We know that the AIX host has a feature about the iscsi link, when there is no data communication between the AIX host and storage, the host will disconnect from the storage, and when the data communication start next time, the link will be activated again.
1. According to the logs, we have to change the configuration of the "targets" file on the AIX host.
2. According to the iSCSI feature of AIX host above, we have to follow the procedure to configure the storage again
i. Remove all the mapped LUN from the AIX host
ii. Create a new AIX host on the ISM
iii. Add the initiator to the AIX host
iv. Map the LUN to the AIX host
v. Re-scan the LUN on the AIX server
At last, we can find the status of the initiator is "link up", and we can find the iSCSI disk on the AIX host as below: