check_release_lvm_stateful
==========================
**Source code:** `check_release_lvm_stateful.py <https://chromium.googlesource.com/chromiumos/platform/factory/+/refs/heads/main/py/test/pytests/check_release_lvm_stateful.py>`_

Check if release image has enabled LVM stateful partition.

Description
-----------
This test checks whether Chrome OS release image has enabled LVM stateful
partition. The test fails if it has not enabled.

To run the check with shell script::

  #!/bin/sh

  root_dev="$(rootdev -s -d)"
  release_dev="${root_dev}p5"
  mount_pnt="$(mktemp -d)"
  chromeos_startup_path="${mount_pnt}"/sbin/chromeos_startup

  mount -o ro "${release_dev}" "${mount_pnt}"
  if grep -q 'USE_LVM_STATEFUL_PARTITION=1' "${chromeos_startup_path}"; then
    echo "Release image uses LVM stateful partition!"
  else
    echo "Release image uses EXT4 stateful partition!"
  fi

  umount "${mount_pnt}"
  rmdir "${mount_pnt}"

To run the check with gooftool::

  gooftool get_release_fs_type

Test Procedure
--------------
1. Mount the release rootfs.
2. Grep the flag `USE_LVM_STATEFUL_PARTITION` from
   `mount_point/sbin/chromeos_startup`.
3. Check if step 2 returns `True`.

Dependency
----------
`grep`

Examples
--------
To check if release image has enabled LVM stateful partition, add this to test
list::

  {
    "pytest_name": "check_release_lvm_stateful"
  }


Test Arguments
--------------
This test does not have any arguments.