Brocade iSCSI Gateway Service Administrator's Guide (53-1000603-01, October 2007)

52 iSCSI Gateway Service Administrator’s Guide
53-1000603-01
Troubleshooting
B
Changes made to the iSCSI
database do not appear on
iSCSI hosts.
The DDSet has not been
enabled or the database has
not been committed.
Check the currently enabled DD Set using:
iscsiCfg - -show ddset
Make sure it is reported as enabled and committed.
Enable an appropriate DDSet using:
iscsiCfg - -enable ddset
Check for open transactions using:
iscsiCfg - -show transaction
Commit any open transactions using:
iscsiCfg - -commit all
After an iSCSI host logs out of
a target, it cannot log in to that
target again.
There is an inconsistency in the
iSCSI database.
Check using:
iscsiCfg - -show fabric
Make sure the aggregated state is in sync.
If it is not in sync, fix the inconsistency and perform a commit using:
iscsiCfg - -commit all
Cannot get GE ports to go to
Online state.
The GE ports are not connected
to gigabit ethernet interfaces.
Make sure the GbE ports are plugged into gigabit Ethernet interfaces.
The GE ports cannot be connected to ethernet or fast ethernet
interfaces.
Cannot set up mutual CHAP. A CHAP name that matches the
IQN of an iSCSI initiator is
treated differently in the CHAP
database.
When a CHAP name is set to the IQN of an iSCSI initiator, it will be used
for initiator CHAP during mutual CHAP login.
Multiple sessions are
established with the same
target.
All available ports are reported
by SendTargets processing, and
sessions are established for
each port to the same target
and LUNs.
This can be controlled by configuring the iSCSI host initiator and/or the
GbE port on the FC4-16IP blade to allow only one connection per
session. Also, if connection redirection is configured, it must be
disabled.
TABLE 4 Troubleshooting iSCSI connectivity (Continued)
Problem Cause Solution