Dell PowerVault TL2000 - Manual (Page 13)

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1) From the command line, type in ‘iscsi-ls’
This will list all the iSCSI devices that have sessions opened. Look for the duplicate Drive and Library
entries. (i.e., if you have four entries, two might be the tape drive (spi.1.0.0), and two might be for the
library (spi.1.0.1)
Each entry will have a unique Host ID associated with it (i.e., Host ID 65 might be for the first
spi.1.0.0, while Host ID 66 might be for the second spi.1.0.0 entry)
2) Select one of the Host ID’s that is associated for the drive, and one of the Host ID’s that is
associated for the libraries. (i.e., if the drive has Host ID 65 and 66, note ID 66; if the library has
Host ID’s 67 and 68, note ID 68
From the Linux command line, type ‘iscsi-kill-session –i 66
From the Linux command line, type ‘iscsi-kill-session –i 68
If you run the ‘iscsi-ls’ again, you should only see a single instance for the drive, and a single instance
for the library.
Note: every time you restart the iscsi services, all the sessions will be opened back up again. Also, the
session ID’s change, so it will be necessary to go back thru the steps above to kill the new iscsi sessions.
Avoiding duplicate iSCSI devices discovered by RH4
To avoid logging in to multiple devices that were identified in a iSCSI Discovery (i.e., when starting the
iSCSI services), make the following changes to your RedHat 4 iscsi.conf file located in the /etc directory.
Make sure you restart the service after making these changes.
# --------------------------
# Discovery Address Category
# --------------------------
DiscoveryAddress=192.168.1.133:3260
DiscoveryAddress=192.168.2.133:3260
Specify the IP address(s) and corresponding ports of the target devices that you want to discover.
Note: Even though you only specify these target devices, other devices might be discovered when
starting the service. An exclusion of everything that you do not want will be done next.
ENABLE/DISABLE TARGETS
# ----------------------
TargetName=iqn.1988-11.com.dell.2005c5:spi.0.0.0
Enabled=no
TargetName=iqn.1988-11.com.dell.2005c5:spi.0.0.1
Enabled=no
The iscsi.conf statements above will disable the individual targets that you do not want to log in to. In the
example above, the target that contains spi.0.0.0 is an LT04 tape drive, while the target that contains
0.0.1 is the device that represents the Medium Changer.
To verify that the correct target devices are removed (and the correct ones remain), ensure your iscsi
services are running, and enter ‘iscsi-ls’. It will provide you a listing of all the devices that were discovered
and enabled.
Viewing the status of your iSCSI connections
In ISCSI Web Manager interface, click the iSCSI connections, the Host Ports will show the status of each
iSCSI port you attempted to connect and the configuration state of all IP addresses. If connections are not
present, Check the following:
• Are all cables securely attached to each port on the host server and iSCSI to SAS bridge?
• Is TCP/IP correctly configured on all target host ports?
• Is CHAP set up correctly on both the host server and the iSCSI to SAS bridge?