Users Guide

6–Boot from SAN Configuration
iSCSI Boot from SAN
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4. Boot to the OS with L2.
5. Update the Open-iSCSI tools by issuing the following commands:
# rpm -ivh qlgc-open-iscsi-2.0_873.111.sles12sp1-3.x86_64.rpm --force
# rpm -ivh iscsiuio-2.11.5.5-6.sles12sp1.x86_64.rpm --force
6. Edit the /etc/default/grub file by changing the rd.iscsi.ibft
parameter to rd.iscsi.firmware, and then save the file.
7. Issue the following command:
# grub2-mkconfig -o /boot/efi/EFI/suse/grub.cfg
8. To load the multipath module, issue the following command:
# modprobe dm_multipath
9. To enable the multipath daemon, issue the following commands:
# systemctl start multipathd.service
# systemctl enable multipathd.service
# systemctl start multipathd.socket
10. To run the multipath utility, issue the following commands:
# multipath (may not show the multipath devices because it is booted with a
single path on L2)
# multipath -ll
11. To inject the multipath module in initrd, issue the following command:
# dracut --force --add multipath --include /etc/multipath
12. Reboot the server and enter system settings by pressing the F9 key during
the POST menu.
13. Change the UEFI configuration to use L4 iSCSI boot:
a. Open System Configuration, select the adapter port, and then select
Port Level Configuration.
b. On the Port Level Configuration page, set the Boot Mode to iSCSI
(HW) and set iSCSI Offload to Enabled.
c. Save the settings, and then exit the System Configuration Menu.
14. Reboot the system. The OS should now boot through the offload interface.
NOTE
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For any additional changes in the /etc/multipath.conf file to take effect,
you must rebuild the initrd image and reboot the server.