First, to disable target:
# iscsiadm -m node -T iqn.2007-06.com.test.cluster1:storage.cluster1 --portal group_ip_addrr:3260 -u
Second, to delete the target’s record:
# iscsiadm -m node -o delete -T iqn.2007-06.com.test.cluster1:storage.cluster1 --portal group_ip_addrr:3260