def check_flatten_with_order(self, new_order):
global ioctx
global features
clone_name2 = get_temp_image_name()
self.rbd.clone(ioctx, image_name, 'snap1', ioctx, clone_name2,
features, new_order)
#with Image(ioctx, 'clone2') as clone:
clone2 = Image(ioctx, clone_name2)
clone2.flatten()
eq(clone2.overlap(), 0)
clone2.close()
self.rbd.remove(ioctx, clone_name2)
# flatten after resizing to non-block size
self.rbd.clone(ioctx, image_name, 'snap1', ioctx, clone_name2,
features, new_order)
with Image(ioctx, clone_name2) as clone:
clone.resize(IMG_SIZE / 2 - 1)
clone.flatten()
eq(0, clone.overlap())
self.rbd.remove(ioctx, clone_name2)
# flatten after resizing to non-block size
self.rbd.clone(ioctx, image_name, 'snap1', ioctx, clone_name2,
features, new_order)
with Image(ioctx, clone_name2) as clone:
clone.resize(IMG_SIZE / 2 + 1)
clone.flatten()
eq(clone.overlap(), 0)
self.rbd.remove(ioctx, clone_name2)
def check_flatten_with_order(self, new_order):
global ioctx
global features
self.rbd.clone(ioctx, IMG_NAME, "snap1", ioctx, "clone2", features, new_order)
# with Image(ioctx, 'clone2') as clone:
clone2 = Image(ioctx, "clone2")
clone2.flatten()
eq(clone2.overlap(), 0)
clone2.close()
self.rbd.remove(ioctx, "clone2")
# flatten after resizing to non-block size
self.rbd.clone(ioctx, IMG_NAME, "snap1", ioctx, "clone2", features, new_order)
with Image(ioctx, "clone2") as clone:
clone.resize(IMG_SIZE / 2 - 1)
clone.flatten()
eq(0, clone.overlap())
self.rbd.remove(ioctx, "clone2")
# flatten after resizing to non-block size
self.rbd.clone(ioctx, IMG_NAME, "snap1", ioctx, "clone2", features, new_order)
with Image(ioctx, "clone2") as clone:
clone.resize(IMG_SIZE / 2 + 1)
clone.flatten()
eq(clone.overlap(), 0)
self.rbd.remove(ioctx, "clone2")
def check_flatten_with_order(self, new_order):
global ioctx
global features
clone_name2 = get_temp_image_name()
self.rbd.clone(ioctx, image_name, 'snap1', ioctx, clone_name2,
features, new_order)
#with Image(ioctx, 'clone2') as clone:
clone2 = Image(ioctx, clone_name2)
clone2.flatten()
eq(clone2.overlap(), 0)
clone2.close()
self.rbd.remove(ioctx, clone_name2)
# flatten after resizing to non-block size
self.rbd.clone(ioctx, image_name, 'snap1', ioctx, clone_name2,
features, new_order)
with Image(ioctx, clone_name2) as clone:
clone.resize(IMG_SIZE // 2 - 1)
clone.flatten()
eq(0, clone.overlap())
self.rbd.remove(ioctx, clone_name2)
# flatten after resizing to non-block size
self.rbd.clone(ioctx, image_name, 'snap1', ioctx, clone_name2,
features, new_order)
with Image(ioctx, clone_name2) as clone:
clone.resize(IMG_SIZE // 2 + 1)
clone.flatten()
eq(clone.overlap(), 0)
self.rbd.remove(ioctx, clone_name2)
class TestClone(object):
@require_features([RBD_FEATURE_LAYERING])
def setUp(self):
global ioctx
global features
self.rbd = RBD()
create_image()
self.image = Image(ioctx, IMG_NAME)
data = rand_data(256)
self.image.write(data, IMG_SIZE / 2)
self.image.create_snap("snap1")
global features
self.image.protect_snap("snap1")
self.rbd.clone(ioctx, IMG_NAME, "snap1", ioctx, "clone", features)
self.clone = Image(ioctx, "clone")
def tearDown(self):
global ioctx
self.clone.close()
self.rbd.remove(ioctx, "clone")
self.image.unprotect_snap("snap1")
self.image.remove_snap("snap1")
self.image.close()
remove_image()
def test_unprotected(self):
self.image.create_snap("snap2")
global features
assert_raises(InvalidArgument, self.rbd.clone, ioctx, IMG_NAME, "snap2", ioctx, "clone2", features)
self.image.remove_snap("snap2")
def test_unprotect_with_children(self):
global features
# can't remove a snapshot that has dependent clones
assert_raises(ImageBusy, self.image.remove_snap, "snap1")
# validate parent info of clone created by TestClone.setUp
(pool, image, snap) = self.clone.parent_info()
eq(pool, "rbd")
eq(image, IMG_NAME)
eq(snap, "snap1")
# create a new pool...
rados.create_pool("rbd2")
other_ioctx = rados.open_ioctx("rbd2")
# ...with a clone of the same parent
self.rbd.clone(ioctx, IMG_NAME, "snap1", other_ioctx, "other_clone", features)
self.other_clone = Image(other_ioctx, "other_clone")
# validate its parent info
(pool, image, snap) = self.other_clone.parent_info()
eq(pool, "rbd")
eq(image, IMG_NAME)
eq(snap, "snap1")
# can't unprotect snap with children
assert_raises(ImageBusy, self.image.unprotect_snap, "snap1")
# 2 children, check that cannot remove the parent snap
assert_raises(ImageBusy, self.image.remove_snap, "snap1")
# close and remove other pool's clone
self.other_clone.close()
self.rbd.remove(other_ioctx, "other_clone")
# check that we cannot yet remove the parent snap
assert_raises(ImageBusy, self.image.remove_snap, "snap1")
other_ioctx.close()
rados.delete_pool("rbd2")
# unprotect, remove parent snap happen in cleanup, and should succeed
def test_stat(self):
image_info = self.image.stat()
clone_info = self.clone.stat()
eq(clone_info["size"], image_info["size"])
eq(clone_info["size"], self.clone.overlap())
def test_resize_stat(self):
self.clone.resize(IMG_SIZE / 2)
image_info = self.image.stat()
clone_info = self.clone.stat()
eq(clone_info["size"], IMG_SIZE / 2)
eq(image_info["size"], IMG_SIZE)
eq(self.clone.overlap(), IMG_SIZE / 2)
self.clone.resize(IMG_SIZE * 2)
image_info = self.image.stat()
clone_info = self.clone.stat()
eq(clone_info["size"], IMG_SIZE * 2)
eq(image_info["size"], IMG_SIZE)
eq(self.clone.overlap(), IMG_SIZE / 2)
def test_resize_io(self):
parent_data = self.image.read(IMG_SIZE / 2, 256)
self.clone.resize(IMG_SIZE / 2 + 128)
child_data = self.clone.read(IMG_SIZE / 2, 128)
eq(child_data, parent_data[:128])
self.clone.resize(IMG_SIZE)
child_data = self.clone.read(IMG_SIZE / 2, 256)
eq(child_data, parent_data[:128] + ("\0" * 128))
self.clone.resize(IMG_SIZE / 2 + 1)
child_data = self.clone.read(IMG_SIZE / 2, 1)
eq(child_data, parent_data[0])
self.clone.resize(0)
self.clone.resize(IMG_SIZE)
child_data = self.clone.read(IMG_SIZE / 2, 256)
eq(child_data, "\0" * 256)
def test_read(self):
parent_data = self.image.read(IMG_SIZE / 2, 256)
child_data = self.clone.read(IMG_SIZE / 2, 256)
eq(child_data, parent_data)
def test_write(self):
parent_data = self.image.read(IMG_SIZE / 2, 256)
new_data = rand_data(256)
self.clone.write(new_data, IMG_SIZE / 2 + 256)
child_data = self.clone.read(IMG_SIZE / 2 + 256, 256)
eq(child_data, new_data)
child_data = self.clone.read(IMG_SIZE / 2, 256)
eq(child_data, parent_data)
parent_data = self.image.read(IMG_SIZE / 2 + 256, 256)
eq(parent_data, "\0" * 256)
def test_list_children(self):
global ioctx
global features
self.image.set_snap("snap1")
eq(self.image.list_children(), [("rbd", "clone")])
self.clone.close()
self.rbd.remove(ioctx, "clone")
eq(self.image.list_children(), [])
expected_children = []
for i in xrange(10):
self.rbd.clone(ioctx, IMG_NAME, "snap1", ioctx, "clone%d" % i, features)
expected_children.append(("rbd", "clone%d" % i))
eq(self.image.list_children(), expected_children)
for i in xrange(10):
self.rbd.remove(ioctx, "clone%d" % i)
expected_children.pop(0)
eq(self.image.list_children(), expected_children)
eq(self.image.list_children(), [])
self.rbd.clone(ioctx, IMG_NAME, "snap1", ioctx, "clone", features)
eq(self.image.list_children(), [("rbd", "clone")])
self.clone = Image(ioctx, "clone")
def test_flatten_errors(self):
# test that we can't flatten a non-clone
assert_raises(InvalidArgument, self.image.flatten)
# test that we can't flatten a snapshot
self.clone.create_snap("snap2")
self.clone.set_snap("snap2")
assert_raises(ReadOnlyImage, self.clone.flatten)
self.clone.remove_snap("snap2")
def check_flatten_with_order(self, new_order):
global ioctx
global features
self.rbd.clone(ioctx, IMG_NAME, "snap1", ioctx, "clone2", features, new_order)
# with Image(ioctx, 'clone2') as clone:
clone2 = Image(ioctx, "clone2")
clone2.flatten()
eq(clone2.overlap(), 0)
clone2.close()
self.rbd.remove(ioctx, "clone2")
# flatten after resizing to non-block size
self.rbd.clone(ioctx, IMG_NAME, "snap1", ioctx, "clone2", features, new_order)
with Image(ioctx, "clone2") as clone:
clone.resize(IMG_SIZE / 2 - 1)
clone.flatten()
eq(0, clone.overlap())
self.rbd.remove(ioctx, "clone2")
# flatten after resizing to non-block size
self.rbd.clone(ioctx, IMG_NAME, "snap1", ioctx, "clone2", features, new_order)
with Image(ioctx, "clone2") as clone:
clone.resize(IMG_SIZE / 2 + 1)
clone.flatten()
eq(clone.overlap(), 0)
self.rbd.remove(ioctx, "clone2")
def test_flatten_basic(self):
self.check_flatten_with_order(IMG_ORDER)
def test_flatten_smaller_order(self):
self.check_flatten_with_order(IMG_ORDER - 2)
def test_flatten_larger_order(self):
self.check_flatten_with_order(IMG_ORDER + 2)
def test_flatten_drops_cache(self):
global ioctx
global features
self.rbd.clone(ioctx, IMG_NAME, "snap1", ioctx, "clone2", features, IMG_ORDER)
with Image(ioctx, "clone2") as clone:
with Image(ioctx, "clone2") as clone2:
# cache object non-existence
data = clone.read(IMG_SIZE / 2, 256)
clone2_data = clone2.read(IMG_SIZE / 2, 256)
eq(data, clone2_data)
clone.flatten()
assert_raises(ImageNotFound, clone.parent_info)
assert_raises(ImageNotFound, clone2.parent_info)
after_flatten = clone.read(IMG_SIZE / 2, 256)
eq(data, after_flatten)
after_flatten = clone2.read(IMG_SIZE / 2, 256)
eq(data, after_flatten)
self.rbd.remove(ioctx, "clone2")
class TestClone(object):
@require_features([RBD_FEATURE_LAYERING])
def setUp(self):
global ioctx
global features
self.rbd = RBD()
create_image()
self.image = Image(ioctx, image_name)
data = rand_data(256)
self.image.write(data, IMG_SIZE // 2)
self.image.create_snap('snap1')
global features
self.image.protect_snap('snap1')
self.clone_name = get_temp_image_name()
self.rbd.clone(ioctx, image_name, 'snap1', ioctx, self.clone_name,
features)
self.clone = Image(ioctx, self.clone_name)
def tearDown(self):
global ioctx
self.clone.close()
self.rbd.remove(ioctx, self.clone_name)
self.image.unprotect_snap('snap1')
self.image.remove_snap('snap1')
self.image.close()
remove_image()
@require_features([RBD_FEATURE_STRIPINGV2])
def test_with_params(self):
global features
self.image.create_snap('snap2')
self.image.protect_snap('snap2')
clone_name2 = get_temp_image_name()
self.rbd.clone(ioctx, image_name, 'snap2', ioctx, clone_name2,
features,
self.image.stat()['order'], self.image.stripe_unit(),
self.image.stripe_count())
self.rbd.remove(ioctx, clone_name2)
self.image.unprotect_snap('snap2')
self.image.remove_snap('snap2')
def test_unprotected(self):
self.image.create_snap('snap2')
global features
clone_name2 = get_temp_image_name()
assert_raises(InvalidArgument, self.rbd.clone, ioctx, image_name,
'snap2', ioctx, clone_name2, features)
self.image.remove_snap('snap2')
def test_unprotect_with_children(self):
global features
# can't remove a snapshot that has dependent clones
assert_raises(ImageBusy, self.image.remove_snap, 'snap1')
# validate parent info of clone created by TestClone.setUp
(pool, image, snap) = self.clone.parent_info()
eq(pool, pool_name)
eq(image, image_name)
eq(snap, 'snap1')
# create a new pool...
pool_name2 = get_temp_pool_name()
rados.create_pool(pool_name2)
other_ioctx = rados.open_ioctx(pool_name2)
# ...with a clone of the same parent
other_clone_name = get_temp_image_name()
self.rbd.clone(ioctx, image_name, 'snap1', other_ioctx,
other_clone_name, features)
self.other_clone = Image(other_ioctx, other_clone_name)
# validate its parent info
(pool, image, snap) = self.other_clone.parent_info()
eq(pool, pool_name)
eq(image, image_name)
eq(snap, 'snap1')
# can't unprotect snap with children
assert_raises(ImageBusy, self.image.unprotect_snap, 'snap1')
# 2 children, check that cannot remove the parent snap
assert_raises(ImageBusy, self.image.remove_snap, 'snap1')
# close and remove other pool's clone
self.other_clone.close()
self.rbd.remove(other_ioctx, other_clone_name)
# check that we cannot yet remove the parent snap
assert_raises(ImageBusy, self.image.remove_snap, 'snap1')
other_ioctx.close()
rados.delete_pool(pool_name2)
# unprotect, remove parent snap happen in cleanup, and should succeed
def test_stat(self):
image_info = self.image.stat()
clone_info = self.clone.stat()
eq(clone_info['size'], image_info['size'])
eq(clone_info['size'], self.clone.overlap())
def test_resize_stat(self):
self.clone.resize(IMG_SIZE // 2)
image_info = self.image.stat()
clone_info = self.clone.stat()
eq(clone_info['size'], IMG_SIZE // 2)
eq(image_info['size'], IMG_SIZE)
eq(self.clone.overlap(), IMG_SIZE // 2)
self.clone.resize(IMG_SIZE * 2)
image_info = self.image.stat()
clone_info = self.clone.stat()
eq(clone_info['size'], IMG_SIZE * 2)
eq(image_info['size'], IMG_SIZE)
eq(self.clone.overlap(), IMG_SIZE // 2)
def test_resize_io(self):
parent_data = self.image.read(IMG_SIZE // 2, 256)
self.image.resize(0)
self.clone.resize(IMG_SIZE // 2 + 128)
child_data = self.clone.read(IMG_SIZE // 2, 128)
eq(child_data, parent_data[:128])
self.clone.resize(IMG_SIZE)
child_data = self.clone.read(IMG_SIZE // 2, 256)
eq(child_data, parent_data[:128] + (b'\0' * 128))
self.clone.resize(IMG_SIZE // 2 + 1)
child_data = self.clone.read(IMG_SIZE // 2, 1)
eq(child_data, parent_data[0:1])
self.clone.resize(0)
self.clone.resize(IMG_SIZE)
child_data = self.clone.read(IMG_SIZE // 2, 256)
eq(child_data, b'\0' * 256)
def test_read(self):
parent_data = self.image.read(IMG_SIZE // 2, 256)
child_data = self.clone.read(IMG_SIZE // 2, 256)
eq(child_data, parent_data)
def test_write(self):
parent_data = self.image.read(IMG_SIZE // 2, 256)
new_data = rand_data(256)
self.clone.write(new_data, IMG_SIZE // 2 + 256)
child_data = self.clone.read(IMG_SIZE // 2 + 256, 256)
eq(child_data, new_data)
child_data = self.clone.read(IMG_SIZE // 2, 256)
eq(child_data, parent_data)
parent_data = self.image.read(IMG_SIZE // 2 + 256, 256)
eq(parent_data, b'\0' * 256)
def check_children(self, expected):
actual = self.image.list_children()
# dedup for cache pools until
# http://tracker.ceph.com/issues/8187 is fixed
deduped = set([(pool_name, image[1]) for image in actual])
eq(deduped, set(expected))
def test_list_children(self):
global ioctx
global features
self.image.set_snap('snap1')
self.check_children([(pool_name, self.clone_name)])
self.clone.close()
self.rbd.remove(ioctx, self.clone_name)
eq(self.image.list_children(), [])
clone_name = get_temp_image_name() + '_'
expected_children = []
for i in range(10):
self.rbd.clone(ioctx, image_name, 'snap1', ioctx,
clone_name + str(i), features)
expected_children.append((pool_name, clone_name + str(i)))
self.check_children(expected_children)
for i in range(10):
self.rbd.remove(ioctx, clone_name + str(i))
expected_children.pop(0)
self.check_children(expected_children)
eq(self.image.list_children(), [])
self.rbd.clone(ioctx, image_name, 'snap1', ioctx, self.clone_name,
features)
self.check_children([(pool_name, self.clone_name)])
self.clone = Image(ioctx, self.clone_name)
def test_flatten_errors(self):
# test that we can't flatten a non-clone
assert_raises(InvalidArgument, self.image.flatten)
# test that we can't flatten a snapshot
self.clone.create_snap('snap2')
self.clone.set_snap('snap2')
assert_raises(ReadOnlyImage, self.clone.flatten)
self.clone.remove_snap('snap2')
def check_flatten_with_order(self, new_order):
global ioctx
global features
clone_name2 = get_temp_image_name()
self.rbd.clone(ioctx, image_name, 'snap1', ioctx, clone_name2,
features, new_order)
#with Image(ioctx, 'clone2') as clone:
clone2 = Image(ioctx, clone_name2)
clone2.flatten()
eq(clone2.overlap(), 0)
clone2.close()
self.rbd.remove(ioctx, clone_name2)
# flatten after resizing to non-block size
self.rbd.clone(ioctx, image_name, 'snap1', ioctx, clone_name2,
features, new_order)
with Image(ioctx, clone_name2) as clone:
clone.resize(IMG_SIZE // 2 - 1)
clone.flatten()
eq(0, clone.overlap())
self.rbd.remove(ioctx, clone_name2)
# flatten after resizing to non-block size
self.rbd.clone(ioctx, image_name, 'snap1', ioctx, clone_name2,
features, new_order)
with Image(ioctx, clone_name2) as clone:
clone.resize(IMG_SIZE // 2 + 1)
clone.flatten()
eq(clone.overlap(), 0)
self.rbd.remove(ioctx, clone_name2)
def test_flatten_basic(self):
self.check_flatten_with_order(IMG_ORDER)
def test_flatten_smaller_order(self):
self.check_flatten_with_order(IMG_ORDER - 2)
def test_flatten_larger_order(self):
self.check_flatten_with_order(IMG_ORDER + 2)
def test_flatten_drops_cache(self):
global ioctx
global features
clone_name2 = get_temp_image_name()
self.rbd.clone(ioctx, image_name, 'snap1', ioctx, clone_name2,
features, IMG_ORDER)
with Image(ioctx, clone_name2) as clone:
with Image(ioctx, clone_name2) as clone2:
# cache object non-existence
data = clone.read(IMG_SIZE // 2, 256)
clone2_data = clone2.read(IMG_SIZE // 2, 256)
eq(data, clone2_data)
clone.flatten()
assert_raises(ImageNotFound, clone.parent_info)
assert_raises(ImageNotFound, clone2.parent_info)
after_flatten = clone.read(IMG_SIZE // 2, 256)
eq(data, after_flatten)
after_flatten = clone2.read(IMG_SIZE // 2, 256)
eq(data, after_flatten)
self.rbd.remove(ioctx, clone_name2)
def test_flatten_multi_level(self):
self.clone.create_snap('snap2')
self.clone.protect_snap('snap2')
clone_name3 = get_temp_image_name()
self.rbd.clone(ioctx, self.clone_name, 'snap2', ioctx, clone_name3,
features)
self.clone.flatten()
with Image(ioctx, clone_name3) as clone3:
clone3.flatten()
self.clone.unprotect_snap('snap2')
self.clone.remove_snap('snap2')
self.rbd.remove(ioctx, clone_name3)
def test_resize_flatten_multi_level(self):
self.clone.create_snap('snap2')
self.clone.protect_snap('snap2')
clone_name3 = get_temp_image_name()
self.rbd.clone(ioctx, self.clone_name, 'snap2', ioctx, clone_name3,
features)
self.clone.resize(1)
orig_data = self.image.read(0, 256)
with Image(ioctx, clone_name3) as clone3:
clone3_data = clone3.read(0, 256)
eq(orig_data, clone3_data)
self.clone.flatten()
with Image(ioctx, clone_name3) as clone3:
clone3_data = clone3.read(0, 256)
eq(orig_data, clone3_data)
self.rbd.remove(ioctx, clone_name3)
self.clone.unprotect_snap('snap2')
self.clone.remove_snap('snap2')
class TestClone(object):
@require_features([RBD_FEATURE_LAYERING])
def setUp(self):
global ioctx
global features
self.rbd = RBD()
create_image()
self.image = Image(ioctx, image_name)
data = rand_data(256)
self.image.write(data, IMG_SIZE / 2)
self.image.create_snap('snap1')
global features
self.image.protect_snap('snap1')
self.clone_name = get_temp_image_name()
self.rbd.clone(ioctx, image_name, 'snap1', ioctx, self.clone_name,
features)
self.clone = Image(ioctx, self.clone_name)
def tearDown(self):
global ioctx
self.clone.close()
self.rbd.remove(ioctx, self.clone_name)
self.image.unprotect_snap('snap1')
self.image.remove_snap('snap1')
self.image.close()
remove_image()
def test_unprotected(self):
self.image.create_snap('snap2')
global features
clone_name2 = get_temp_image_name()
assert_raises(InvalidArgument, self.rbd.clone, ioctx, image_name,
'snap2', ioctx, clone_name2, features)
self.image.remove_snap('snap2')
def test_unprotect_with_children(self):
global features
# can't remove a snapshot that has dependent clones
assert_raises(ImageBusy, self.image.remove_snap, 'snap1')
# validate parent info of clone created by TestClone.setUp
(pool, image, snap) = self.clone.parent_info()
eq(pool, pool_name)
eq(image, image_name)
eq(snap, 'snap1')
# create a new pool...
pool_name2 = get_temp_pool_name()
rados.create_pool(pool_name2)
other_ioctx = rados.open_ioctx(pool_name2)
# ...with a clone of the same parent
other_clone_name = get_temp_image_name()
self.rbd.clone(ioctx, image_name, 'snap1', other_ioctx,
other_clone_name, features)
self.other_clone = Image(other_ioctx, other_clone_name)
# validate its parent info
(pool, image, snap) = self.other_clone.parent_info()
eq(pool, pool_name)
eq(image, image_name)
eq(snap, 'snap1')
# can't unprotect snap with children
assert_raises(ImageBusy, self.image.unprotect_snap, 'snap1')
# 2 children, check that cannot remove the parent snap
assert_raises(ImageBusy, self.image.remove_snap, 'snap1')
# close and remove other pool's clone
self.other_clone.close()
self.rbd.remove(other_ioctx, other_clone_name)
# check that we cannot yet remove the parent snap
assert_raises(ImageBusy, self.image.remove_snap, 'snap1')
other_ioctx.close()
rados.delete_pool(pool_name2)
# unprotect, remove parent snap happen in cleanup, and should succeed
def test_stat(self):
image_info = self.image.stat()
clone_info = self.clone.stat()
eq(clone_info['size'], image_info['size'])
eq(clone_info['size'], self.clone.overlap())
def test_resize_stat(self):
self.clone.resize(IMG_SIZE / 2)
image_info = self.image.stat()
clone_info = self.clone.stat()
eq(clone_info['size'], IMG_SIZE / 2)
eq(image_info['size'], IMG_SIZE)
eq(self.clone.overlap(), IMG_SIZE / 2)
self.clone.resize(IMG_SIZE * 2)
image_info = self.image.stat()
clone_info = self.clone.stat()
eq(clone_info['size'], IMG_SIZE * 2)
eq(image_info['size'], IMG_SIZE)
eq(self.clone.overlap(), IMG_SIZE / 2)
def test_resize_io(self):
parent_data = self.image.read(IMG_SIZE / 2, 256)
self.image.resize(0)
self.clone.resize(IMG_SIZE / 2 + 128)
child_data = self.clone.read(IMG_SIZE / 2, 128)
eq(child_data, parent_data[:128])
self.clone.resize(IMG_SIZE)
child_data = self.clone.read(IMG_SIZE / 2, 256)
eq(child_data, parent_data[:128] + ('\0' * 128))
self.clone.resize(IMG_SIZE / 2 + 1)
child_data = self.clone.read(IMG_SIZE / 2, 1)
eq(child_data, parent_data[0])
self.clone.resize(0)
self.clone.resize(IMG_SIZE)
child_data = self.clone.read(IMG_SIZE / 2, 256)
eq(child_data, '\0' * 256)
def test_read(self):
parent_data = self.image.read(IMG_SIZE / 2, 256)
child_data = self.clone.read(IMG_SIZE / 2, 256)
eq(child_data, parent_data)
def test_write(self):
parent_data = self.image.read(IMG_SIZE / 2, 256)
new_data = rand_data(256)
self.clone.write(new_data, IMG_SIZE / 2 + 256)
child_data = self.clone.read(IMG_SIZE / 2 + 256, 256)
eq(child_data, new_data)
child_data = self.clone.read(IMG_SIZE / 2, 256)
eq(child_data, parent_data)
parent_data = self.image.read(IMG_SIZE / 2 + 256, 256)
eq(parent_data, '\0' * 256)
def check_children(self, expected):
actual = self.image.list_children()
# dedup for cache pools until
# http://tracker.ceph.com/issues/8187 is fixed
deduped = set([(pool_name, image[1]) for image in actual])
eq(deduped, set(expected))
def test_list_children(self):
global ioctx
global features
self.image.set_snap('snap1')
self.check_children([(pool_name, self.clone_name)])
self.clone.close()
self.rbd.remove(ioctx, self.clone_name)
eq(self.image.list_children(), [])
clone_name = get_temp_image_name() + '_'
expected_children = []
for i in xrange(10):
self.rbd.clone(ioctx, image_name, 'snap1', ioctx,
clone_name + str(i), features)
expected_children.append((pool_name, clone_name + str(i)))
self.check_children(expected_children)
for i in xrange(10):
self.rbd.remove(ioctx, clone_name + str(i))
expected_children.pop(0)
self.check_children(expected_children)
eq(self.image.list_children(), [])
self.rbd.clone(ioctx, image_name, 'snap1', ioctx, self.clone_name,
features)
self.check_children([(pool_name, self.clone_name)])
self.clone = Image(ioctx, self.clone_name)
def test_flatten_errors(self):
# test that we can't flatten a non-clone
assert_raises(InvalidArgument, self.image.flatten)
# test that we can't flatten a snapshot
self.clone.create_snap('snap2')
self.clone.set_snap('snap2')
assert_raises(ReadOnlyImage, self.clone.flatten)
self.clone.remove_snap('snap2')
def check_flatten_with_order(self, new_order):
global ioctx
global features
clone_name2 = get_temp_image_name()
self.rbd.clone(ioctx, image_name, 'snap1', ioctx, clone_name2,
features, new_order)
#with Image(ioctx, 'clone2') as clone:
clone2 = Image(ioctx, clone_name2)
clone2.flatten()
eq(clone2.overlap(), 0)
clone2.close()
self.rbd.remove(ioctx, clone_name2)
# flatten after resizing to non-block size
self.rbd.clone(ioctx, image_name, 'snap1', ioctx, clone_name2,
features, new_order)
with Image(ioctx, clone_name2) as clone:
clone.resize(IMG_SIZE / 2 - 1)
clone.flatten()
eq(0, clone.overlap())
self.rbd.remove(ioctx, clone_name2)
# flatten after resizing to non-block size
self.rbd.clone(ioctx, image_name, 'snap1', ioctx, clone_name2,
features, new_order)
with Image(ioctx, clone_name2) as clone:
clone.resize(IMG_SIZE / 2 + 1)
clone.flatten()
eq(clone.overlap(), 0)
self.rbd.remove(ioctx, clone_name2)
def test_flatten_basic(self):
self.check_flatten_with_order(IMG_ORDER)
def test_flatten_smaller_order(self):
self.check_flatten_with_order(IMG_ORDER - 2)
def test_flatten_larger_order(self):
self.check_flatten_with_order(IMG_ORDER + 2)
def test_flatten_drops_cache(self):
global ioctx
global features
clone_name2 = get_temp_image_name()
self.rbd.clone(ioctx, image_name, 'snap1', ioctx, clone_name2,
features, IMG_ORDER)
with Image(ioctx, clone_name2) as clone:
with Image(ioctx, clone_name2) as clone2:
# cache object non-existence
data = clone.read(IMG_SIZE / 2, 256)
clone2_data = clone2.read(IMG_SIZE / 2, 256)
eq(data, clone2_data)
clone.flatten()
assert_raises(ImageNotFound, clone.parent_info)
assert_raises(ImageNotFound, clone2.parent_info)
after_flatten = clone.read(IMG_SIZE / 2, 256)
eq(data, after_flatten)
after_flatten = clone2.read(IMG_SIZE / 2, 256)
eq(data, after_flatten)
self.rbd.remove(ioctx, clone_name2)
def test_flatten_multi_level(self):
self.clone.create_snap('snap2')
self.clone.protect_snap('snap2')
clone_name3 = get_temp_image_name()
self.rbd.clone(ioctx, self.clone_name, 'snap2', ioctx, clone_name3,
features)
self.clone.flatten()
with Image(ioctx, clone_name3) as clone3:
clone3.flatten()
self.clone.unprotect_snap('snap2')
self.clone.remove_snap('snap2')
self.rbd.remove(ioctx, clone_name3)
def test_resize_flatten_multi_level(self):
self.clone.create_snap('snap2')
self.clone.protect_snap('snap2')
clone_name3 = get_temp_image_name()
self.rbd.clone(ioctx, self.clone_name, 'snap2', ioctx, clone_name3,
features)
self.clone.resize(1)
orig_data = self.image.read(0, 256)
with Image(ioctx, clone_name3) as clone3:
clone3_data = clone3.read(0, 256)
eq(orig_data, clone3_data)
self.clone.flatten()
with Image(ioctx, clone_name3) as clone3:
clone3_data = clone3.read(0, 256)
eq(orig_data, clone3_data)
self.rbd.remove(ioctx, clone_name3)
self.clone.unprotect_snap('snap2')
self.clone.remove_snap('snap2')
class TestClone(object):
@require_features([RBD_FEATURE_LAYERING])
def setUp(self):
global ioctx
global features
self.rbd = RBD()
create_image()
self.image = Image(ioctx, IMG_NAME)
data = rand_data(256)
self.image.write(data, IMG_SIZE / 2)
self.image.create_snap('snap1')
global features
self.image.protect_snap('snap1')
self.rbd.clone(ioctx, IMG_NAME, 'snap1', ioctx, 'clone', features)
self.clone = Image(ioctx, 'clone')
def tearDown(self):
global ioctx
self.clone.close()
self.rbd.remove(ioctx, 'clone')
self.image.unprotect_snap('snap1')
self.image.remove_snap('snap1')
self.image.close()
remove_image()
def test_unprotected(self):
self.image.create_snap('snap2')
global features
assert_raises(InvalidArgument, self.rbd.clone, ioctx, IMG_NAME, 'snap2', ioctx, 'clone2', features)
self.image.remove_snap('snap2')
def test_unprotect_with_children(self):
global features
# can't remove a snapshot that has dependent clones
assert_raises(ImageBusy, self.image.remove_snap, 'snap1')
# validate parent info of clone created by TestClone.setUp
(pool, image, snap) = self.clone.parent_info()
eq(pool, 'rbd')
eq(image, IMG_NAME)
eq(snap, 'snap1')
# create a new pool...
rados.create_pool('rbd2')
other_ioctx = rados.open_ioctx('rbd2')
# ...with a clone of the same parent
self.rbd.clone(ioctx, IMG_NAME, 'snap1', other_ioctx, 'other_clone', features)
self.other_clone = Image(other_ioctx, 'other_clone')
# validate its parent info
(pool, image, snap) = self.other_clone.parent_info()
eq(pool, 'rbd')
eq(image, IMG_NAME)
eq(snap, 'snap1')
# can't unprotect snap with children
assert_raises(ImageBusy, self.image.unprotect_snap, 'snap1')
# 2 children, check that cannot remove the parent snap
assert_raises(ImageBusy, self.image.remove_snap, 'snap1')
# close and remove other pool's clone
self.other_clone.close()
self.rbd.remove(other_ioctx, 'other_clone')
# check that we cannot yet remove the parent snap
assert_raises(ImageBusy, self.image.remove_snap, 'snap1')
other_ioctx.close()
rados.delete_pool('rbd2')
# unprotect, remove parent snap happen in cleanup, and should succeed
def test_stat(self):
image_info = self.image.stat()
clone_info = self.clone.stat()
eq(clone_info['size'], image_info['size'])
eq(clone_info['size'], self.clone.overlap())
def test_resize_stat(self):
self.clone.resize(IMG_SIZE / 2)
image_info = self.image.stat()
clone_info = self.clone.stat()
eq(clone_info['size'], IMG_SIZE / 2)
eq(image_info['size'], IMG_SIZE)
eq(self.clone.overlap(), IMG_SIZE / 2)
self.clone.resize(IMG_SIZE * 2)
image_info = self.image.stat()
clone_info = self.clone.stat()
eq(clone_info['size'], IMG_SIZE * 2)
eq(image_info['size'], IMG_SIZE)
eq(self.clone.overlap(), IMG_SIZE / 2)
def test_resize_io(self):
parent_data = self.image.read(IMG_SIZE / 2, 256)
self.clone.resize(IMG_SIZE / 2 + 128)
child_data = self.clone.read(IMG_SIZE / 2, 128)
eq(child_data, parent_data[:128])
self.clone.resize(IMG_SIZE)
child_data = self.clone.read(IMG_SIZE / 2, 256)
eq(child_data, parent_data[:128] + ('\0' * 128))
self.clone.resize(IMG_SIZE / 2 + 1)
child_data = self.clone.read(IMG_SIZE / 2, 1)
eq(child_data, parent_data[0])
self.clone.resize(0)
self.clone.resize(IMG_SIZE)
child_data = self.clone.read(IMG_SIZE / 2, 256)
eq(child_data, '\0' * 256)
def test_read(self):
parent_data = self.image.read(IMG_SIZE / 2, 256)
child_data = self.clone.read(IMG_SIZE / 2, 256)
eq(child_data, parent_data)
def test_write(self):
parent_data = self.image.read(IMG_SIZE / 2, 256)
new_data = rand_data(256)
self.clone.write(new_data, IMG_SIZE / 2 + 256)
child_data = self.clone.read(IMG_SIZE / 2 + 256, 256)
eq(child_data, new_data)
child_data = self.clone.read(IMG_SIZE / 2, 256)
eq(child_data, parent_data)
parent_data = self.image.read(IMG_SIZE / 2 + 256, 256)
eq(parent_data, '\0' * 256)
def test_list_children(self):
global ioctx
global features
self.image.set_snap('snap1')
eq(self.image.list_children(), [('rbd', 'clone')])
self.rbd.remove(ioctx, 'clone')
eq(self.image.list_children(), [])
expected_children = []
for i in xrange(10):
self.rbd.clone(ioctx, IMG_NAME, 'snap1', ioctx, 'clone%d' % i, features)
expected_children.append(('rbd', 'clone%d' % i))
eq(self.image.list_children(), expected_children)
for i in xrange(10):
self.rbd.remove(ioctx, 'clone%d' % i)
expected_children.pop(0)
eq(self.image.list_children(), expected_children)
eq(self.image.list_children(), [])
self.rbd.clone(ioctx, IMG_NAME, 'snap1', ioctx, 'clone', features)
eq(self.image.list_children(), [('rbd', 'clone')])
class TestClone(object):
@require_features([RBD_FEATURE_LAYERING])
def setUp(self):
global ioctx
global features
self.rbd = RBD()
create_image()
self.image = Image(ioctx, IMG_NAME)
data = rand_data(256)
self.image.write(data, IMG_SIZE / 2)
self.image.create_snap('snap1')
global features
self.image.protect_snap('snap1')
self.rbd.clone(ioctx, IMG_NAME, 'snap1', ioctx, 'clone', features)
self.clone = Image(ioctx, 'clone')
def tearDown(self):
global ioctx
self.clone.close()
self.rbd.remove(ioctx, 'clone')
self.image.unprotect_snap('snap1')
self.image.remove_snap('snap1')
self.image.close()
remove_image()
def test_unprotected(self):
self.image.create_snap('snap2')
global features
assert_raises(InvalidArgument, self.rbd.clone, ioctx, IMG_NAME,
'snap2', ioctx, 'clone2', features)
self.image.remove_snap('snap2')
def test_unprotect_with_children(self):
global features
# can't remove a snapshot that has dependent clones
assert_raises(ImageBusy, self.image.remove_snap, 'snap1')
# validate parent info of clone created by TestClone.setUp
(pool, image, snap) = self.clone.parent_info()
eq(pool, 'rbd')
eq(image, IMG_NAME)
eq(snap, 'snap1')
# create a new pool...
rados.create_pool('rbd2')
other_ioctx = rados.open_ioctx('rbd2')
# ...with a clone of the same parent
self.rbd.clone(ioctx, IMG_NAME, 'snap1', other_ioctx, 'other_clone',
features)
self.other_clone = Image(other_ioctx, 'other_clone')
# validate its parent info
(pool, image, snap) = self.other_clone.parent_info()
eq(pool, 'rbd')
eq(image, IMG_NAME)
eq(snap, 'snap1')
# 2 children, check that cannot remove the parent snap
assert_raises(ImageBusy, self.image.remove_snap, 'snap1')
# close and remove other pool's clone
self.other_clone.close()
self.rbd.remove(other_ioctx, 'other_clone')
# check that we cannot yet remove the parent snap
assert_raises(ImageBusy, self.image.remove_snap, 'snap1')
other_ioctx.close()
rados.delete_pool('rbd2')
# unprotect, remove parent snap happen in cleanup, and should succeed
def test_stat(self):
image_info = self.image.stat()
clone_info = self.clone.stat()
eq(clone_info['size'], image_info['size'])
eq(clone_info['size'], self.clone.overlap())
def test_resize_stat(self):
self.clone.resize(IMG_SIZE / 2)
image_info = self.image.stat()
clone_info = self.clone.stat()
eq(clone_info['size'], IMG_SIZE / 2)
eq(image_info['size'], IMG_SIZE)
eq(self.clone.overlap(), IMG_SIZE / 2)
self.clone.resize(IMG_SIZE * 2)
image_info = self.image.stat()
clone_info = self.clone.stat()
eq(clone_info['size'], IMG_SIZE * 2)
eq(image_info['size'], IMG_SIZE)
eq(self.clone.overlap(), IMG_SIZE / 2)
def test_resize_io(self):
parent_data = self.image.read(IMG_SIZE / 2, 256)
self.clone.resize(IMG_SIZE / 2 + 128)
child_data = self.clone.read(IMG_SIZE / 2, 128)
eq(child_data, parent_data[:128])
self.clone.resize(IMG_SIZE)
child_data = self.clone.read(IMG_SIZE / 2, 256)
eq(child_data, parent_data[:128] + ('\0' * 128))
self.clone.resize(IMG_SIZE / 2 + 1)
child_data = self.clone.read(IMG_SIZE / 2, 1)
eq(child_data, parent_data[0])
self.clone.resize(0)
self.clone.resize(IMG_SIZE)
child_data = self.clone.read(IMG_SIZE / 2, 256)
eq(child_data, '\0' * 256)
def test_read(self):
parent_data = self.image.read(IMG_SIZE / 2, 256)
child_data = self.clone.read(IMG_SIZE / 2, 256)
eq(child_data, parent_data)
def test_write(self):
parent_data = self.image.read(IMG_SIZE / 2, 256)
new_data = rand_data(256)
self.clone.write(new_data, IMG_SIZE / 2 + 256)
child_data = self.clone.read(IMG_SIZE / 2 + 256, 256)
eq(child_data, new_data)
child_data = self.clone.read(IMG_SIZE / 2, 256)
eq(child_data, parent_data)
parent_data = self.image.read(IMG_SIZE / 2 + 256, 256)
eq(parent_data, '\0' * 256)
def test_list_children(self):
global ioctx
global features
self.image.set_snap('snap1')
eq(self.image.list_children(), [('rbd', 'clone')])
self.rbd.remove(ioctx, 'clone')
eq(self.image.list_children(), [])
expected_children = []
for i in xrange(10):
self.rbd.clone(ioctx, IMG_NAME, 'snap1', ioctx, 'clone%d' % i,
features)
expected_children.append(('rbd', 'clone%d' % i))
eq(self.image.list_children(), expected_children)
for i in xrange(10):
self.rbd.remove(ioctx, 'clone%d' % i)
expected_children.pop(0)
eq(self.image.list_children(), expected_children)
eq(self.image.list_children(), [])
self.rbd.clone(ioctx, IMG_NAME, 'snap1', ioctx, 'clone', features)
eq(self.image.list_children(), [('rbd', 'clone')])
class TestClone(object):
@require_features([RBD_FEATURE_LAYERING])
def setUp(self):
global ioctx
global features
self.rbd = RBD()
create_image()
self.image = Image(ioctx, IMG_NAME)
data = rand_data(256)
self.image.write(data, IMG_SIZE / 2)
self.image.create_snap('snap1')
global features
self.image.protect_snap('snap1')
self.rbd.clone(ioctx, IMG_NAME, 'snap1', ioctx, 'clone', features)
self.clone = Image(ioctx, 'clone')
def tearDown(self):
global ioctx
self.clone.close()
self.rbd.remove(ioctx, 'clone')
self.image.unprotect_snap('snap1')
self.image.remove_snap('snap1')
self.image.close()
remove_image()
def test_unprotected(self):
self.image.create_snap('snap2')
global features
assert_raises(InvalidArgument, self.rbd.clone, ioctx, IMG_NAME,
'snap2', ioctx, 'clone2', features)
self.image.remove_snap('snap2')
def test_unprotect_with_children(self):
global features
# can't remove a snapshot that has dependent clones
assert_raises(ImageBusy, self.image.remove_snap, 'snap1')
# validate parent info of clone created by TestClone.setUp
(pool, image, snap) = self.clone.parent_info()
eq(pool, 'rbd')
eq(image, IMG_NAME)
eq(snap, 'snap1')
# create a new pool...
rados.create_pool('rbd2')
other_ioctx = rados.open_ioctx('rbd2')
# ...with a clone of the same parent
self.rbd.clone(ioctx, IMG_NAME, 'snap1', other_ioctx, 'other_clone',
features)
self.other_clone = Image(other_ioctx, 'other_clone')
# validate its parent info
(pool, image, snap) = self.other_clone.parent_info()
eq(pool, 'rbd')
eq(image, IMG_NAME)
eq(snap, 'snap1')
# can't unprotect snap with children
assert_raises(ImageBusy, self.image.unprotect_snap, 'snap1')
# 2 children, check that cannot remove the parent snap
assert_raises(ImageBusy, self.image.remove_snap, 'snap1')
# close and remove other pool's clone
self.other_clone.close()
self.rbd.remove(other_ioctx, 'other_clone')
# check that we cannot yet remove the parent snap
assert_raises(ImageBusy, self.image.remove_snap, 'snap1')
other_ioctx.close()
rados.delete_pool('rbd2')
# unprotect, remove parent snap happen in cleanup, and should succeed
def test_stat(self):
image_info = self.image.stat()
clone_info = self.clone.stat()
eq(clone_info['size'], image_info['size'])
eq(clone_info['size'], self.clone.overlap())
def test_resize_stat(self):
self.clone.resize(IMG_SIZE / 2)
image_info = self.image.stat()
clone_info = self.clone.stat()
eq(clone_info['size'], IMG_SIZE / 2)
eq(image_info['size'], IMG_SIZE)
eq(self.clone.overlap(), IMG_SIZE / 2)
self.clone.resize(IMG_SIZE * 2)
image_info = self.image.stat()
clone_info = self.clone.stat()
eq(clone_info['size'], IMG_SIZE * 2)
eq(image_info['size'], IMG_SIZE)
eq(self.clone.overlap(), IMG_SIZE / 2)
def test_resize_io(self):
parent_data = self.image.read(IMG_SIZE / 2, 256)
self.clone.resize(IMG_SIZE / 2 + 128)
child_data = self.clone.read(IMG_SIZE / 2, 128)
eq(child_data, parent_data[:128])
self.clone.resize(IMG_SIZE)
child_data = self.clone.read(IMG_SIZE / 2, 256)
eq(child_data, parent_data[:128] + ('\0' * 128))
self.clone.resize(IMG_SIZE / 2 + 1)
child_data = self.clone.read(IMG_SIZE / 2, 1)
eq(child_data, parent_data[0])
self.clone.resize(0)
self.clone.resize(IMG_SIZE)
child_data = self.clone.read(IMG_SIZE / 2, 256)
eq(child_data, '\0' * 256)
def test_read(self):
parent_data = self.image.read(IMG_SIZE / 2, 256)
child_data = self.clone.read(IMG_SIZE / 2, 256)
eq(child_data, parent_data)
def test_write(self):
parent_data = self.image.read(IMG_SIZE / 2, 256)
new_data = rand_data(256)
self.clone.write(new_data, IMG_SIZE / 2 + 256)
child_data = self.clone.read(IMG_SIZE / 2 + 256, 256)
eq(child_data, new_data)
child_data = self.clone.read(IMG_SIZE / 2, 256)
eq(child_data, parent_data)
parent_data = self.image.read(IMG_SIZE / 2 + 256, 256)
eq(parent_data, '\0' * 256)
def test_list_children(self):
global ioctx
global features
self.image.set_snap('snap1')
eq(self.image.list_children(), [('rbd', 'clone')])
self.clone.close()
self.rbd.remove(ioctx, 'clone')
eq(self.image.list_children(), [])
expected_children = []
for i in xrange(10):
self.rbd.clone(ioctx, IMG_NAME, 'snap1', ioctx, 'clone%d' % i,
features)
expected_children.append(('rbd', 'clone%d' % i))
eq(self.image.list_children(), expected_children)
for i in xrange(10):
self.rbd.remove(ioctx, 'clone%d' % i)
expected_children.pop(0)
eq(self.image.list_children(), expected_children)
eq(self.image.list_children(), [])
self.rbd.clone(ioctx, IMG_NAME, 'snap1', ioctx, 'clone', features)
eq(self.image.list_children(), [('rbd', 'clone')])
self.clone = Image(ioctx, 'clone')
def test_flatten_errors(self):
# test that we can't flatten a non-clone
assert_raises(InvalidArgument, self.image.flatten)
# test that we can't flatten a snapshot
self.clone.create_snap('snap2')
self.clone.set_snap('snap2')
assert_raises(ReadOnlyImage, self.clone.flatten)
self.clone.remove_snap('snap2')
def check_flatten_with_order(self, new_order):
global ioctx
global features
self.rbd.clone(ioctx, IMG_NAME, 'snap1', ioctx, 'clone2', features,
new_order)
#with Image(ioctx, 'clone2') as clone:
clone2 = Image(ioctx, 'clone2')
clone2.flatten()
eq(clone2.overlap(), 0)
clone2.close()
self.rbd.remove(ioctx, 'clone2')
# flatten after resizing to non-block size
self.rbd.clone(ioctx, IMG_NAME, 'snap1', ioctx, 'clone2', features,
new_order)
with Image(ioctx, 'clone2') as clone:
clone.resize(IMG_SIZE / 2 - 1)
clone.flatten()
eq(0, clone.overlap())
self.rbd.remove(ioctx, 'clone2')
# flatten after resizing to non-block size
self.rbd.clone(ioctx, IMG_NAME, 'snap1', ioctx, 'clone2', features,
new_order)
with Image(ioctx, 'clone2') as clone:
clone.resize(IMG_SIZE / 2 + 1)
clone.flatten()
eq(clone.overlap(), 0)
self.rbd.remove(ioctx, 'clone2')
def test_flatten_basic(self):
self.check_flatten_with_order(IMG_ORDER)
def test_flatten_smaller_order(self):
self.check_flatten_with_order(IMG_ORDER - 2)
def test_flatten_larger_order(self):
self.check_flatten_with_order(IMG_ORDER + 2)
def test_flatten_drops_cache(self):
global ioctx
global features
self.rbd.clone(ioctx, IMG_NAME, 'snap1', ioctx, 'clone2', features,
IMG_ORDER)
with Image(ioctx, 'clone2') as clone:
with Image(ioctx, 'clone2') as clone2:
# cache object non-existence
data = clone.read(IMG_SIZE / 2, 256)
clone2_data = clone2.read(IMG_SIZE / 2, 256)
eq(data, clone2_data)
clone.flatten()
assert_raises(ImageNotFound, clone.parent_info)
assert_raises(ImageNotFound, clone2.parent_info)
after_flatten = clone.read(IMG_SIZE / 2, 256)
eq(data, after_flatten)
after_flatten = clone2.read(IMG_SIZE / 2, 256)
eq(data, after_flatten)
self.rbd.remove(ioctx, 'clone2')