公开(公告)号：US08619555B2

公开(公告)日：2013-12-31

申请号：US12948498

申请日：2010-11-17

Applicant: William D. Dallas ,  Chris Busick

Inventor： William D. Dallas ,  Chris Busick

IPC: G01R31/08 ,  G08C15/00 ,  H04L1/00 ,  G06F11/00 ,  G06F15/173 ,  G06F3/00

CPC classification number: G06F11/2005 ,  G06F11/2007 ,  H04L41/069 ,  H04L45/12 ,  H04L45/22 ,  H04L45/28 ,  H04L67/1097

Abstract: Method and system for handling error events on a current path for processing an I/O request for reading information from and writing information to a storage space is provided. A system is able to communicate with the storage space via more than one path. If the current path reports an error event, then an alternate path quality is determined to ascertain whether the alternate path will generate an error similar to the current path. The alternate path quality is determined based on a plurality of factors which are assigned certain weights. The weights are determined based on a likely contribution of each factor to a repetition of the error reported by the current path. If the alternate path quality is equal to or exceeds a programmable threshold value, then the alternate path is selected.

Abstract translation: 提供了用于处理当前路径上的错误事件以处理从存储空间读取信息并将信息写入存储空间的I / O请求的方法和系统。 系统能够通过多个路径与存储空间进行通信。 如果当前路径报告错误事件，则确定替代路径质量以确定备用路径是否将生成类似于当前路径的错误。 基于被分配了某些权重的多个因素确定备用路径质量。 基于每个因素对当前路径报告的错误的重复的可能贡献来确定权重。 如果备用路径质量等于或超过可编程阈值，则选择备用路径。

公开(公告)号：US20120124414A1

公开(公告)日：2012-05-17

申请号：US12948498

申请日：2010-11-17

Applicant: William D. Dallas ,  Chris Busick

Inventor： William D. Dallas ,  Chris Busick

IPC: G06F11/20

CPC classification number: G06F11/2005 ,  G06F11/2007 ,  H04L41/069 ,  H04L45/12 ,  H04L45/22 ,  H04L45/28 ,  H04L67/1097

Abstract: Method and system for handling error events on a current path for processing an I/O request for reading information from and writing information to a storage space is provided. A system is able to communicate with the storage space via more than one path. If the current path reports an error event, then an alternate path quality is determined to ascertain whether the alternate path will generate an error similar to the current path. The alternate path quality is determined based on a plurality of factors which are assigned certain weights. The weights are determined based on a likely contribution of each factor to a repetition of the error reported by the current path. If the alternate path quality is equal to or exceeds a programmable threshold value, then the alternate path is selected.

Abstract translation: 提供了用于处理当前路径上的错误事件以处理从存储空间读取信息并将信息写入存储空间的I / O请求的方法和系统。 系统能够通过多个路径与存储空间进行通信。 如果当前路径报告错误事件，则确定替代路径质量以确定备用路径是否将生成类似于当前路径的错误。 基于被分配了某些权重的多个因素确定备用路径质量。 基于每个因素对当前路径报告的错误的重复的可能贡献来确定权重。 如果备用路径质量等于或超过可编程阈值，则选择备用路径。

公开(公告)号：US08051335B1

公开(公告)日：2011-11-01

申请号：US12131713

申请日：2008-06-02

Applicant: Jan Reimers ,  Chris Busick

Inventor： Jan Reimers ,  Chris Busick

IPC: G06F11/00

CPC classification number: G06F3/0635 ,  G06F3/061 ,  G06F3/0617 ,  G06F3/067 ,  G06F11/201 ,  G06F11/2053

Abstract: Lun communications between a storage server and a storage subsystem for a particular lun are assigned both a current path and an alternate path. Lun communications use the current path unless the current path is determined to be faulty. Path errors may result in the storage server determining a path to be faulty. If the current path for a lun communication is determined to be faulty, then the lun communications will be sent through the alternate path so long as the alternate path is determined to be reliable. Over time, a path previously determined to be faulty may recover and be used again for lun communications.

Abstract translation: 存储服务器和特定LUN的存储子系统之间的Lun通信将分配当前路径和备用路径。 Lun通信使用当前路径，除非当前路径被确定为故障。 路径错误可能导致存储服务器确定路径故障。 如果当前的通信路径被确定为故障，则只要备用路径被确定为可靠，则通信将通过备用路径发送。 随着时间的推移，先前确定为有故障的路径可能会恢复并再次用于通信。