OpenStack Block Storage (Cinder)
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# Copyright 2016 Red Hat, Inc
# Copyright 2017 Rackspace Australia
# Copyright 2018 Michael Still and Aptira
#
# 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.
"""
Helpers for cgroup related routines.
"""
from oslo_concurrency import processutils
import cinder.privsep
@cinder.privsep.sys_admin_pctxt.entrypoint
def cgroup_create(name):
processutils.execute('cgcreate', '-g', 'blkio:%s' % name)
@cinder.privsep.sys_admin_pctxt.entrypoint
def cgroup_limit(name, rw, dev, bps):
processutils.execute('cgset', '-r',
'blkio.throttle.%s_bps_device=%s %d' % (rw, dev, bps),
name)