iSCSI and DM Multipath IO issues on Xen guest

Issue

• None session of iscsiadm is been recognized

[root@localhost ~]# iscsiadm  -m  session  -P 3
iSCSI Transport Class version 2.0-870
version 6.2.0-873.2.el6
iscsiadm: No active sessions.

[root@localhost ~]# /etc/init.d/iscsi restart
Stopping iscsi:                                            [  OK  ]
Starting iscsi: iscsiadm: Could not login all leading-login portals
                                                           [  OK  ]
[root@localhost ~]# /etc/init.d/iscsid restart
Stopping iscsid:
Starting iscsid:                                           [  OK  ]
[root@localhost ~]# iscsiadm  -m  session
iscsiadm: No active sessions.

• The logs are like:

Aug  7 11:08:51 localhost iscsid: iscsid shutting down.
Aug  7 11:08:51 localhost kernel: iscsi: registered transport (tcp)
Aug  7 11:08:51 localhost kernel: iscsi: registered transport (iser)
Aug  7 11:08:51 localhost kernel: Chelsio T3 iSCSI Driver cxgb3i v2.0.0 (Jun. 2010)
Aug  7 11:08:51 localhost kernel: iscsi: registered transport (cxgb3i)
Aug  7 11:08:51 localhost kernel: Chelsio T4 iSCSI Driver cxgb4i v0.9.1 (Aug. 2010)
Aug  7 11:08:51 localhost kernel: iscsi: registered transport (cxgb4i)
Aug  7 11:08:51 localhost kernel: cnic: Broadcom NetXtreme II CNIC Driver cnic v2.5.13 (Sep 07, 2012)
Aug  7 11:08:51 localhost kernel: Broadcom NetXtreme II iSCSI Driver bnx2i v2.7.2.2 (Apr 26, 2012)
Aug  7 11:08:51 localhost kernel: iscsi: registered transport (bnx2i)
Aug  7 11:08:51 localhost iscsid: iSCSI logger with pid=2957 started!
Aug  7 11:08:51 localhost iscsid: iSCSI daemon with pid=2958 started!
Aug  7 11:08:52 localhost iscsid: Could not read discovery record for 172.16.30.101:3260.