d17cc23c64
Due to the fact that certain volume back-ends cannot easily report simple total_capacity_gb/free_capacity_gb for their internal implementation complexity, scheduler is updated to let those back-ends who report unclear capacity pass capacity filter, thus there is chance create_volume() request would fail. In a more general case, when a volume back-end failed to serve create_volume request for whatever reason it'd be good that we have a mechanism to 'retry' the request. So the idea is when volume manager catches the exception from driver.create_volume() call, it checks if the request is allowed to be rescheduled (requests that are not: clone volume and create volume from snapshot while 'snapshot_same_host' option is true), it composes a new request back to scheduler with additional information to mark this specific back-end has been tried (so that scheduler may choose to skip this back-end if needed). Scheduler is (filter scheduler only, simple and chance scheduler is not supported) is updated as well so that it only retry scheduler_max_attempts times. In order to skip/rule out previously tried back-ends in next schedule task, a new RetryFilter is added. Changes: 1) volume RPC API create_volume() is updated with new parameters to save original request information in case rescheduling is needed. This bumps volume RPC API to 1.4. 2) implementation of create_volume() method in volume API is refactored in order to distinguish if a request is allowed to do reschedule (i.e. currently create volume from source volume bypasses scheduler, not rescheduling is allowed). 3) add reschedule functionality in create_volume() of volume manager so that it's able to send the request back to scheduler. 4) add schedule_max_attempts config option in scheduler/driver.py 5) add RetryFitler 6) change scheduler_driver default option to FilterScheduler Change-Id: Ia46b5eb4dc033d73734b6aea82ada34ba5731075
81 lines
2.8 KiB
Python
81 lines
2.8 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
|
|
|
|
# Copyright 2010 United States Government as represented by the
|
|
# Administrator of the National Aeronautics and Space Administration.
|
|
# All Rights Reserved.
|
|
#
|
|
# 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 setuptools
|
|
|
|
from cinder.openstack.common import setup as common_setup
|
|
|
|
requires = common_setup.parse_requirements()
|
|
project = 'cinder'
|
|
|
|
filters = [
|
|
"AvailabilityZoneFilter = "
|
|
"cinder.openstack.common.scheduler.filters."
|
|
"availability_zone_filter:AvailabilityZoneFilter",
|
|
"CapabilitiesFilter = "
|
|
"cinder.openstack.common.scheduler.filters."
|
|
"capabilities_filter:CapabilitiesFilter",
|
|
"CapacityFilter = "
|
|
"cinder.scheduler.filters.capacity_filter:CapacityFilter",
|
|
"JsonFilter = "
|
|
"cinder.openstack.common.scheduler.filters.json_filter:JsonFilter",
|
|
"RetryFilter = "
|
|
"cinder.scheduler.filters.retry_filter:RetryFilter",
|
|
]
|
|
|
|
weights = [
|
|
"CapacityWeigher = cinder.scheduler.weights.capacity:CapacityWeigher",
|
|
]
|
|
|
|
setuptools.setup(
|
|
name=project,
|
|
version=common_setup.get_version(project, '2013.1'),
|
|
description='block storage service',
|
|
author='OpenStack',
|
|
author_email='cinder@lists.launchpad.net',
|
|
url='http://www.openstack.org/',
|
|
classifiers=[
|
|
'Environment :: OpenStack',
|
|
'Intended Audience :: Information Technology',
|
|
'Intended Audience :: System Administrators',
|
|
'License :: OSI Approved :: Apache Software License',
|
|
'Operating System :: POSIX :: Linux',
|
|
'Programming Language :: Python',
|
|
'Programming Language :: Python :: 2',
|
|
'Programming Language :: Python :: 2.7',
|
|
],
|
|
cmdclass=common_setup.get_cmdclass(),
|
|
packages=setuptools.find_packages(exclude=['bin', 'smoketests']),
|
|
install_requires=requires,
|
|
entry_points={
|
|
'cinder.scheduler.filters': filters,
|
|
'cinder.scheduler.weights': weights,
|
|
},
|
|
include_package_data=True,
|
|
test_suite='nose.collector',
|
|
setup_requires=['setuptools_git>=0.4'],
|
|
scripts=['bin/cinder-all',
|
|
'bin/cinder-api',
|
|
'bin/cinder-clear-rabbit-queues',
|
|
'bin/cinder-manage',
|
|
'bin/cinder-rootwrap',
|
|
'bin/cinder-scheduler',
|
|
'bin/cinder-volume',
|
|
'bin/cinder-volume-usage-audit'],
|
|
py_modules=[])
|