def step_impl(context):
sh.mkdir("tmp").wait()
for row in context.table:
sh.dd(
"if=/dev/zero", "of=tmp/" + row["name"], "bs=1048576",
"count=" + row["count"]
)
def disk_wipe():
""" Wipe all filesystem and parition data from the disk. """
print('Destroying filesystem and partition data')
sh.wipefs('-a', config.disk_dev)
sh.sgdisk('--zap-all', config.disk_dev)
sh.sgdisk('-og', config.disk_dev)
print('Writing 10GB of zeros to the drive, this may take seconds or minutes depending on disk speed')
sh.dd('bs=10M', 'count=1024', 'if=/dev/zero', f'of={config.disk_dev}', 'conv=fdatasync', _out=sys.stdout)
def step_impl(context):
sh.mkdir("tmp").wait()
for row in context.table:
dirs = row["name"].split("/")
if len(dirs) > 1:
sh.mkdir("tmp/" + dirs[0]).wait()
sh.dd("if=/dev/zero", "of=tmp/{filename}".format(filename=row["name"]),
"bs=1048576", "count=1").wait()
def step_impl(context):
sh.mkdir("tmp").wait()
for row in context.table:
dirs = row["name"].split("/")
if len(dirs) > 1:
sh.mkdir("tmp/" + dirs[0]).wait()
sh.dd(
"if=/dev/zero",
"of=tmp/{filename}".format(filename=row["name"]),
"bs=1048576",
"count=1"
).wait()
def log_copy_operation(copy_source, copy_destination, file_size, nr_of_files, log_dir, sample_files_dir, unit, mountpoint, reading=False, timelimit_in_min=None):
''':returns: amount of files successfully written to the file system'''
#check="$6" #check copy destination with the file of the name "file_sizeMB" in $SAMPLE_FILES_DIR
success = 0
errors = 0
corruption = 0
if timelimit_in_min is None:
timelimit_in_min = float("inf")
timelimit_in_s = timelimit_in_min * 60
timeout = False
if reading:
LOG_DIR = log_dir + "/read"
else:
LOG_DIR = log_dir + "/write"
os.makedirs(LOG_DIR)
copy_stats_process = Process(target=periodic_copy_stats, args=(LOG_DIR, mountpoint))
copy_stats_process.start()
ifstats = Ifstats()
time_before_operation = datetime.datetime.now() - datetime.timedelta(0)
subdir = 0
for nr in range(1, nr_of_files+1): # from 1 to file quantity
filename = file_size+unit+'_'+str(nr)
if nr % 500 == 0:
subdir = subdir + 1
if reading:
src = copy_source+'/'+str(subdir)+'/'+filename
dst = copy_destination+'/'+filename
else:
src = copy_source+'/'+filename
dst = copy_destination+'/'+str(subdir)+'/'+filename
tries = 2
while True:
try:
dd('if='+src, 'of='+dst, 'bs=131072')
success += 1
animate_line("copy "+src+" -> "+dst)
except ErrorReturnCode, e:
tries -= 1
errors += 1
if tries == 0:
break
print "\nError occured during copying - retrying:%s\n" % repr(e)
#traceback.print_exc()
continue
break # stop loop if command succeeded
timeout = timelimit_in_s < (datetime.datetime.now() - time_before_operation).seconds
if timeout:
break
def trial(num_bins=1, size_bin=500, after_rm=None, max_delta=0.05):
from sh import imgbase, rm, ls
def img_free():
return float(imgbase("layout", "--free-space"))
imgbase = imgbase.bake("--debug")
a = img_free()
[dd(B, size_bin) for B in iter(range(0, num_bins))]
print("Files which were created")
print(ls("-shal", *glob.glob("/var/tmp/*.bin")))
b = img_free()
print("Files are getting removed")
rm("-f", *glob.glob("/var/tmp/*.bin"))
after_rm()
c = img_free()
ratio = a / c
print(a, b, c, ratio)
delta = 1 - ratio
assert delta < max_delta, \
"Delta %s is larger than %s" % (delta, max_delta)
def main():
parser = MyParser()
parser.add_argument('directory')
args = parser.parse_args()
directory = args.directory
if not os.path.exists(directory):
os.makedirs(directory)
filesize_arr = [1,2,3,4,5,6]
filequantity_arr = [10000,5000,3333,2500,2000,1667]
idx = 0
for size in filesize_arr:
for nr in range(1,filequantity_arr[idx]+1): # from 1 to file quantity
filename = directory+'/'+str(size)+'MB_'+str(nr)
print "writing "+directory+'/'+str(size)+'MB_'+str(nr)
dd('if=/dev/zero', 'of='+filename, 'bs=1MB', 'count='+str(size))
idx += 1
def _create_bootstrap_img(self):
self._bootstrap_dir = tempfile.mkdtemp()
sh.chmod("o+rwx", self._bootstrap_dir)
self._bootstrap_files = os.path.join(self._bootstrap_dir, "files")
os.makedirs(self._bootstrap_files)
with open(os.path.join(os.path.dirname(__file__), "bootstrap.py"),
"r") as f:
bootstrap_contents = f.read()
with open(os.path.join(self._bootstrap_files, "bootstrap.py"),
"wb") as f:
f.write(bootstrap_contents)
with open(os.path.join(self._bootstrap_files, "config.json"),
"wb") as f:
f.write(self._make_config())
self._bootstrap_img = os.path.join(self._bootstrap_dir,
"bootstrap.img")
sh.dd("if=/dev/null", "bs=1K", "of={}".format(self._bootstrap_img),
"seek=2040")
sh.Command("mkfs.ntfs")("-F", self._bootstrap_img)
#sh.Command("mkfs.vfat")(self._bootstrap_img)
mounted_dir = os.path.join(self._bootstrap_dir, "mounted")
os.makedirs(mounted_dir)
output = sh.mount("-t", "ntfs", "-o", "loop", self._bootstrap_img,
mounted_dir)
#output = sh.mount("-t", "vfat", "-o", "loop", self._bootstrap_img, mounted_dir)
#self._log.debug("mount output: " + str(output))
shutil.copy(os.path.join(self._bootstrap_files, "bootstrap.py"),
mounted_dir)
shutil.copy(os.path.join(self._bootstrap_files, "config.json"),
mounted_dir)
try:
sh.umount(mounted_dir)
except:
pass
return self._bootstrap_img
def _hotplug_empty_disk(self):
self._tmpdir = tempfile.mkdtemp()
sh.chmod("o+rwx", self._tmpdir)
self._tmpdisk = os.path.join(self._tmpdir, "tmpdisk.img")
sh.dd("if=/dev/null", "bs=1K", "of={}".format(self._tmpdisk), "seek=1030")
sh.Command("mkfs.ntfs")("-F", self._tmpdisk)
disk_file = os.path.join(self._tmpdir, "disk.xml")
with open(disk_file, "wb") as f:
f.write("""
<disk type="file" device="disk">
<driver name="qemu" type="raw" cache="none" io="native"/>
<source file="{}"/>
<target dev="sda" bus="usb"/>
</disk>
""".format(self._tmpdisk))
sh.virsh("attach-device", self._domain, disk_file)
def get_disk_throughput(device):
"""Tests a disk for read throughput. Returns formatted result.
:param device: The device to test (Expects full path)
"""
throughput = 0
unit = ""
for line in sh.dd("if={}".format(device), "of=/dev/zero", "bs=1M", "count=1000", _err_to_out=True):
s = re.search(' copied,.*, (\S+) (\S+)$', line)
if s:
throughput = s.group(1)
unit = s.group(2)
break
return "{} {}".format(throughput, unit)
def _create_bootstrap_img(self):
self._bootstrap_dir = tempfile.mkdtemp()
sh.chmod("o+rwx", self._bootstrap_dir)
self._bootstrap_files = os.path.join(self._bootstrap_dir, "files")
os.makedirs(self._bootstrap_files)
with open(os.path.join(os.path.dirname(__file__), "bootstrap.py"), "r") as f:
bootstrap_contents = f.read()
with open(os.path.join(self._bootstrap_files, "bootstrap.py"), "wb") as f:
f.write(bootstrap_contents)
with open(os.path.join(self._bootstrap_files, "config.json"), "wb") as f:
f.write(self._make_config())
self._bootstrap_img = os.path.join(self._bootstrap_dir, "bootstrap.img")
sh.dd("if=/dev/null", "bs=1K", "of={}".format(self._bootstrap_img), "seek=2040")
sh.Command("mkfs.ntfs")("-F", self._bootstrap_img)
#sh.Command("mkfs.vfat")(self._bootstrap_img)
mounted_dir = os.path.join(self._bootstrap_dir, "mounted")
os.makedirs(mounted_dir)
output = sh.mount("-t", "ntfs", "-o", "loop", self._bootstrap_img, mounted_dir)
#output = sh.mount("-t", "vfat", "-o", "loop", self._bootstrap_img, mounted_dir)
#self._log.debug("mount output: " + str(output))
shutil.copy(os.path.join(self._bootstrap_files, "bootstrap.py"), mounted_dir)
shutil.copy(os.path.join(self._bootstrap_files, "config.json"), mounted_dir)
try:
sh.umount(mounted_dir)
except:
pass
return self._bootstrap_img
def log_copy_operation(copy_source, copy_destination, file_size, nr_of_files, log_file, sample_files_dir, unit, check=False):
#check="$6" #check copy destination with the file of the name "file_sizeMB" in $SAMPLE_FILES_DIR
now = datetime.datetime.now()
time_of_multiple_operations = now - now
success = 0
time_before_operation = datetime.datetime.now() - datetime.timedelta(0)
for nr in range(1, nr_of_files+1): # from 1 to file quantity
operation_succeeded=0
while True:
try:
start = datetime.datetime.now()
dd('if='+copy_source+str(nr), 'of='+copy_destination+str(nr), 'bs=131072')
end = datetime.datetime.now()
except ErrorReturnCode:
import traceback
sys.stderr.write("Error occured during copying - retrying:")
traceback.print_exc()
continue
break # stop loop if command succeeded
time_of_operation = end - start
time_of_multiple_operations += time_of_operation
print "time gone until now: "+str(time_of_multiple_operations)
success += 1
if check:
if is_equal(copy_destination+str(nr), sample_files_dir+'/'+str(file_size)+unit+'_'+str(nr)):
success -= 1
time_after_operations = time_before_operation + time_of_multiple_operations
print "time_before_operation %s - time_after_operation %s" % (time_before_operation, time_after_operations)
average_transfer_rate = (1.0*int(file_size) * nr_of_files)*(1/time_of_multiple_operations.total_seconds())
#"single_file_size total_size time_for_operation_in_seconds average_transfer_rate nr_of_files success"
if not os.path.exists(log_file):
with open(log_file, 'w') as f:
f.write("single file size\ttotal size\ttime for operation [s]\taverage transfer rate [%s/s]\tnumber of files\tsuccess\n" % unit)
with open(log_file, 'a') as f:
total_size = int(file_size)*nr_of_files
f.write("%s\t%s\t%s\t%s\t%s\t%s\n" % (file_size, total_size, time_of_multiple_operations.total_seconds(), average_transfer_rate, nr_of_files, success))
def trial(num_bins=1, size_bin=500, after_rm=None, max_delta=0.05):
from sh import imgbase, rm, ls
imgbase = imgbase.bake("--debug")
img_free = lambda: float(imgbase("layout", "--free-space"))
a = img_free()
[dd(B, size_bin) for B in iter(range(0, num_bins))]
print("Files which were created")
print(ls("-shal", *glob.glob("/var/tmp/*.bin")))
b = img_free()
print("Files are getting removed")
rm("-f", *glob.glob("/var/tmp/*.bin"))
after_rm()
c = img_free()
ratio = a / c
print(a, b, c, ratio)
delta = 1 - ratio
assert delta < max_delta, \
"Delta %s is larger than %s" % (delta, max_delta)
def LicheePiImage(workdir, boot_files, kernel_files, rootfs_files):
mkdir('-p', workdir)
IMAGE_NAME = 'sdcard.img'
IMAGE_PATH = str(Path(workdir).joinpath(IMAGE_NAME))
dd('if=/dev/zero', 'of={}'.format(IMAGE_PATH), 'bs=1M', 'count=300')
loop_dev = str(losetup('-f')).split()[0]
losetup(loop_dev, IMAGE_PATH)
sfdisk(cat(_in='1M,16M,c\n,,L'), loop_dev)
partx('-u', loop_dev)
mkfsvfat('{}p1'.format(loop_dev))
mkfsext4('{}p2'.format(loop_dev))
dd('if=/dev/zero', 'of={}'.format(loop_dev), 'bs=1K', 'seek=1',
'count=1023')
dd('if={}'.format(boot_files['bootstrap']), 'of={}'.format(loop_dev),
'bs=1K', 'seek=8')
sync()
mkdir('-p', '/tmp/p1')
mkdir('-p', '/tmp/p2')
mount('{}p1'.format(loop_dev), '/tmp/p1')
mount('{}p2'.format(loop_dev), '/tmp/p2')
cp(boot_files['bin'], '/tmp/p1/')
cp(kernel_files['bin'], '/tmp/p1/')
cp(kernel_files['dtb'], '/tmp/p1/')
mkimage('-C', 'none', '-A', 'arm', '-T', 'script', '-d',
'./resources/boot.cmd', '/tmp/p1/boot.scr')
rsync('-r', '--links', rootfs_files['rootdir'] + '/', '/tmp/p2/')
mkdir('-p', '/tmp/p2/etc/init.d')
mkdir('-p', '/tmp/p2/proc')
mkdir('-p', '/tmp/p2/dev')
mkdir('-p', '/tmp/p2/sys')
mkdir('-p', '/tmp/p2/var')
touch('/tmp/p2/etc/init.d/rcS')
chown('-R', 'root:root', '/tmp/p2/')
def dd(N, count=100):
from sh import dd
dd("if=/dev/zero", "of=/var/tmp/%s.bin" % N, "bs=1M", "count=%d" % count)
def reserve_space(folder, reserve_size):
path = dummy_file(folder)
sh.dd('if=/dev/zero', 'of=%s' % path, 'bs=%lu' % (reserve_size / 1024),
'count=1024')
def generate(filename, bs, count=1):
return sh.dd('if=/dev/urandom', 'of={}'.format(filename),
'bs={}'.format(bs), 'count={}'.format(count))
def dd(N, count=100):
from sh import dd
dd("if=/dev/zero", "of=/var/tmp/%s.bin" % N, "bs=1M",
"count=%d" % count)
def ddd(**kwargs):
# dd helper
return dd(
*("{}={}".format(k.lstrip("_"), v) for k, v in kwargs.items()),
**SH_OPTS,
)
def cli(
ctx,
destination_folder: Path,
zpool_size_mb: int,
recordsize: str,
large_dnode: bool,
no_acl: bool,
verbose: Union[bool, int, float],
verbose_inf: bool,
loopback: bool,
record_count: int,
ipython: bool,
):
tty, verbose = tv(
ctx=ctx,
verbose=verbose,
verbose_inf=verbose_inf,
)
if os.getuid() != 0:
ic("must be root")
sys.exit(1)
if zpool_size_mb < 64:
raise ValueError("minimum zpool size is 64MB")
timestamp = str(time.time())
if verbose:
ic(timestamp)
if loopback:
free_loop = sh.losetup("--find").splitlines()
loop = Path(free_loop[0])
if not path_is_block_special(loop):
raise ValueError(f"loop device path {loop} is not block special")
loops_in_use = sh.losetup("-l").splitlines()
# ic(loops_in_use)
for line in loops_in_use:
if loop in loops_in_use:
raise ValueError(f"loop device {loop} already in use")
destination = Path(destination_folder) / Path(f"zfstester_{timestamp}")
os.makedirs(destination)
destination_pool_file = destination / Path(f"test_pool_{timestamp}")
destination_pool_file = destination_pool_file.resolve()
if verbose:
ic(destination_pool_file)
sh.dd(
"if=/dev/zero",
f"of={destination_pool_file.as_posix()}",
f"bs={zpool_size_mb}M",
"count=1",
)
# dd if=/dev/urandom of=temp_zfs_key bs=32 count=1 || exit 1
# key_path=`readlink -f temp_zfs_key`
if loopback:
sh.losetup(loop, destination_pool_file, loop)
atexit.register(cleanup_loop_device, loop)
if verbose:
ic(sh.losetup("-l"))
zpool_name = destination_pool_file.name
if verbose:
ic(zpool_name)
zpool_create_command = sh.Command("zpool")
zpool_create_command = zpool_create_command.bake(
"create",
"-O",
"atime=off",
"-O",
"compression=lz4",
"-O",
"mountpoint=none",
"-O",
f"recordsize={recordsize}",
zpool_name,
)
if loopback:
zpool_create_command = zpool_create_command.bake(loop)
else:
zpool_create_command = zpool_create_command.bake(destination_pool_file)
zpool_create_command_result = zpool_create_command().splitlines()
ic(zpool_create_command_result)
# run_command(zpool_create_command, verbose=True)
# atexit.register(destroy_zfs_pool, zpool_name)
zfs_mountpoint = Path(f"{destination_pool_file.as_posix()}_mountpoint")
zfs_filesystem = f"{zpool_name}/spacetest"
zfs_create_command = sh.Command("zfs")
zfs_create_command = zfs_create_command.bake(
"create",
"-o",
f"mountpoint={zfs_mountpoint.as_posix()}",
"-o",
f"recordsize={recordsize}",
)
if large_dnode:
zfs_create_command = zfs_create_command.bake("-o", "dnodesize=auto")
if no_acl:
zfs_create_command = zfs_create_command.bake("-o", "acl=off")
zfs_create_command = zfs_create_command.bake(zfs_filesystem)
zfs_create_command_result = zfs_create_command().splitlines()
ic(zfs_create_command_result)
atexit.register(umount_zfs_filesystem, zfs_mountpoint)
# atexit.register(destroy_zfs_filesystem, zfs_filesystem)
# disabled just for pure space tests
# zfs create -o encryption=on -o keyformat=raw -o keylocation=file://"${key_path}" -o mountpoint=/"${destination_pool_file}"/spacetest_enc "${destination_pool_file}"/spacetest_enc || exit 1
check_df(destination_pool_file)
try:
make_things(root=zfs_mountpoint,
count=None,
thing_function=os.makedirs)
except Exception as e:
ic(e)
ic(sh.ls("-alh", zfs_mountpoint))
check_df(destination_pool_file)
sh.sync()
pathstat_results = pathstat(path=zfs_mountpoint, verbose=verbose)
display_results(pathstat_results, verbose=verbose)
# 128K recordsize: 81266
# 512 recordsize: 80894
zfs_get_all_command_results_interesting_lines = []
zfs_get_all_command = sh.Command("zfs")
zfs_get_all_command = zfs_get_all_command.bake("get", "all")
zfs_get_all_command_results = zfs_get_all_command().splitlines()
interesting_fields = [
"used",
"available",
"referenced",
"compressratio",
"recordsize",
"checksum",
"compression",
"xattr",
"copies",
"version",
"usedbysnapshots",
"usedbydataset",
"usedbychildren",
"usedbyrefreservation",
"dedup",
"dnodesize",
"refcompressratio",
"written",
"logicalused",
"logicalreferenced",
"acltype",
"redundant_metadata",
"encryption",
"snapshot_count",
"special_small_blocks",
]
for line in zfs_get_all_command_results:
if destination_pool_file.name in line:
if line.split()[1] in interesting_fields:
zfs_get_all_command_results_interesting_lines.append(line)
print(line)
print("\nInteresting lines from above:")
for line in zfs_get_all_command_results_interesting_lines:
print(line)
df_inodes = str(sh.df("-i"))
# ic(df_inodes)
print()
for index, line in enumerate(df_inodes.splitlines()):
if index == 0:
print(line) # df -i header
if destination_pool_file.name in line:
df_line = line
print(df_line)
Inodes, IUsed, IFree, IUse = df_line.split()[1:5]
destination_pool_file_rzip = destination_pool_file.as_posix() + ".rz"
sh.rzip("-k", "-9", "-o", destination_pool_file_rzip,
destination_pool_file.as_posix())
compressed_file_size = os.stat(destination_pool_file_rzip).st_size
destination_pool_file_sparse_copy = Path(destination_pool_file.as_posix() +
".sparse")
sh.cp(
"-v",
"-i",
"--sparse=always",
destination_pool_file,
destination_pool_file_sparse_copy,
)
destination_pool_file_sparse_copy_file_size = (
os.stat(destination_pool_file_sparse_copy).st_blocks * 512)
# ic(compressed_file_size)
print("\nSummary:")
# ic(pathstat_results)
print("pool file:")
os.system(" ".join(["/bin/ls", "-al", destination_pool_file.as_posix()]))
bytes_in_names = pathstat_results["bytes_in_names"]
objects_created = pathstat_results[4]
print()
print(
f"The {zpool_size_mb}MB pool ran out of free inodes (there are {IFree} out of {Inodes} left) after {bytes_in_names} bytes were written by creating {objects_created} empty directories (with random uncompressable names, under the root).\nCompressed, the pool file takes {compressed_file_size} bytes."
)
compression_ratio = (compressed_file_size /
(zpool_size_mb * 1024 * 1024)) * 100
print("compresson ratio:", str(round(compression_ratio, 2)) + "x")
print(
f"A sparse copy of the pool file is {destination_pool_file_sparse_copy_file_size}B (~{int(destination_pool_file_sparse_copy_file_size/1024/1024)}MB)"
)
if ipython:
import IPython
IPython.embed()
