WWN number and ISCSI

#  yum install device-mapper-multipath
#  multipath -ll
# /sbin/mpathconf --enable
# multipath -ll
# systemctl status multipathd
# systemctl start multipathd
# systemctl status multipathd
# yum install fcoe-utils
# yum install lldpad
#  cp /etc/fcoe/cfg-ethx   /etc/fcoe/cfg-eno51
#  cp /etc/fcoe/cfg-ethx   /etc/fcoe/cfg-eno52

Change "DCB_REQUIRED="no"" in below files:-

# vi cfg-eno51
# vi cfg-eno52


# systemctl status lldpad
# systemctl start lldpad
# systemctl status fcoe
# systemctl start fcoe
# systemctl status fcoe
# multipath -ll

# systemctl start multipathd
# systemctl status multipathid
# systemctl status multipathd

# cat /sys/class/fc_host/host*/port_name


echo "- - -" > /sys/class/scsi_host/host2/scan
echo "1" > /sys/class/fc_host/host1/issue_lip
echo "1" > /sys/class/fc_host/host2/issue_lip
================================================================================
multipath/iscsi
==============================================================================
===================================
server side configuration
===================================
# yum install targetcli
/> ls
/> /backstores/block create testlun1 /dev/sde============= cerate a test LUN
/> /iscsi create
/> iscsi/iqn.2003-01.org.linux-iscsi.gluster-02.x8664:sn.2d87862c9a72/tpg1/luns(iqn no of tartget server ) create /backstores/block/testlun1
/> iscsi/iqn.2003-01.org.linux-iscsi.gluster-02.x8664:sn.2d87862c9a72/tpg1/acls(iqn no of target server ) create iqn.1994-05.com.redhat:ab36ed2159e (iqn no of client server)
==============================================================
Client side configuration
===========================
# iscsiadm -m discovery -t sendtargets -p 10.25.214.11 (Discover a targer iscsi)
# iscsiadm -m node -T iqn.2003-01.org.linux-iscsi.gluster-02.x8664:sn.2d87862c9a72 -p 10.25.214.11 -l (longin to targer iscsi)
======================================
iqn no file in server and client side
======================================
cat /etc/iscsi/initiatorname.iscsi