542 lines
23 KiB
Python
542 lines
23 KiB
Python
#!/usr/bin/python -u
|
|
# Copyright (c) 2010-2012 OpenStack Foundation
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
|
|
# implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
import itertools
|
|
from contextlib import contextmanager
|
|
import unittest
|
|
import uuid
|
|
import random
|
|
import time
|
|
import six
|
|
|
|
from swift.common.direct_client import DirectClientException
|
|
from swift.common.manager import Manager
|
|
from swift.common.utils import md5
|
|
from swift.obj.reconstructor import ObjectReconstructor
|
|
from test.probe.common import ECProbeTest
|
|
|
|
from swift.common import direct_client
|
|
|
|
from swiftclient import client, ClientException
|
|
|
|
|
|
class Body(object):
|
|
|
|
def __init__(self, total=3.5 * 2 ** 20):
|
|
self.total = int(total)
|
|
self.hasher = md5(usedforsecurity=False)
|
|
self.size = 0
|
|
self.chunk = b'test' * 16 * 2 ** 10
|
|
|
|
@property
|
|
def etag(self):
|
|
return self.hasher.hexdigest()
|
|
|
|
def __iter__(self):
|
|
return self
|
|
|
|
def __next__(self):
|
|
if self.size > self.total:
|
|
raise StopIteration()
|
|
self.size += len(self.chunk)
|
|
self.hasher.update(self.chunk)
|
|
return self.chunk
|
|
|
|
# for py2 compat
|
|
next = __next__
|
|
|
|
|
|
class TestReconstructorRebuild(ECProbeTest):
|
|
|
|
def setUp(self):
|
|
super(TestReconstructorRebuild, self).setUp()
|
|
# create EC container
|
|
headers = {'X-Storage-Policy': self.policy.name}
|
|
client.put_container(self.url, self.token, self.container_name,
|
|
headers=headers)
|
|
|
|
# PUT object and POST some metadata
|
|
self.proxy_put()
|
|
self.headers_post = {
|
|
self._make_name('x-object-meta-').decode('utf8'):
|
|
self._make_name('meta-bar-').decode('utf8')}
|
|
client.post_object(self.url, self.token, self.container_name,
|
|
self.object_name, headers=dict(self.headers_post))
|
|
|
|
self.opart, self.onodes = self.object_ring.get_nodes(
|
|
self.account, self.container_name, self.object_name)
|
|
|
|
# stash frag etags and metadata for later comparison
|
|
self.frag_headers, self.frag_etags = self._assert_all_nodes_have_frag()
|
|
for node_index, hdrs in self.frag_headers.items():
|
|
# sanity check
|
|
self.assertIn(
|
|
'X-Backend-Durable-Timestamp', hdrs,
|
|
'Missing durable timestamp in %r' % self.frag_headers)
|
|
|
|
def _format_node(self, node):
|
|
return '%s#%s' % (node['device'], node['index'])
|
|
|
|
def _assert_all_nodes_have_frag(self, extra_headers=None):
|
|
# check all frags are in place
|
|
failures = []
|
|
frag_etags = {}
|
|
frag_headers = {}
|
|
for node in self.onodes:
|
|
try:
|
|
headers, etag = self.direct_get(node, self.opart,
|
|
extra_headers=extra_headers)
|
|
frag_etags[node['index']] = etag
|
|
del headers['Date'] # Date header will vary so remove it
|
|
frag_headers[node['index']] = headers
|
|
except direct_client.DirectClientException as err:
|
|
failures.append((node, err))
|
|
if failures:
|
|
self.fail('\n'.join([' Node %r raised %r' %
|
|
(self._format_node(node), exc)
|
|
for (node, exc) in failures]))
|
|
return frag_headers, frag_etags
|
|
|
|
@contextmanager
|
|
def _annotate_failure_with_scenario(self, failed, non_durable):
|
|
try:
|
|
yield
|
|
except (AssertionError, ClientException) as err:
|
|
self.fail(
|
|
'Scenario with failed nodes: %r, non-durable nodes: %r\n'
|
|
' failed with:\n%s' %
|
|
([self._format_node(self.onodes[n]) for n in failed],
|
|
[self._format_node(self.onodes[n]) for n in non_durable], err)
|
|
)
|
|
|
|
def _test_rebuild_scenario(self, failed, non_durable,
|
|
reconstructor_cycles):
|
|
# helper method to test a scenario with some nodes missing their
|
|
# fragment and some nodes having non-durable fragments
|
|
with self._annotate_failure_with_scenario(failed, non_durable):
|
|
self.break_nodes(self.onodes, self.opart, failed, non_durable)
|
|
|
|
# make sure we can still GET the object and it is correct; the
|
|
# proxy is doing decode on remaining fragments to get the obj
|
|
with self._annotate_failure_with_scenario(failed, non_durable):
|
|
headers, etag = self.proxy_get()
|
|
self.assertEqual(self.etag, etag)
|
|
for key in self.headers_post:
|
|
self.assertIn(key, headers)
|
|
self.assertEqual(self.headers_post[key], headers[key])
|
|
|
|
# fire up reconstructor
|
|
for i in range(reconstructor_cycles):
|
|
self.reconstructor.once()
|
|
|
|
# check GET via proxy returns expected data and metadata
|
|
with self._annotate_failure_with_scenario(failed, non_durable):
|
|
headers, etag = self.proxy_get()
|
|
self.assertEqual(self.etag, etag)
|
|
for key in self.headers_post:
|
|
self.assertIn(key, headers)
|
|
self.assertEqual(self.headers_post[key], headers[key])
|
|
# check all frags are intact, durable and have expected metadata
|
|
with self._annotate_failure_with_scenario(failed, non_durable):
|
|
frag_headers, frag_etags = self._assert_all_nodes_have_frag()
|
|
self.assertEqual(self.frag_etags, frag_etags)
|
|
# self._frag_headers include X-Backend-Durable-Timestamp so this
|
|
# assertion confirms that the rebuilt frags are all durable
|
|
self.assertEqual(self.frag_headers, frag_headers)
|
|
|
|
def test_rebuild_missing_frags(self):
|
|
# build up a list of node lists to kill data from,
|
|
# first try a single node
|
|
# then adjacent nodes and then nodes >1 node apart
|
|
single_node = (random.randint(0, 5),)
|
|
adj_nodes = (0, 5)
|
|
far_nodes = (0, 4)
|
|
|
|
for failed_nodes in [single_node, adj_nodes, far_nodes]:
|
|
self._test_rebuild_scenario(failed_nodes, [], 1)
|
|
|
|
def test_rebuild_non_durable_frags(self):
|
|
# build up a list of node lists to make non-durable,
|
|
# first try a single node
|
|
# then adjacent nodes and then nodes >1 node apart
|
|
single_node = (random.randint(0, 5),)
|
|
adj_nodes = (0, 5)
|
|
far_nodes = (0, 4)
|
|
|
|
for non_durable_nodes in [single_node, adj_nodes, far_nodes]:
|
|
self._test_rebuild_scenario([], non_durable_nodes, 1)
|
|
|
|
def test_rebuild_with_missing_frags_and_non_durable_frags(self):
|
|
# pick some nodes with parts deleted, some with non-durable fragments
|
|
scenarios = [
|
|
# failed, non-durable
|
|
((0, 2), (4,)),
|
|
((0, 4), (2,)),
|
|
]
|
|
for failed, non_durable in scenarios:
|
|
self._test_rebuild_scenario(failed, non_durable, 3)
|
|
scenarios = [
|
|
# failed, non-durable
|
|
((0, 1), (2,)),
|
|
((0, 2), (1,)),
|
|
]
|
|
for failed, non_durable in scenarios:
|
|
# why 2 repeats? consider missing fragment on nodes 0, 1 and
|
|
# missing durable on node 2: first reconstructor cycle on node 3
|
|
# will make node 2 durable, first cycle on node 5 will rebuild on
|
|
# node 0; second cycle on node 0 or 2 will rebuild on node 1. Note
|
|
# that it is possible, that reconstructor processes on each node
|
|
# run in order such that all rebuild complete in once cycle, but
|
|
# that is not guaranteed, we allow 2 cycles to be sure.
|
|
self._test_rebuild_scenario(failed, non_durable, 2)
|
|
scenarios = [
|
|
# failed, non-durable
|
|
((0, 2), (1, 3, 5)),
|
|
((0,), (1, 2, 4, 5)),
|
|
]
|
|
for failed, non_durable in scenarios:
|
|
# why 3 repeats? consider missing fragment on node 0 and single
|
|
# durable on node 3: first reconstructor cycle on node 3 will make
|
|
# nodes 2 and 4 durable, second cycle on nodes 2 and 4 will make
|
|
# node 1 and 5 durable, third cycle on nodes 1 or 5 will
|
|
# reconstruct the missing fragment on node 0.
|
|
self._test_rebuild_scenario(failed, non_durable, 3)
|
|
|
|
def test_rebuild_partner_down(self):
|
|
# we have to pick a lower index because we have few handoffs
|
|
nodes = self.onodes[:2]
|
|
random.shuffle(nodes) # left or right is fine
|
|
primary_node, partner_node = nodes
|
|
|
|
# capture fragment etag from partner
|
|
failed_partner_meta, failed_partner_etag = self.direct_get(
|
|
partner_node, self.opart)
|
|
|
|
# and 507 the failed partner device
|
|
device_path = self.device_dir(partner_node)
|
|
self.kill_drive(device_path)
|
|
|
|
# reconstruct from the primary, while one of it's partners is 507'd
|
|
self.reconstructor.once(number=self.config_number(primary_node))
|
|
|
|
# a handoff will pickup the rebuild
|
|
hnodes = list(self.object_ring.get_more_nodes(self.opart))
|
|
for node in hnodes:
|
|
try:
|
|
found_meta, found_etag = self.direct_get(
|
|
node, self.opart)
|
|
except DirectClientException as e:
|
|
if e.http_status != 404:
|
|
raise
|
|
else:
|
|
break
|
|
else:
|
|
self.fail('Unable to fetch rebuilt frag from handoffs %r '
|
|
'given primary nodes %r with %s unmounted '
|
|
'trying to rebuild from %s' % (
|
|
[h['device'] for h in hnodes],
|
|
[n['device'] for n in self.onodes],
|
|
partner_node['device'],
|
|
primary_node['device'],
|
|
))
|
|
self.assertEqual(failed_partner_etag, found_etag)
|
|
del failed_partner_meta['Date']
|
|
del found_meta['Date']
|
|
self.assertEqual(failed_partner_meta, found_meta)
|
|
|
|
# just to be nice
|
|
self.revive_drive(device_path)
|
|
|
|
def test_sync_expired_object(self):
|
|
# verify that missing frag can be rebuilt for an expired object
|
|
delete_after = 2
|
|
self.proxy_put(extra_headers={'x-delete-after': delete_after})
|
|
self.proxy_get() # sanity check
|
|
orig_frag_headers, orig_frag_etags = self._assert_all_nodes_have_frag(
|
|
extra_headers={'X-Backend-Replication': 'True'})
|
|
|
|
# wait for object to expire
|
|
timeout = time.time() + delete_after + 1
|
|
while time.time() < timeout:
|
|
try:
|
|
self.proxy_get()
|
|
except ClientException as e:
|
|
if e.http_status == 404:
|
|
break
|
|
else:
|
|
raise
|
|
else:
|
|
self.fail('Timed out waiting for %s/%s to expire after %ss' % (
|
|
self.container_name, self.object_name, delete_after))
|
|
|
|
# sanity check - X-Backend-Replication let's us get expired frag...
|
|
fail_node = random.choice(self.onodes)
|
|
self.assert_direct_get_succeeds(
|
|
fail_node, self.opart,
|
|
extra_headers={'X-Backend-Replication': 'True'})
|
|
# ...until we remove the frag from fail_node
|
|
self.break_nodes(
|
|
self.onodes, self.opart, [self.onodes.index(fail_node)], [])
|
|
# ...now it's really gone
|
|
with self.assertRaises(DirectClientException) as cm:
|
|
self.direct_get(fail_node, self.opart,
|
|
extra_headers={'X-Backend-Replication': 'True'})
|
|
self.assertEqual(404, cm.exception.http_status)
|
|
self.assertNotIn('X-Backend-Timestamp', cm.exception.http_headers)
|
|
|
|
# run the reconstructor
|
|
self.reconstructor.once()
|
|
|
|
# the missing frag is now in place but expired
|
|
with self.assertRaises(DirectClientException) as cm:
|
|
self.direct_get(fail_node, self.opart)
|
|
self.assertEqual(404, cm.exception.http_status)
|
|
self.assertIn('X-Backend-Timestamp', cm.exception.http_headers)
|
|
|
|
# check all frags are intact, durable and have expected metadata
|
|
frag_headers, frag_etags = self._assert_all_nodes_have_frag(
|
|
extra_headers={'X-Backend-Replication': 'True'})
|
|
self.assertEqual(orig_frag_etags, frag_etags)
|
|
self.maxDiff = None
|
|
self.assertEqual(orig_frag_headers, frag_headers)
|
|
|
|
def test_sync_unexpired_object_metadata(self):
|
|
# verify that metadata can be sync'd to a frag that has missed a POST
|
|
# and consequently that frag appears to be expired, when in fact the
|
|
# POST removed the x-delete-at header
|
|
client.put_container(self.url, self.token, self.container_name,
|
|
headers={'x-storage-policy': self.policy.name})
|
|
opart, onodes = self.object_ring.get_nodes(
|
|
self.account, self.container_name, self.object_name)
|
|
delete_at = int(time.time() + 3)
|
|
contents = ('body-%s' % uuid.uuid4()).encode()
|
|
headers = {'x-delete-at': delete_at}
|
|
client.put_object(self.url, self.token, self.container_name,
|
|
self.object_name, headers=headers, contents=contents)
|
|
# fail a primary
|
|
post_fail_node = random.choice(onodes)
|
|
post_fail_path = self.device_dir(post_fail_node)
|
|
self.kill_drive(post_fail_path)
|
|
# post over w/o x-delete-at
|
|
client.post_object(self.url, self.token, self.container_name,
|
|
self.object_name, {'content-type': 'something-new'})
|
|
# revive failed primary
|
|
self.revive_drive(post_fail_path)
|
|
# wait for the delete_at to pass, and check that it thinks the object
|
|
# is expired
|
|
timeout = time.time() + 5
|
|
err = None
|
|
while time.time() < timeout:
|
|
try:
|
|
direct_client.direct_head_object(
|
|
post_fail_node, opart, self.account, self.container_name,
|
|
self.object_name, headers={
|
|
'X-Backend-Storage-Policy-Index': int(self.policy)})
|
|
except direct_client.ClientException as client_err:
|
|
if client_err.http_status != 404:
|
|
raise
|
|
err = client_err
|
|
break
|
|
else:
|
|
time.sleep(0.1)
|
|
else:
|
|
self.fail('Failed to get a 404 from node with expired object')
|
|
self.assertEqual(err.http_status, 404)
|
|
self.assertIn('X-Backend-Timestamp', err.http_headers)
|
|
|
|
# but from the proxy we've got the whole story
|
|
headers, body = client.get_object(self.url, self.token,
|
|
self.container_name,
|
|
self.object_name)
|
|
self.assertNotIn('X-Delete-At', headers)
|
|
self.reconstructor.once()
|
|
|
|
# ... and all the nodes have the final unexpired state
|
|
for node in onodes:
|
|
headers = direct_client.direct_head_object(
|
|
node, opart, self.account, self.container_name,
|
|
self.object_name, headers={
|
|
'X-Backend-Storage-Policy-Index': int(self.policy)})
|
|
self.assertNotIn('X-Delete-At', headers)
|
|
|
|
def test_rebuild_quarantines_lonely_frag(self):
|
|
# fail one device while the object is deleted so we are left with one
|
|
# fragment and some tombstones
|
|
failed_node = self.onodes[0]
|
|
device_path = self.device_dir(failed_node)
|
|
self.kill_drive(device_path)
|
|
self.assert_direct_get_fails(failed_node, self.opart, 507) # sanity
|
|
|
|
# delete object
|
|
client.delete_object(self.url, self.token, self.container_name,
|
|
self.object_name)
|
|
|
|
# check we have tombstones
|
|
for node in self.onodes[1:]:
|
|
err = self.assert_direct_get_fails(node, self.opart, 404)
|
|
self.assertIn('X-Backend-Timestamp', err.http_headers)
|
|
|
|
# run the reconstructor with zero reclaim age to clean up tombstones
|
|
for conf_index in self.configs['object-reconstructor'].keys():
|
|
self.run_custom_daemon(
|
|
ObjectReconstructor, 'object-reconstructor', conf_index,
|
|
{'reclaim_age': '0'})
|
|
|
|
# check we no longer have tombstones
|
|
for node in self.onodes[1:]:
|
|
err = self.assert_direct_get_fails(node, self.opart, 404)
|
|
self.assertNotIn('X-Timestamp', err.http_headers)
|
|
|
|
# revive the failed device and check it has a fragment
|
|
self.revive_drive(device_path)
|
|
self.assert_direct_get_succeeds(failed_node, self.opart)
|
|
|
|
# restart proxy to clear error-limiting so that the revived drive
|
|
# participates again
|
|
Manager(['proxy-server']).restart()
|
|
|
|
# client GET will fail with 503 ...
|
|
with self.assertRaises(ClientException) as cm:
|
|
client.get_object(self.url, self.token, self.container_name,
|
|
self.object_name)
|
|
self.assertEqual(503, cm.exception.http_status)
|
|
# ... but client GET succeeds
|
|
headers = client.head_object(self.url, self.token, self.container_name,
|
|
self.object_name)
|
|
for key in self.headers_post:
|
|
self.assertIn(key, headers)
|
|
self.assertEqual(self.headers_post[key], headers[key])
|
|
|
|
# run the reconstructor without quarantine_threshold set
|
|
error_lines = []
|
|
warning_lines = []
|
|
for conf_index in self.configs['object-reconstructor'].keys():
|
|
reconstructor = self.run_custom_daemon(
|
|
ObjectReconstructor, 'object-reconstructor', conf_index,
|
|
{'quarantine_age': '0'})
|
|
logger = reconstructor.logger.logger
|
|
error_lines.append(logger.get_lines_for_level('error'))
|
|
warning_lines.append(logger.get_lines_for_level('warning'))
|
|
|
|
# check logs for errors
|
|
found_lines = False
|
|
for lines in error_lines:
|
|
if not lines:
|
|
continue
|
|
self.assertFalse(found_lines, error_lines)
|
|
found_lines = True
|
|
for line in itertools.islice(lines, 0, 6, 2):
|
|
self.assertIn(
|
|
'Unable to get enough responses (1/4 from 1 ok '
|
|
'responses)', line, lines)
|
|
for line in itertools.islice(lines, 1, 7, 2):
|
|
self.assertIn(
|
|
'Unable to get enough responses (4 x 404 error '
|
|
'responses)', line, lines)
|
|
self.assertTrue(found_lines, 'error lines not found')
|
|
|
|
for lines in warning_lines:
|
|
self.assertEqual([], lines)
|
|
|
|
# check we have still have a single fragment and no tombstones
|
|
self.assert_direct_get_succeeds(failed_node, self.opart)
|
|
for node in self.onodes[1:]:
|
|
err = self.assert_direct_get_fails(node, self.opart, 404)
|
|
self.assertNotIn('X-Timestamp', err.http_headers)
|
|
|
|
# run the reconstructor to quarantine the lonely frag
|
|
error_lines = []
|
|
warning_lines = []
|
|
for conf_index in self.configs['object-reconstructor'].keys():
|
|
reconstructor = self.run_custom_daemon(
|
|
ObjectReconstructor, 'object-reconstructor', conf_index,
|
|
{'quarantine_age': '0', 'quarantine_threshold': '1'})
|
|
logger = reconstructor.logger.logger
|
|
error_lines.append(logger.get_lines_for_level('error'))
|
|
warning_lines.append(logger.get_lines_for_level('warning'))
|
|
|
|
# check logs for errors
|
|
found_lines = False
|
|
for index, lines in enumerate(error_lines):
|
|
if not lines:
|
|
continue
|
|
self.assertFalse(found_lines, error_lines)
|
|
found_lines = True
|
|
for line in itertools.islice(lines, 0, 6, 2):
|
|
self.assertIn(
|
|
'Unable to get enough responses (1/4 from 1 ok '
|
|
'responses)', line, lines)
|
|
for line in itertools.islice(lines, 1, 7, 2):
|
|
self.assertIn(
|
|
'Unable to get enough responses (6 x 404 error '
|
|
'responses)', line, lines)
|
|
self.assertTrue(found_lines, 'error lines not found')
|
|
|
|
# check logs for quarantine warning
|
|
found_lines = False
|
|
for lines in warning_lines:
|
|
if not lines:
|
|
continue
|
|
self.assertFalse(found_lines, warning_lines)
|
|
found_lines = True
|
|
self.assertEqual(1, len(lines), lines)
|
|
self.assertIn('Quarantined object', lines[0])
|
|
self.assertTrue(found_lines, 'warning lines not found')
|
|
|
|
# check we have nothing
|
|
for node in self.onodes:
|
|
err = self.assert_direct_get_fails(node, self.opart, 404)
|
|
self.assertNotIn('X-Backend-Timestamp', err.http_headers)
|
|
# client HEAD and GET now both 404
|
|
with self.assertRaises(ClientException) as cm:
|
|
client.get_object(self.url, self.token, self.container_name,
|
|
self.object_name)
|
|
self.assertEqual(404, cm.exception.http_status)
|
|
with self.assertRaises(ClientException) as cm:
|
|
client.head_object(self.url, self.token, self.container_name,
|
|
self.object_name)
|
|
self.assertEqual(404, cm.exception.http_status)
|
|
|
|
# run the reconstructor once more - should see no errors in logs!
|
|
error_lines = []
|
|
warning_lines = []
|
|
for conf_index in self.configs['object-reconstructor'].keys():
|
|
reconstructor = self.run_custom_daemon(
|
|
ObjectReconstructor, 'object-reconstructor', conf_index,
|
|
{'quarantine_age': '0', 'quarantine_threshold': '1'})
|
|
logger = reconstructor.logger.logger
|
|
error_lines.append(logger.get_lines_for_level('error'))
|
|
warning_lines.append(logger.get_lines_for_level('warning'))
|
|
|
|
for lines in error_lines:
|
|
self.assertEqual([], lines)
|
|
for lines in warning_lines:
|
|
self.assertEqual([], lines)
|
|
|
|
|
|
if six.PY2:
|
|
# The non-ASCII chars in metadata cause test hangs in
|
|
# _assert_all_nodes_have_frag because of https://bugs.python.org/issue37093
|
|
|
|
class TestReconstructorRebuildUTF8(TestReconstructorRebuild):
|
|
|
|
def _make_name(self, prefix):
|
|
return b'%s\xc3\xa8-%s' % (
|
|
prefix.encode(), str(uuid.uuid4()).encode())
|
|
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|