. Mellgren ,  Damian Trujillo ,  Matthew J. Ward

IPC分类号： G06F11/14 ,  G06F3/06

摘要： One general aspect of asynchronous local and remote generation of consistent point-in-time snap copies in consistency groups in accordance with the present description, is directed to receiving a local-remote pair point-in-time snap copy establish command to establish a local point-in-time snap copy in a local data storage system, and a remote point-in-time snap copy in a remote data storage system. In one aspect, establishment of the remote point-in-time snap copy relationship may be delayed as a function of the state of a consistency group formation process upon receipt of the local-remote pair point-in-time snap copy establish command. As a result, consistency of the local-remote pair of point-in-time snap copies may be realized, notwithstanding an asynchronous relationship between the local and remote storage systems. Other features and aspects may be realized, depending upon the particular application.

公开(公告)号：US20180157430A1

公开(公告)日：2018-06-07

申请号：US15372192

申请日：2016-12-07

申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION

发明人： Theresa M. Brown ,  Nedlaya Y. Francisco ,  Suguang Li ,  Mark L. Lipets ,  Gregory E. McBride ,  Carol S. Mellgren ,  Raul E. Saba

IPC分类号： G06F3/06

CPC分类号： G06F3/0619 ,  G06F3/0646 ,  G06F3/0647 ,  G06F3/065 ,  G06F3/0683 ,  G06F11/1446 ,  G06F11/1448 ,  G06F11/1458 ,  G06F11/1469

摘要： Provided are a computer program product, system, and method for using a cascade flag to process a copy relationship having a backward cascade copy relationship. Each of a plurality of copy relationships indicates to copy source data to target data and has a cascade flag. The cascade flag for a forward copy relationship of the copy relationships is set to a first value in response to determining that the source data for the forward copy relationship comprises target data for a backward copy relationship and that a background copy operation specified to copy source data to target data of the backward copy relationship has not completed. The cascade flag for the forward copy relationship is set to a second value in response to determining that the backward copy relationship does not have an uncompleted background copy operation.

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.

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。

公开(公告)号：US20150378832A1

公开(公告)日：2015-12-31

申请号：US14314036

申请日：2014-06-25

申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION

发明人： Theresa M. Brown ,  Susan K. Candelaria ,  Nedlaya Y. Francisco ,  Lisa J. Gundy ,  Corey G. Smeaton ,  Warren K. Stanley ,  Jeffrey R. Suarez

IPC分类号： G06F11/14

CPC分类号： G06F3/0619 ,  G06F3/06 ,  G06F3/065 ,  G06F3/067 ,  G06F11/1451 ,  G06F11/2058 ,  G06F11/2071 ,  G06F2201/84

摘要： Provided are a computer program product, system, and method for performing a remote point-in-time copy to a source and target storages in further mirror copy relationships. Each of a plurality of source copy relationships is from the source storage to one corresponding source copy storage. Each of a plurality of target copy relationships is from the target storage to one corresponding target copy storage, where in each relationship an indicator indicates whether to use a remote first type copy operation. The first type copy operation is used to copy data from the source storage to the target storage and copy data from the source copy storage to the target copy storage for the determined source and target copy relationships having the indicator set. A second type of copy operations is used for source and target relationships not having the indicator set.

摘要翻译： 提供了一种用于在进一步的镜像复制关系中执行到源和目标存储的远程时间点副本的计算机程序产品，系统和方法。 多个源拷贝关系中的每一个从源存储器到一个对应的源拷贝存储器。 多个目标复制关系中的每一个都是从目标存储器到一个对应的目标拷贝存储器，其中在每个关系中指示符指示是否使用远程第一类型复制操作。 第一类型复制操作用于将数据从源存储器复制到目标存储器，并将数据从源拷贝存储器复制到目标拷贝存储器，以确定具有指示符集的确定的源和目标拷贝关系。 第二种类型的复制操作用于没有指示符集的源和目标关系。

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。