config/puppet-manifests/src/modules/platform/templates/multipath.conf.erb

defaults {
    user_friendly_names yes
    find_multipaths yes
}

blacklist {
    device {
        vendor "*"
    }
}

blacklist_exceptions {
    property "(SCSI_IDENT_|ID_WWN)"
    device {
        vendor "3PARdata"
    }
}