Red Hat ENTERPRISE LINUX - ONLINE STORAGE RECONFIGURATION GUIDE BETA Configuration Manual

Research Triangle Park, NC 27709 USA Abstract This guide outlines the different procedures involved in reconfiguring iSCSI, Fibre Channel and SAS storage devices. Beta Document. This document is currently in Beta. Red Hat welcomes any suggestions and corrections; for more information about submitting feedback, refer to Section 1.2, “We Need Fe ...

Red Hat ENTERPRISE LINUX - ONLINE STORAGE RECONFIGURATION GUIDE BETA This section describes how to modify the link loss behavior of devices that use either fibre channel or iSCSI protocols. 7.1. Fibre Channel If a driver implements the Transport dev_loss_tmo callback, access attempts to a device through a link will be blocked when a transport problem is detected. To verify if a device is blocke ...

Red Hat ENTERPRISE LINUX - ONLINE STORAGE RECONFIGURATION GUIDE BETA 1. Determine which mpath link entries in /etc/lvm/.cache are specific to the stale LUN. To do this, run the following command: ls -l /dev/mpath | grep 2. For example, if is 3600d0230003414f30000203a7bc41a00, the following results may appear: lrwxrwxrwx 1 root root 7 Aug 2 10:33 /3600d0230003414f3 ...

This section discusses the fibre channel API, native Red Hat Enterprise Linux 5 fibre channel drivers, and the fibre channel capabilities of these drivers. 2.1. Fibre Channel API Below is a list of /sys/class/ directories that contain files used to provide the userspace API. In each item, host numbers are designated by , bus numbers are < ...

Red Hat ENTERPRISE LINUX - ONLINE STORAGE RECONFIGURATION GUIDE BETA Red Hat Enterprise Linux 5 ships with the following native fibre channel drivers: • lpfc • qla2xxx • zfcp • mptfc Table 1, “Fibre-Channel API Capabilities” describes the different fibre-channel API capabilities of each native Red Hat Enterprise Linux 5 driver. X denotes support for the capability ...