10–iSCSI Protocol
iSCSI Boot
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18.
(Red Hat Only) To enable CHAP, you need to modify the CHAP section of
the
iscsid.conf
file on the iSCSI Target. Edit the
iscsid.conf
file with
one-way or two-way CHAP information as desired.
19.
Shut down the system and disconnect the local hard drive. Now you are
ready to iSCSI boot the iSCSI Target.
20.
Configure iSCSI Boot Parameters, including CHAP parameters if desired
(see
“Configuring the iSCSI Target” on page 165
21.
Continue booting into the iSCSI Boot image and choose one of the images
you created (non-offload or offload). Your choice should correspond with
your choice in the iSCSI Boot parameters section. If HBA Boot Mode was
enabled in the iSCSI Boot Parameters section, you have to boot the offload
image. SuSE 10.x and SLES 11 do not support offload.
Troubleshooting iSCSI Boot
The following troubleshooting tips are useful for iSCSI boot.
Problem
: A system blue screen occurs when iSCSI boots Windows Server 2008
R2 through the adapter’s NDIS path with the initiator configured using a link-local
IPv6 address and the target configured using a router-configured IPv6 address.
Solution
: This is a known Windows TCP/IP stack issue.
Problem
: The QLogic iSCSI Crash Dump utility will not work properly to capture a
memory dump when the link speed for iSCSI boot is configured for 10 Mbps or
100 Mbps.
Solution
: The iSCSI Crash Dump utility is supported when the link speed for
iSCSI boot is configured for 1 Gbps or 10 Gbps. 10 Mbps or 100 Mbps is not
supported.
Problem
: An iSCSI target is not recognized as an installation target when you try
to install Windows Server 2008 by using an IPv6 connection.
Solution
: This is a known third-party issue. See Microsoft Knowledge Base KB
971443,
http://support.microsoft.com/kb/971443
Problem
: When switching iSCSI boot from the Microsoft standard path to QLogic
iSCSI offload, the booting fails to complete.
Solution
: Prior to switching the iSCSI boot path, install or upgrade the QLogic
Virtual Bus Device (VBD) driver to and OIS driver to the latest versions.
Problem
: The iSCSI configuration utility will not run.
Solution
: Ensure that the iSCSI Boot firmware is installed in the NVRAM.
Problem
: A system blue screen occurs when installing the QLogic drivers through
Windows Plug-and-Play (PnP).
Solution
: Install the drivers through the Setup installer.