81 lines
2.7 KiB
Python
81 lines
2.7 KiB
Python
# Copyright (c) 2015 Quobyte Inc.
|
|
# 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 os
|
|
|
|
from oslo_concurrency import processutils
|
|
from oslo_log import log as logging
|
|
|
|
from nova import exception as nova_exception
|
|
from nova.i18n import _
|
|
from nova.i18n import _LE
|
|
from nova.i18n import _LI
|
|
from nova.openstack.common import fileutils
|
|
from nova import utils
|
|
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
SOURCE_PROTOCOL = 'quobyte'
|
|
SOURCE_TYPE = 'file'
|
|
DRIVER_CACHE = 'none'
|
|
DRIVER_IO = 'native'
|
|
|
|
|
|
def mount_volume(volume, mnt_base, configfile=None):
|
|
"""Wraps execute calls for mounting a Quobyte volume"""
|
|
fileutils.ensure_tree(mnt_base)
|
|
|
|
command = ['mount.quobyte', volume, mnt_base]
|
|
if configfile:
|
|
command.extend(['-c', configfile])
|
|
|
|
LOG.debug('Mounting volume %s at mount point %s ...',
|
|
volume,
|
|
mnt_base)
|
|
# Run mount command but do not fail on already mounted exit code
|
|
utils.execute(*command, check_exit_code=[0, 4])
|
|
LOG.info(_LI('Mounted volume: %s'), volume)
|
|
|
|
|
|
def umount_volume(mnt_base):
|
|
"""Wraps execute calls for unmouting a Quobyte volume"""
|
|
try:
|
|
utils.execute('umount.quobyte', mnt_base)
|
|
except processutils.ProcessExecutionError as exc:
|
|
if 'Device or resource busy' in exc.message:
|
|
LOG.error(_LE("The Quobyte volume at %s is still in use."),
|
|
mnt_base)
|
|
else:
|
|
LOG.exception(_LE("Couldn't unmount the Quobyte Volume at %s"),
|
|
mnt_base)
|
|
|
|
|
|
def validate_volume(mnt_base):
|
|
"""Wraps execute calls for checking validity of a Quobyte volume"""
|
|
command = ['getfattr', "-n", "quobyte.info", mnt_base]
|
|
try:
|
|
utils.execute(*command)
|
|
except processutils.ProcessExecutionError as exc:
|
|
msg = (_("The mount %(mount_path)s is not a valid"
|
|
" Quobyte volume. Error: %(exc)s")
|
|
% {'mount_path': mnt_base, 'exc': exc})
|
|
raise nova_exception.NovaException(msg)
|
|
|
|
if not os.access(mnt_base, os.W_OK | os.X_OK):
|
|
msg = (_LE("Volume is not writable. Please broaden the file"
|
|
" permissions. Mount: %s") % mnt_base)
|
|
raise nova_exception.NovaException(msg)
|