def test_open_tcp(tmpdir, url_template, host, export):
image = str(tmpdir.join("image"))
with open(image, "wb") as f:
f.truncate(1024**3)
sock = nbd.TCPAddress(host, testutil.random_tcp_port())
url = url_template.format(port=sock.port)
log.debug("Trying url=%r export=%r", url, export)
with qemu_nbd.run(image, "raw", sock, export_name=export):
with nbd.open(urlparse(url)) as c:
assert c.export_size == 1024**3
def test_run_tcp(tmpfile):
with io.open(tmpfile, "r+b") as f:
f.truncate(1024**2)
addr = nbd.TCPAddress("localhost", testutil.random_tcp_port())
with qemu_nbd.run(tmpfile, "raw", addr):
# The helper already waited for the NBD socket, not wait needed.
assert sockutil.wait_for_socket(addr, 0.0)
# The socket must be closed, no wait needed.
assert not sockutil.wait_for_socket(addr, 0.0)
def test_get_nbd_backend(tmpdir, cfg, nbd_server, transport):
if transport == "unix":
nbd_server.sock = nbd.UnixAddress(tmpdir.join("sock"))
else:
nbd_server.sock = nbd.TCPAddress("localhost",
testutil.random_tcp_port())
nbd_server.start()
ticket = auth.Ticket(
testutil.create_ticket(url=urlunparse(nbd_server.url)))
req = Request()
b = backends.get(req, ticket, cfg).backend
assert b.name == "nbd"
def test_full_backup(tmpdir, fmt, transport):
disk_size = 1024**2
disk_part = disk_size // 4
disk = str(tmpdir.join("disk." + fmt))
backup_disk = str(tmpdir.join("backup.raw"))
# Create disk
qemu_img.create(disk, fmt, size=disk_size)
# Pupulate disk with data.
with qemu_nbd.open(disk, fmt) as d:
for i in range(0, disk_size, disk_part):
data = b"%d\n" % i
d.write(i, data.ljust(512))
d.flush()
if transport == "unix":
nbd_sock = nbd.UnixAddress(tmpdir.join("nbd.sock"))
else:
nbd_sock = nbd.TCPAddress("localhost", testutil.random_tcp_port())
# Backup using qemu-img convert.
with backup.full_backup(tmpdir, disk, fmt, nbd_sock):
log.debug("Backing up image with qemu-img")
qemu_img.convert(nbd_sock.url("sda"),
backup_disk,
src_fmt="raw",
dst_fmt="raw",
progress=True)
# Compare source and backup disks.
with qemu_nbd.open(disk, fmt, read_only=True) as d, \
io.open(backup_disk, "rb") as b:
for i in range(0, disk_size, disk_part):
b.seek(i)
assert d.read(i, 512) == b.read(512)
from ovirt_imageio._internal import nbd
from ovirt_imageio._internal import nbdutil
from ovirt_imageio._internal import qemu_img
from ovirt_imageio._internal import qemu_nbd
from ovirt_imageio._internal import sockutil
from . import testutil
from . marks import flaky_in_ovirt_ci
@pytest.mark.parametrize("addr,export,url", [
(nbd.UnixAddress("/sock"), None, "nbd:unix:/sock"),
(nbd.UnixAddress("/sock"), "", "nbd:unix:/sock"),
(nbd.UnixAddress("/sock"), "sda", "nbd:unix:/sock:exportname=sda"),
(nbd.TCPAddress("host", 10900), None, "nbd:host:10900"),
(nbd.TCPAddress("host", 10900), "", "nbd:host:10900"),
(nbd.TCPAddress("host", 10900), "sdb", "nbd:host:10900:exportname=sdb"),
])
def test_server_url(addr, export, url):
srv = qemu_nbd.Server("image", "raw", addr, export_name=export)
assert srv.url == urllib.parse.urlparse(url)
@pytest.mark.parametrize("fmt", ["raw", "qcow2"])
def test_open(tmpdir, fmt):
disk = str(tmpdir.join("disk." + fmt))
qemu_img.create(disk, fmt, size=1024**2)
offset = 64 * 1024
data = b"it works"
def test_tcp_address_invalid(host, port):
with pytest.raises(ValueError):
nbd.TCPAddress(host, port)
def nbd_sock(request, tmpdir):
if request.param == "unix":
return nbd.UnixAddress(tmpdir.join("sock"))
else:
return nbd.TCPAddress("localhost", testutil.random_tcp_port())