198 lines
8.7 KiB
Python
198 lines
8.7 KiB
Python
# Copyright 2020 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 testtools
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from oslo_log import log as logging
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from tempest import config
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from whitebox_tempest_plugin.api.compute import base
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CONF = config.CONF
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LOG = logging.getLogger(__name__)
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class VirtioSCSIDisk(base.BaseWhiteboxComputeTest):
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# NOTE: The class variable disk_to_create is specifically set to seven in
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# order to validate Nova bug 1686116 beyond six disks, minimum number of
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# disks present on a VM should be greater than six for tests to function
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# appropriately
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disks_to_create = 7
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def setUp(self):
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super(VirtioSCSIDisk, self).setUp()
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# NOTE: Flavor and image are common amongst every test of the class
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# so setting them once in setUP method.
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self.flavor = self.create_flavor()
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self.img_id = self.copy_default_image(hw_scsi_model='virtio-scsi',
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hw_disk_bus='scsi')
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def get_attached_disks(self, server_id):
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"""Returns all disk devices attached to the server
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:param server_id: the uuid of the instance as a str
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:return disks: a list of xml elements, the elements are all disks
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in the devices section of the server's xml
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"""
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root = self.get_server_xml(server_id)
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disks = root.findall("./devices/disk")
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return disks
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def get_scsi_disks(self, server_id, controller_index):
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"""Returns all scsi disks attached to a specific disk controller
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for the server
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:param server_id: the uuid of the instance as a str
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:controller_index: the disk controller index to search
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:return scsi_disks: a list of xml elements, the elements are all scsi
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disks managed by the provided controller_index parameter
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"""
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all_disks = self.get_attached_disks(server_id)
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scsi_disks = [disk for disk in all_disks
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if disk.find("target[@bus='scsi']") is not None and
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disk.find("address[@controller="
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"'%s']" % controller_index) is not None]
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return scsi_disks
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def get_scsi_disk_controllers(self, server_id):
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"""Returns all scsi disk controllers for the server
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:param server_id: the uuid of the instance as a str
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:return disk_cntrls: a list of xml elements, the elements are all
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scsi disk controllers found in the devices section of the server
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xml
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"""
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root = self.get_server_xml(server_id)
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disk_cntrls = root.findall("./devices/controller[@type='scsi']"
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"[@model='virtio-scsi']")
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return disk_cntrls
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def get_created_vol_ids(self):
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"""Get the ids of every volume created for the test
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:return vol_ids: a list of str's comprised of all volume id's that are
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currently tracked by the volumes client
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"""
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vol_ids = [vol['id'] for vol in
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self.volumes_client.list_volumes()['volumes']]
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return vol_ids
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def get_all_serial_ids(self, disks):
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"""Create a list of serial ids from a list of disks
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:param disks, a list of xml elements, each element should be the xml
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representation of a disk
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return serial_ids: a list of str's comprised of every serial id found
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from the provided list of xml described disks
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"""
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serial_ids = [disk.find('serial').text for disk in disks
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if getattr(disk.find('serial'), 'text', None) is not
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None]
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return serial_ids
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@testtools.skipUnless(CONF.whitebox.available_cinder_storage > 8,
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'Need at least 8GB of storage to execute')
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def test_boot_with_multiple_disks(self):
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"""Using block device mapping, boot an instance with more than six
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volumes. Total volume count is determined by class variable
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disks_to_create. Server should boot correctly and should only have
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one disk controller with seven or more disks present in xml.
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"""
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bdms = []
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for i in range(self.disks_to_create):
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boot_dict = {}
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if i == 0:
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boot_dict['uuid'] = self.img_id
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boot_dict['source_type'] = 'image'
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else:
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boot_dict['source_type'] = 'blank'
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boot_dict.update({'destination_type': 'volume',
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'volume_size': 1,
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'boot_index': i,
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'disk_bus': 'scsi',
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'delete_on_termination': True})
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bdms.append(boot_dict)
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# Provide an image_id of '' so we don't use the default
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# compute image ref here and force n-api to fetch the
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# image_meta from the BDMs.
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server = self.create_test_server(flavor=self.flavor['id'],
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block_device_mapping_v2=bdms,
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image_id='')
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disk_ctrl = self.get_scsi_disk_controllers(server_id=server['id'])
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self.assertEqual(len(disk_ctrl), 1,
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"One and only one SCSI Disk controller should have "
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"been created but instead "
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"found: {} controllers".format(len(disk_ctrl)))
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controller_index = disk_ctrl[0].attrib['index']
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scsi_disks = self.get_scsi_disks(server_id=server['id'],
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controller_index=controller_index)
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self.assertEqual(len(scsi_disks),
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self.disks_to_create,
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"Expected {} scsi disks on the domain but "
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"found {}".format(self.disks_to_create,
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len(scsi_disks)))
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vol_ids = self.get_created_vol_ids()
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serial_ids = self.get_all_serial_ids(scsi_disks)
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self.assertItemsEqual(vol_ids,
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serial_ids,
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"Created vol ids do not align with serial ids "
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"found on the domain")
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@testtools.skipUnless(CONF.whitebox.available_cinder_storage > 8,
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'Need at least 9GB of storage to execute')
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def test_attach_multiple_scsi_disks(self):
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"""After booting an instance from an image with virtio-scsi properties
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attach multiple additional virtio-scsi disks to the point that the
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instance has more than six disks attached to a single controller.
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Validate that all volumes attach correctly to the instance.
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"""
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server = self.create_test_server(flavor=self.flavor['id'],
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image_id=self.img_id)
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vol_ids = []
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# A virtio-scsi disk has already been attached to the server's disk
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# controller since hw_scsi_model of the image was already set to
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# 'virtio-scsi' in self.setUp(). Decrementing disks_to_create by 1.
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for _ in range(self.disks_to_create - 1):
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volume = self.create_volume()
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vol_ids.append(volume['id'])
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self.addCleanup(self.delete_volume, volume['id'])
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self.attach_volume(server, volume)
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disk_ctrl = self.get_scsi_disk_controllers(server_id=server['id'])
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self.assertEqual(len(disk_ctrl), 1,
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"One and only one SCSI Disk controller should have "
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"been created but instead "
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"found: {} controllers".format(len(disk_ctrl)))
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cntrl_index = disk_ctrl[0].attrib['index']
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scsi_disks = self.get_scsi_disks(server_id=server['id'],
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controller_index=cntrl_index)
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self.assertEqual(len(scsi_disks),
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self.disks_to_create,
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"Expected {} disks but only "
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"found {}".format(self.disks_to_create,
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len(scsi_disks)))
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serial_ids = self.get_all_serial_ids(scsi_disks)
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self.assertItemsEqual(vol_ids,
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serial_ids,
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"Created vol ids do not align with serial ids "
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"found on the domain")
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