During RDO Juno set up on Fedora 21 Workstation service target is deactivated on boot up, and tgtd is started (versus CentOS 7 installation procedure) , what requires some additional efforts to tune LVMiSCSI cinder back end on newest Fedora release. Actually, RDO Juno packstack multi node setup follows procedure posted at http://lxer.com/module/newswire/view/207415/index.html
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