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_build_image(nydus_anchor, nydus_scratch_image: RafsImage,
rafs_conf: RafsConf):
"""
title: Build nydus image
description: Build nydus image from rootfs generating proper bootstrap and
blob
pass_criteria:
- Image can successfully builded and mounted
- Rafs can be unmounted and do a small account of read io and attr
operation
- Try let image builder upload blob itself.
"""
dist = Distributor(nydus_scratch_image.rootfs(), 80, 1)
dist.generate_tree()
dist.put_directories(100)
dist.put_hardlinks(90)
dist.put_symlinks(200)
dist.put_multiple_files(random.randint(20, 28), Size(10, Unit.MB))
dist.put_multiple_chinese_files(random.randint(20, 28), Size(20, Unit.KB))
Whiteout().whiteout_one_file(nydus_scratch_image.rootfs(),
"i/am/troublemaker/foo")
nydus_scratch_image.set_backend(Backend.BACKEND_PROXY).create_image()
rafs_conf.set_rafs_backend(backend_type=Backend.BACKEND_PROXY)
rafs_conf.dump_rafs_conf()
rafs = RafsMount(nydus_anchor, nydus_scratch_image, rafs_conf)
wg = WorkloadGen(nydus_anchor.mount_point, nydus_scratch_image.rootfs())
rafs.mount()
assert wg.verify_entire_fs()
rafs.umount()
def test_prefetch_with_cache(
nydus_anchor: NydusAnchor,
nydus_scratch_image: RafsImage,
nydus_scratch_parent_image: RafsImage,
rafs_conf: RafsConf,
):
parent_rootfs = nydus_scratch_parent_image.rootfs()
upper_rootfs = nydus_scratch_image.rootfs()
rafs_conf.enable_validation()
rafs_conf.set_rafs_backend(Backend.OSS)
rafs_conf.enable_rafs_blobcache()
rafs_conf.enable_fs_prefetch(threads_count=4, merging_size=512 * 1024)
rafs_conf.dump_rafs_conf()
dist_parent = Distributor(parent_rootfs, 6, 4)
dist_parent.generate_tree()
dist_parent.put_directories(20)
dist_parent.put_multiple_files(100, Size(64, Unit.KB))
dist_parent.put_symlinks(30)
dist_parent.put_hardlinks(20)
dist_upper = Distributor(upper_rootfs, 3, 8)
dist_upper.generate_tree()
dist_upper.put_multiple_files(27, Size(3, Unit.MB))
dist_upper.put_symlinks(5)
# hint_files_parent = dist_parent.put_multiple_files(1000, Size(8, Unit.KB))
# hint_files_parent = [os.path.join(parent_rootfs, p) for p in hint_files_parent]
# hint_files_parent = "\n".join(hint_files_parent)
nydus_scratch_parent_image.set_backend(Backend.OSS).create_image(
readahead_policy="fs", readahead_files="/".encode())
hint_files = dist_upper.put_multiple_files(1000, Size(8, Unit.KB))
hint_files.extend(dist_upper.put_multiple_empty_files(200))
hint_files = [os.path.join("/", p) for p in hint_files]
hint_files = "\n".join(hint_files)
nydus_scratch_image.set_backend(Backend.OSS).create_image(
parent_image=nydus_scratch_parent_image,
readahead_policy="fs",
readahead_files=hint_files.encode(),
)
nydus_anchor.mount_overlayfs(
[nydus_scratch_image.rootfs(),
nydus_scratch_parent_image.rootfs()])
rafs = RafsMount(nydus_anchor, nydus_scratch_image, rafs_conf)
rafs.thread_num(5).mount()
workload_gen = WorkloadGen(nydus_anchor.mount_point,
nydus_anchor.overlayfs)
workload_gen.setup_workload_generator()
assert workload_gen.verify_entire_fs()
workload_gen.torture_read(5, 20)
workload_gen.finish_torture_read()
def test_meta(nydus_anchor: NydusAnchor, rafs_conf: RafsConf,
nydus_scratch_image: RafsImage):
anchor = nydus_anchor
rafs_conf.set_rafs_backend(Backend.BACKEND_PROXY).enable_rafs_blobcache()
rafs_conf.dump_rafs_conf()
dist = Distributor(nydus_scratch_image.rootfs(), 8, 5)
dist.generate_tree()
xattr_verifier = verifier.XattrVerifier(anchor.mount_point, dist)
xattr_verifier.scratch(nydus_scratch_image.rootfs())
symlink_verifier = verifier.SymlinkVerifier(anchor.mount_point, dist)
symlink_verifier.scratch()
# Do some meta operations on scratch dir before creating rafs image file.
# Use scratch dir as image source dir as we just prepared test meta into it.
nydus_scratch_image.set_backend(Backend.BACKEND_PROXY).create_image()
rafs = RafsMount(anchor, nydus_scratch_image, rafs_conf)
rafs.thread_num(4).mount()
assert rafs.is_mounted()
xattr_verifier.verify(anchor.mount_point)
symlink_verifier.verify(anchor.mount_point, nydus_scratch_image.rootfs())
workload_gen = WorkloadGen(anchor.mount_point,
nydus_scratch_image.rootfs())
workload_gen.setup_workload_generator()
workload_gen.torture_read(10, 3)
workload_gen.finish_torture_read()
assert workload_gen.io_error == False
assert anchor.check_nydusd_health()
def test_layered_rebuild(
nydus_anchor,
nydus_scratch_image: RafsImage,
nydus_scratch_parent_image: RafsImage,
rafs_conf: RafsConf,
backend,
):
"""
title: Layered image rebuild
description:
- Parent and upper have files whose contents are exactly the same.
- Use files stats to check if file is overlayed.
- Files with the same name but different modes.
- Files with xattr in parent should be shadowed.
pass_criteria:
- Mount successfully.
- No data corruption.
"""
rafs_conf.set_rafs_backend(backend)
rafs_conf.enable_rafs_blobcache()
rafs_conf.dump_rafs_conf()
parent_rootfs = nydus_scratch_parent_image.rootfs()
upper_rootfs = nydus_scratch_image.rootfs()
nydus_anchor.mount_overlayfs(
[nydus_scratch_image.rootfs(),
nydus_scratch_parent_image.rootfs()])
shared_files = []
dist_parent = Distributor(parent_rootfs, 6, 4)
dist_parent.generate_tree()
shared_files.extend(dist_parent.put_multiple_files(100, Size(64, Unit.KB)))
shared_files.extend(dist_parent.put_symlinks(30))
shared_files.extend(dist_parent.put_hardlinks(30))
xattr_verifier = XattrVerifier(parent_rootfs, dist_parent)
Whiteout.mirror_files(shared_files, parent_rootfs, upper_rootfs)
xattr_verifier.scratch(parent_rootfs)
nydus_scratch_parent_image.set_backend(backend).create_image()
nydus_scratch_image.set_backend(backend).create_image(
parent_image=nydus_scratch_parent_image)
rafs = RafsMount(nydus_anchor, nydus_scratch_image, rafs_conf)
rafs.mount()
workload_gen = WorkloadGen(nydus_anchor.mount_point,
nydus_anchor.overlayfs)
workload_gen.setup_workload_generator()
xattr_verifier.verify(nydus_anchor.mount_point)
assert workload_gen.verify_entire_fs()
workload_gen.torture_read(5, 4)
workload_gen.finish_torture_read()
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_prefetch_with_cache(
nydus_anchor,
nydus_scratch_image: RafsImage,
rafs_conf: RafsConf,
thread_cnt,
compressor,
is_cache_compressed,
):
"""
title: Prefetch from various backend
description:
- Enable rafs backend blob cache, as it is disabled by default
pass_criteria:
- Rafs can be mounted.
- Rafs can be unmounted.
"""
rafs_conf.enable_rafs_blobcache(is_compressed=is_cache_compressed)
rafs_conf.set_rafs_backend(Backend.BACKEND_PROXY, prefix="object_prefix/")
rafs_conf.enable_fs_prefetch(threads_count=4,
bandwidth_rate=Size(40, Unit.MB).B)
rafs_conf.dump_rafs_conf()
dist = Distributor(nydus_scratch_image.rootfs(), 4, 4)
dist.generate_tree()
dist.put_directories(20)
dist.put_multiple_files(40, Size(3, Unit.MB))
dist.put_hardlinks(6)
dist.put_multiple_chinese_files(random.randint(20, 28), Size(20, Unit.KB))
nydus_scratch_image.set_backend(Backend.BACKEND_PROXY,
prefix="object_prefix/").create_image(
compressor=compressor,
readahead_policy="fs",
readahead_files="/".encode(),
)
rafs = RafsMount(nydus_anchor, nydus_scratch_image, rafs_conf)
rafs.thread_num(4).mount()
nc = NydusAPIClient(rafs.get_apisock())
workload_gen = WorkloadGen(nydus_anchor.mount_point,
nydus_scratch_image.rootfs())
m = nc.get_blobcache_metrics()
time.sleep(0.3)
assert m["prefetch_data_amount"] != 0
workload_gen.setup_workload_generator()
workload_gen.torture_read(thread_cnt, 10)
assert NydusAnchor.check_nydusd_health()
workload_gen.finish_torture_read()
assert not workload_gen.io_error
# In this way, we can check if nydusd is crashed.
assert rafs.is_mounted()
rafs.umount()
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_blob_prefetch(nydus_anchor: NydusAnchor,
nydus_scratch_image: RafsImage, readahead_policy):
"""
description:
For rafs, there are two types of prefetching.
1. Prefetch files from fs-layer, which means each file is prefetched one by one.
2. Prefetch directly from backend/blob layer, which means a range will be fetched from blob
"""
# Try to delete any access log since if it present, bootstrap blob prefetch won't work.
utils.execute("rm -rf *.access", shell=True)
dist = Distributor(nydus_scratch_image.rootfs(), 8, 2)
dist.generate_tree()
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))
utils.clean_pagecache()
hint_files = dist.files[-40:]
hint_files.extend(dist.symlinks[-20:])
hint_files = [os.path.join("/", p) for p in hint_files]
hint_files = "\n".join(hint_files)
nydus_scratch_image.set_backend(Backend.LOCALFS).create_image(
readahead_policy=readahead_policy,
readahead_files=hint_files.encode(),
)
rafs_conf = RafsConf(nydus_anchor, nydus_scratch_image)
rafs_conf.set_rafs_backend(Backend.LOCALFS, image=nydus_scratch_image)
rafs_conf.enable_records_readahead(interval=1)
rafs_conf.dump_rafs_conf()
rafs = RafsMount(nydus_anchor, nydus_scratch_image, rafs_conf)
with utils.timer("Mount elapse"):
rafs.thread_num(7).mount()
assert rafs.is_mounted()
wg = WorkloadGen(nydus_anchor.mount_point, nydus_scratch_image.rootfs())
# TODO: Run several parallel read workers against the mount_point
wg.setup_workload_generator()
wg.torture_read(5, 5)
wg.finish_torture_read()
utils.clean_pagecache()
def test_prefetch_without_cache(nydus_anchor: NydusAnchor,
nydus_scratch_image: RafsImage,
rafs_conf: RafsConf):
"""Files prefetch test
1. relative hinted prefetch files
2. absolute hinted prefetch files
3. source rootfs root dir.
"""
rafs_conf.enable_fs_prefetch().set_rafs_backend(Backend.BACKEND_PROXY)
rafs_conf.dump_rafs_conf()
dist = Distributor(nydus_scratch_image.rootfs(), 4, 4)
dist.generate_tree()
dist.put_directories(20)
dist.put_multiple_files(40, Size(8, Unit.KB))
dist.put_hardlinks(6)
dist.put_multiple_chinese_files(random.randint(20, 28), Size(20, Unit.KB))
hint_files = ["/"]
hint_files.extend(dist.files)
hint_files.extend(dist.dirs)
hint_files.extend(dist.symlinks)
hint_files.extend(dist.hardlinks)
hint_files = [os.path.join("/", p) for p in hint_files]
hint_files = "\n".join(hint_files)
nydus_scratch_image.set_backend(Backend.BACKEND_PROXY).create_image(
readahead_policy="fs", readahead_files=hint_files.encode())
rafs = RafsMount(nydus_anchor, nydus_scratch_image, rafs_conf)
rafs.mount()
assert rafs.is_mounted()
workload_gen = WorkloadGen(nydus_anchor.mount_point,
nydus_scratch_image.rootfs())
# TODO: Run several parallel read workers against the mount_point
workload_gen.setup_workload_generator()
workload_gen.torture_read(8, 5)
workload_gen.finish_torture_read()
assert NydusAnchor.check_nydusd_health()
assert not workload_gen.io_error
assert rafs.is_mounted()
rafs.umount()
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_different_partitions(nydus_anchor: NydusAnchor, rafs_conf):
loop_file_1 = tempfile.NamedTemporaryFile(suffix="loop")
loop_file_2 = tempfile.NamedTemporaryFile(suffix="loop")
loop_mnt_1 = tempfile.TemporaryDirectory(dir=nydus_anchor.workspace)
loop_mnt_2 = tempfile.TemporaryDirectory(dir=nydus_anchor.workspace)
os.posix_fallocate(loop_file_1.fileno(), 0, Size(400, Unit.MB).B)
os.posix_fallocate(loop_file_2.fileno(), 0, Size(400, Unit.MB).B)
utils.execute(["mkfs.ext4", "-F", loop_file_1.name])
utils.execute(["mkfs.ext4", "-F", loop_file_2.name])
utils.execute(["mount", loop_file_1.name, loop_mnt_1.name])
utils.execute(["mount", loop_file_2.name, loop_mnt_2.name])
# TODO: Put more special files into
dist1 = Distributor(loop_mnt_1.name, 5, 7)
dist1.generate_tree()
dist1.put_multiple_files(100, Size(12, Unit.KB))
dist2 = Distributor(loop_mnt_2.name, 5, 7)
dist2.generate_tree()
dist2.put_symlinks(20)
dist2.put_multiple_files(50, Size(12, Unit.KB))
Whiteout.mirror_files(dist2.files[:20], loop_mnt_2.name, loop_mnt_1.name)
parent_image = (RafsImage(nydus_anchor, loop_mnt_1.name).set_backend(
Backend.OSS).create_image())
image = RafsImage(nydus_anchor, loop_mnt_2.name)
image.set_backend(Backend.OSS).create_image(parent_image=parent_image)
rafs_conf.set_rafs_backend(Backend.OSS)
rafs = RafsMount(nydus_anchor, image, rafs_conf)
rafs.mount()
nydus_anchor.mount_overlayfs([image.rootfs(), parent_image.rootfs()])
wg = WorkloadGen(nydus_anchor.mount_point, nydus_anchor.overlayfs)
wg.setup_workload_generator()
wg.torture_read(5, 5)
wg.finish_torture_read()
utils.execute(["umount", loop_mnt_1.name])
utils.execute(["umount", loop_mnt_2.name])
nydus_anchor.umount_overlayfs()
def test_blobcache(
nydus_anchor: NydusAnchor,
rafs_conf: RafsConf,
nydus_image: RafsImage,
nydus_scratch_parent_image: RafsImage,
thread_cnt,
io_duration,
):
dist_parent = Distributor(nydus_scratch_parent_image.rootfs(), 6, 4)
dist_parent.generate_tree()
dist_parent.put_multiple_files(20, Size(4, Unit.KB))
hint_files_parent = [os.path.join("/", p) for p in dist_parent.files[-20:]]
hint_files_parent = "\n".join(hint_files_parent[-1:])
nydus_scratch_parent_image.set_backend(Backend.OSS).create_image()
# shutil.rmtree(nydus_scratch_parent_image.rootfs())
nydus_image.set_backend(Backend.OSS).create_image(
readahead_policy="fs",
parent_image=nydus_scratch_parent_image,
readahead_files=hint_files_parent.encode(),
)
nydus_anchor.mount_overlayfs(
[nydus_image.rootfs(),
nydus_scratch_parent_image.rootfs()])
rafs_conf.enable_rafs_blobcache().set_rafs_backend(Backend.OSS)
rafs_conf.enable_fs_prefetch()
rafs_conf.dump_rafs_conf()
rafs = RafsMount(nydus_anchor, nydus_image, rafs_conf)
rafs.thread_num(4).mount()
nc = NydusAPIClient(rafs.get_apisock())
m = nc.get_blobcache_metrics()
# TODO: Open this check when prefetch is fixed.
time.sleep(1)
assert m["prefetch_data_amount"] != 0
wg = WorkloadGen(nydus_anchor.mount_point, nydus_anchor.overlayfs)
wg.setup_workload_generator()
wg.torture_read(thread_cnt, io_duration)
wg.finish_torture_read()
def test_deep_directory(nydus_anchor, rafs_conf: RafsConf,
nydus_scratch_image: RafsImage):
dist = Distributor(nydus_anchor.scratch_dir, 100, 1)
dist.generate_tree()
nydus_scratch_image.set_backend(Backend.BACKEND_PROXY).create_image()
rafs_conf.set_rafs_backend(Backend.BACKEND_PROXY)
rafs_conf.dump_rafs_conf()
rafs = RafsMount(nydus_anchor, nydus_scratch_image, rafs_conf)
rafs.mount()
wg = WorkloadGen(nydus_anchor.mount_point, nydus_scratch_image.rootfs())
wg.setup_workload_generator()
wg.torture_read(8, 5)
wg.finish_torture_read()
assert wg.verify_entire_fs()
def test_hardlink(nydus_anchor: NydusAnchor, nydus_scratch_image,
rafs_conf: RafsConf):
dist = Distributor(nydus_scratch_image.rootfs(), 8, 6)
dist.generate_tree()
hardlink_verifier = verifier.HardlinkVerifier(nydus_scratch_image.rootfs(),
dist)
hardlink_verifier.scratch()
nydus_scratch_image.set_backend(Backend.BACKEND_PROXY).create_image()
rafs_conf.set_rafs_backend(Backend.BACKEND_PROXY)
rafs = RafsMount(nydus_anchor, nydus_scratch_image, rafs_conf)
rafs.mount()
wg = WorkloadGen(nydus_anchor.mount_point, nydus_scratch_image.rootfs())
hardlink_verifier.verify(nydus_anchor.mount_point,
nydus_scratch_image.rootfs())
wg.setup_workload_generator()
wg.io_read(3)
nydus_anchor.check_nydusd_health()
assert wg.io_error == False
def test_signal_handling(nydus_anchor: NydusAnchor,
nydus_scratch_image: RafsImage, rafs_conf: RafsConf,
sig):
dist = Distributor(nydus_scratch_image.rootfs(), 2, 2)
dist.generate_tree()
dist.put_multiple_files(5, Size(2, Unit.KB))
nydus_scratch_image.set_backend(Backend.BACKEND_PROXY).create_image()
victim = os.path.join(nydus_anchor.mount_point, dist.files[-1])
rafs_conf.set_rafs_backend(Backend.BACKEND_PROXY)
rafs = RafsMount(nydus_anchor, nydus_scratch_image, rafs_conf)
rafs.mount()
fd = os.open(victim, os.O_RDONLY)
assert rafs.is_mounted()
os.kill(rafs.p.pid, sig)
time.sleep(3)
assert not os.path.ismount(nydus_anchor.mount_point)
rafs.p.wait()
try:
shutil.rmtree(generated_parent_rootfs)
except FileNotFoundError:
pass
os.mkdir(generated_rootfs)
os.mkdir(generated_parent_rootfs)
fs_dist = define_fs_structure(dist_define)
depth = fs_dist["depth"]
width = fs_dist["width"]
layers_desc = fs_dist["layers"]
dist = Distributor(generated_rootfs, depth, width)
dist.generate_tree()
for ld in layers_desc:
with utils.timer("Generating test layer"):
for d in ld.values():
for f in d:
try:
size = f["size"]
except KeyError:
size = None
put_files(dist, f["type"], f["count"], size)
parent_dist = Distributor(generated_parent_rootfs, depth, width)
parent_dist.generate_tree()
for ld in layers_desc:
def test_backend_swap(nydus_anchor, nydus_scratch_image: RafsImage,
rafs_conf: RafsConf):
dist = Distributor(nydus_scratch_image.rootfs(), 5, 4)
dist.generate_tree()
dist.put_multiple_files(100, Size(2, Unit.MB))
nydus_scratch_image.set_backend(Backend.OSS).create_image(
readahead_policy="fs", readahead_files="/".encode())
rafs_conf.set_rafs_backend(
Backend.OSS).enable_rafs_blobcache().enable_fs_prefetch(
threads_count=7, bandwidth_rate=Size(2, Unit.MB).B)
rafs_conf.dump_rafs_conf()
rafs = RafsMount(nydus_anchor, None, rafs_conf, with_defaults=False)
rafs.thread_num(4).set_mountpoint(
nydus_anchor.mount_point).apisock("api_sock").mount()
nc = NydusAPIClient(rafs.get_apisock())
nc.pseudo_fs_mount(nydus_scratch_image.bootstrap_path, "/",
rafs_conf.path(), None)
nc.umount_rafs("/")
assert len(os.listdir(nydus_anchor.mount_point)) == 0
mp = "/pseudo1"
nc.pseudo_fs_mount(nydus_scratch_image.bootstrap_path, mp,
rafs_conf.path(), None)
rafs_conf_2nd = RafsConf(nydus_anchor, nydus_scratch_image)
rafs_conf_2nd.set_rafs_backend(
Backend.LOCALFS,
image=nydus_scratch_image).enable_rafs_blobcache().enable_fs_prefetch(
threads_count=3, bandwidth_rate=Size(1, Unit.MB).B)
rafs_conf_2nd.dump_rafs_conf()
new_image = (RafsImage(
nydus_anchor, nydus_scratch_image.rootfs()).set_backend(
Backend.LOCALFS).create_image(readahead_policy="fs",
readahead_files="/".encode()))
# TODO: Once upon a time, more than one fd are open. Check why this happens.
wg = WorkloadGen(
os.path.join(nydus_anchor.mount_point, mp.strip("/")),
nydus_scratch_image.rootfs(),
)
wg.setup_workload_generator()
wg.torture_read(8, 8)
for i in range(1, 50):
logging.debug("swap for the %dth time", i)
nc.swap_backend(mp, new_image.bootstrap_name, rafs_conf_2nd.path())
# assert nc.get_blobcache_metrics(mp)["prefetch_workers"] == 3
time.sleep(0.2)
nc.swap_backend(mp, nydus_scratch_image.bootstrap_name,
rafs_conf.path())
utils.clean_pagecache()
wg.finish_torture_read()
assert wg.io_error == False
nc.umount_rafs(mp)
utils.clean_pagecache()
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()
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_prefetch_with_cache(
nydus_anchor,
nydus_scratch_image: RafsImage,
rafs_conf: RafsConf,
thread_cnt,
compressor,
is_cache_compressed,
converter,
items,
):
"""
title: Prefetch from various backend
description:
- Enable rafs backend blob cache, as it is disabled by default
pass_criteria:
- Rafs can be mounted.
- Rafs can be unmounted.
"""
dist = Distributor(nydus_scratch_image.rootfs(), 4, 4)
dist.generate_tree()
dist.put_directories(20)
dist.put_multiple_files(40, Size(3, Unit.MB))
dist.put_multiple_files(10, Size(5, Unit.MB))
dist.put_hardlinks(6)
dist.put_multiple_chinese_files(random.randint(20, 28), Size(20, Unit.KB))
nydus_scratch_image.set_backend(Backend.LOCALFS).create_image(
image_bin=converter,
compressor=compressor,
readahead_policy="fs",
readahead_files="/".encode(),
)
rafs_conf.enable_rafs_blobcache(
is_compressed=is_cache_compressed).enable_fs_prefetch()
rafs_conf.set_rafs_backend(Backend.LOCALFS, image=nydus_scratch_image)
if len(items) > 0:
for i in items:
item = RafsConf.__dict__[i]
item(rafs_conf)
rafs = RafsMount(nydus_anchor, nydus_scratch_image, rafs_conf)
rafs.thread_num(6).mount()
nc = NydusAPIClient(rafs.get_apisock())
workload_gen = WorkloadGen(nydus_anchor.mount_point,
nydus_scratch_image.rootfs())
m = nc.get_blobcache_metrics()
time.sleep(0.3)
assert m["prefetch_data_amount"] != 0
workload_gen.verify_entire_fs()
workload_gen.setup_workload_generator()
workload_gen.torture_read(thread_cnt, 6)
assert NydusAnchor.check_nydusd_health()
workload_gen.finish_torture_read()
assert not workload_gen.io_error
def test_pseudo_fs(nydus_anchor, nydus_image, rafs_conf: RafsConf):
nydus_image.set_backend(Backend.BACKEND_PROXY).create_image()
rafs_conf.set_rafs_backend(Backend.BACKEND_PROXY)
rafs = RafsMount(nydus_anchor, None, rafs_conf)
rafs.mount()
time.sleep(1)
nc = NydusAPIClient(rafs.get_apisock())
try:
shutil.rmtree("pseudo_fs_scratch")
except FileNotFoundError:
pass
scratch_rootfs = shutil.copytree(nydus_image.rootfs(),
"pseudo_fs_scratch",
symlinks=True)
dist = Distributor(scratch_rootfs, 5, 5)
dist.generate_tree()
dist.put_multiple_files(20, Size(8, Unit.KB))
###
suffix = "1"
image = RafsImage(
nydus_anchor,
scratch_rootfs,
"bs" + suffix,
"blob" + suffix,
)
conf = RafsConf(nydus_anchor)
conf.enable_fs_prefetch()
conf.enable_validation()
conf.set_rafs_backend(Backend.BACKEND_PROXY)
conf.dump_rafs_conf()
image.set_backend(Backend.BACKEND_PROXY).create_image()
nc.pseudo_fs_mount(image.bootstrap_path, f"/pseudo{suffix}", conf.path(),
None)
###
suffix = "2"
image = RafsImage(
nydus_anchor,
scratch_rootfs,
"bs" + suffix,
"blob" + suffix,
)
conf = RafsConf(nydus_anchor)
conf.enable_rafs_blobcache()
conf.enable_validation()
conf.enable_records_readahead()
conf.set_rafs_backend(Backend.BACKEND_PROXY)
conf.dump_rafs_conf()
dist.put_multiple_files(20, Size(8, Unit.KB))
image.set_backend(Backend.BACKEND_PROXY).create_image()
nc.pseudo_fs_mount(image.bootstrap_path, f"/pseudo{suffix}", conf.path(),
None)
###
suffix = "3"
image = RafsImage(
nydus_anchor,
scratch_rootfs,
"bs" + suffix,
"blob" + suffix,
)
conf = RafsConf(nydus_anchor)
conf.enable_rafs_blobcache()
conf.enable_records_readahead()
conf.set_rafs_backend(Backend.BACKEND_PROXY)
conf.dump_rafs_conf()
dist.put_multiple_files(20, Size(8, Unit.KB))
image.set_backend(Backend.BACKEND_PROXY).create_image()
nc.pseudo_fs_mount(image.bootstrap_path, f"/pseudo{suffix}", conf.path(),
None)
wg1 = WorkloadGen(os.path.join(nydus_anchor.mount_point, "pseudo1"),
scratch_rootfs)
wg2 = WorkloadGen(os.path.join(nydus_anchor.mount_point, "pseudo2"),
scratch_rootfs)
wg3 = WorkloadGen(os.path.join(nydus_anchor.mount_point, "pseudo3"),
scratch_rootfs)
time.sleep(2)
wg1.setup_workload_generator()
wg2.setup_workload_generator()
wg3.setup_workload_generator()
wg1.torture_read(4, 8)
wg2.torture_read(4, 8)
wg3.torture_read(4, 8)
wg1.finish_torture_read()
wg2.finish_torture_read()
wg3.finish_torture_read()
# TODO: Temporarily disable the verification as hard to select `verify dir`
# assert wg1.verify_entire_fs()
# assert wg2.verify_entire_fs()
# assert wg3.verify_entire_fs()
nc.umount_rafs("/pseudo1")
nc.umount_rafs("/pseudo2")
nc.umount_rafs("/pseudo3")
