647b66a2ce
This patch adds the erasure code reconstructor. It follows the
design of the replicator but:
- There is no notion of update() or update_deleted().
- There is a single job processor
- Jobs are processed partition by partition.
- At the end of processing a rebalanced or handoff partition, the
reconstructor will remove successfully reverted objects if any.
And various ssync changes such as the addition of reconstruct_fa()
function called from ssync_sender which performs the actual
reconstruction while sending the object to the receiver
Co-Authored-By: Alistair Coles <alistair.coles@hp.com>
Co-Authored-By: Thiago da Silva <thiago@redhat.com>
Co-Authored-By: John Dickinson <me@not.mn>
Co-Authored-By: Clay Gerrard <clay.gerrard@gmail.com>
Co-Authored-By: Tushar Gohad <tushar.gohad@intel.com>
Co-Authored-By: Samuel Merritt <sam@swiftstack.com>
Co-Authored-By: Christian Schwede <christian.schwede@enovance.com>
Co-Authored-By: Yuan Zhou <yuan.zhou@intel.com>
blueprint ec-reconstructor
Change-Id: I7d15620dc66ee646b223bb9fff700796cd6bef51
176 lines
7.3 KiB
Python
Executable File
176 lines
7.3 KiB
Python
Executable File
#!/usr/bin/python -u
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# Copyright (c) 2010-2012 OpenStack Foundation
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import os
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import shutil
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import time
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from unittest import main
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from uuid import uuid4
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from swiftclient import client
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from swift.common import direct_client
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from swift.obj.diskfile import get_data_dir
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from swift.common.exceptions import ClientException
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from test.probe.common import kill_server, ReplProbeTest, start_server
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from swift.common.utils import readconf
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from swift.common.manager import Manager
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class TestEmptyDevice(ReplProbeTest):
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def _get_objects_dir(self, onode):
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device = onode['device']
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node_id = (onode['port'] - 6000) / 10
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obj_server_conf = readconf(self.configs['object-server'][node_id])
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devices = obj_server_conf['app:object-server']['devices']
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obj_dir = '%s/%s' % (devices, device)
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return obj_dir
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def test_main(self):
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# Create container
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container = 'container-%s' % uuid4()
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client.put_container(self.url, self.token, container,
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headers={'X-Storage-Policy':
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self.policy.name})
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cpart, cnodes = self.container_ring.get_nodes(self.account, container)
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cnode = cnodes[0]
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obj = 'object-%s' % uuid4()
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opart, onodes = self.object_ring.get_nodes(
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self.account, container, obj)
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onode = onodes[0]
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# Kill one container/obj primary server
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kill_server(onode['port'], self.port2server, self.pids)
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# Delete the default data directory for objects on the primary server
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obj_dir = '%s/%s' % (self._get_objects_dir(onode),
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get_data_dir(self.policy))
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shutil.rmtree(obj_dir, True)
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self.assertFalse(os.path.exists(obj_dir))
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# Create container/obj (goes to two primary servers and one handoff)
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client.put_object(self.url, self.token, container, obj, 'VERIFY')
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odata = client.get_object(self.url, self.token, container, obj)[-1]
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if odata != 'VERIFY':
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raise Exception('Object GET did not return VERIFY, instead it '
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'returned: %s' % repr(odata))
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# Kill other two container/obj primary servers
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# to ensure GET handoff works
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for node in onodes[1:]:
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kill_server(node['port'], self.port2server, self.pids)
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# Indirectly through proxy assert we can get container/obj
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odata = client.get_object(self.url, self.token, container, obj)[-1]
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if odata != 'VERIFY':
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raise Exception('Object GET did not return VERIFY, instead it '
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'returned: %s' % repr(odata))
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# Restart those other two container/obj primary servers
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for node in onodes[1:]:
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start_server(node['port'], self.port2server, self.pids)
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self.assertFalse(os.path.exists(obj_dir))
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# We've indirectly verified the handoff node has the object, but
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# let's directly verify it.
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# Directly to handoff server assert we can get container/obj
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another_onode = self.object_ring.get_more_nodes(opart).next()
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odata = direct_client.direct_get_object(
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another_onode, opart, self.account, container, obj,
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headers={'X-Backend-Storage-Policy-Index': self.policy.idx})[-1]
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if odata != 'VERIFY':
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raise Exception('Direct object GET did not return VERIFY, instead '
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'it returned: %s' % repr(odata))
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# Assert container listing (via proxy and directly) has container/obj
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objs = [o['name'] for o in
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client.get_container(self.url, self.token, container)[1]]
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if obj not in objs:
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raise Exception('Container listing did not know about object')
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timeout = time.time() + 5
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found_objs_on_cnode = []
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while time.time() < timeout:
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for cnode in [c for c in cnodes if cnodes not in
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found_objs_on_cnode]:
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objs = [o['name'] for o in
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direct_client.direct_get_container(
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cnode, cpart, self.account, container)[1]]
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if obj in objs:
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found_objs_on_cnode.append(cnode)
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if len(found_objs_on_cnode) >= len(cnodes):
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break
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time.sleep(0.3)
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if len(found_objs_on_cnode) < len(cnodes):
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missing = ['%s:%s' % (cnode['ip'], cnode['port']) for cnode in
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cnodes if cnode not in found_objs_on_cnode]
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raise Exception('Container servers %r did not know about object' %
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missing)
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# Bring the first container/obj primary server back up
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start_server(onode['port'], self.port2server, self.pids)
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# Assert that it doesn't have container/obj yet
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self.assertFalse(os.path.exists(obj_dir))
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try:
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direct_client.direct_get_object(
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onode, opart, self.account, container, obj, headers={
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'X-Backend-Storage-Policy-Index': self.policy.idx})
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except ClientException as err:
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self.assertEquals(err.http_status, 404)
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self.assertFalse(os.path.exists(obj_dir))
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else:
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self.fail("Expected ClientException but didn't get it")
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try:
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port_num = onode['replication_port']
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except KeyError:
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port_num = onode['port']
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try:
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another_port_num = another_onode['replication_port']
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except KeyError:
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another_port_num = another_onode['port']
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# Run object replication for first container/obj primary server
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num = (port_num - 6000) / 10
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Manager(['object-replicator']).once(number=num)
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# Run object replication for handoff node
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another_num = (another_port_num - 6000) / 10
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Manager(['object-replicator']).once(number=another_num)
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# Assert the first container/obj primary server now has container/obj
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odata = direct_client.direct_get_object(
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onode, opart, self.account, container, obj, headers={
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'X-Backend-Storage-Policy-Index': self.policy.idx})[-1]
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if odata != 'VERIFY':
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raise Exception('Direct object GET did not return VERIFY, instead '
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'it returned: %s' % repr(odata))
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# Assert the handoff server no longer has container/obj
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try:
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direct_client.direct_get_object(
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another_onode, opart, self.account, container, obj, headers={
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'X-Backend-Storage-Policy-Index': self.policy.idx})
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except ClientException as err:
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self.assertEquals(err.http_status, 404)
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else:
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self.fail("Expected ClientException but didn't get it")
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if __name__ == '__main__':
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main()
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