While creating new SR on XS 6.0.2 on EMC VNX 5500 will show one host with 1 active path rest all have all the active path . When multipath -ll is run it will also show one path . This shows that all the path is not having access to the lun .
From the host which has an issue logoff all the active path
iscsiadm -m node -U all and then logback in iscsiadm -m node -L all.
Restart the multipathd service /etc/init.d/multipathd restart. This will bring all the path active on the host.
Installed brand new XenServer and try to run ISCSIADM command it will throw message "iscsid is not running. Could not start it up automatically using the startup command in /etc/iscsi/iscsid.start
To fix it just run new SR wizard for ISCSI over LVM and
then try to run the discovery again it will list all the targets . This test is conducted on EMC VNX 5500. This process basically make open-iscsi service is called by and configured by XAPI. When using the New Storage wizard, it will create files /etc/iscsi such as initiator name, send_targets directory. 
In order to create new SR on VNX 5500 for XenServer 6.0.2 , you need to ensure that all the targets are logged in. The process is A) Run SR wizard but do not create SR 2) Logged all the targets 3) Create the SR again using SR wizard . This has been explained in following blogs of mine.
Thanks to my college and open-iscsi.
In order to install OMSA 6.5 on XS 6.0.2 , we need to get latest ISO from Dell site. Connect this ISO to the Dell Server via virtual CD ROM
Mount the CD-ROM on XenServer and run the install.sh script to start OMSA agent on XS.
This will install the require package
Insure the ports are open. By default installation does open the require ports
Start the server service
And point the URL to https://<HostIP>: 1311
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