112 lines
3.9 KiB
Python
112 lines
3.9 KiB
Python
#!/usr/bin/env python
|
|
|
|
# Copyright (C) 2012 Hewlett-Packard Development Company, L.P.
|
|
# 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.
|
|
|
|
"""Starter script for Cinder Volume Backup."""
|
|
|
|
import logging as python_logging
|
|
import shlex
|
|
import sys
|
|
|
|
# NOTE(geguileo): Monkey patching must go before OSLO.log import, otherwise
|
|
# OSLO.context will not use greenthread thread local and all greenthreads will
|
|
# share the same context.
|
|
import eventlet
|
|
eventlet.monkey_patch()
|
|
# Monkey patch the original current_thread to use the up-to-date _active
|
|
# global variable. See https://bugs.launchpad.net/bugs/1863021 and
|
|
# https://github.com/eventlet/eventlet/issues/592
|
|
import __original_module_threading as orig_threading
|
|
import threading # noqa
|
|
orig_threading.current_thread.__globals__['_active'] = threading._active
|
|
|
|
from oslo_concurrency import processutils
|
|
from oslo_config import cfg
|
|
from oslo_log import log as logging
|
|
from oslo_privsep import priv_context
|
|
from oslo_reports import guru_meditation_report as gmr
|
|
from oslo_reports import opts as gmr_opts
|
|
|
|
# Need to register global_opts
|
|
from cinder.common import config # noqa
|
|
from cinder.db import api as session
|
|
from cinder import i18n
|
|
i18n.enable_lazy()
|
|
from cinder import objects
|
|
from cinder import service
|
|
from cinder import utils
|
|
from cinder import version
|
|
|
|
|
|
CONF = cfg.CONF
|
|
|
|
backup_workers_opt = cfg.IntOpt(
|
|
'backup_workers',
|
|
default=1, min=1, max=processutils.get_worker_count(),
|
|
help='Number of backup processes to launch. Improves performance with '
|
|
'concurrent backups.')
|
|
CONF.register_opt(backup_workers_opt)
|
|
|
|
LOG = None
|
|
|
|
# NOTE(mriedem): The default backup driver uses swift and performs read/write
|
|
# operations in a thread. swiftclient will log requests and responses at DEBUG
|
|
# level, which can cause a thread switch and break the backup operation. So we
|
|
# set a default log level of WARN for swiftclient to try and avoid this issue.
|
|
_EXTRA_DEFAULT_LOG_LEVELS = ['swiftclient=WARN']
|
|
|
|
|
|
def _launch_backup_process(launcher, num_process):
|
|
try:
|
|
server = service.Service.create(binary='cinder-backup',
|
|
coordination=True,
|
|
service_name='backup',
|
|
process_number=num_process)
|
|
except Exception:
|
|
LOG.exception('Backup service %s failed to start.', CONF.host)
|
|
sys.exit(1)
|
|
else:
|
|
# Dispose of the whole DB connection pool here before
|
|
# starting another process. Otherwise we run into cases where
|
|
# child processes share DB connections which results in errors.
|
|
session.dispose_engine()
|
|
launcher.launch_service(server)
|
|
|
|
|
|
def main():
|
|
objects.register_all()
|
|
gmr_opts.set_defaults(CONF)
|
|
CONF(sys.argv[1:], project='cinder',
|
|
version=version.version_string())
|
|
logging.set_defaults(
|
|
default_log_levels=logging.get_default_log_levels() +
|
|
_EXTRA_DEFAULT_LOG_LEVELS)
|
|
logging.setup(CONF, "cinder")
|
|
python_logging.captureWarnings(True)
|
|
priv_context.init(root_helper=shlex.split(utils.get_root_helper()))
|
|
utils.monkey_patch()
|
|
gmr.TextGuruMeditation.setup_autorun(version, conf=CONF)
|
|
global LOG
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
LOG.info('Backup running with %s processes.', CONF.backup_workers)
|
|
launcher = service.get_launcher()
|
|
|
|
for i in range(1, CONF.backup_workers + 1):
|
|
_launch_backup_process(launcher, i)
|
|
|
|
launcher.wait()
|