6–Boot from SAN Configuration
iSCSI Boot from SAN
103
BC0154501-00 P
Change this statement to:
GRUB_CMDLINE_LINUX="rd.iscsi.firmware"
10. Create a new
grub.cfg
file by issuing the following command:
#
grub2-mkconfig -o /boot/efi/EFI/redhat/grub.cfg
11.
Build the
initramfs
file by issuing the following command:
#
dracut -f
12. Reboot and change the adapter boot settings to use L4 for both port and
boot through L4.
13. After booting into OS, set up the multipath daemon
multipathd.conf
:
#
mpathconf --enable --with_multipathd y
#
mpathconf –enable
14. Start multipathd and verify that multipath.service is enabled.
#
systemctl start multipathd
#
systemctl status multipathd
15. Rebuild
initramfs
with multipath support.
#
dracut --force --add multipath --include /etc/multipath
16. Reboot the server and boot into the OS with multipath.
Migrating and Configuring MPIO to Offloaded Interface for SLES 11 SP4
To migrate from L2 to L4 and configure MPIO to boot the OS over an
offloaded interface for SLES 11 SP4:
1.
Follow all the steps necessary to migrate a non-offload (L2) interface to an
offload (L4) interface, over a single path. See
Migrating to Offload iSCSI for
.
2.
After you boot into the OS using the L4 interface, prepare multipathing as
follows:
a.
Reboot the server and open the HII by going to
System
Setup/Utilities
.
b.
In the HII, select
System Configuration
, and select the second
adapter port to be used for multipath.
NOTE
\
For any additional changes in the
/etc/multipath.conf
file to take effect,
you must rebuild the initrd image and reboot the server.