26b1431f20
Remove the requirement to mount disk images on the host filesystem for file injection, by switching over to use the new VFS APIs. The mount code is now solely used for setting up LXC disk images blueprint: virt-disk-api-refactoring Change-Id: I1335bf7a8266d3d1d410a66538969f1213766cb9 Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
152 lines
5.6 KiB
Python
152 lines
5.6 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 Isaku Yamahata
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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 os
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from nova import exception
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from nova import test
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from nova import tests
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from nova import utils
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from nova.virt.disk import api as disk_api
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from nova.virt import driver
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from nova.openstack.common import jsonutils
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class TestVirtDriver(test.TestCase):
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def test_block_device(self):
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swap = {'device_name': '/dev/sdb',
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'swap_size': 1}
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ephemerals = [{'num': 0,
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'virtual_name': 'ephemeral0',
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'device_name': '/dev/sdc1',
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'size': 1}]
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block_device_mapping = [{'mount_device': '/dev/sde',
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'device_path': 'fake_device'}]
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block_device_info = {
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'root_device_name': '/dev/sda',
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'swap': swap,
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'ephemerals': ephemerals,
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'block_device_mapping': block_device_mapping}
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empty_block_device_info = {}
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self.assertEqual(
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driver.block_device_info_get_root(block_device_info), '/dev/sda')
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self.assertEqual(
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driver.block_device_info_get_root(empty_block_device_info), None)
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self.assertEqual(
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driver.block_device_info_get_root(None), None)
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self.assertEqual(
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driver.block_device_info_get_swap(block_device_info), swap)
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self.assertEqual(driver.block_device_info_get_swap(
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empty_block_device_info)['device_name'], None)
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self.assertEqual(driver.block_device_info_get_swap(
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empty_block_device_info)['swap_size'], 0)
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self.assertEqual(
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driver.block_device_info_get_swap({'swap': None})['device_name'],
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None)
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self.assertEqual(
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driver.block_device_info_get_swap({'swap': None})['swap_size'],
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0)
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self.assertEqual(
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driver.block_device_info_get_swap(None)['device_name'], None)
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self.assertEqual(
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driver.block_device_info_get_swap(None)['swap_size'], 0)
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self.assertEqual(
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driver.block_device_info_get_ephemerals(block_device_info),
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ephemerals)
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self.assertEqual(
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driver.block_device_info_get_ephemerals(empty_block_device_info),
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[])
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self.assertEqual(
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driver.block_device_info_get_ephemerals(None),
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[])
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def test_swap_is_usable(self):
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self.assertFalse(driver.swap_is_usable(None))
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self.assertFalse(driver.swap_is_usable({'device_name': None}))
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self.assertFalse(driver.swap_is_usable({'device_name': '/dev/sdb',
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'swap_size': 0}))
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self.assertTrue(driver.swap_is_usable({'device_name': '/dev/sdb',
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'swap_size': 1}))
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class TestVirtDisk(test.TestCase):
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def setUp(self):
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super(TestVirtDisk, self).setUp()
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self.executes = []
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def fake_execute(*cmd, **kwargs):
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self.executes.append(cmd)
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return None, None
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self.stubs.Set(utils, 'execute', fake_execute)
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def test_lxc_destroy_container(self):
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def proc_mounts(self, mount_point):
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mount_points = {
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'/mnt/loop/nopart': '/dev/loop0',
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'/mnt/loop/part': '/dev/mapper/loop0p1',
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'/mnt/nbd/nopart': '/dev/nbd15',
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'/mnt/nbd/part': '/dev/mapper/nbd15p1',
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'/mnt/guestfs': 'guestmount',
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}
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return mount_points[mount_point]
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self.stubs.Set(os.path, 'exists', lambda _: True)
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self.stubs.Set(disk_api._DiskImage, '_device_for_path', proc_mounts)
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expected_commands = []
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disk_api.destroy_container('/mnt/loop/nopart')
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expected_commands += [
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('umount', '/dev/loop0'),
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('losetup', '--detach', '/dev/loop0'),
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]
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disk_api.destroy_container('/mnt/loop/part')
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expected_commands += [
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('umount', '/dev/mapper/loop0p1'),
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('kpartx', '-d', '/dev/loop0'),
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('losetup', '--detach', '/dev/loop0'),
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]
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disk_api.destroy_container('/mnt/nbd/nopart')
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expected_commands += [
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('umount', '/dev/nbd15'),
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('qemu-nbd', '-d', '/dev/nbd15'),
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]
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disk_api.destroy_container('/mnt/nbd/part')
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expected_commands += [
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('umount', '/dev/mapper/nbd15p1'),
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('kpartx', '-d', '/dev/nbd15'),
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('qemu-nbd', '-d', '/dev/nbd15'),
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]
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disk_api.destroy_container('/mnt/guestfs')
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expected_commands += [
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('fusermount', '-u', '/mnt/guestfs'),
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]
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# It's not worth trying to match the last timeout command
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self.executes.pop()
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self.assertEqual(self.executes, expected_commands)
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