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Merge "Fixes multi-registry config in Quobyte driver" into stable/queens

tags/17.0.13^0
Zuul Gerrit Code Review 3 months ago
parent
commit
0f0693f0d8
4 changed files with 59 additions and 38 deletions
  1. +4
    -0
      nova/exception.py
  2. +22
    -12
      nova/tests/unit/virt/libvirt/volume/test_quobyte.py
  3. +28
    -26
      nova/virt/libvirt/volume/quobyte.py
  4. +5
    -0
      releasenotes/notes/qb-bug-1730933-6695470ebaee0fbd.yaml

+ 4
- 0
nova/exception.py View File

@@ -342,6 +342,10 @@ class InvalidVolumeAccessMode(Invalid):
msg_fmt = _("Invalid volume access mode: %(access_mode)s")


class StaleVolumeMount(InvalidVolume):
msg_fmt = _("The volume mount at %(mount_path)s is unusable.")


class InvalidMetadata(Invalid):
msg_fmt = _("Invalid metadata: %(reason)s")



+ 22
- 12
nova/tests/unit/virt/libvirt/volume/test_quobyte.py View File

@@ -294,13 +294,15 @@ class LibvirtQuobyteVolumeDriverTestCase(
test_volume.LibvirtVolumeBaseTestCase):
"""Tests the LibvirtQuobyteVolumeDriver class."""

@mock.patch.object(quobyte, 'umount_volume')
@mock.patch.object(quobyte, 'validate_volume')
@mock.patch.object(quobyte, 'mount_volume')
@mock.patch.object(libvirt_utils, 'is_mounted', return_value=False)
def test_libvirt_quobyte_driver_mount(self,
mock_is_mounted,
mock_mount_volume,
mock_validate_volume
mock_validate_volume,
mock_umount_volume
):
mnt_base = '/mnt'
self.flags(quobyte_mount_point_base=mnt_base, group='libvirt')
@@ -314,6 +316,9 @@ class LibvirtQuobyteVolumeDriverTestCase(

connection_info = {'data': {'export': export_string,
'name': self.name}}
mock_validate_volume.side_effect = [nova_exception.StaleVolumeMount(
"This shall fail."), True, True]

libvirt_driver.connect_volume(connection_info, mock.sentinel.instance)

conf = libvirt_driver.get_config(connection_info, self.disk_info)
@@ -325,12 +330,12 @@ class LibvirtQuobyteVolumeDriverTestCase(
export_mnt_base,
mock.ANY)
mock_validate_volume.assert_called_with(export_mnt_base)
mock_umount_volume.assert_called_once_with(
libvirt_driver._get_mount_path(connection_info))

@mock.patch.object(quobyte, 'validate_volume')
@mock.patch.object(quobyte, 'validate_volume', return_value=True)
@mock.patch.object(quobyte, 'umount_volume')
@mock.patch.object(libvirt_utils, 'is_mounted', return_value=True)
def test_libvirt_quobyte_driver_umount(self, mock_is_mounted,
mock_umount_volume,
def test_libvirt_quobyte_driver_umount(self, mock_umount_volume,
mock_validate_volume):
mnt_base = '/mnt'
self.flags(quobyte_mount_point_base=mnt_base, group='libvirt')
@@ -353,7 +358,9 @@ class LibvirtQuobyteVolumeDriverTestCase(
libvirt_driver.disconnect_volume(connection_info,
mock.sentinel.instance)

mock_validate_volume.assert_called_once_with(export_mnt_base)
mock_validate_volume.assert_has_calls([mock.call(export_mnt_base),
mock.call(export_mnt_base),
mock.call(export_mnt_base)])
mock_umount_volume.assert_called_once_with(export_mnt_base)

@mock.patch.object(quobyte, 'validate_volume')
@@ -386,15 +393,14 @@ class LibvirtQuobyteVolumeDriverTestCase(
mock.sentinel.instance)

mock_umount_volume.assert_called_once_with(export_mnt_base)
mock_validate_volume.assert_called_once_with(export_mnt_base)
mock_validate_volume.assert_has_calls([mock.call(export_mnt_base),
mock.call(export_mnt_base)])

@mock.patch.object(quobyte, 'umount_volume')
@mock.patch.object(quobyte, 'validate_volume')
@mock.patch.object(quobyte, 'mount_volume')
@mock.patch.object(libvirt_utils, 'is_mounted', return_value=False)
def test_libvirt_quobyte_driver_qcow2(self, mock_is_mounted,
mock_mount_volume,
mock_validate_volume
):
def test_libvirt_quobyte_driver_qcow2(self, mock_mount_volume,
mock_validate_volume, mock_umount):
mnt_base = '/mnt'
self.flags(quobyte_mount_point_base=mnt_base, group='libvirt')
libvirt_driver = quobyte.LibvirtQuobyteVolumeDriver(self.fake_host)
@@ -409,6 +415,8 @@ class LibvirtQuobyteVolumeDriverTestCase(

export_mnt_base = os.path.join(mnt_base,
utils.get_hash_str(quobyte_volume))
mock_validate_volume.side_effect = [nova_exception.StaleVolumeMount(
"This shall fail."), True, True]

libvirt_driver.connect_volume(connection_info, mock.sentinel.instance)
conf = libvirt_driver.get_config(connection_info, self.disk_info)
@@ -424,6 +432,8 @@ class LibvirtQuobyteVolumeDriverTestCase(

libvirt_driver.disconnect_volume(connection_info,
mock.sentinel.instance)
mock_umount.assert_has_calls([mock.call(export_mnt_base),
mock.call(export_mnt_base)])

@mock.patch.object(libvirt_utils, 'is_mounted', return_value=True)
def test_libvirt_quobyte_driver_mount_non_quobyte_volume(self,


+ 28
- 26
nova/virt/libvirt/volume/quobyte.py View File

@@ -13,7 +13,6 @@
# License for the specific language governing permissions and limitations
# under the License.

import errno
import os

from oslo_concurrency import processutils
@@ -26,7 +25,6 @@ import nova.conf
from nova import exception as nova_exception
from nova.i18n import _
from nova import utils
from nova.virt.libvirt import utils as libvirt_utils
from nova.virt.libvirt.volume import fs

LOG = logging.getLogger(__name__)
@@ -75,7 +73,10 @@ def umount_volume(mnt_base):


def validate_volume(mount_path):
"""Runs a number of tests to be sure this is a (working) Quobyte mount"""
"""Determine if the volume is a valid Quobyte mount.

Runs a number of tests to be sure this is a (working) Quobyte mount
"""
partitions = psutil.disk_partitions(all=True)
for p in partitions:
if mount_path != p.mountpoint:
@@ -90,10 +91,10 @@ def validate_volume(mount_path):
msg = (_("The mount %(mount_path)s is not a "
"valid Quobyte volume. Stale mount?")
% {'mount_path': mount_path})
raise nova_exception.InvalidVolume(msg)
raise nova_exception.StaleVolumeMount(msg, mount_path=mount_path)
else:
msg = (_("The mount %(mount_path)s is not a valid"
" Quobyte volume according to partition list.")
msg = (_("The mount %(mount_path)s is not a valid "
"Quobyte volume according to partition list.")
% {'mount_path': mount_path})
raise nova_exception.InvalidVolume(msg)
msg = (_("No matching Quobyte mount entry for %(mount_path)s"
@@ -128,39 +129,40 @@ class LibvirtQuobyteVolumeDriver(fs.LibvirtBaseFileSystemVolumeDriver):
data = connection_info['data']
quobyte_volume = self._normalize_export(data['export'])
mount_path = self._get_mount_path(connection_info)
mounted = libvirt_utils.is_mounted(mount_path,
SOURCE_PROTOCOL
+ '@' + quobyte_volume)
if mounted:
try:
os.stat(mount_path)
except OSError as exc:
if exc.errno == errno.ENOTCONN:
mounted = False
LOG.info('Fixing previous mount %s which was not'
' unmounted correctly.', mount_path)
umount_volume(mount_path)
try:
validate_volume(mount_path)
mounted = True
except nova_exception.StaleVolumeMount:
mounted = False
LOG.info('Fixing previous mount %s which was not '
'unmounted correctly.', mount_path)
umount_volume(mount_path)
except nova_exception.InvalidVolume:
mounted = False

if not mounted:
mount_volume(quobyte_volume,
mount_path,
CONF.libvirt.quobyte_client_cfg)

validate_volume(mount_path)
try:
validate_volume(mount_path)
except (nova_exception.InvalidVolume,
nova_exception.StaleVolumeMount) as nex:
LOG.error("Could not mount Quobyte volume: %s", nex)

@utils.synchronized('connect_qb_volume')
def disconnect_volume(self, connection_info, instance):
"""Disconnect the volume."""

quobyte_volume = self._normalize_export(
connection_info['data']['export'])
mount_path = self._get_mount_path(connection_info)

if libvirt_utils.is_mounted(mount_path, 'quobyte@' + quobyte_volume):
umount_volume(mount_path)
try:
validate_volume(mount_path)
except (nova_exception.InvalidVolume,
nova_exception.StaleVolumeMount) as exc:
LOG.warning("Could not disconnect Quobyte volume mount: %s", exc)
else:
LOG.info("Trying to disconnected unmounted volume at %s",
mount_path)
umount_volume(mount_path)

def _normalize_export(self, export):
protocol = SOURCE_PROTOCOL + "://"


+ 5
- 0
releasenotes/notes/qb-bug-1730933-6695470ebaee0fbd.yaml View File

@@ -0,0 +1,5 @@
---
fixes:
- |
Fixes a bug that caused Nova to fail on mounting Quobyte volumes
whose volume URL contained multiple registries.

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