1–Legacy vs. Open-iSCSI
Functional Flows
IS0054604-00 A 1-7
Functional Flows

This section provides functional flow diagrams for discovery, target login, and

session recovery.

13 CHAP CHAP settings are
applied using the QLogic
applicationa.
With CHAP support in
iscsiadm, CHAP entries can
now be added, deleted, and
listed from the user space.
Note: Before you
migrate, delete all
CHAP information
from Flash using
the QLogic applica-
tiona, and then
update the same
CHAP information
in the respective
node records using
iscsiadm com-
mands.
When migration
begins, any CHAP
information in the
Flash will be hon-
ored, but it must be
updated in the
node records using
iscsiadm.
Open-iSCSI CHAP
management is not
supported in RHEL
6.2 and SLES 11
SP2.
CTRL+Q options
let you set unidi-
rectional and bidi-
rectional CHAP
only for boot tar-
gets. In both mod-
els, CHAP
information for boot
targets is always
stored in Flash.
aThe QLogic management applications are iscli (SANsurfer® iSCSI CLI) and qaucli (QConvergeConsole® CLI).
Table 1-1. Differences Between IOCTL and Open-iSCSI Driver Models (Continued)

Serial

No. Feature IOCTL-based Driver Open-iSCSI-based Driver Remarks