公开(公告)号：US20160154608A1

公开(公告)日：2016-06-02

申请号：US15015311

申请日：2016-02-04

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Oren LI-ON ,  Orit NISSAN-MESSING ,  Assaf NITZAN ,  Eyal PEREK

IPC: G06F3/06 ,  G06F13/10

CPC classification number: G06F3/0653 ,  G06F3/061 ,  G06F3/0613 ,  G06F3/0635 ,  G06F3/067 ,  G06F3/0673 ,  G06F11/3034 ,  G06F11/3051 ,  G06F11/3055 ,  G06F13/102

Abstract: Methods, apparatus and computer program products implement embodiments of the present invention that include a storage device configured to store a logical volume mapped between a host computer and a computer having multiple initiator ports, and a processor configured to detect a unit attention condition for the logical volume. Examples of unit attention conditions for the logical volume include management operations on the logical volume and host requests for the logical volume. Upon determining, based on the unique serial number, that the processor has previously conveyed the unit attention code to any of the multiple initiator ports, to reconvey an input/output (I/O) request, receive a response for the I/O request, and convey the result to the host computer.

Abstract translation: 方法，装置和计算机程序产品实现本发明的实施例，其包括被配置为存储映射在主计算机和具有多个发起端口的计算机之间的逻辑卷的存储设备，以及被配置为检测逻辑的单元注意条件的处理器 卷。 逻辑卷的单元注意事项的示例包括逻辑卷上的管理操作和逻辑卷的主机请求。 在基于唯一的序列号确定处理器先前已将单元注意码传送到多个发起端口中的任一个时，重新输入/输出（I / O）请求，接收I / O请求的响应 ，并将结果传达给主机。

公开(公告)号：US20140372635A1

公开(公告)日：2014-12-18

申请号：US13916185

申请日：2013-06-12

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Oren LI-ON ,  Orit NISSAN-MESSING ,  Assaf NITZAN ,  Eyal PEREK

IPC: G06F11/30

CPC classification number: G06F3/0653 ,  G06F3/061 ,  G06F3/0613 ,  G06F3/0635 ,  G06F3/067 ,  G06F3/0673 ,  G06F11/3034 ,  G06F11/3051 ,  G06F11/3055 ,  G06F13/102

Abstract: Methods, apparatus and computer program products implement embodiments of the present invention that include a storage device configured to store a logical volume mapped between a host computer and a computer having multiple initiator ports, and a processor configured to detect a unit attention condition for the logical volume. Examples of unit attention conditions for the logical volume include management operations on the logical volume and host requests for the logical volume. Upon detecting a unit attention condition, the processor can to generate a unit attention code and a respective unique serial number in response to detecting the unit attention condition, and upon receiving an input/output (I/O) request for the logical volume from a given initiator port, the processor can convey, to the given initiator port, the unit attention code and the respective unique serial number in response to the I/O request.

Abstract translation: 方法，装置和计算机程序产品实现本发明的实施例，其包括被配置为存储映射在主计算机和具有多个发起端口的计算机之间的逻辑卷的存储设备，以及被配置为检测逻辑的单元注意条件的处理器 卷。 逻辑卷的单元注意事项的示例包括逻辑卷上的管理操作和逻辑卷的主机请求。 在检测到单元注意情况时，处理器可以响应于检测到单元注意情况而产生单元注意代码和相应的唯一序列号，并且当从一个或多个单元接收到对逻辑卷的输入/输出（I / O）请求时， 给定启动器端口，处理器可以响应于I / O请求向给定的启动器端口传送单元注意代码和相应的唯一序列号。

公开(公告)号：US20150046667A1

公开(公告)日：2015-02-12

申请号：US14523479

申请日：2014-10-24

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Ram ELRON ,  Ehood GARMIZA ,  Haim HELMAN ,  Assaf NITZAN

IPC: G06F3/06 ,  G06F12/02

CPC classification number: G06F3/0647 ,  G06F3/0604 ,  G06F3/0619 ,  G06F3/0644 ,  G06F3/065 ,  G06F3/067 ,  G06F3/0673 ,  G06F3/0683 ,  G06F11/1004 ,  G06F12/023 ,  G06F17/30575

Abstract: A method includes computing, in a local storage system having a local volume with a plurality of local regions, respective local checksum signatures over the local regions, and computing, in a remote storage system having a remote volume with remote regions in a one-to-one correspondence with the local regions, respective remote checksum signatures over the remote regions. A given remote region is identified, the given remote region having a given remote signature and a corresponding local region with a given local signature that does not match the given remote signature. The data in the given remote region is then replaced with data from the corresponding local region.

Abstract translation: 一种方法包括在具有多个本地区域的本地卷的本地存储系统中计算在本地区域上的相应局部校验和签名，以及在远程存储系统中计算具有远程区域的远程区域 - 与本地区域的一个对应关系，远程区域上的各个远程校验和签名。 识别给定的远程区域，给定的远程区域具有给定的远程签名以及具有给定的本地签名的与给定的远程签名不匹配的对应的本地区域。 然后将来自相应局部区域的数据替换给定远程区域中的数据。

公开(公告)号：US20160224276A1

公开(公告)日：2016-08-04

申请号：US15094435

申请日：2016-04-08

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Ram ELRON ,  Ehood GARMIZA ,  Haim HELMAN ,  Assaf NITZAN

IPC: G06F3/06 ,  G06F11/10

CPC classification number: G06F3/0647 ,  G06F3/0604 ,  G06F3/0619 ,  G06F3/0644 ,  G06F3/065 ,  G06F3/067 ,  G06F3/0673 ,  G06F3/0683 ,  G06F11/1004 ,  G06F12/023 ,  G06F17/30575

Abstract: A method includes computing, in a local storage system having a local volume with a plurality of local regions, respective local checksum signatures over the local regions, and computing, in a remote storage system having a remote volume with remote regions in a one-to-one correspondence with the local regions, respective remote checksum signatures over the remote regions. A given remote region is identified, the given remote region having a given remote signature and a corresponding local region with a given local signature that does not match the given remote signature. The data in the given remote region is then replaced with data from the corresponding local region.

公开(公告)号：US20140372636A1

公开(公告)日：2014-12-18

申请号：US13916162

申请日：2013-06-12

Applicant: International Business Machines Corporation

Inventor： Oren LI-ON ,  Orit NISSAN-MESSING ,  Assaf NITZAN ,  Eyal PEREK

IPC: G06F11/30

CPC classification number: G06F11/3034 ,  G06F3/0613 ,  G06F3/0635 ,  G06F3/067 ,  G06F11/3051 ,  G06F11/3055

Abstract: Methods, apparatus and computer program products implement embodiments of the present invention that include detecting, by a storage system, a change in a mapping of a logical volume to one or more host ports of a host computer communicating with the storage system via a storage area network (SAN). Subsequent to detecting the change, first and second input/output (I/O) requests for the logical volume are received from a given host port, and a first unit attention message is conveyed to the given host port in response to the first I/O request. A second unit attention message is conveyed to the given host port upon determining that the storage system received the second I/O request within a specific time period commencing upon receiving the first I/O request. However, the second I/O request can be performed if the storage system received the second I/O request subsequent to the specific time period.

Abstract translation: 方法，装置和计算机程序产品实现本发明的实施例，包括存储系统通过存储区域检测逻辑卷到与存储系统通信的主机的一个或多个主机端口的映射的变化 网络（SAN）。 在检测到改变之后，从给定的主机端口接收对逻辑卷的第一和第二输入/输出（I / O）请求，并且响应于第一I / O端口将第一单元注意消息传送到给定的主机端口， 请求。 在确定存储系统在接收到第一I / O请求之后的特定时间段内接收到第二I / O请求时，将第二单元注意消息传送到给定的主机端口。 然而，如果存储系统在特定时间段之后接收到第二I / O请求，则可以执行第二I / O请求。