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公开(公告)号：US08380852B2
公开(公告)日：2013-02-19
申请号：US12646058
申请日：2009-12-23
IPC分类号： G06F15/173
CPC分类号： G06F11/0793 , G06F3/0605 , G06F3/0622 , G06F3/0637 , G06F3/0659 , G06F3/067 , G06F11/0727
摘要： A method, system and computer-usable medium are disclosed for managing storage system resources in a storage area network (SAN). A target data storage server registers itself within a storage area network (SAN) fabric to receive a Registered State Change Notification (RSCN) should a SCSI initiator become inactive. A SCSI initiator then requests reservation of a target LUN. In response, the target data server reserves the LUN for use by the SCSI initiator. If a RSCN is received by the target data storage server, then a GID_PN server request, which comprises the unique identifier of SCSI initiator, is generated after a predetermined time interval and a SAN fabric name server. If the name server's response to the GID_PN server request is positive, then the SCSI initiator was detected as being active and the target data storage server keeps the reservation for the LUN active for the SCSI initiator. Otherwise, the reservation for the LUN is released for use by other SCSI initiators.
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2.发明授权Clearing SCSI reservations for non-detectable initiators for extended duration 有权清除长时间不可检测的启动器的SCSI预留公开(公告)号：US08380839B2
公开(公告)日：2013-02-19
申请号：US13427016
申请日：2012-03-22
IPC分类号： G06F15/173
CPC分类号： G06F11/0793 , G06F3/0605 , G06F3/0622 , G06F3/0637 , G06F3/0659 , G06F3/067 , G06F11/0727
摘要： A method, system and computer-usable medium are disclosed for managing storage system resources in a storage area network (SAN). A target data storage server registers itself within a storage area network (SAN) fabric to receive a Registered State Change Notification (RSCN) should a SCSI initiator become inactive. A SCSI initiator then requests reservation of a target LUN. In response, the target data server reserves the LUN for use by the SCSI initiator. If a RSCN is received by the target data storage server, then a GID_PN server request, which comprises the unique identifier of SCSI initiator, is generated after a predetermined time interval and a SAN fabric name server. If the name server's response to the GID_PN server request is positive, then the SCSI initiator was detected as being active and the target data storage server keeps the reservation for the LUN active for the SCSI initiator. Otherwise, the reservation for the LUN is released for use by other SCSI initiators.
摘要翻译： 公开了一种用于管理存储区域网络（SAN）中的存储系统资源的方法，系统和计算机可用介质。 目标数据存储服务器将自身注册到存储区域网络（SAN）结构中，以在SCSI启动器变为不活动状态时接收注册状态更改通知（RSCN）。 然后，SCSI启动器请求预定目标LUN。 作为响应，目标数据服务器保留LUN供SCSI启动器使用。 如果目标数据存储服务器接收到RSCN，则在预定时间间隔之后生成包含SCSI启动器的唯一标识符的GID_PN服务器请求，以及SAN结构名称服务器。 如果名称服务器对GID_PN服务器请求的响应为正，则检测到SCSI启动器处于活动状态，并且目标数据存储服务器保持SCSI启动器的LUN活动预留。 否则，LUN的预留将被释放供其他SCSI启动器使用。
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公开(公告)号：US20130036240A1
公开(公告)日：2013-02-07
申请号：US13198195
申请日：2011-08-04
申请人： Kiran K Anumalasetty , Nicholas S. Ham , Purna Chandra R. Jasti , Sudhir Maddali , Yadagiri Rajaboina , Sanket Rathi
发明人： Kiran K Anumalasetty , Nicholas S. Ham , Purna Chandra R. Jasti , Sudhir Maddali , Yadagiri Rajaboina , Sanket Rathi
IPC分类号： G06F13/14
CPC分类号： G06F11/1612 , G06F3/0635 , G06F3/0637 , G06F11/2046 , G06F13/387
摘要： A system and computer program product are disclosed for retrieving the reservation status information of a storage area network (SAN) device, a host transmits a persistent reservation in command with service action setting of ‘read reservation’ to a first LUN, wherein the host is connected to a port of the data storage server to which the LUN belongs. The host receives a message from the LUN. The host determines that the message is a success. The host sends to the LUN a persistent reservation in command with service action setting of ‘read keys’, responsive to a success message. The host determines that the LUN responds with a zero data length. The host determines the LUN is reserved with type 2 reservation, responsive to a determination that the LUN responds with a non-zero data length.
摘要翻译： 公开了一种用于检索存储区域网络（SAN）设备的预约状态信息的系统和计算机程序产品，主机以第一LUN的读取预留的服务动作设置命令发送具有服务动作设置的持续预留，其中主机连接到 LUN所属的数据存储服务器端口。 主机从LUN接收到一条消息。 主机确定消息是成功的。 响应于成功消息，主机向LUN发送具有读取密钥的服务动作设置的持续预留。 主机确定LUN以零数据长度进行响应。 主机根据确定LUN以非零数据长度进行响应确定LUN将保留为2型预留。
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4.发明申请Clearing SCSI Reservations for Non-Detectable Initiators for Extended Duration 有权清除不可检测的启动器的SCSI预留长时间公开(公告)号：US20120179807A1
公开(公告)日：2012-07-12
申请号：US13427016
申请日：2012-03-22
IPC分类号： G06F15/16
CPC分类号： G06F11/0793 , G06F3/0605 , G06F3/0622 , G06F3/0637 , G06F3/0659 , G06F3/067 , G06F11/0727
摘要： A method, system and computer-usable medium are disclosed for managing storage system resources in a storage area network (SAN). A target data storage server registers itself within a storage area network (SAN) fabric to receive a Registered State Change Notification (RSCN) should a SCSI initiator become inactive. A SCSI initiator then requests reservation of a target LUN. In response, the target data server reserves the LUN for use by the SCSI initiator. If a RSCN is received by the target data storage server, then a GID_PN server request, which comprises the unique identifier of SCSI initiator, is generated after a predetermined time interval and a SAN fabric name server. If the name server's response to the GID_PN server request is positive, then the SCSI initiator was detected as being active and the target data storage server keeps the reservation for the LUN active for the SCSI initiator. Otherwise, the reservation for the LUN is released for use by other SCSI initiators.
摘要翻译： 公开了一种用于管理存储区域网络（SAN）中的存储系统资源的方法，系统和计算机可用介质。 目标数据存储服务器将自身注册到存储区域网络（SAN）结构中，以在SCSI启动器变为不活动状态时接收注册状态更改通知（RSCN）。 然后，SCSI启动器请求预定目标LUN。 作为响应，目标数据服务器保留LUN供SCSI启动器使用。 如果目标数据存储服务器接收到RSCN，则在预定时间间隔之后生成包含SCSI启动器的唯一标识符的GID_PN服务器请求，以及SAN结构名称服务器。 如果名称服务器对GID_PN服务器请求的响应为正，则检测到SCSI启动器处于活动状态，并且目标数据存储服务器保持SCSI启动器的LUN活动预留。 否则，LUN的预留将被释放供其他SCSI启动器使用。
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5.发明申请Clearing SCSI Reservations for Non-Detectable Initiators for Extended Duration 有权清除不可检测的启动器的SCSI预留长时间公开(公告)号：US20110173506A1
公开(公告)日：2011-07-14
申请号：US12646058
申请日：2009-12-23
CPC分类号： G06F11/0793 , G06F3/0605 , G06F3/0622 , G06F3/0637 , G06F3/0659 , G06F3/067 , G06F11/0727
摘要： A method, system and computer-usable medium are disclosed for managing storage system resources in a storage area network (SAN). A target data storage server registers itself within a storage area network (SAN) fabric to receive a Registered State Change Notification (RSCN) should a SCSI initiator become inactive. A SCSI initiator then requests reservation of a target LUN. In response, the target data server reserves the LUN for use by the SCSI initiator. If a RSCN is received by the target data storage server, then a GID_PN server request, which comprises the unique identifier of SCSI initiator, is generated after a predetermined time interval and a SAN fabric name server. If the name server's response to the GID_PN server request is positive, then the SCSI initiator was detected as being active and the target data storage server keeps the reservation for the LUN active for the SCSI initiator. Otherwise, the reservation for the LUN is released for use by other SCSI initiators.
摘要翻译： 公开了一种用于管理存储区域网络（SAN）中的存储系统资源的方法，系统和计算机可用介质。 目标数据存储服务器将自身注册到存储区域网络（SAN）结构中，以在SCSI启动器变为不活动状态时接收注册状态更改通知（RSCN）。 然后，SCSI启动器请求预定目标LUN。 作为响应，目标数据服务器保留LUN供SCSI启动器使用。 如果目标数据存储服务器接收到RSCN，则在预定时间间隔之后生成包含SCSI启动器的唯一标识符的GID_PN服务器请求，以及SAN结构名称服务器。 如果名称服务器对GID_PN服务器请求的响应为正，则检测到SCSI启动器处于活动状态，并且目标数据存储服务器保持SCSI启动器的LUN活动预留。 否则，LUN的预留将被释放供其他SCSI启动器使用。
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公开(公告)号：US08645586B2
公开(公告)日：2014-02-04
申请号：US13452468
申请日：2012-04-20
申请人： Kiran K Anumalasetty , Nicholas S Ham , Purna Chandra Jasti , Sudhir Maddali , Yadagiri Rajaboina , Sanket Rathi
发明人： Kiran K Anumalasetty , Nicholas S Ham , Purna Chandra Jasti , Sudhir Maddali , Yadagiri Rajaboina , Sanket Rathi
CPC分类号： G06F11/1612 , G06F3/0635 , G06F3/0637 , G06F11/2046 , G06F13/387
摘要： A method is disclosed for retrieving the reservation status information of a storage area network (SAN) device, a host transmits a persistent reservation in command with service action setting of ‘read reservation’ to a first LUN, wherein the host is connected to a port of the data storage server to which the LUN belongs. The host receives a message from the LUN. The host determines that the message is a success. The host sends to the LUN a persistent reservation in command with service action setting of ‘read keys’, responsive to a success message. The host determines that the LUN responds with a zero data length. The host determines the LUN is reserved with type 2 reservation, responsive to a determination that the LUN responds with a non-zero data length.
摘要翻译： 公开了一种用于检索存储区域网络（SAN）设备的预约状态信息的方法，主机以第一LUN的“读取预留”的服务动作设置命令发送持续预约，其中主机连接到端口 的LUN所属的数据存储服务器。 主机从LUN接收消息。 主机确定消息是成功的。 主机响应于成功消息，向服务动作设置“读取密钥”发送命令中的持久保留。 主机确定LUN以零数据长度进行响应。 主机根据确定LUN以非零数据长度进行响应确定LUN将保留为2型预留。
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公开(公告)号：US20110161725A1
公开(公告)日：2011-06-30
申请号：US12647664
申请日：2009-12-28
申请人： James P. Allen , Kiran K. Anumalasetty , Sudhir Maddali , Bhyrav M. Mutnury , James A. Pafumi , Sanket Rathi , Stephen M. Tee
发明人： James P. Allen , Kiran K. Anumalasetty , Sudhir Maddali , Bhyrav M. Mutnury , James A. Pafumi , Sanket Rathi , Stephen M. Tee
CPC分类号： G06F12/10 , G06F11/1443
摘要： In virtualized environments, storage may be managed dynamically due to the changing data storage requirements. In such environments, logical storage unit identifiers (LUN IDs) may be modified as a result of deleting an existing mapping between physical storage and a virtualization server and recreating the mapping. This can result in I/O request failure. Techniques for resolving errors resulting from LUN ID modifications can be time-intensive and labor-intensive and can disrupt a communication path between a host device and the physical storage. Functionality can be implemented to dynamically identify the LUN ID modifications, determine valid LUN IDs, and retransmit failed I/O requests. This can help minimize I/O request failures due to LUN ID modifications without disrupting the communication path between the host device and the physical storage.
摘要翻译： 在虚拟化环境中，存储可能由于数据存储需求的变化而动态管理。 在这种环境中，可以通过删除物理存储和虚拟化服务器之间的现有映射并重新创建映射来修改逻辑存储单元标识符（LUN ID）。 这可能导致I / O请求失败。 用于解决由LUN ID修改产生的错误的技术可能是耗时且费力的，并且可能会中断主机设备和物理存储之间的通信路径。 可以实现功能来动态识别LUN ID修改，确定有效的LUN ID，并重新发送失败的I / O请求。 这可以帮助最小化由于LUN ID修改而导致的I / O请求失败，而不会中断主机设备和物理存储之间的通信路径。
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公开(公告)号：US08639856B2
公开(公告)日：2014-01-28
申请号：US13198195
申请日：2011-08-04
申请人： Kiran K Anumalasetty , Nicholas S Ham , Purna Chandra Jasti , Sudhir Maddali , Yadagiri Rajaboina , Sanket Rathi
发明人： Kiran K Anumalasetty , Nicholas S Ham , Purna Chandra Jasti , Sudhir Maddali , Yadagiri Rajaboina , Sanket Rathi
CPC分类号： G06F11/1612 , G06F3/0635 , G06F3/0637 , G06F11/2046 , G06F13/387
摘要： A system and computer program product are disclosed for retrieving the reservation status information of a storage area network (SAN) device, a host transmits a persistent reservation in command with service action setting of ‘read reservation’ to a first LUN, wherein the host is connected to a port of the data storage server to which the LUN belongs. The host receives a message from the LUN. The host determines that the message is a success. The host sends to the LUN a persistent reservation in command with service action setting of ‘read keys’, responsive to a success message. The host determines that the LUN responds with a zero data length. The host determines the LUN is reserved with type 2 reservation, responsive to a determination that the LUN responds with a non-zero data length.
摘要翻译： 公开了一种用于检索存储区域网络（SAN）设备的预约状态信息的系统和计算机程序产品，主机以第一LUN的“读取预留”的服务动作设置命令发送持续预留，其中主机是 连接到LUN所属的数据存储服务器的端口。 主机从LUN接收消息。 主机确定消息是成功的。 主机响应于成功消息，向服务动作设置“读取密钥”发送命令中的持久保留。 主机确定LUN以零数据长度进行响应。 主机根据确定LUN以非零数据长度进行响应确定LUN将保留为2型预留。
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公开(公告)号：US20130036241A1
公开(公告)日：2013-02-07
申请号：US13452468
申请日：2012-04-20
申请人： Kiran K. Anumalasetty , Nicholas S. Ham , Purna Chandra R. Jasti , Sudhir Maddali , Yadagiri Rajaboina , Sanket Rathi
发明人： Kiran K. Anumalasetty , Nicholas S. Ham , Purna Chandra R. Jasti , Sudhir Maddali , Yadagiri Rajaboina , Sanket Rathi
IPC分类号： G06F13/14
CPC分类号： G06F11/1612 , G06F3/0635 , G06F3/0637 , G06F11/2046 , G06F13/387
摘要： A method is disclosed for retrieving the reservation status information of a storage area network (SAN) device, a host transmits a persistent reservation in command with service action setting of ‘read reservation’ to a first LUN, wherein the host is connected to a port of the data storage server to which the LUN belongs. The host receives a message from the LUN. The host determines that the message is a success. The host sends to the LUN a persistent reservation in command with service action setting of ‘read keys’, responsive to a success message. The host determines that the LUN responds with a zero data length. The host determines the LUN is reserved with type 2 reservation, responsive to a determination that the LUN responds with a non-zero data length.
摘要翻译： 公开了一种用于检索存储区域网络（SAN）设备的预约状态信息的方法，主机将具有对第一LUN的读取预留的服务动作设置的命令中的持续预留进行发送，其中主机连接到 LUN所属的数据存储服务器。 主机从LUN接收到一条消息。 主机确定消息是成功的。 响应于成功消息，主机向LUN发送具有读取密钥的服务动作设置的持续预留。 主机确定LUN以零数据长度进行响应。 主机根据确定LUN以非零数据长度进行响应确定LUN将保留为2型预留。
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公开(公告)号：US08086896B2
公开(公告)日：2011-12-27
申请号：US12647664
申请日：2009-12-28
申请人： James P. Allen , Kiran K. Anumalasetty , Sudhir Maddali , Bhyrav M. Mutnury , James A. Pafumi , Sanket Rathi , Stephen M. Tee
发明人： James P. Allen , Kiran K. Anumalasetty , Sudhir Maddali , Bhyrav M. Mutnury , James A. Pafumi , Sanket Rathi , Stephen M. Tee
IPC分类号： G06F11/00
CPC分类号： G06F12/10 , G06F11/1443
摘要： In virtualized environments, storage may be managed dynamically due to the changing data storage requirements. In such environments, logical storage unit identifiers (LUN IDs) may be modified as a result of deleting an existing mapping between physical storage and a virtualization server and recreating the mapping. This can result in I/O request failure. Techniques for resolving errors resulting from LUN ID modifications can be time-intensive and labor-intensive and can disrupt a communication path between a host device and the physical storage. Functionality can be implemented to dynamically identify the LUN ID modifications, determine valid LUN IDs, and retransmit failed I/O requests. This can help minimize I/O request failures due to LUN ID modifications without disrupting the communication path between the host device and the physical storage.
摘要翻译： 在虚拟化环境中，存储可能由于数据存储需求的变化而动态管理。 在这种环境中，可以通过删除物理存储和虚拟化服务器之间的现有映射并重新创建映射来修改逻辑存储单元标识符（LUN ID）。 这可能导致I / O请求失败。 用于解决由LUN ID修改产生的错误的技术可能是耗时且费力的，并且可能会中断主机设备和物理存储之间的通信路径。 可以实现功能来动态识别LUN ID修改，确定有效的LUN ID，并重新发送失败的I / O请求。 这可以帮助最小化由于LUN ID修改而导致的I / O请求失败，而不会中断主机设备和物理存储之间的通信路径。
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