280 lines
10 KiB
Python
280 lines
10 KiB
Python
#
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# Copyright 2017 Cray Inc. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import unittest2
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import mock
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from bareon import errors
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from bareon.tests import utils
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from bareon.utils import block_device
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sector = 512
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KiB = 1024
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MiB = KiB * KiB
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class TestDeviceFinder(unittest2.TestCase):
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_device_info = {
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'sample0': {
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'bspec': {'alignoff': '0',
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'iomin': '4096',
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'ioopt': '0',
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'maxsect': '2560',
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'pbsz': '4096',
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'ra': '256',
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'ro': '0',
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'size64': '1000204886016',
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'ss': '512',
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'sz': '1953525168'},
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'device': '/dev/sda',
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'espec': {'removable': '0',
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'state': 'running',
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'timeout': '30',
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'vendor': 'ATA'},
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'uspec': {'DEVLINKS': ['/dev/disk/by-id/wwn-0x5000c50060fce0bf',
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'/dev/disk/by-id/ata-ST1000DM003-1CH162_'
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'S1D9PHQM'],
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'DEVNAME': '/dev/sda',
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'DEVPATH': '/devices/pci0000:00/0000:00:1f.2/ata1/host0'
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'/target0:0:0/0:0:0:0/block/sda',
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'DEVTYPE': 'disk',
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'ID_BUS': 'ata',
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'ID_MODEL': 'ST1000DM003-1CH162',
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'ID_SERIAL_SHORT': 'S1D9PHQM',
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'ID_WWN': '0x5000c50060fce0bf',
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'MAJOR': '8',
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'MINOR': '0'}}}
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def setUp(self):
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super(TestDeviceFinder, self).setUp()
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self.block_device_list = mock.Mock()
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self.device_info = mock.Mock()
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self.dev_to_scsi_map = mock.Mock()
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for path, m in (
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('bareon.utils.hardware.'
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'get_block_data_from_udev', self.block_device_list),
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('bareon.utils.hardware.'
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'get_device_info', self.device_info),
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('bareon.utils.hardware.'
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'dev_to_scsi_map', self.dev_to_scsi_map)):
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patch = mock.patch(path, m)
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patch.start()
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self.addCleanup(patch.stop)
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self.dev_to_scsi_map.return_value = {}
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def test(self):
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self.block_device_list.side_effect = [
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['/dev/sda'],
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[]]
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self.device_info.side_effect = [
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self._device_info['sample0']]
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self.dev_to_scsi_map.return_value = {
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'/dev/sda': '0:0:0:0'}
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finder = block_device.DeviceFinder()
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for kind, needle in (
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('name', 'sda'),
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('name', '/dev/sda'),
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('path', 'disk/by-id/wwn-0x5000c50060fce0bf'),
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('path', '/dev/disk/by-id/wwn-0x5000c50060fce0bf'),
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('scsi', '0:0:0:0')):
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dev = finder(kind, needle)
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self.assertEqual(dev['uspec']['DEVNAME'], '/dev/sda')
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for kind, needle in (
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('name', '/dev/missing'),):
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self.assertRaises(
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errors.BlockDeviceNotFoundError, finder, kind, needle)
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class TestSpaceClaim(unittest2.TestCase):
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def test_percentage(self):
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claim = block_device.SpaceClaim.new_by_sizeunit(
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block_device.SizeUnit.new_by_string('20 %'))
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self.assertEqual(
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(block_device.SpaceClaim.KIND_PERCENTAGE, (20, '%')),
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(claim.kind, (claim.size.value, claim.size.unit)))
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def test_exact(self):
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claim = block_device.SpaceClaim.new_by_sizeunit(
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block_device.SizeUnit.new_by_string('100 MiB'))
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self.assertEqual(
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(block_device.SpaceClaim.KIND_EXACT, (100, 'MiB')),
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(claim.kind, (claim.size.value, claim.size.unit)))
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class TestSizeUnit(unittest2.TestCase):
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def test_all_suffixes(self):
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for value, suffix, expect in (
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(25.5, '%', ('25.5 %', None)),
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(5, 's', ('5 s', 512 * 5)),
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(200, 'B', ('200 B', 200)),
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(2, 'KB', ('2 KB', 2 * 1000)),
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(2, 'MB', ('2 MB', 2 * 1000 ** 2)),
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(2, 'GB', ('2 GB', 2 * 1000 ** 3)),
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(2, 'TB', ('2 TB', 2 * 1000 ** 4)),
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(2, 'PB', ('2 PB', 2 * 1000 ** 5)),
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(2, 'EB', ('2 EB', 2 * 1000 ** 6)),
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(2, 'ZB', ('2 ZB', 2 * 1000 ** 7)),
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(2, 'YB', ('2 YB', 2 * 1000 ** 8)),
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(2, 'KiB', ('2 KiB', 2 * 1024)),
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(2, 'MiB', ('2 MiB', 2 * 1024 ** 2)),
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(2, 'GiB', ('2 GiB', 2 * 1024 ** 3)),
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(2, 'TiB', ('2 TiB', 2 * 1024 ** 4)),
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(2, 'PiB', ('2 PiB', 2 * 1024 ** 5)),
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(2, 'EiB', ('2 EiB', 2 * 1024 ** 6)),
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(2, 'ZiB', ('2 ZiB', 2 * 1024 ** 7)),
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(2, 'YiB', ('2 YiB', 2 * 1024 ** 8))):
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for glue in '', ' ':
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raw = glue.join(str(x) for x in (value, suffix))
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size = block_device.SizeUnit.new_by_string(raw)
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self.assertEqual(expect, (str(size), size.bytes))
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def test_fraction(self):
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size = block_device.SizeUnit.new_by_string('2.5 KiB')
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self.assertEqual(
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('2.5 KiB', 1024 * 2 + 512),
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(str(size), size.bytes))
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def test_in_unit(self):
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size = block_device.SizeUnit.new_by_string('2.2 YiB')
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for unit, expect in (
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('B', 2659636803152184399101952),
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('s', 5194603131156610154496),
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('KiB', 2597301565578305077248),
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('MiB', 2536427310135063552),
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('GiB', 2476979795053773),
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('TiB', 2418925581107.2),
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('PiB', 2362232012.8),
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('EiB', 2306867.2),
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('ZiB', 2252.8),
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('YiB', 2.2)):
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other = size.in_unit(unit)
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self.assertEqual(size.bytes, other.bytes)
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self.assertEqual(expect, other.value)
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def test_invalid_value(self):
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self.assertRaises(
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ValueError, block_device.SizeUnit.new_by_string, 'invalid')
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def test_invalid_value_with_defaults(self):
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self.assertRaises(
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ValueError, block_device.SizeUnit.new_by_string,
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'invalid', default_unit='KiB')
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def test_invalid_suffix(self):
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self.assertRaises(
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ValueError, block_device.SizeUnit.new_by_string, '2 unknown')
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def test_invalid_suffix_with_default(self):
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self.assertRaises(
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ValueError, block_device.SizeUnit.new_by_string,
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'2 unknown', default_unit='KiB')
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def test_default_unit(self):
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size = block_device.SizeUnit.new_by_string('4', default_unit='KiB')
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self.assertEqual(
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('4 KiB', 4 * 1024),
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(str(size), size.bytes))
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def test_ignore_default_unit(self):
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size = block_device.SizeUnit.new_by_string('4 B', default_unit='KiB')
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self.assertEqual(
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('4 B', 4),
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(str(size), size.bytes))
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def test_invalid_default_unit(self):
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self.assertRaises(
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ValueError,
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block_device.SizeUnit.new_by_string, '4', default_unit='unknown')
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class TestDisk(unittest2.TestCase):
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def test_disk_scan(self):
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expect = {
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'sample0': [
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(1, 2048, 51199, 0xEF02,
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'D1950C77-BD81-405B-99AF-997CCCF42C3A'),
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(2, 51200, 8243199, 0x0700,
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'FFBAB7FC-7E92-441B-9E0B-1E2BDCE2DF6F'),
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(3, 8243200, 12339199, 0x0700,
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'C45EBDFB-5C67-4035-A00C-624A5AD775B1'),
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(4, 12339200, 20326399, 0x0700,
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'E3147173-AD70-443E-8D07-9203C89CA0CC')],
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'sample1': [
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(1, 2048, 49999871, 0x8300,
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'70D0A7D8-FA3B-4FF0-922D-1DFDBF1072F2'),
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(3, 49999872, 99999743, 0x8300,
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'6B4A0679-831E-44C9-8500-90905960F797'),
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(5, 100001792, 120000511, 0x8200,
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'04003F45-3426-47EA-BAA0-0220F2CC6B6C'),
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(6, 120002560, 1936746495, 0x8300,
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'BC2B584B-4A02-47A3-ACA5-9764F6CC5A40'),
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(7, 1936748544, 1953523711, 0x8300,
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'28404402-736E-46D3-B623-F6F2868079B8')]}
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for sample, target in (
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('sample0', '/dev/vda'),
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('sample1', '/dev/sda')):
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with utils.BlockDeviceMock(sample):
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disk = block_device.Disk.new_by_scan(target)
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actual = [
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(s.payload.index, s.begin, s.end, s.payload.code,
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s.payload.guid)
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for s in disk.segments if s.kind == s.KIND_BUSY]
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self.assertEqual(expect[sample], actual)
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def test_allocate(self):
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accuracy = block_device.SizeUnit(0, 'B')
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with utils.BlockDeviceMock('empty-1024MiB'):
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# disk use alignment 2048 sectors
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disk = block_device.Disk.new_by_scan('/dev/loop0')
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disk.allocate_accuracy = accuracy
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for size, from_tail in (
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((2048 - 512) * sector, False),
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(2048 * 8 * sector, False),
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((2048 - 512) * sector, True),
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(2048 * 8 * sector, False),
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((2048 - 512) * sector, True)):
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disk.allocate(
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block_device.SizeUnit(size, 'B'), from_tail=from_tail)
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actual = [
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(s.begin, s.end, s.size)
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for s in disk.segments if s.kind == s.KIND_BUSY]
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expect = [
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(2048, 4095, 2048),
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(4096, 20479, 16384),
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(20480, 36863, 16384),
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(2093056, 2095103, 2048),
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(2095104, 2097118, 2015)]
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self.assertEqual(expect, actual)
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def test_allocate_no_space_left(self):
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with utils.BlockDeviceMock('empty-1024MiB'):
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disk = block_device.Disk.new_by_scan('/dev/loop0')
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self.assertRaises(
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errors.BlockDeviceAllocationError, disk.allocate,
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block_device.SizeUnit(1024, 'MiB'))
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