I recently had to configure iSCSI with multipathing on RHEL 6. It wasn’t too hard and these instructions will presumably work with other Redhat based versions & distros
It involves installing/configuring the iSCSI utilities and then installing/configuring Device-Mapper. Device-Mapper will automatically discover devices with multiple paths and creates a mpath device that can be used to load balance/failover between all the paths.
1.) Install iSCSI and Device-Mapper
# yum install iscsi-initiator-utils # yum install device-mapper-multipath
2.) Start iSCSI
# chkconfig iscsi on # chkconfig iscsid on # service iscsi start # service iscsid start
3.) Find your hosts IQN and Update your iSCSI Array
Each iSCSi device will have a iSCSI Qualified Name (IQN). This name is used to manage LUN masking on the iSCSI arrays.
# cat /etc/iscsi/initiatorname.iscsi
Once you have your IQN you then need to go to your iSCSI array and carve out the LUNs you plan…
View original post 637 more words