Remove GlusterFS volume driver
This was flagged as deprecated during Newton. Change-Id: I10c576602dd0e65947d1a1af5d04b8ada54f4625
This commit is contained in:
Eric Harney
parent
14899a9a8e
commit
16e93ccd4f
@ -979,19 +979,6 @@ class SmbfsNoSuitableShareFound(RemoteFSNoSuitableShareFound):
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message = _("There is no share which can host %(volume_size)sG.")
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# Gluster driver
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class GlusterfsException(RemoteFSException):
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message = _("Unknown Gluster exception")
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class GlusterfsNoSharesMounted(RemoteFSNoSharesMounted):
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message = _("No mounted Gluster shares found")
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class GlusterfsNoSuitableShareFound(RemoteFSNoSuitableShareFound):
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message = _("There is no share which can host %(volume_size)sG")
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# Virtuozzo Storage Driver
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class VzStorageException(RemoteFSException):
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@ -92,7 +92,6 @@ from cinder.volume.drivers.fujitsu import eternus_dx_common as \
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cinder_volume_drivers_fujitsu_eternusdxcommon
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from cinder.volume.drivers.fusionstorage import dsware as \
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cinder_volume_drivers_fusionstorage_dsware
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from cinder.volume.drivers import glusterfs as cinder_volume_drivers_glusterfs
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from cinder.volume.drivers import hgst as cinder_volume_drivers_hgst
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from cinder.volume.drivers.hitachi import hbsd_common as \
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cinder_volume_drivers_hitachi_hbsdcommon
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@ -274,7 +273,6 @@ def list_opts():
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cinder_volume_drivers_fujitsu_eternusdxcommon.
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FJ_ETERNUS_DX_OPT_opts,
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cinder_volume_drivers_fusionstorage_dsware.volume_opts,
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cinder_volume_drivers_glusterfs.volume_opts,
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cinder_volume_drivers_hgst.hgst_opts,
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cinder_volume_drivers_hitachi_hbsdcommon.volume_opts,
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cinder_volume_drivers_hitachi_hbsdfc.volume_opts,
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File diff suppressed because it is too large
Load Diff
@ -1,479 +0,0 @@
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# Copyright (c) 2013 Red Hat, Inc.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import errno
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import os
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import stat
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from os_brick.remotefs import remotefs as remotefs_brick
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from oslo_concurrency import processutils
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from oslo_config import cfg
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from oslo_log import log as logging
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from oslo_utils import fileutils
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from oslo_utils import units
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from cinder import coordination
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from cinder import exception
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from cinder.i18n import _, _LE, _LI, _LW
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from cinder.image import image_utils
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from cinder import interface
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from cinder import utils
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from cinder.volume import driver
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from cinder.volume.drivers import remotefs as remotefs_drv
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LOG = logging.getLogger(__name__)
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volume_opts = [
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cfg.StrOpt('glusterfs_shares_config',
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default='/etc/cinder/glusterfs_shares',
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help='File with the list of available gluster shares'),
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cfg.StrOpt('glusterfs_mount_point_base',
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default='$state_path/mnt',
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help='Base dir containing mount points for gluster shares.'),
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]
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CONF = cfg.CONF
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CONF.register_opts(volume_opts)
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@interface.volumedriver
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class GlusterfsDriver(remotefs_drv.RemoteFSSnapDriverDistributed,
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driver.ExtendVD):
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"""Gluster based cinder driver.
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Creates file on Gluster share for using it as block device on hypervisor.
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Operations such as create/delete/extend volume/snapshot use locking on a
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per-process basis to prevent multiple threads from modifying qcow2 chains
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or the snapshot .info file simultaneously.
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"""
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driver_volume_type = 'glusterfs'
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driver_prefix = 'glusterfs'
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volume_backend_name = 'GlusterFS'
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VERSION = '1.3.0'
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# ThirdPartySystems wiki page
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CI_WIKI_NAME = "Cinder_Jenkins"
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def __init__(self, execute=processutils.execute, *args, **kwargs):
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self._remotefsclient = None
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super(GlusterfsDriver, self).__init__(*args, **kwargs)
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self.configuration.append_config_values(volume_opts)
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root_helper = utils.get_root_helper()
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self.base = getattr(self.configuration,
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'glusterfs_mount_point_base',
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CONF.glusterfs_mount_point_base)
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self._remotefsclient = remotefs_brick.RemoteFsClient(
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'glusterfs', root_helper, execute,
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glusterfs_mount_point_base=self.base)
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def do_setup(self, context):
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"""Any initialization the volume driver does while starting."""
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super(GlusterfsDriver, self).do_setup(context)
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LOG.warning(_LW("The GlusterFS volume driver is deprecated and "
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"will be removed during the Ocata cycle."))
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config = self.configuration.glusterfs_shares_config
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if not config:
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msg = (_("There's no Gluster config file configured (%s)") %
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'glusterfs_shares_config')
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LOG.warning(msg)
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raise exception.GlusterfsException(msg)
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if not os.path.exists(config):
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msg = (_("Gluster config file at %(config)s doesn't exist") %
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{'config': config})
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LOG.warning(msg)
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raise exception.GlusterfsException(msg)
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self.shares = {}
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try:
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self._execute('mount.glusterfs', check_exit_code=False)
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except OSError as exc:
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if exc.errno == errno.ENOENT:
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raise exception.GlusterfsException(
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_('mount.glusterfs is not installed'))
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else:
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raise
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self._refresh_mounts()
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def _unmount_shares(self):
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self._load_shares_config(self.configuration.glusterfs_shares_config)
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for share in self.shares.keys():
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try:
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self._do_umount(True, share)
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except Exception as exc:
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LOG.warning(_LW('Exception during unmounting %s'), exc)
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def _do_umount(self, ignore_not_mounted, share):
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mount_path = self._get_mount_point_for_share(share)
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command = ['umount', mount_path]
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try:
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self._execute(*command, run_as_root=True)
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except processutils.ProcessExecutionError as exc:
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if ignore_not_mounted and 'not mounted' in exc.stderr:
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LOG.info(_LI("%s is already umounted"), share)
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else:
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LOG.error(_LE("Failed to umount %(share)s, reason=%(stderr)s"),
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{'share': share, 'stderr': exc.stderr})
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raise
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def _refresh_mounts(self):
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try:
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self._unmount_shares()
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except processutils.ProcessExecutionError as exc:
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if 'target is busy' in exc.stderr:
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LOG.warning(_LW("Failed to refresh mounts, reason=%s"),
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exc.stderr)
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else:
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raise
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self._ensure_shares_mounted()
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def _qemu_img_info(self, path, volume_name):
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return super(GlusterfsDriver, self)._qemu_img_info_base(
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path, volume_name, self.configuration.glusterfs_mount_point_base)
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def check_for_setup_error(self):
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"""Just to override parent behavior."""
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pass
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def _local_volume_dir(self, volume):
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hashed = self._get_hash_str(volume.provider_location)
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path = '%s/%s' % (self.configuration.glusterfs_mount_point_base,
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hashed)
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return path
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def _active_volume_path(self, volume):
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volume_dir = self._local_volume_dir(volume)
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path = os.path.join(volume_dir,
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self.get_active_image_from_info(volume))
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return path
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def _update_volume_stats(self):
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"""Retrieve stats info from volume group."""
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super(GlusterfsDriver, self)._update_volume_stats()
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data = self._stats
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global_capacity = data['total_capacity_gb']
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global_free = data['free_capacity_gb']
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thin_enabled = self.configuration.nas_volume_prov_type == 'thin'
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if thin_enabled:
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provisioned_capacity = self._get_provisioned_capacity()
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else:
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provisioned_capacity = round(global_capacity - global_free, 2)
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data['provisioned_capacity_gb'] = provisioned_capacity
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data['max_over_subscription_ratio'] = (
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self.configuration.max_over_subscription_ratio)
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data['thin_provisioning_support'] = thin_enabled
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data['thick_provisioning_support'] = not thin_enabled
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self._stats = data
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@coordination.synchronized('{self.driver_prefix}-{volume[id]}')
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def create_volume(self, volume):
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"""Creates a volume."""
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self._ensure_shares_mounted()
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volume.provider_location = self._find_share(volume.size)
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LOG.info(_LI('casted to %s'), volume.provider_location)
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self._do_create_volume(volume)
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return {'provider_location': volume.provider_location}
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def _copy_volume_from_snapshot(self, snapshot, volume, volume_size):
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"""Copy data from snapshot to destination volume.
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This is done with a qemu-img convert to raw/qcow2 from the snapshot
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qcow2.
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"""
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LOG.debug("snapshot: %(snap)s, volume: %(vol)s, "
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"volume_size: %(size)s",
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{'snap': snapshot.id,
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'vol': volume.id,
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'size': volume_size})
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info_path = self._local_path_volume_info(snapshot.volume)
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snap_info = self._read_info_file(info_path)
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vol_path = self._local_volume_dir(snapshot.volume)
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forward_file = snap_info[snapshot.id]
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forward_path = os.path.join(vol_path, forward_file)
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# Find the file which backs this file, which represents the point
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# when this snapshot was created.
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img_info = self._qemu_img_info(forward_path,
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snapshot.volume.name)
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path_to_snap_img = os.path.join(vol_path, img_info.backing_file)
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path_to_new_vol = self._local_path_volume(volume)
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LOG.debug("will copy from snapshot at %s", path_to_snap_img)
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if self.configuration.nas_volume_prov_type == 'thin':
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out_format = 'qcow2'
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else:
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out_format = 'raw'
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image_utils.convert_image(path_to_snap_img,
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path_to_new_vol,
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out_format)
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self._set_rw_permissions_for_all(path_to_new_vol)
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@coordination.synchronized('{self.driver_prefix}-{volume[id]}')
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def delete_volume(self, volume):
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"""Deletes a logical volume."""
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if not volume.provider_location:
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LOG.warning(_LW('Volume %s does not have '
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'provider_location specified, '
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'skipping'), volume.name)
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return
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self._ensure_share_mounted(volume.provider_location)
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mounted_path = self._active_volume_path(volume)
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self._execute('rm', '-f', mounted_path, run_as_root=True)
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# If an exception (e.g. timeout) occurred during delete_snapshot, the
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# base volume may linger around, so just delete it if it exists
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base_volume_path = self._local_path_volume(volume)
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fileutils.delete_if_exists(base_volume_path)
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info_path = self._local_path_volume_info(volume)
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fileutils.delete_if_exists(info_path)
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def _get_matching_backing_file(self, backing_chain, snapshot_file):
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return next(f for f in backing_chain
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if f.get('backing-filename', '') == snapshot_file)
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def ensure_export(self, ctx, volume):
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"""Synchronously recreates an export for a logical volume."""
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self._ensure_share_mounted(volume.provider_location)
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def create_export(self, ctx, volume, connector):
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"""Exports the volume."""
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pass
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def remove_export(self, ctx, volume):
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"""Removes an export for a logical volume."""
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pass
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def validate_connector(self, connector):
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pass
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@coordination.synchronized('{self.driver_prefix}-{volume[id]}')
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def initialize_connection(self, volume, connector):
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"""Allow connection to connector and return connection info."""
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# Find active qcow2 file
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active_file = self.get_active_image_from_info(volume)
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path = '%s/%s/%s' % (self.configuration.glusterfs_mount_point_base,
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self._get_hash_str(volume.provider_location),
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active_file)
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data = {'export': volume.provider_location,
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'name': active_file}
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if volume.provider_location in self.shares:
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data['options'] = self.shares[volume.provider_location]
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# Test file for raw vs. qcow2 format
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info = self._qemu_img_info(path, volume.name)
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data['format'] = info.file_format
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if data['format'] not in ['raw', 'qcow2']:
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msg = _('%s must be a valid raw or qcow2 image.') % path
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raise exception.InvalidVolume(msg)
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return {
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'driver_volume_type': 'glusterfs',
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'data': data,
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'mount_point_base': self._get_mount_point_base()
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}
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def terminate_connection(self, volume, connector, **kwargs):
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"""Disallow connection from connector."""
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pass
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@coordination.synchronized('{self.driver_prefix}-{volume[id]}')
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def extend_volume(self, volume, size_gb):
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volume_path = self._active_volume_path(volume)
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info = self._qemu_img_info(volume_path, volume.name)
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backing_fmt = info.file_format
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if backing_fmt not in ['raw', 'qcow2']:
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msg = _('Unrecognized backing format: %s')
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raise exception.InvalidVolume(msg % backing_fmt)
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# qemu-img can resize both raw and qcow2 files
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image_utils.resize_image(volume_path, size_gb)
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def _do_create_volume(self, volume):
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"""Create a volume on given glusterfs_share.
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:param volume: volume reference
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"""
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volume_path = self.local_path(volume)
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volume_size = volume.size
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LOG.debug("creating new volume at %s", volume_path)
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if os.path.exists(volume_path):
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msg = _('file already exists at %s') % volume_path
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LOG.error(msg)
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raise exception.InvalidVolume(reason=msg)
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if self.configuration.nas_volume_prov_type == 'thin':
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self._create_qcow2_file(volume_path, volume_size)
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else:
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try:
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self._fallocate(volume_path, volume_size)
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except processutils.ProcessExecutionError as exc:
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if 'Operation not supported' in exc.stderr:
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LOG.warning(_LW('Fallocate not supported by current '
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'version of glusterfs. So falling '
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'back to dd.'))
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self._create_regular_file(volume_path, volume_size)
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else:
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fileutils.delete_if_exists(volume_path)
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raise
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self._set_rw_permissions_for_all(volume_path)
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def _ensure_shares_mounted(self):
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"""Mount all configured GlusterFS shares."""
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self._mounted_shares = []
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self._load_shares_config(self.configuration.glusterfs_shares_config)
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for share in self.shares.keys():
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try:
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self._ensure_share_mounted(share)
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self._mounted_shares.append(share)
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except Exception as exc:
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LOG.error(_LE('Exception during mounting %s'), exc)
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LOG.debug('Available shares: %s', self._mounted_shares)
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def _ensure_share_mounted(self, glusterfs_share):
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"""Mount GlusterFS share.
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:param glusterfs_share: string
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"""
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mount_path = self._get_mount_point_for_share(glusterfs_share)
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self._mount_glusterfs(glusterfs_share)
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# Ensure we can write to this share
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group_id = os.getegid()
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current_group_id = utils.get_file_gid(mount_path)
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current_mode = utils.get_file_mode(mount_path)
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if group_id != current_group_id:
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cmd = ['chgrp', group_id, mount_path]
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self._execute(*cmd, run_as_root=True)
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if not (current_mode & stat.S_IWGRP):
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cmd = ['chmod', 'g+w', mount_path]
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self._execute(*cmd, run_as_root=True)
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self._ensure_share_writable(mount_path)
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def _find_share(self, volume_size_for):
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"""Choose GlusterFS share among available ones for given volume size.
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Current implementation looks for greatest capacity.
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:param volume_size_for: int size in GB
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"""
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if not self._mounted_shares:
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raise exception.GlusterfsNoSharesMounted()
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greatest_size = 0
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greatest_share = None
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for glusterfs_share in self._mounted_shares:
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capacity = self._get_available_capacity(glusterfs_share)[0]
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if capacity > greatest_size:
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greatest_share = glusterfs_share
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greatest_size = capacity
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if volume_size_for * units.Gi > greatest_size:
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raise exception.GlusterfsNoSuitableShareFound(
|
||||
volume_size=volume_size_for)
|
||||
return greatest_share
|
||||
|
||||
def _mount_glusterfs(self, glusterfs_share):
|
||||
"""Mount GlusterFS share to mount path."""
|
||||
mnt_flags = []
|
||||
if self.shares.get(glusterfs_share) is not None:
|
||||
mnt_flags = self.shares[glusterfs_share].split()
|
||||
try:
|
||||
self._remotefsclient.mount(glusterfs_share, mnt_flags)
|
||||
except processutils.ProcessExecutionError:
|
||||
LOG.error(_LE("Mount failure for %(share)s."),
|
||||
{'share': glusterfs_share})
|
||||
raise
|
||||
|
||||
def backup_volume(self, context, backup, backup_service):
|
||||
"""Create a new backup from an existing volume.
|
||||
|
||||
Allow a backup to occur only if no snapshots exist.
|
||||
Check both Cinder and the file on-disk. The latter is only
|
||||
a safety mechanism to prevent further damage if the snapshot
|
||||
information is already inconsistent.
|
||||
"""
|
||||
|
||||
snapshots = self.db.snapshot_get_all_for_volume(context,
|
||||
backup['volume_id'])
|
||||
snap_error_msg = _('Backup is not supported for GlusterFS '
|
||||
'volumes with snapshots.')
|
||||
if len(snapshots) > 0:
|
||||
raise exception.InvalidVolume(snap_error_msg)
|
||||
|
||||
volume = self.db.volume_get(context, backup['volume_id'])
|
||||
|
||||
active_file_path = self._active_volume_path(volume)
|
||||
|
||||
info = self._qemu_img_info(active_file_path, volume.name)
|
||||
|
||||
if info.backing_file is not None:
|
||||
LOG.error(_LE('No snapshots found in database, but %(path)s has '
|
||||
'backing file %(backing_file)s!'),
|
||||
{'path': active_file_path,
|
||||
'backing_file': info.backing_file})
|
||||
raise exception.InvalidVolume(snap_error_msg)
|
||||
|
||||
if info.file_format != 'raw':
|
||||
msg = _('Backup is only supported for raw-formatted '
|
||||
'GlusterFS volumes.')
|
||||
raise exception.InvalidVolume(msg)
|
||||
|
||||
return super(GlusterfsDriver, self).backup_volume(
|
||||
context, backup, backup_service)
|
||||
@ -0,0 +1,5 @@
|
||||
---
|
||||
upgrade:
|
||||
- The GlusterFS volume driver, which was deprecated
|
||||
in the Newton release, has been removed.
|
||||
|
||||
Loading…
Reference in New Issue
Block a user