iSCSI Device or Disk Is Not Available on the Local System

How to Troubleshoot iSCSI Device or Disk Unavailability

1. Become an administrator.
2. Identify the LUNs that were discovered on this target during enumeration.

   The –S option shows which LUNs were discovered on this target during enumeration.

   For example:

   # iscsiadm list target -S
   Target: iqn.2001-05.com.abcstorage:6-8a0900-37ad70401-bcfff02df8a421df-zzr1200-01
           TPGT: default
           ISID: 4000002a0000
           Connections: 1
           LUN: 0
               Vendor:  ABCSTOR
               Product: 0010 
               OS Device Name: /dev/rdsk/c3t34d0s2

3. Review the /var/adm/messages file to see if an error was reported.

   If you think a LUN should be listed but it is not, then check this log file.

4. Check the storage device's log files for errors.
5. Ensure that any storage device LUN masking is properly configured.