Invention Grant
US08645635B2 Method and apparatus for detecting and preemptively ameliorating potential logic unit thrashing in a storage system having multiple requesters
失效
用于检测并预先改善具有多个请求者的存储系统中的潜在逻辑单元抖动的方法和装置
- Patent Title: Method and apparatus for detecting and preemptively ameliorating potential logic unit thrashing in a storage system having multiple requesters
- Patent Title (中): 用于检测并预先改善具有多个请求者的存储系统中的潜在逻辑单元抖动的方法和装置
-
Application No.: US10611127Application Date: 2003-07-01
-
Publication No.: US08645635B2Publication Date: 2014-02-04
- Inventor: Eric John Bartlett , Carlos Francisco Fuente , Nicholas Michael O'Rourke , William James Scales
- Applicant: Eric John Bartlett , Carlos Francisco Fuente , Nicholas Michael O'Rourke , William James Scales
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Griffiths & Seaton PLLC
- Priority: GB0227873.7 20021129
- Main IPC: G06F12/00
- IPC: G06F12/00 ; G06F13/00 ; G06F13/28
Abstract:
A method and apparatus for detecting and preemptively ameliorating potential logic unit thrashing in a storage system having multiple I/O requesters is disclosed. In response to detecting that each of two requesters has usable access to both of the active-passive pair of controllers, one of the active-passive pair of controllers is selected to be designated as an active resource controller. In response to detecting that one of the two requesters has usable access to only one of the active-passive pair of controllers, only one of the active-passive pair of controllers is selected to be designated as an active resource controller. In response to detecting that each of the two requesters has usable access only to different ones of the active-passive pair of controllers, one of the active-passive pair of controllers is selected to be designated as an active resource controller.
Public/Granted literature
Information query
