594 IBM System Storage DS3500 Introduction and Implementation Guide
RDAC driver installation
Perform the following steps to install the RDAC drivers:
1. The following command is used to uninstall the old RDAC driver if previously installed:
# make uninstall
2. The following command is used to install the new RDAC driver:
# make install
This command will copy the driver modules to the kernel module tree and build the new
RAMdisk image (mpp-2.6.27.19-5-default.img) that includes the RDAC driver modules
and all driver modules that are needed at boot. Without these modules the operating
system will not be able to find the disks.
In certain cases, for advanced troubleshooting, it is possible to first copy the
mpp-2.6.27.19-5-default.img file to another directory and unpack it with the following
command:
# gunzip -c /new_directory/mpp-2.6.27.19-5-default.img |cpio -i --make
directories
The following command will pack the image file again:
find . | cpio -H newc --quiet -o |gzip -9 > mpp-2.6.27.19-5-default.img ||exit 1
3. Now that we have the initrd image, it is necessary to modify the boot loader (grub) to load
the image when the server starts. For that, we need to edit the /boot/grub/menu.lst file
and add the line shown in Example 20-2.
Example 20-2 Edit the /boot/grub/menu.lst
## RDAC Driver
title SUSE Linux (2.6.27.19-5-default) with MPP support
root (hd0,1)
kernel /boot/vmlinuz root=/dev/disk/by-id/scsi-35000c500009c6dcb-part2
splash=silent resume=/dev/disk/by-id/scsi-35000c500009c6dcb-part1 elevator=cfq
showopts vga=0x317
initrd /boot/mpp-2.6.27.19-5-default.img
Take the information for the root and resume parameters from the previous line by default.
4. Reboot the server and when the grub menu appears select the SUSE Linux
(2.6.27.19-5-default) with MPP support option as shown in Figure 20-11. It is possible
to make this selection as default by changing the default parameter in the menu.lst file.
Figure 20-11 Boot menu when server starts after RDAC installation
20.1.3 Setting up the DS3500 logical drives and host mapping
Map the logical drive(s) to the SuSE operating system by using the normal procedure as
described in Chapter 11, “Administration - Mappings Tab” on page 275.

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