part of /lib/rubber/recipes/rubber/volumes.rb

gistfile1.rb

namespace :rubber do

  desc <<-DESC
    Sets up persistent volumes in the cloud
    All volumes defined in rubber.yml will be created if necessary, and attached/mounted on their associated instances
  DESC
  required_task :setup_volumes do
    rubber_instances.filtered.each do |ic|
      env = rubber_cfg.environment.bind(ic.role_names, ic.name)
      created_vols = []
      vol_specs = env.volumes || []
      vol_specs.each do |vol_spec|
        created_vols << setup_volume(ic, vol_spec)
      end
      created_vols.compact!

      created_parts = []
      partition_specs = env.local_volumes || []
      partition_specs.each do |partition_spec|
        created_parts << setup_partition(ic, partition_spec)
      end
      created_parts.compact!
      zero_partitions(ic, created_parts)
      created_vols += created_parts
      
      created_vols = created_vols.compact.uniq
      raid_specs = env.raid_volumes || []
      raid_volume_list = raid_specs.collect {|vol| vol["source_devices"]}.join(" ")
      raid_specs.each do |raid_spec|
        # we want to format if we created the ec2 volumes, or if we don't have any
        # ec2 volumes and are just creating raid array from ephemeral stores
        format = raid_spec['source_devices'].all? {|dev| created_vols.include?(dev.gsub("xv","s"))}
        setup_raid_volume(ic, raid_spec, format, raid_volume_list)
      end

      lvm_volume_group_specs = env.lvm_volume_groups || []
      lvm_volume_group_specs.each do |lvm_volume_group_spec|
        setup_lvm_group(ic, lvm_volume_group_spec)
      end
    end
  end