swift/test/probe/test_reconstructor_revert.py
Pete Zaitcev 85d0211279 Get rid of port to node assumptions and their modulo kludges
We had get_server_number for many years now, there's no reason
to continue using the node_id=port%100//10 thing.

Change-Id: I5357a095110e8e4889c0468c154611209c6e8c07
2021-09-30 00:42:24 -05:00

457 lines
19 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
import unittest
import random
import shutil
from collections import defaultdict
from swift.obj.reconstructor import ObjectReconstructor
from test.probe.common import ECProbeTest, Body
from swift.common import direct_client
from swift.obj import reconstructor
from swiftclient import client
class TestReconstructorRevert(ECProbeTest):
def test_revert_object(self):
# create EC container
headers = {'X-Storage-Policy': self.policy.name}
client.put_container(self.url, self.token, self.container_name,
headers=headers)
# get our node lists
opart, onodes = self.object_ring.get_nodes(
self.account, self.container_name, self.object_name)
hnodes = self.object_ring.get_more_nodes(opart)
# kill 2 a parity count number of primary nodes so we can
# force data onto handoffs, we do that by renaming dev dirs
# to induce 507
p_dev1 = self.device_dir(onodes[0])
p_dev2 = self.device_dir(onodes[1])
self.kill_drive(p_dev1)
self.kill_drive(p_dev2)
# PUT object
contents = Body()
headers = {'x-object-meta-foo': 'meta-foo'}
headers_post = {'x-object-meta-bar': 'meta-bar'}
client.put_object(self.url, self.token, self.container_name,
self.object_name, contents=contents,
headers=headers)
client.post_object(self.url, self.token, self.container_name,
self.object_name, headers=headers_post)
# (Some versions of?) swiftclient will mutate the headers dict on post
headers_post.pop('X-Auth-Token', None)
# these primaries can't serve the data any more, we expect 507
# here and not 404 because we're using mount_check to kill nodes
for onode in (onodes[0], onodes[1]):
self.assert_direct_get_fails(onode, opart, 507)
# now take out another primary
p_dev3 = self.device_dir(onodes[2])
self.kill_drive(p_dev3)
# this node can't serve the data any more
self.assert_direct_get_fails(onodes[2], opart, 507)
# make sure we can still GET the object and its correct
# we're now pulling from handoffs and reconstructing
_headers, etag = self.proxy_get()
self.assertEqual(etag, contents.etag)
# rename the dev dirs so they don't 507 anymore
self.revive_drive(p_dev1)
self.revive_drive(p_dev2)
self.revive_drive(p_dev3)
# fire up reconstructor on handoff nodes only
for hnode in hnodes:
hnode_id = self.config_number(hnode)
self.reconstructor.once(number=hnode_id)
# first three primaries have data again
for onode in (onodes[0], onodes[2]):
self.assert_direct_get_succeeds(onode, opart)
# check meta
meta = client.head_object(self.url, self.token,
self.container_name,
self.object_name)
for key in headers_post:
self.assertIn(key, meta)
self.assertEqual(meta[key], headers_post[key])
# handoffs are empty
for hnode in hnodes:
self.assert_direct_get_fails(hnode, opart, 404)
def test_delete_propagate(self):
# create EC container
headers = {'X-Storage-Policy': self.policy.name}
client.put_container(self.url, self.token, self.container_name,
headers=headers)
# get our node lists
opart, onodes = self.object_ring.get_nodes(
self.account, self.container_name, self.object_name)
hnodes = list(itertools.islice(
self.object_ring.get_more_nodes(opart), 2))
# PUT object
contents = Body()
client.put_object(self.url, self.token, self.container_name,
self.object_name, contents=contents)
# now lets shut down a couple of primaries
failed_nodes = random.sample(onodes, 2)
for node in failed_nodes:
self.kill_drive(self.device_dir(node))
# Write tombstones over the nodes that are still online
client.delete_object(self.url, self.token,
self.container_name,
self.object_name)
# spot check the primary nodes that are still online
delete_timestamp = None
for node in onodes:
if node in failed_nodes:
continue
try:
self.direct_get(node, opart)
except direct_client.DirectClientException as err:
self.assertEqual(err.http_status, 404)
delete_timestamp = err.http_headers['X-Backend-Timestamp']
else:
self.fail('Node data on %r was not fully destroyed!' %
(node,))
# run the reconstructor on the handoff node multiple times until
# tombstone is pushed out - each handoff node syncs to a few
# primaries each time
iterations = 0
while iterations < 52:
self.reconstructor.once(number=self.config_number(hnodes[0]))
iterations += 1
# see if the tombstone is reverted
try:
self.direct_get(hnodes[0], opart)
except direct_client.DirectClientException as err:
self.assertEqual(err.http_status, 404)
if 'X-Backend-Timestamp' not in err.http_headers:
# this means the tombstone is *gone* so it's reverted
break
else:
self.fail('Still found tombstone on %r after %s iterations' % (
hnodes[0], iterations))
# tombstone is still on the *second* handoff
try:
self.direct_get(hnodes[1], opart)
except direct_client.DirectClientException as err:
self.assertEqual(err.http_status, 404)
self.assertEqual(err.http_headers['X-Backend-Timestamp'],
delete_timestamp)
else:
self.fail('Found obj data on %r' % hnodes[1])
# repair the primaries
self.revive_drive(self.device_dir(failed_nodes[0]))
self.revive_drive(self.device_dir(failed_nodes[1]))
# run reconstructor on second handoff
self.reconstructor.once(number=self.config_number(hnodes[1]))
# verify tombstone is reverted on the first pass
try:
self.direct_get(hnodes[1], opart)
except direct_client.DirectClientException as err:
self.assertEqual(err.http_status, 404)
self.assertNotIn('X-Backend-Timestamp', err.http_headers)
else:
self.fail('Found obj data on %r' % hnodes[1])
# sanity make sure proxy get can't find it
try:
self.proxy_get()
except Exception as err:
self.assertEqual(err.http_status, 404)
else:
self.fail('Node data on %r was not fully destroyed!' %
(onodes[0]))
def test_reconstruct_from_reverted_fragment_archive(self):
headers = {'X-Storage-Policy': self.policy.name}
client.put_container(self.url, self.token, self.container_name,
headers=headers)
# get our node lists
opart, onodes = self.object_ring.get_nodes(
self.account, self.container_name, self.object_name)
# find a primary server that only has one of it's devices in the
# primary node list
group_nodes_by_config = defaultdict(list)
for n in onodes:
group_nodes_by_config[self.config_number(n)].append(n)
for config_number, node_list in group_nodes_by_config.items():
if len(node_list) == 1:
break
else:
self.fail('ring balancing did not use all available nodes')
primary_node = node_list[0]
# ... and 507 it's device
primary_device = self.device_dir(primary_node)
self.kill_drive(primary_device)
# PUT object
contents = Body()
etag = client.put_object(self.url, self.token, self.container_name,
self.object_name, contents=contents)
self.assertEqual(contents.etag, etag)
# fix the primary device and sanity GET
self.revive_drive(primary_device)
_headers, actual_etag = self.proxy_get()
self.assertEqual(etag, actual_etag)
# find a handoff holding the fragment
for hnode in self.object_ring.get_more_nodes(opart):
try:
_hdrs, reverted_fragment_etag = self.direct_get(hnode, opart)
except direct_client.DirectClientException as err:
if err.http_status != 404:
raise
else:
break
else:
self.fail('Unable to find handoff fragment!')
# we'll force the handoff device to revert instead of potentially
# racing with rebuild by deleting any other fragments that may be on
# the same server
handoff_fragment_etag = None
for node in onodes:
if self.is_local_to(node, hnode):
# we'll keep track of the etag of this fragment we're removing
# in case we need it later (queue forshadowing music)...
try:
_hdrs, handoff_fragment_etag = self.direct_get(node, opart)
except direct_client.DirectClientException as err:
if err.http_status != 404:
raise
# this just means our handoff device was on the same
# machine as the primary!
continue
# use the primary nodes device - not the hnode device
part_dir = self.storage_dir(node, part=opart)
shutil.rmtree(part_dir, True)
# revert from handoff device with reconstructor
self.reconstructor.once(number=self.config_number(hnode))
# verify fragment reverted to primary server
self.assertEqual(reverted_fragment_etag,
self.direct_get(primary_node, opart)[1])
# now we'll remove some data on one of the primary node's partners
partner = random.choice(reconstructor._get_partners(
primary_node['index'], onodes))
try:
_hdrs, rebuilt_fragment_etag = self.direct_get(partner, opart)
except direct_client.DirectClientException as err:
if err.http_status != 404:
raise
# partner already had it's fragment removed
if (handoff_fragment_etag is not None and
self.is_local_to(hnode, partner)):
# oh, well that makes sense then...
rebuilt_fragment_etag = handoff_fragment_etag
else:
# I wonder what happened?
self.fail('Partner inexplicably missing fragment!')
part_dir = self.storage_dir(partner, part=opart)
shutil.rmtree(part_dir, True)
# sanity, it's gone
try:
self.direct_get(partner, opart)
except direct_client.DirectClientException as err:
if err.http_status != 404:
raise
else:
self.fail('successful GET of removed partner fragment archive!?')
# and force the primary node to do a rebuild
self.reconstructor.once(number=self.config_number(primary_node))
# and validate the partners rebuilt_fragment_etag
try:
self.assertEqual(rebuilt_fragment_etag,
self.direct_get(partner, opart)[1])
except direct_client.DirectClientException as err:
if err.http_status != 404:
raise
else:
self.fail('Did not find rebuilt fragment on partner node')
def test_handoff_non_durable(self):
# verify that reconstructor reverts non-durable frags from handoff to
# primary (and also durable frag of same object on same handoff) and
# cleans up non-durable data files on handoffs after revert
headers = {'X-Storage-Policy': self.policy.name}
client.put_container(self.url, self.token, self.container_name,
headers=headers)
# get our node lists
opart, onodes = self.object_ring.get_nodes(
self.account, self.container_name, self.object_name)
pdevs = [self.device_dir(onode) for onode in onodes]
hnodes = list(itertools.islice(
self.object_ring.get_more_nodes(opart), 2))
# kill a primary nodes so we can force data onto a handoff
self.kill_drive(pdevs[0])
# PUT object at t1
contents = Body(total=3.5 * 2 ** 20)
headers = {'x-object-meta-foo': 'meta-foo'}
headers_post = {'x-object-meta-bar': 'meta-bar'}
client.put_object(self.url, self.token, self.container_name,
self.object_name, contents=contents,
headers=headers)
client.post_object(self.url, self.token, self.container_name,
self.object_name, headers=headers_post)
# (Some versions of?) swiftclient will mutate the headers dict on post
headers_post.pop('X-Auth-Token', None)
# this primary can't serve the data; we expect 507 here and not 404
# because we're using mount_check to kill nodes
self.assert_direct_get_fails(onodes[0], opart, 507)
# these primaries and first handoff do have the data
for onode in (onodes[1:]):
self.assert_direct_get_succeeds(onode, opart)
_hdrs, older_frag_etag = self.assert_direct_get_succeeds(hnodes[0],
opart)
self.assert_direct_get_fails(hnodes[1], opart, 404)
# make sure we can GET the object; there's 5 primaries and 1 handoff
headers, older_obj_etag = self.proxy_get()
self.assertEqual(contents.etag, older_obj_etag)
self.assertEqual('meta-bar', headers.get('x-object-meta-bar'))
# PUT object at t2; make all frags non-durable so that the previous
# durable frags at t1 remain on object server; use InternalClient so
# that x-backend-no-commit is passed through
internal_client = self.make_internal_client()
contents2 = Body(total=2.5 * 2 ** 20) # different content
self.assertNotEqual(contents2.etag, older_obj_etag) # sanity check
headers = {'x-backend-no-commit': 'True',
'x-object-meta-bar': 'meta-bar-new'}
internal_client.upload_object(contents2, self.account,
self.container_name.decode('utf8'),
self.object_name.decode('utf8'),
headers)
# GET should still return the older durable object
headers, obj_etag = self.proxy_get()
self.assertEqual(older_obj_etag, obj_etag)
self.assertEqual('meta-bar', headers.get('x-object-meta-bar'))
# on handoff we have older durable and newer non-durable
_hdrs, frag_etag = self.assert_direct_get_succeeds(hnodes[0], opart)
self.assertEqual(older_frag_etag, frag_etag)
_hdrs, newer_frag_etag = self.assert_direct_get_succeeds(
hnodes[0], opart, require_durable=False)
self.assertNotEqual(older_frag_etag, newer_frag_etag)
# now make all the newer frags durable only on the 5 primaries
self.assertEqual(5, self.make_durable(onodes[1:], opart))
# now GET will return the newer object
headers, newer_obj_etag = self.proxy_get()
self.assertEqual(contents2.etag, newer_obj_etag)
self.assertNotEqual(older_obj_etag, newer_obj_etag)
self.assertEqual('meta-bar-new', headers.get('x-object-meta-bar'))
# fix the 507'ing primary
self.revive_drive(pdevs[0])
# fire up reconstructor on handoff node only; commit_window is
# set to zero to ensure the nondurable handoff frag is purged
hnode_id = self.config_number(hnodes[0])
self.run_custom_daemon(
ObjectReconstructor, 'object-reconstructor', hnode_id,
{'commit_window': '0'})
# primary now has only the newer non-durable frag
self.assert_direct_get_fails(onodes[0], opart, 404)
_hdrs, frag_etag = self.assert_direct_get_succeeds(
onodes[0], opart, require_durable=False)
self.assertEqual(newer_frag_etag, frag_etag)
# handoff has only the older durable
_hdrs, frag_etag = self.assert_direct_get_succeeds(hnodes[0], opart)
self.assertEqual(older_frag_etag, frag_etag)
headers, frag_etag = self.assert_direct_get_succeeds(
hnodes[0], opart, require_durable=False)
self.assertEqual(older_frag_etag, frag_etag)
self.assertEqual('meta-bar', headers.get('x-object-meta-bar'))
# fire up reconstructor on handoff node only, again
self.reconstructor.once(number=hnode_id)
# primary now has the newer non-durable frag and the older durable frag
headers, frag_etag = self.assert_direct_get_succeeds(onodes[0], opart)
self.assertEqual(older_frag_etag, frag_etag)
self.assertEqual('meta-bar', headers.get('x-object-meta-bar'))
headers, frag_etag = self.assert_direct_get_succeeds(
onodes[0], opart, require_durable=False)
self.assertEqual(newer_frag_etag, frag_etag)
self.assertEqual('meta-bar-new', headers.get('x-object-meta-bar'))
# handoff has nothing
self.assert_direct_get_fails(hnodes[0], opart, 404,
require_durable=False)
# kill all but first two primaries
for pdev in pdevs[2:]:
self.kill_drive(pdev)
# fire up reconstructor on the remaining primary[1]; without the
# other primaries, primary[1] cannot rebuild the frag but it can let
# primary[0] know that its non-durable frag can be made durable
self.reconstructor.once(number=self.config_number(onodes[1]))
# first primary now has a *durable* *newer* frag - it *was* useful to
# sync the non-durable!
headers, frag_etag = self.assert_direct_get_succeeds(onodes[0], opart)
self.assertEqual(newer_frag_etag, frag_etag)
self.assertEqual('meta-bar-new', headers.get('x-object-meta-bar'))
# revive primaries (in case we want to debug)
for pdev in pdevs[2:]:
self.revive_drive(pdev)
if __name__ == "__main__":
unittest.main()