Possibly not using user_data properly?

[FilBot3]

I seem to be having an issue with my user_data block defined per Instance OpenStack provider overrides. I'm attaching a volume per node, and then using user_data to format and add that volume to my LVM. However, it doesn't seem to be adding, or extending the volume, nor is there anything I know to search for showing a log.

config.vm.define 'splunk_standalone' do |cfg|
  cfg.vm.provider :openstack do |os, _override|
    os.server_name = 'splunk-standalone'
    os.floating_ip_pool = ENV['OPENSTACK_FLOATING_IP_POOL']
    os.security_groups = ['os_sg_splunk']
    os.networks = [{
      name: ENV['OPENSTACK_NETWORK_IDS'],
      address: '192.168.0.3'
    }]
    os.volumes = [{
      name: 'splunk-standalone-data'
    }]
    os.user_data = %(
      #!/bin/bash;
      set -x;
      sleep 10;
      parted /dev/vdb mklabel gpt;
      parted /dev/vdb mkpart primary 0% 100%;
      pvcreate /dev/vdb1;
      vgextend vg00 /dev/vdb1;
      lvextend -L +19G /dev/mapper/vg00-optlv00;
      resize2fs /dev/mapper/vg00-optlv00;
      sed -i 's/\(^.*\/dev\/vdb.*$\)/\#\1/' /etc/fstab;
      mount -a;
    ).gsub(/\s+/, ' ').strip
  end
  cfg.vm.provision 'chef_client' do |chef|
    chef.chef_server_url = 'http://192.168.0.2:4000/'
    chef.validation_key_path = 'chef-repo/keys/fake-key.pem'
    chef.environment = 'splunk_standalone'
    chef.add_role 'splunk_monitors'
    chef.add_recipe 'splunk::server'
    chef.node_name = 's_standalone'
    chef.client_key_path = '/vagrant/chef-repo/keys/s_standalone.pem'
    chef.encrypted_data_bag_secret_key_path = 'chef-repo/encrypted_data_bag_secret'
  end
end