From c57a7036b11dbceceb692cc36f232c59dd41e060 Mon Sep 17 00:00:00 2001 From: Ishai Rabinovitz Date: Tue, 27 Mar 2007 15:03:20 +0200 Subject: [PATCH] Add HA support for Redhat --- srp_release_notes.txt | 32 ++++++++++++++++---------------- 1 file changed, 16 insertions(+), 16 deletions(-) diff --git a/srp_release_notes.txt b/srp_release_notes.txt index be8df11..d7baddf 100644 --- a/srp_release_notes.txt +++ b/srp_release_notes.txt @@ -192,7 +192,7 @@ In addition to the ibsrpdm functionality described above, srp_daemon can also: a. srp_daemon commands equivalent to ibsrpdm: - "srp_daemon -a -o" is equivalent to "srp_daemon -a -o" + "srp_daemon -a -o" is equivalent to "ibsrpdm" "srp_daemon -c -a -o" is equivalent to "ibsrpdm -c" b. srp_daemon extensions to ibsrpdm @@ -318,20 +318,24 @@ original state (before the path failed). High Availability Prerequisites ------------------------------- -Installation: (Execute once) -- Verify that multipath is installed. If not, it is possible to download it - from http://christophe.varoqui.free.fr/multipath-tools/multipath-tools-0.4.7.tar.bz2 - and then compile and install it. +Installation for RHEL4: (Execute once) + - Verify that the standard device-mapper-multipath rpm is installed. If not, install it from the RHEL distribution. -- Update udev: (Execute once - for manual activation of High Availability only) +Installation for SLES10: (Execute once) + - Verify that multipath is installed. If not, it is possible to download it + from http://christophe.varoqui.free.fr/multipath-tools/multipath-tools-0.4.7.tar.bz2 + and then compile and install it. -- Add a file to /etc/udev/rules.d/ (you can call it 91-srp.rules) - This file should have one line: - ACTION=="add", KERNEL=="sd*[!0-9]", RUN+="/sbin/multipath %M:%m" + - Update udev: (Execute once - for manual activation of High Availability only) + + - Add a file to /etc/udev/rules.d/ (you can call it 91-srp.rules) + This file should have one line: + ACTION=="add", KERNEL=="sd*[!0-9]", RUN+="/sbin/multipath %M:%m" + + Note that when SRPHA_ENABLE is set to "yes" (see below in Automatic activation + of High Availability subsection), this file is created upon each boot of + the driver and deleted when the driver is unloaded. -Note that when SRPHA_ENABLE is set to "yes" (see below in Automatic activation -of High Availability subsection), this file is created upon each boot of -the driver and deleted when the driver is unloaded. Manual Activation of High Availability -------------------------------------- @@ -445,10 +449,6 @@ should make sure this will not occur. One solution may be to stop "haldaemon" simultaneous disconnections and connections during normal operation, may lead to what seems as a deadlock between multipath instances. -- High Availability uses multipath which needs at least udev version 050. The - RHEL4 distribution uses udev 039, therefore, High Availability does not work - on the standard Red Hat distribution. - - Stopping the driver while SRP High Availability is enabled kills all multipath processes. Consider appropriate actions in case multipath is used for other purposes. -- 2.46.0