mirror of
https://github.com/retspen/webvirtcloud
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11fe2409f9
A volume of an LVM or iSCSI pool can be attached: by its own path, with the format its volume reports (raw when the pool knows none). Detaching a disk takes each definition's own description of it, so a disk only in the persistent definition goes too. Every NIC type can be a boot device; bridge and direct NICs were dropped from the boot order. The video model is a value, never parsed as XML. QoS changes clear the page's read cache. The NIC model "default" leaves the choice to libvirt instead of writing model "default", and rt18139 is rtl8139: a VM with either did not start (checked on a RHEL 10 host). A migration corrects the default NIC type setting.
110 lines
4.6 KiB
Python
110 lines
4.6 KiB
Python
"""Device edits of a VM: each definition is changed as it describes the
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device, every NIC type can be a boot device, posted values stay values, and
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definition changes go through _defineXML."""
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import unittest
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from unittest.mock import MagicMock
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from django.conf import settings
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if not settings.configured:
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settings.configure(MAC_OUI="52:54:10")
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from lxml import etree
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from vrtManager import util
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from vrtManager.instance import PERSISTENT_XML, wvmInstance
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from libvirt import VIR_DOMAIN_AFFECT_CONFIG, VIR_DOMAIN_AFFECT_LIVE, VIR_DOMAIN_XML_SECURE
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PERSISTENT = """<domain><os><type>hvm</type></os><devices>
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<disk type='file' device='disk'><source file='/pool/a.qcow2'/><target dev='vda' bus='virtio'/></disk>
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<disk type='file' device='disk'><source file='/pool/b.qcow2'/><target dev='vdb' bus='virtio'/></disk>
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<interface type='bridge'><mac address='52:54:10:00:00:02'/><source bridge='br0'/></interface>
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<interface type='network'><mac address='52:54:10:00:00:01'/><source network='default'/>
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<bandwidth><inbound average='1' peak='2' burst='3'/></bandwidth></interface>
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<video><model type='vga'/></video>
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</devices></domain>"""
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LIVE = """<domain><devices>
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<disk type='file' device='disk'><source file='/pool/a.qcow2'/><target dev='vda' bus='virtio'/><alias name='virtio-disk0'/></disk>
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</devices></domain>"""
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def proxy(active=True):
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p = wvmInstance.__new__(wvmInstance) # no connection: only these calls
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p.instance = MagicMock(**{"isActive.return_value": active})
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p._XMLDesc = lambda flags: PERSISTENT if flags == PERSISTENT_XML else LIVE
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p._defineXML = MagicMock()
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p.wvm = MagicMock()
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return p
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def defined(p):
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(xml,), _ = p._defineXML.call_args
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return etree.fromstring(xml)
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class DetachDiskTestCase(unittest.TestCase):
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def test_each_definition_is_detached_as_it_describes_the_disk(self):
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p = proxy()
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p.detach_disk("vda")
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(live, live_flags), (config, config_flags) = (c.args for c in p.instance.detachDeviceFlags.call_args_list)
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self.assertEqual((live_flags, config_flags), (VIR_DOMAIN_AFFECT_LIVE, VIR_DOMAIN_AFFECT_CONFIG))
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self.assertIn("virtio-disk0", live)
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self.assertNotIn("alias", config)
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def test_a_disk_only_in_the_persistent_definition_is_detached_there(self):
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p = proxy()
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p.detach_disk("vdb")
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self.assertEqual([c.args[1] for c in p.instance.detachDeviceFlags.call_args_list], [VIR_DOMAIN_AFFECT_CONFIG])
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def test_an_unknown_disk_is_refused(self):
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p = proxy()
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with self.assertRaises(util.OperationError):
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p.detach_disk("vdz")
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p.instance.detachDeviceFlags.assert_not_called()
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class DeviceEditsTestCase(unittest.TestCase):
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def test_a_block_volume_is_attached_by_its_device_path(self):
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p = proxy(active=False)
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p._definitions = lambda: [(PERSISTENT_XML, VIR_DOMAIN_AFFECT_CONFIG)]
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p.attach_disk("vdc", "/dev/vg/c", disk_type="block", target_bus="virtio")
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xml, _ = p.instance.attachDeviceFlags.call_args.args
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self.assertEqual(etree.fromstring(xml).find("source").attrib, {"dev": "/dev/vg/c"})
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def test_a_bridge_nic_can_be_a_boot_device(self):
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p = proxy()
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p.set_bootorder({0: {"type": "network", "dev": "52:54:10:00:00:02"}, 1: {"type": "disk", "dev": "vdb"}})
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tree = defined(p)
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self.assertEqual(tree.xpath("devices/interface[@type='bridge']/boot/@order"), ["1"])
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self.assertEqual(tree.xpath("devices/disk[target/@dev='vdb']/boot/@order"), ["2"])
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def test_the_video_model_is_a_value(self):
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p = proxy()
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p.set_video_model("vga' heads='9")
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model = defined(p).find("devices/video/model")
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self.assertEqual(model.attrib, {"type": "vga' heads='9"})
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p._defineXML.assert_called_once()
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def test_qos_changes_go_through_define_xml(self):
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for change in (
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lambda p: p.set_qos("52:54:10:00:00:01", "outbound", 1, 2, 3),
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lambda p: p.unset_qos("52:54:10:00:00:01", "inbound"),
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):
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p = proxy()
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change(p)
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p._defineXML.assert_called_once()
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p.wvm.defineXML.assert_not_called()
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def test_the_default_nic_model_leaves_the_choice_to_libvirt(self):
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p = proxy()
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p.change_network("52:54:10:00:00:01", "52:54:10:00:00:01", "default", "net", "default", "")
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self.assertIsNone(defined(p).find("devices/interface[@type='network']/model"))
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p = proxy(active=False)
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p.add_network("52:54:10:00:00:09", "default", model="default")
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xml, _ = p.instance.attachDeviceFlags.call_args.args
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self.assertIsNone(etree.fromstring(xml).find("model"))
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if __name__ == "__main__":
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unittest.main()
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