self.create_lvm

in ebs/libraries/block_device.rb [170:184]

• 14 lines of code
• 7 McCabe index (conditional complexity)

  def self.create_lvm(raid_device, options)
    Chef::Log.info "creating LVM volume out of #{raid_device} with #{options[:disks].size} disks at #{options[:mount_point]}"
    unless lvm_physical_group_exists?(raid_device)
      exec_command("pvcreate #{raid_device}") or raise "Failed to create LVM physical disk for #{raid_device}"
    end
    unless lvm_volume_group_exists?(raid_device)
      exec_command("vgcreate #{lvm_volume_group(raid_device)} #{raid_device}") or raise "Failed to create LVM volume group for #{raid_device}"
    end
    unless lvm_volume_exits?(raid_device)
      unless exec_command_with_retries("lvcreate -l 100%FREE #{lvm_volume_group(raid_device)} -n #{File.basename(lvm_device(raid_device))}")
        exec_command("lvcreate -l 100%FREE #{lvm_volume_group(raid_device)} -n #{File.basename(lvm_device(raid_device))} -Z n") or raise "Failed to create the LVM volume at #{raid_device}"
      end
    end
  end