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example_config.py
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example_config.py
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# SPDX-FileCopyrightText: Nir Soffer <nirsof@gmail.com>
# SPDX-License-Identifier: GPL-2.0-or-later
"""
Example userstorage configuration module.
"""
import userstorage
from userstorage import LoopDevice, Mount, File
import pytest
# Mark tests as xfail when the storage they need is missing.
userstorage.missing_handler = pytest.xfail
GiB = 1024**3
# Base directory for provisioned storage.
#
# This is the directory where backing files, symlinks to loop devices, and
# mount directories are created.
BASE_DIR = "/var/tmp/example-storage"
# Dictionary of backends.
#
# Here is an example configuration providing all builtin backend types. Note
# that 4k storage is defined as optional since creating loop device with 4k
# storgae is not supported on all environments and may be flaky in some
# supported environments.
BACKENDS = {
"block-512": LoopDevice(
base_dir=BASE_DIR,
name="block-512",
size=GiB,
sector_size=512,
),
"block-4k": LoopDevice(
base_dir=BASE_DIR,
name="block-4k",
size=GiB,
sector_size=4096,
required=False,
),
"mount-512-ext2": Mount(
LoopDevice(
base_dir=BASE_DIR,
name="mount-512-ext2",
size=GiB,
sector_size=512,
),
fstype="ext2",
),
"mount-512-ext4": Mount(
LoopDevice(
base_dir=BASE_DIR,
name="mount-512-ext4",
size=GiB,
sector_size=512,
),
fstype="ext4",
),
"mount-512-xfs": Mount(
LoopDevice(
base_dir=BASE_DIR,
name="mount-512-xfs",
size=GiB,
sector_size=512,
),
fstype="xfs",
),
"mount-4k-ext2": Mount(
LoopDevice(
base_dir=BASE_DIR,
name="mount-4k-ext2",
size=GiB,
sector_size=4096,
required=False,
),
fstype="ext2",
),
"mount-4k-ext4": Mount(
LoopDevice(
base_dir=BASE_DIR,
name="mount-4k-ext4",
size=GiB,
sector_size=4096,
required=False,
),
fstype="ext4",
),
"mount-4k-xfs": Mount(
LoopDevice(
base_dir=BASE_DIR,
name="mount-4k-xfs",
size=GiB,
sector_size=4096,
required=False,
),
fstype="xfs",
),
"file-512": File(
Mount(
LoopDevice(
base_dir=BASE_DIR,
name="file-512",
size=GiB,
sector_size=512,
)
)
),
"file-4k": File(
Mount(
LoopDevice(
base_dir=BASE_DIR,
name="file-4k",
size=GiB,
sector_size=4096,
required=False,
)
)
),
}