def yield_local_backend(bi):
backend_dir = tempfile.mkdtemp(prefix='s3ql-backend-')
backend = LocalBackend('local://' + backend_dir, None, None)
backend.unittest_info = Namespace()
backend.unittest_info.retry_time = 0
try:
yield backend
finally:
backend.close()
shutil.rmtree(backend_dir)
def test(self):
self.mkfs()
# Get backend instance
plain_backend = LocalBackend(self.storage_url, None, None)
# Save metadata
meta = plain_backend['s3ql_metadata']
# Mount file system
self.mount()
# Increase sequence number
seq_no = get_seq_no(plain_backend)
plain_backend['s3ql_seq_no_%d' % (seq_no + 1)] = b'Empty'
# Create a file, so that there's metadata to flush
fname = os.path.join(self.mnt_dir, 'file1')
with open(fname, 'w') as fh:
fh.write('hello, world')
# Try to upload metadata
s3ql.ctrl.main(['upload-meta', self.mnt_dir])
# Try to write. We repeat a few times, since the metadata upload
# happens asynchronously.
with pytest.raises(PermissionError):
for _ in range(10):
with open(fname + 'barz', 'w') as fh:
fh.write('foobar')
time.sleep(1)
self.reg_output(
r'^ERROR: Remote metadata is newer than local '
'\(\d+ vs \d+\), refusing to overwrite(?: and switching '
'to failsafe mode)?!$',
count=2)
self.reg_output(
r'^WARNING: File system errors encountered, marking for '
'fsck\.$',
count=1)
self.reg_output(
r'^ERROR: The locally cached metadata will be '
'\*lost\* the next .+$',
count=1)
self.umount()
# Assert that remote metadata has not been overwritten
assert meta == plain_backend['s3ql_metadata']
plain_backend.close()
def test(self):
self.mkfs()
# Get backend instance
plain_backend = LocalBackend(self.storage_url, None, None)
# Save metadata
meta = plain_backend['s3ql_metadata']
# Mount file system
self.mount(fatal_warnings=False)
# Increase sequence number
seq_no = get_seq_no(plain_backend)
plain_backend['s3ql_seq_no_%d' % (seq_no+1)] = b'Empty'
# Create a file, so that there's metadata to flush
fname = os.path.join(self.mnt_dir, 'file1')
with open(fname, 'w') as fh:
fh.write('hello, world')
# Try to upload metadata
s3ql.ctrl.main(['upload-meta', self.mnt_dir])
# Try to write. We repeat a few times, since the metadata upload
# happens asynchronously.
with pytest.raises(PermissionError):
for _ in range(10):
with open(fname + 'barz', 'w') as fh:
fh.write('foobar')
time.sleep(1)
self.umount()
# Assert that remote metadata has not been overwritten
assert meta == plain_backend['s3ql_metadata']
plain_backend.close()