def test_large_file(nydus_anchor, compressor, backend, amplified_size):
_tmp_dir = tempfile.TemporaryDirectory(dir=nydus_anchor.workspace)
large_file_dir = _tmp_dir.name
dist = Distributor(large_file_dir, 3, 3)
dist.generate_tree()
dist.put_single_file(Size(20, Unit.MB))
dist.put_single_file(Size(10891, Unit.KB))
dist.put_multiple_files(10, Size(2, Unit.MB))
dist.put_multiple_files(10, Size(4, Unit.MB))
image = RafsImage(nydus_anchor, large_file_dir, "bs_large", "blob_large")
image.set_backend(backend).create_image(compressor=compressor)
rafs_conf = (RafsConf(nydus_anchor,
image).enable_rafs_blobcache().amplify_io(
amplified_size).set_rafs_backend(backend,
image=image))
rafs = RafsMount(nydus_anchor, image, rafs_conf)
rafs.thread_num(4).mount()
workload_gen = WorkloadGen(nydus_anchor.mount_point, large_file_dir)
workload_gen.setup_workload_generator()
workload_gen.torture_read(8, 5)
workload_gen.finish_torture_read()
assert not workload_gen.io_error
rafs.umount()
image.clean_up()
def test_specified_prefetch(
nydus_anchor: NydusAnchor,
rafs_conf: RafsConf,
nydus_scratch_image: RafsImage,
backend,
):
"""
description:
Nydusd can have a list including files and directories input when started.
Then it can prefetch files from backend per as to the list.
"""
rafs_conf.set_rafs_backend(backend)
rafs_conf.enable_fs_prefetch(prefetch_all=True)
rafs_conf.enable_rafs_blobcache()
rafs_conf.dump_rafs_conf()
dist = Distributor(nydus_scratch_image.rootfs(), 8, 2)
dist.generate_tree()
dirs = dist.put_directories(20)
dist.put_multiple_files(100, Size(64, Unit.KB))
dist.put_symlinks(30)
dist.put_hardlinks(20)
dist.put_multiple_files(40, Size(64, Unit.KB))
dist.put_single_file(Size(3, Unit.MB), name="test")
nydus_scratch_image.set_backend(backend).create_image()
prefetching_files = dirs
prefetching_files += dist.files[:-10]
prefetching_files += dist.dirs[:-5]
prefetching_files += dist.symlinks[:-10]
# Fuzz
prefetching_files.append("/a/b/c/d")
prefetching_files.append(os.path.join("/", "f/g/h/"))
specified_dirs = " ".join(
[os.path.join("/", d) for d in prefetching_files])
rafs = RafsMount(nydus_anchor, nydus_scratch_image, rafs_conf)
rafs.prefetch_files(specified_dirs).mount()
wg = WorkloadGen(nydus_anchor.mount_point, nydus_scratch_image.rootfs())
nc = NydusAPIClient(rafs.get_apisock())
wg.setup_workload_generator()
blobcache_metrics = nc.get_blobcache_metrics()
wg.torture_read(5, 10)
while blobcache_metrics["prefetch_workers"] != 0:
time.sleep(0.5)
blobcache_metrics = nc.get_blobcache_metrics()
begin = nc.get_backend_metrics()["read_amount_total"]
time.sleep(1)
end = nc.get_backend_metrics()["read_amount_total"]
assert end == begin
wg.finish_torture_read()
def test_blobcache_recovery(
nydus_anchor: NydusAnchor,
rafs_conf: RafsConf,
nydus_scratch_image: RafsImage,
):
rafs_conf.set_rafs_backend(Backend.BACKEND_PROXY)
rafs_conf.enable_fs_prefetch()
rafs_conf.enable_rafs_blobcache()
rafs_conf.dump_rafs_conf()
dist = Distributor(nydus_scratch_image.rootfs(), 8, 2)
dist.generate_tree()
dirs = dist.put_directories(20)
dist.put_multiple_files(100, Size(64, Unit.KB))
dist.put_symlinks(30)
dist.put_hardlinks(20)
dist.put_multiple_files(40, Size(64, Unit.KB))
dist.put_single_file(Size(3, Unit.MB), name="test")
nydus_scratch_image.set_backend(Backend.BACKEND_PROXY).create_image()
rafs = RafsMount(nydus_anchor, nydus_scratch_image, rafs_conf)
rafs.prefetch_files("/").mount()
wg = WorkloadGen(nydus_anchor.mount_point, nydus_scratch_image.rootfs())
wg.setup_workload_generator()
wg.torture_read(4, 4)
# Hopefully, prefetch can be done in 5 secondes.
time.sleep(5)
wg.finish_torture_read()
rafs.umount()
rafs2 = RafsMount(nydus_anchor, nydus_scratch_image, rafs_conf)
rafs2.mount()
wg.torture_read(4, 4)
time.sleep(0.5)
nc = NydusAPIClient(rafs2.get_apisock())
begin = nc.get_backend_metrics()["read_amount_total"]
time.sleep(1)
end = nc.get_backend_metrics()["read_amount_total"]
assert end == begin == 0
wg.finish_torture_read()
def test_syscalls(
nydus_anchor: NydusAnchor,
nydus_scratch_image: RafsImage,
rafs_conf: RafsConf,
):
syscall_helper = "framework/test_syscalls"
ret, _ = utils.execute(
["gcc", "framework/test_syscalls.c", "-o", syscall_helper],
shell=False,
print_output=True,
)
assert ret
dist = Distributor(nydus_scratch_image.rootfs(), 2, 2)
dist.generate_tree()
dist.put_single_file(Size(8, Unit.KB),
pos=nydus_scratch_image.rootfs(),
name="xattr_no_kv")
dist.put_single_file_with_xattr(
Size(8, Unit.KB),
("trusted.nydus.key", ""),
pos=nydus_scratch_image.rootfs(),
name="xattr_empty_value",
)
dist.put_single_file_with_xattr(
Size(8, Unit.KB),
("trusted.nydus.key", "1234567890"),
pos=nydus_scratch_image.rootfs(),
name="xattr_insufficient_buffer",
)
nydus_scratch_image.set_backend(Backend.BACKEND_PROXY).create_image()
rafs_conf.enable_xattr().set_rafs_backend(Backend.BACKEND_PROXY)
rafs_conf.dump_rafs_conf()
rafs = RafsMount(nydus_anchor, nydus_scratch_image, rafs_conf)
rafs.mount()
for no in [58]:
ret, _ = utils.execute(
[syscall_helper, nydus_anchor.mount_point,
str(no)],
shell=False,
print_output=True,
)
assert ret
def test_file_tail(nydus_anchor: NydusAnchor, nydus_scratch_image: RafsImage,
backend):
"""
description: Read data from file tail
- Create several files of different sizes
- Punch hole to each file of which some should have hole tail
- Create rafs image from test scratch directory.
- Mount rafs
- Do some test.
"""
file_size_list = [
Size(1, Unit.KB),
Size(6, Unit.KB),
Size(2, Unit.MB),
Size(10034, Unit.KB),
]
file_list = []
dist = Distributor(nydus_anchor.scratch_dir, 2, 2)
dist.generate_tree()
for f_s in file_size_list:
f_name = dist.put_single_file(f_s)
file_list.append(f_name)
# Punch hole
with utils.pushd(nydus_anchor.scratch_dir):
with open(f_name, "a+b") as f:
fallocate(
f,
f_s.B - 500,
1000,
mode=FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE,
)
nydus_scratch_image.set_backend(backend).create_image()
rafs_conf = RafsConf(nydus_anchor, nydus_scratch_image)
rafs_conf.set_rafs_backend(backend, image=nydus_scratch_image)
rafs = RafsMount(nydus_anchor, nydus_scratch_image, rafs_conf)
rafs.mount()
with utils.pushd(nydus_anchor.mount_point):
for name in file_list:
with open(name, "rb") as f:
size = os.stat(name).st_size
f.seek(size - 300)
buf = f.read(1000)
assert len(buf) == 300
wg = WorkloadGen(nydus_anchor.mount_point, nydus_scratch_image.rootfs())
for f in file_list:
wg.verify_single_file(os.path.join(nydus_anchor.mount_point, f))
assert wg.io_error == False
def test_stargz(
nydus_anchor: NydusAnchor,
rafs_conf: RafsConf,
nydus_scratch_image: RafsImage,
):
"""
Example command:
stargzify file:`pwd`/foo.tar.gz foo.stargz
"""
intermediator = "tmp.tar.gz"
stargz_image = "tmp.stargz"
dist = Distributor(nydus_scratch_image.rootfs(), 4, 4)
dist.generate_tree()
dirs = dist.put_directories(20)
dist.put_multiple_files(100, Size(64, Unit.KB))
dist.put_symlinks(30)
dist.put_multiple_files(10, Size(4, Unit.MB))
dist.put_hardlinks(20)
dist.put_single_file(Size(3, Unit.MB), name="test")
try:
shutil.rmtree("origin")
except Exception:
pass
shutil.copytree(nydus_scratch_image.rootfs(), "origin", symlinks=True)
utils.write_tar_gz(nydus_scratch_image.rootfs(), intermediator)
cmd = ["framework/bin/stargzify", f"file:{intermediator}", stargz_image]
utils.execute(cmd)
toc = utils.parse_stargz(stargz_image)
image = RafsImage(
nydus_anchor,
toc,
"bootstrap_scratched",
"blob_scratched",
clear_from_oss=True,
)
# This is a trick since blob name is usually a temp file created when RafsImage instantiated.
# framework will upload stargz to oss.
image.blob_abs_path = stargz_image
image.set_backend(Backend.OSS).set_param(
"blob-id", uuid.uuid4()).create_image(from_stargz=True)
rafs_conf.set_rafs_backend(Backend.OSS)
rafs_conf.enable_rafs_blobcache(is_compressed=True)
rafs = RafsMount(nydus_anchor, image, rafs_conf)
rafs.mount()
wg = WorkloadGen(nydus_anchor.mount_point, "origin")
wg.verify_entire_fs()
wg.setup_workload_generator()
wg.torture_read(4, 4)
wg.finish_torture_read()
assert not wg.io_error
def test_whiteout(nydus_anchor, rafs_conf, whiteout_spec):
_td_1 = tempfile.TemporaryDirectory(dir=nydus_anchor.workspace)
_td_2 = tempfile.TemporaryDirectory(dir=nydus_anchor.workspace)
parent_rootfs = _td_1.name
upper_rootfs = _td_2.name
whiteout = Whiteout(whiteout_spec)
parent_image = RafsImage(nydus_anchor, parent_rootfs, "parent_bs",
"parent_blob")
dist_parent = Distributor(parent_rootfs, 6, 4)
dist_parent.generate_tree()
dist_parent.put_directories(20)
dist_parent.put_multiple_files(50, Size(32, Unit.KB))
dist_parent.put_symlinks(30)
dist_parent.put_hardlinks(20)
to_be_removed = dist_parent.put_single_file(Size(7, Unit.KB))
layered_image = RafsImage(nydus_anchor, upper_rootfs, "bs", "blob")
dist_upper = Distributor(upper_rootfs, 3, 5)
dist_upper.generate_tree()
dist_upper.put_multiple_files(27, Size(3, Unit.MB))
dist_upper.put_symlinks(5)
# `to_be_removed` should look like `a/b/c`
whiteout.whiteout_one_file(upper_rootfs, to_be_removed)
# Put a whiteout file that does not hide any file from lower layer
whiteout.whiteout_one_file(upper_rootfs, "i/am/troublemaker/foo")
dir_to_be_whiteout_opaque = dist_parent.dirs[randint(
0,
len(dist_parent.dirs) - 1)]
# `dir_to_be_removed` should look like `a/b/c`
whiteout.whiteout_opaque_directory(upper_rootfs, dir_to_be_whiteout_opaque)
dist_parent.put_directories(1)
dir_to_be_removed = dist_parent.dirs[-1]
whiteout.whiteout_one_dir(upper_rootfs, dir_to_be_removed)
parent_image.set_backend(Backend.OSS).create_image()
layered_image.set_backend(
Backend.OSS).whiteout_spec(whiteout_spec).create_image(
parent_image=parent_image)
rafs_conf.set_rafs_backend(Backend.OSS)
nydus_anchor.mount_overlayfs(
[layered_image.rootfs(), parent_image.rootfs()])
rafs = RafsMount(nydus_anchor, layered_image, rafs_conf)
rafs.mount()
wg = WorkloadGen(nydus_anchor.mount_point, nydus_anchor.overlayfs)
assert not os.path.exists(
os.path.join(nydus_anchor.mount_point, to_be_removed))
assert not os.path.exists(
os.path.join(nydus_anchor.mount_point, dir_to_be_removed))
files_under_opaque_dir = os.listdir(
os.path.join(nydus_anchor.mount_point, dir_to_be_whiteout_opaque))
# If opaque dir has files, only file from lower layer will be hidden.
if len(files_under_opaque_dir) != 0:
upper_files = os.listdir(
os.path.join(upper_rootfs, dir_to_be_whiteout_opaque))
for f in files_under_opaque_dir:
assert f in upper_files
assert wg.verify_entire_fs()
