6–Boot from SAN Configuration
iSCSI Boot from SAN
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BC0154501-00 P
12. Reboot the server and boot into OS with multipath.
Migrating and Configuring MPIO to Offloaded Interface for RHEL 7.2/7.3
To migrate from L2 to L4 and configure MPIO to boot the OS over an
offloaded interface for RHEL 7.2/7.3:
1.
Configure the iSCSI boot settings for L2 BFS on both ports of the adapter.
The boot will log in through only one port, but will create an iSCSI Boot
Firmware Table (iBFT) interface for both ports.
2.
While booting to the CD, ensure that you specify the following kernel
parameters:
rd.iscsi.ibft
dd
3.
Provide the DUD and complete the installation.
4.
Boot to the OS with L2.
5.
Update Open-iSCSI tools and iscsiuio by issuing the following commands:
#
rpm -ivh qlgc-open-iscsi-2.0_873.111.rhel7u3-3.x86_64.rpm --force
#
rpm -ivh iscsiuio-2.11.5.5-6.rhel7u3.x86_64.rpm --force
6.
Reload all the daemon services by issuing the following command:
#
systemctl daemon-reload
7.
Restart iscsid and iscsiuio services by issuing the following commands:
#
systemctl restart iscsiuio
#
systemctl restart iscsid
8.
Edit the
/usr/libexec/iscsi-mark-root-nodes
file and locate the
following statement:
if [ "$transport" = bnx2i ]; then
Change the statement to:
if [ "$transport" = bnx2i ] || [ "$transport" = qedi ]; then
9.
Open the
/etc/default/grub
file, and then locate the following
statement:
GRUB_CMDLINE_LINUX="iscsi_firmware ip=ibft"
NOTE
\
For any additional changes in the
/etc/multipath.conf
file to take effect,
you must rebuild the initrd image and reboot the server.