How to Monitor an iSCSI Configuration

How to Monitor an iSCSI Configuration

  1. Become superuser.
  2. Display information about the iSCSI initiator.
    # iscsiadm list initiator-node
    
    Initiator node name: ign.1986-03.com.sun:01:0003ba4d233b.425c293c
    Initiator node alias: zzr1200
           Login Parameters (Default/Configured):
                 Header Digest: NONE/-
                 Data Digest: NONE/-
           Authentication Type: NONE
           RADIUS Server: NONE
           RADIUS access: unknown
           Configured Sessions: 1
    
  3. Display information about which discovery methods are in use.
    # iscsiadm list discovery
    
    Discovery:
       Static: enabled
       Send Targets: enabled
       iSNS: enabled
    
Example

The following example shows how to display the parameter settings for a specific iSCSI target.

# iscsiadm list target-param iqn.1992-08.com.abcstorage.sn.33592219
Target: iqn.1992-08.com.abcstorage:sn.33592219

The iscsiadm list target-param -v command displays the following information:

  • The authentication settings for the target
  • The default settings for the target login parameters
  • The configured value for each login parameter

The iscsiadm list target-param -v command displays the default parameter value before the / designator and the configured parameter value after the / designator. If you have not configured any parameters, the configured parameter value displays as a hyphen. For more information, see the following examples:

# iscsiadm list target-param -v eui.50060e8004275511
Target: eui 50060e8004275511
       Alias: -
       Bi-directional Authentication: disabled
       Authentication Type: NONE
       Login Parameters (Default/Configured):
             Data Sequence In Order: yes/-
             Data PDU In Order: yes/-
             Default Time to Retain: 20/-
             Default Time to Wait: 2/-
             Error Recovery Level: 0/-
             First Burst Length: 65536/-
             Immediate Data: yes/-
             Initial Ready To Transfer (R2T): yes/-
             Max Burst Length: 262144/-
             Max Outstanding R2T: 1/-
             Max Receive Data Segment Length: 65536/-
             Max Connections: 1/-
             Header Digest: NONE/-
             Data Digest: NONE/-
        Configured Sessions: 1

The following example output shows the parameters that were negotiated between the target and the initiator.

# iscsiadm list target -v eui.50060e8004275511
Target: eui.50060e8004275511
       TPGT: 1
       ISID: 4000002a0000
       Connections: 1
             CID: 0
             IP address (Local): 172.90.101.71:32813
             IP address (Peer): 172.90.101.40:3260
             Discovery Method: Static
             Login Parameters (Negotiated):
                   Data Sequence In Order: yes
                   Data PDU In order: yes
                   Default Time to Retain: 0
                   Default Time to Wait: 3
                   Error Recovery Level: 0
                   First Burst Length: 65536
                   Immediate Data: yes
                   Initial Ready To Transfer (R2T): yes
                   Max Burst Length: 262144
                   Max Outstanding R2T: 1
                   Max Receive Data Segment Length: 65536
                   Max Connections: 1
                   Header Digest: NONE
                   Data Digest: NONE

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