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1. 发明授权

US08930620B2 Host discovery and handling of ALUA preferences and state transitions 有权
标题翻译：主机发现和处理ALUA偏好和状态转换
公开(公告)号：US08930620B2
公开(公告)日：2015-01-06
申请号：US12945467
申请日：2010-11-12
申请人： Hari Krishna Vemuri , Tushar Ravindranath Gosavi , Neha Rajendraprasad Gandhi
发明人： Hari Krishna Vemuri , Tushar Ravindranath Gosavi , Neha Rajendraprasad Gandhi
IPC分类号： G06F3/06 , G06F11/20
CPC分类号： G06F11/2092 , G06F3/0613 , G06F3/0635 , G06F3/067 , G06F11/201
摘要： Various systems and methods can discover asymmetric logical unit (LUN) access (ALUA) preferences and/or state transitions and use those preferences and/or state transitions to control how a host accesses a LUN in an ALUA array. One such method involves detecting a preferred controller for a LUN and then detecting that a current owner controller of the LUN is not the preferred controller. In response, the method can initiate an ownership change from the current owner controller to the preferred controller. Another method involves detecting an initial state of a first controller with respect to a LUN. The method then detects a subsequent state of the first controller with respect to the LUN subsequent to detecting the initial state. The method can then cause a computing device to access the LUN via a second controller, in response to the subsequent state not being the active optimized state.
摘要翻译：各种系统和方法可以发现不对称逻辑单元（LUN）访问（ALUA）偏好和/或状态转换，并使用这些偏好和/或状态转换来控制主机如何访问ALUA阵列中的LUN。一种这样的方法涉及检测LUN的优选控制器，然后检测LUN的当前所有者控制器不是优选控制器。作为回应，该方法可以启动从当前所有者控制器到首选控制器的所有权更改。另一种方法涉及检测第一控制器相对于LUN的初始状态。然后该方法在检测到初始状态之后检测第一控制器相对于LUN的后续状态。该方法然后可以使计算设备经由第二控制器访问LUN，以响应于后续状态不是活动优化状态。

2. 发明申请

US20120124312A1 HOST DISCOVERY AND HANDLING OF ALUA PREFERENCES AND STATE TRANSITIONS 有权
标题翻译：主要发现和处理ALUA优先权和状态转换
公开(公告)号：US20120124312A1
公开(公告)日：2012-05-17
申请号：US12945467
申请日：2010-11-12
申请人： Hari Krishna Vemuri , Tushar Ravindranath Gosavi , Neha Rajendraprasad Gandhi
发明人： Hari Krishna Vemuri , Tushar Ravindranath Gosavi , Neha Rajendraprasad Gandhi
IPC分类号： G06F12/14 , G06F12/00
CPC分类号： G06F11/2092 , G06F3/0613 , G06F3/0635 , G06F3/067 , G06F11/201
摘要： Various systems and methods can discover asymmetric logical unit (LUN) access (ALUA) preferences and/or state transitions and use those preferences and/or state transitions to control how a host accesses a LUN in an ALUA array. One such method involves detecting a preferred controller for a LUN and then detecting that a current owner controller of the LUN is not the preferred controller. In response, the method can initiate an ownership change from the current owner controller to the preferred controller. Another method involves detecting an initial state of a first controller with respect to a LUN. The method then detects a subsequent state of the first controller with respect to the LUN subsequent to detecting the initial state. The method can then cause a computing device to access the LUN via a second controller, in response to the subsequent state not being the active optimized state.
摘要翻译：各种系统和方法可以发现不对称逻辑单元（LUN）访问（ALUA）偏好和/或状态转换，并使用这些偏好和/或状态转换来控制主机如何访问ALUA阵列中的LUN。一种这样的方法涉及检测LUN的优选控制器，然后检测LUN的当前所有者控制器不是优选控制器。作为回应，该方法可以启动从当前所有者控制器到首选控制器的所有权更改。另一种方法涉及检测第一控制器相对于LUN的初始状态。然后该方法在检测到初始状态之后检测第一控制器相对于LUN的后续状态。该方法然后可以使计算设备经由第二控制器访问LUN，以响应于后续状态不是活动优化状态。

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