This article explains how to login iSCSI target.

Instructions

1. Discover available targets from a discovery portal :
   iscsiadm -m discovery -t sendtargets -p ipaddress

2. Log into a specific target:
   iscsiadm -m node -T targetname -p ipaddress -l

3. Log into all targets:
   iscsiadm -m node -l

4. Display a list of all current sessions logged in:
   iscsiadm -m session