7 – Troubleshooting
Troubleshooting Problems and Solutions
7-2
IS0054602-00 B
S
SANsurfer iSCSI HBA Manager Tools
SANsurfer iSCSI HBA Manager provides the following diagnostic tools for
managing iSCSI HBAs:
Pinging a Target.
Pinging verifies the connectivity between an HBA port
and a device port.
Viewing the ARP Log.
The address resolution protocol (ARP) cache keeps
a record of host port connections with other hardware (such as targets) on
the network.
Viewing the Connection Error Log.
The connection error log lists the 100
latest connection errors for an HBA port, thereby providing details about
connection problems with a device.
Read/Write Buffer Test.
The read/write buffer test sends specified data
through the SCSI Write Buffer command to a target device (disk or tape). It
then reads the data back through the SCSI Read Buffer command and
compares the data for errors. The test also compares the link status of the
device before the read/write buffer test. If errors occur, the test indicates a
broken or unreliable link between the adapter and the device.
Internal Loopback Test.
The internal loopback test sends data through the
QLA4
xxx
HBA’s internal wiring. (It sends a message to itself without leaving
the HBA.) This test does not test the QLA4
xxx
HBA connector.
External Loopback Test.
A special loop cable is required for this test. The
external loopback test tests the QLA4
xxx
HBA connector. More specifically,
the external loopback test transmits and receives (loopback) the specified
data and checks for the frame CRC, disparity, and length errors.
For details on using these tools, refer to
Section 6
,
Performing Diagnostics
.
Troubleshooting Problems and Solutions
This section provides troubleshooting problems and solutions. Refer to the
associated
readme.txt
file for the latest problems and solutions (see
“Related
Documents” on page 1-3
). Problem categories include:
“Installation Issues” on page 7-3
“User Interface and Remote Agent Issues” on page 7-4
“Functional Issues” on page 7-9
