old_contents: import pytest
  import rancherostest.util as u
  import subprocess
  
  
  ssh_command = ['./scripts/ssh', '--qemu']
  
  
  @pytest.fixture(scope="module")
  def qemu(request):
      return u.run_qemu(request, ['--no-format'])
  
  
  @pytest.mark.timeout(40)
  def test_ros_install_on_formatted_disk(qemu):
      assert qemu is not None
      u.wait_for_ssh(ssh_command)
      subprocess.check_call(ssh_command + ['sudo', 'mkfs.ext4', '/dev/vda'],
                            stderr=subprocess.STDOUT, universal_newlines=True)
  
      subprocess.check_call(ssh_command + ['sudo', 'ros', 'install', '-f', '--no-reboot', '-d', '/dev/vda',
                                           '-i', 'rancher/os:v0.4.0-dev-test.135'],
                            stderr=subprocess.STDOUT, universal_newlines=True)
  
      subprocess.call(ssh_command + ['sudo', 'reboot'],
                      stderr=subprocess.STDOUT, universal_newlines=True)
  
      u.wait_for_ssh(ssh_command)
  
new_contents: import pytest
  import rancherostest.util as u
  import subprocess
  
  
  ssh_command = ['./scripts/ssh', '--qemu']
  
  
  @pytest.fixture(scope="module")
  def qemu(request):
      return u.run_qemu(request, ['--no-format'])
  
  
  @pytest.mark.timeout(40)
  def test_ros_install_on_formatted_disk(qemu):
      assert qemu is not None
      u.wait_for_ssh(ssh_command)
      subprocess.check_call(ssh_command + ['sudo', 'mkfs.ext4', '/dev/vda'],
                            stderr=subprocess.STDOUT, universal_newlines=True)
  
      subprocess.check_call(ssh_command + ['sudo', 'ros', 'install', '-f', '--no-reboot', '-d', '/dev/vda',
                                           '-i', 'rancher/os:v0.4.1'],
                            stderr=subprocess.STDOUT, universal_newlines=True)
  
      subprocess.call(ssh_command + ['sudo', 'reboot'],
                      stderr=subprocess.STDOUT, universal_newlines=True)
  
      u.wait_for_ssh(ssh_command)
  
subject: update rancher/os image version to latest release