def setup_benchmark_env():
"""Prepare environment for benchmark.
"""
lvm.lvcreate(volume=benchmark_lv,
group=vg_name,
size_in_bytes=utils.size_to_bytes(total_volume))
fs_linux.blk_fs_create(device)
fs_linux.mount_filesystem(device, base_path, fs_type='ext4')
def _create_root_dir(container_dir, localdisk):
"""Prepares chrooted environment."""
# Create root directory structure (chroot base).
# container_dir/<subdir>
root_dir = os.path.join(container_dir, 'root')
already_initialized = fs_linux.blk_fs_test(localdisk['block_dev'])
if not already_initialized:
# Format the block device
fs_linux.blk_fs_create(localdisk['block_dev'])
_LOGGER.info('Creating container root directory: %s', root_dir)
# Creates directory that will serve as new root.
fs.mkdir_safe(fs.norm_safe(root_dir))
# Unshare the mount namespace
unshare.unshare(unshare.CLONE_NEWNS)
# Mount the container root volume
fs_linux.mount_filesystem(localdisk['block_dev'], root_dir)
return root_dir
