def test_read_bad_chain_raises(tmpdir):
# Create a good chain.
base_qcow2 = str(tmpdir.join("base.qcow2"))
op = qemuimg.create(base_qcow2, "1m", qemuimg.FORMAT.QCOW2)
op.run()
top = str(tmpdir.join("top.qcow2"))
op = qemuimg.create(top,
"1m",
qemuimg.FORMAT.QCOW2,
backing=base_qcow2,
backingFormat=qemuimg.FORMAT.QCOW2)
op.run()
# Create a broken chain using unsafe rebase with the wrong backing
# format.
base_raw = str(tmpdir.join("base.raw"))
op = qemuimg.create(base_raw, "1m", qemuimg.FORMAT.RAW)
op.run()
operation = qemuimg.rebase(top,
backing=base_raw,
format=qemuimg.FORMAT.QCOW2,
backingFormat=qemuimg.FORMAT.QCOW2,
unsafe=True)
operation.run()
with pytest.raises(cmdutils.Error):
qemuio.verify_pattern(top, qemuimg.FORMAT.QCOW2)
def test_skip_holes_during_merge_bitmaps(tmp_mount, vol_chain):
virtual_size = MiB
bitmap = 'bitmap'
# Create base parent volume
base_parent_vol = os.path.join(tmp_mount.path, 'base_parent.img')
op = qemuimg.create(
base_parent_vol,
size=virtual_size,
format=qemuimg.FORMAT.QCOW2,
qcow2Compat='1.1'
)
op.run()
# Rebase the volume chain on top of base parent volume
op = qemuimg.rebase(
vol_chain.base_vol, base_parent_vol, unsafe=True)
op.run()
# Add new bitmap to base parent volume
op = qemuimg.bitmap_add(base_parent_vol, bitmap)
op.run()
# Add new bitmap to top volume, base volume is missing that
# bitmap so there is a hole
op = qemuimg.bitmap_add(vol_chain.top_vol, bitmap)
op.run()
bitmaps.merge_bitmaps(
vol_chain.base_vol, vol_chain.top_vol,
base_parent_path=base_parent_vol)
info = qemuimg.info(vol_chain.base_vol)
assert 'bitmaps' not in info
def _rebase_operation(base, child):
backing = volume.getBackingVolumePath(base.imgUUID, base.volUUID)
backing_format = sc.fmt2str(base.getFormat())
operation = qemuimg.rebase(image=child.volumePath,
backing=backing,
format=qemuimg.FORMAT.QCOW2,
backingFormat=backing_format,
unsafe=True)
return operation
def _rebase_operation(base, child):
backing = volume.getBackingVolumePath(base.imgUUID, base.volUUID)
backing_format = sc.fmt2str(base.getFormat())
operation = qemuimg.rebase(image=child.volumePath,
backing=backing,
format=qemuimg.FORMAT.QCOW2,
backingFormat=backing_format,
unsafe=True)
return operation
def test_unexpected_backing_file(self):
with self.fake_volume(sc.COW_FORMAT) as vol:
# Simulate upload of qcow2 with unexpected backing file.
unexpected_volume = os.path.join(os.path.dirname(vol.volumePath),
"unexpected")
open(unexpected_volume, "w").close()
op = qemuimg.rebase(vol.volumePath, 'unexpected', unsafe=True)
op.run()
h = FakeHSM()
with pytest.raises(se.ImageVerificationError):
h.verify_untrusted_volume('sp', vol.sdUUID, vol.imgUUID,
vol.volUUID)
def test_no_backing_chain(nbd_env):
base, top = make_qemu_chain(nbd_env,
nbd_env.virtual_size,
sc.COW_FORMAT,
2,
qcow2_compat='1.1')
# Fill volumes with data.
qemuio.write_pattern(base.volumePath,
"qcow2",
offset=1 * MiB,
len=64 * KiB,
pattern=0xf0)
qemuio.write_pattern(top.volumePath,
"qcow2",
offset=2 * MiB,
len=64 * KiB,
pattern=0xf1)
# Download base volume.
config = {
"sd_id": base.sdUUID,
"img_id": base.imgUUID,
"vol_id": base.volUUID,
"readonly": True,
"backing_chain": False,
}
with nbd_server(config) as nbd_url:
download_from_nbd(nbd_url, nbd_env.dst)
compare_images(base.volumePath, nbd_env.dst, strict=True)
# Download top volume.
config = {
"sd_id": top.sdUUID,
"img_id": top.imgUUID,
"vol_id": top.volUUID,
"readonly": True,
"backing_chain": False,
}
with nbd_server(config) as nbd_url:
download_from_nbd(nbd_url, nbd_env.dst)
# Remove backing file from top volume, so we can compare to top.
op = qemuimg.rebase(top.volumePath, "", unsafe=True)
op.run()
compare_images(top.volumePath, nbd_env.dst, strict=True)
def test_wrong_backingfile(self):
with fake_file_env() as env:
vol = make_qemu_chain(env, self.SIZE, sc.COW_FORMAT, 2)[1]
# Simulate upload image with wrong backing_file.
wrong_volume = os.path.join(os.path.dirname(vol.volumePath),
"wrong")
open(wrong_volume, "w").close()
op = qemuimg.rebase(vol.volumePath, "wrong", unsafe=True)
op.run()
h = FakeHSM()
with pytest.raises(se.ImageVerificationError):
h.verify_untrusted_volume('sp', vol.sdUUID, vol.imgUUID,
vol.volUUID)
def test_read_bad_chain_raises(self):
with namedTemporaryDir() as tmpdir:
# Create a good chain.
base_qcow2 = os.path.join(tmpdir, "base.qcow2")
qemuimg.create(base_qcow2, "1m", qemuimg.FORMAT.QCOW2)
top = os.path.join(tmpdir, "top.qcow2")
qemuimg.create(top,
"1m",
qemuimg.FORMAT.QCOW2,
backing=base_qcow2,
backingFormat=qemuimg.FORMAT.QCOW2)
# Create a broken chain using unsafe rebase with the wrong backing
# format.
base_raw = os.path.join(tmpdir, "base.raw")
qemuimg.create(base_raw, "1m", qemuimg.FORMAT.RAW)
operation = qemuimg.rebase(top,
backing=base_raw,
format=qemuimg.FORMAT.QCOW2,
backingFormat=qemuimg.FORMAT.QCOW2,
unsafe=True)
operation.run()
with self.assertRaises(cmdutils.Error):
qemu_pattern_verify(top, qemuimg.FORMAT.QCOW2)
def test_read_bad_chain_raises(tmpdir):
# Create a good chain.
base_qcow2 = str(tmpdir.join("base.qcow2"))
op = qemuimg.create(base_qcow2, "1m", qemuimg.FORMAT.QCOW2)
op.run()
top = str(tmpdir.join("top.qcow2"))
op = qemuimg.create(top, "1m", qemuimg.FORMAT.QCOW2,
backing=base_qcow2,
backingFormat=qemuimg.FORMAT.QCOW2)
op.run()
# Create a broken chain using unsafe rebase with the wrong backing
# format.
base_raw = str(tmpdir.join("base.raw"))
op = qemuimg.create(base_raw, "1m", qemuimg.FORMAT.RAW)
op.run()
operation = qemuimg.rebase(top,
backing=base_raw,
format=qemuimg.FORMAT.QCOW2,
backingFormat=qemuimg.FORMAT.QCOW2,
unsafe=True)
operation.run()
with pytest.raises(cmdutils.Error):
qemuio.verify_pattern(top, qemuimg.FORMAT.QCOW2)
