iSCSIADM: Cannot see iSCSI luns on server side

On the storage side , the LUNs are created. However you cannot see them on the server side. This post explains the steps needed to debug and fix the issue.



Issue list command to see if you can see the LUNs on the server side:

• iscsiadm list target -vS

If there are no LUNs listed, verify which discovery method is enabled

 

root@dat01:/# iscsiadm list discovery

Discovery:

        Static: disabled

        Send Targets: enabled

        iSNS: disabled

 

Verify which address is enabled in send targets discovery

 

 iscsiadm list discovery-address

Discovery Address: 10.129.195.209:3260

 

 

If the discovery-address is correct and you  you cannot still see the luns, do the following:

 

Check /var/adm/messages for any error message

Restart the iscsi service on storage side

Readd the address to send targets discovery as under:

iscsiadm remove discovery-address  10.129.195.209

root@dat01:/var/adm# iscsiadm list discovery-address

root@dat01:/var/adm# iscsiadm add discovery-address 10.129.195.209

root@dat01:/var/adm# iscsiadm list discovery-address

Discovery Address: 10.129.195.209:3260