Create cinder volume and an instance, format and mount the volume

cinder-heat2.yaml

jenkins:
  type: OS::Nova::Server
    properties:
      image: { get_param: ImageID }
      flavor: m1.tiny
      networks:
        - network: { get_param: NetID }
      user_data_format: RAW
      user_data:
        str_replace:
          template: |
            #cloud-config
            write_files:
              - content: |
                  #!/bin/bash
                  voldata_id="%voldata_id%"
                  voldata_dev="/dev/disk/by-id/virtio-$(echo ${voldata_id} | cut -c -20)"
                  mkfs.ext4 ${voldata_dev}               
                  mkdir -pv /var/lib/jenkins
                  echo "${voldata_dev} /var/lib/jenkins ext4 defaults 1 2" >> /etc/fstab
                  mount /var/lib/jenkins
                path: /tmp/format-disks
                permissions: '0700'
            runcmd:
              - /tmp/format-disks
          params:
            "%voldata_id%": { get_resource: jenkins_data }
jenkins_data:
  type: OS::Cinder::Volume
  properties:
    size: 50
jenkins_data_att:
  type: OS::Cinder::VolumeAttachment
  properties:
    instance_uuid: { get_resource: jenkins }
    volume_id: { get_resource: jenkins_data}