HP-UX iSCSI Software Initiator Support Guide (Edition 7)

• - The target IP address and port.
• - The target portal group tag.
• -C displays statistics for all connections of the specified session instance (ssn_inst); if a
connection identifier (cid) is specified, only the statistics for that connection will be displayed.
• -V displays negotiated login key information.
To display iscsiutil usage, use:
# iscsiutil
To issue an iSCSI NOP-OUT indicating the destination session and connection, use:
# iscsiutil [/dev/iscsi] -n -S <ssn_inst> [-C <cid> ] [-L <data-size>]
• where:
• -S provides an initiator session identifier instance (ssn_inst) on which the iSCSI NOP-OUT
is to be sent
• -C provides a specific connection identifier (cid) for the iSCSI NOP-OUT
• -L is the <data-size>, or number of bytes, to be used for the NOP-OUT. The valid range for
the data-size is 0 to 4096 bytes. The default data-size is 64 bytes.
5.4 iSCSI Transport Statistics
The iSCSI Software Initiator maintains a variety of transport statistics, which are accessible through
the iscsiutiltool. For a detailed listing and explanation of the iSCSI transport statistics see
Appendix B (page 42).
5.5 Diagnostic Messages
By default, the iSCSI Software Initiator logs all diagnostic messages to the Support Tools Manager
(STM) log files. STM can be used to view the diagnostic messages logged in the STM log files.
Event Monitoring Services (EMS) can be configured to automatically notify the system administrator
when diagnostic messages are logged by the iSCSI Software Initiator. However, STM does not
have the ability to display these messages. This will be correceted in a subsequent release of STM.
When that functionality is added, EMS can be configured to automatically notify the system
administrator when diagnostic messages are logged by the iSCSI Software Initiator.
In addition to logging all diagnostic messages to the STM log files, the iSCSI Software Initiator
logs some of the diagnostic messages to the /var/adm/syslog/syslog.log file.
For a detailed listing and explanation of messages that the iSCSI Software Initiator can generate,
see Appendix C (page 47).
5.6 iSCSI Software Initiator Daemons
5.6.1 iSCSI Software Initiator Name Resolution Daemon (iscsi_resolvd)
iscsi_resolvd is a user level daemon responsible for resolving a hostname to an IP address.
This daemon operates by receiving hostnames from the iSCSI Software Initiator and returning the
corresponding IP addresses to the iSCSI Software Initiator. This daemon is automatically started
from the iSCSI Software Initiator start-up script during HP-UX system start-up.
5.6.2 iSCSI Challenge-Handshake Authentication Protocol Daemon (iradd)
CHAP authentication for iSCSI uses the iradd daemon. The iradd daemon allows the iSCSI
Software Transport driver to communicate with a RADIUS server.
The iradd daemon helps the initiator authenticate targets. It is not used for Uni-directional CHAP
authentication, where the initiator is authenticated by the target.
30 Management