Novell LINUX ENTERPRISE SERVER 11 - STORAGE ADMINISTRATION GUIDE 2-23-2010, Administration Manual, Page: 56 / 140

56 SLES 11: Storage Administration Guide
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After changing
/etc/sysconfig/kernel
, you must re-create the
INITRD
on your system with the
mkinitrd
command, then reboot in order for the changes to take effect.
When you are using LILO as a boot manager, reinstall it with the
/sbin/lilo
command. No further
action is required if you are using GRUB.
7.4.4 Adding multipathd to the Boot Sequence
Use either of the methods in this section to add multipath I/O services (
multipathd
) to the boot
sequence.
Š “YaST” on page 56
Š
“Command Line” on page 56
YaST
1 In YaST, click System > System Services (Runlevel) > Simple Mode .
2
Select multipathd , then click Enable .
3 Click OK to acknowledge the service startup message.
4
Click Finish , then click Yes .
The changes do not take affect until the server is restarted.
Command Line
1 Open a terminal console, then log in as the
root
user or equivalent.
2 At the terminal console prompt, enter
insserv multipathd
7.4.5 Creating and Configuring the /etc/multipath.conf File
The
/etc/multipath.conf
file does not exist unless you create it. The
/usr/share/doc/
packages/multipath-tools/multipath.conf.synthetic
file contains a sample
/etc/
multipath.conf
file that you can use as a guide for multipath settings. See
/usr/share/doc/
packages/multipath-tools/multipath.conf.annotated
for a template with extensive
comments for each of the attributes and their options.
Š
“Creating the multipath.conf File” on page 57
Š
“Verifying the Setup in the etc/multipath.conf File” on page 57
Š
“Configuring User-Friendly Names or Alias Names in /etc/multipath.conf” on page 58
Š
“Blacklisting Non-Multipathed Devices in /etc/multipath.conf” on page 58
Š
“Configuring Default Multipath Behavior in /etc/multipath.conf” on page 59
Š
“Configuring Default Settings for zSeries in /etc/multipath.conf” on page 59
Š “Applying Changes Made to the /etc/multipath.conf File” on page 60