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
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
--------------------------------------
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.