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https://github.com/retspen/webvirtcloud
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400ba1614f
Settings > Clone was a horizontal form with unlabelled checkboxes. The owner chose this layout from three rendered options: the clone's name on top, a "Network" card with a new MAC address per NIC, a "Storage" card with a new volume name per disk, then the optional title and description and a footer with Clone. Codex reviewed cloning end to end; these are fixed: - Every NIC of the clone gets a new random MAC when the form opens. Only the first did, so a VM with two NICs gave its clone the second NIC's MAC. Guess MAC is offered for the first NIC only: a name's DHCP host entry holds one address. - A VM without a NIC can be cloned: the first NIC's MAC was required. - The disk name script uses the persistent disks, as the form does; a disk added pending the next start kept the source's volume name. - A running or paused VM is not cloned while a copied disk changes at the next start: the backup copies the running disk, so the clone would get the old contents under the new definition. - A derived volume name that does not start with the source's name now starts with the clone's name and the disk's device, so a second clone or a second disk does not take the same name. - Guess for the clone name says when the DHCP file has no free name; it stopped with a script error. - The qcow2 metadata preallocation box shows only for a shut-off VM: a live clone's backup ignores it. Other users no longer get hidden MAC and disk inputs or the scripts that filled them: the server derives those values and ignored the posted ones.
203 lines
14 KiB
Python
203 lines
14 KiB
Python
"""On an active VM an edit changes the persistent definition and is pending
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until the next start. The edit forms show that definition, so a save does
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not post the running VM's value back over a pending change."""
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from unittest.mock import PropertyMock, patch
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from computes.models import Compute
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from django.contrib.auth import get_user_model
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from django.contrib.messages import get_messages
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from django.test import TestCase
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from django.urls import reverse
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from instances.models import Instance
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from lxml import html
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from vrtManager import util
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def disk(dev, cache, serial):
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return {
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"dev": dev, "bus": "virtio", "image": f"{dev}.qcow2", "storage": "default", "path": f"/pool/{dev}.qcow2",
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"format": "qcow2", "backing_file": None, "size": 1 << 30, "used": 1 << 20, "cache": cache, "io": "default",
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"discard": "default", "detect_zeroes": "default", "readonly": False, "shareable": False, "serial": serial,
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}
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class PendingEditsTestCase(TestCase):
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def setUp(self):
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self.client.force_login(get_user_model().objects.create_superuser("pe-admin", "pe@example.com", "x"))
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compute = Compute.objects.create(name="pe", hostname="127.0.0.1:1", login="root", password="", type=1)
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self.instance = Instance.objects.create(compute=compute, name="pe-vm", uuid="aaaaaaaa-1111-2222-3333-444444444444")
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def page(self, live=(), config=(), nics=((), ()), status=1, **getters):
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"""live and config: disks; nics and getters (get_vcpu=(2, 4)): values of
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the live and the persistent definition."""
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with patch("instances.models.wvmInstance") as wvm, patch.object(
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Compute, "status", new_callable=PropertyMock, return_value=True
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):
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proxy = wvm.return_value
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proxy.get_status.return_value = status
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proxy.get_memory.return_value = proxy.get_cur_memory.return_value = 1024
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proxy.get_max_memory.return_value = 4096
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getters = {"get_vcpu": (1, 1), "get_cur_vcpu": (1, 1), "get_title": ("", ""),
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"get_description": ("", ""), **getters}
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for getter, values in getters.items():
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getattr(proxy, getter).side_effect = lambda config=False, values=values: values[config]
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proxy.get_max_cpus.return_value = [1, 2, 3, 4]
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proxy.get_vcpus.return_value = {}
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for getter in ("get_networks", "get_ifaces", "get_storages", "get_media_devices",
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"get_snapshot", "get_snapshot_jobs"):
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getattr(proxy, getter).return_value = []
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proxy.get_hostdevs.return_value = ([], [], [])
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proxy.get_disk_devices.side_effect = lambda **kw: config if kw.get("config") else live
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proxy.get_net_devices.side_effect = lambda config=False: [dict(nic) for nic in nics[config]]
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proxy.get_console_type.return_value = "vnc"
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proxy.get_video_models.return_value = ["vga", "virtio"]
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proxy.get_cache_modes.return_value = {"default": "Default", "none": "Disabled"}
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response = self.client.get(reverse("instances:instance", args=[self.instance.id]))
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self.assertEqual(response.status_code, 200)
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return html.fromstring(response.content)
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def test_the_disk_edit_form_shows_the_pending_definition(self):
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# running: cache=none and a new disk vdb pending, vda's serial live only
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doc = self.page(
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live=[disk("vda", "default", "live-serial")],
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config=[disk("vda", "none", ""), disk("vdb", "default", "")],
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)
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forms = doc.xpath("//form[@action=$a]", a=reverse("instances:edit_volume", args=[self.instance.id]))
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self.assertEqual([f.xpath("string(.//input[@name='dev']/@value)") for f in forms], ["vda", "vdb"])
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vda = forms[0]
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self.assertEqual(vda.xpath(".//select[@name='vol_cache']/option[@selected]/@value"), ["none"])
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self.assertEqual(vda.xpath("string(.//input[@name='vol_serial']/@value)"), "")
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def test_the_qos_form_shows_the_pending_definition(self):
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nic = {"type": "network", "mac": "52:54:10:00:00:01", "nic": "default", "state": "up", "model": "virtio",
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"ipv4": None, "ipv6": None, "filterref": "", "target": "vnet0", "outbound": [],
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"inbound": {"average": "500", "peak": "0", "burst": "0"}}
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pending = {**nic, "inbound": {"average": "1000", "peak": "0", "burst": "0"}, "outbound": nic["inbound"]}
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doc = self.page(nics=([nic], [pending]))
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# the pending inbound value, and the pending outbound limit has a form
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self.assertEqual(doc.xpath("//input[@name='qos_average']/@value"), ["1000", "500"])
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self.assertEqual(doc.xpath("//form[.//input[@name='qos_average']]//input[@name='qos_direction']/@value"),
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["inbound", "outbound"])
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def test_one_nic_card_spans_the_row_and_more_sit_side_by_side(self):
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nic = {"type": "network", "mac": "52:54:10:00:00:01", "nic": "default", "state": "up", "model": "virtio",
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"ipv4": None, "ipv6": None, "filterref": "", "target": "", "inbound": [], "outbound": []}
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second = {**nic, "mac": "52:54:10:00:00:02"}
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for nics, wide in (([nic], ["col-12"]), ([nic, second], ["col-12 col-md-6"] * 2)):
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with self.subTest(count=len(nics)):
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doc = self.page(nics=(nics, nics))
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self.assertEqual(doc.xpath("//div[@id='network']//div[article]/@class"), wide)
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def test_one_disk_card_spans_the_row_and_more_sit_side_by_side(self):
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for disks, wide in (([disk("vda", "default", "")], ["col-12"]),
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([disk("vda", "default", ""), disk("vdb", "default", "")], ["col-12 col-md-6"] * 2)):
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with self.subTest(count=len(disks)):
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doc = self.page(live=disks, config=disks)
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self.assertEqual(doc.xpath("//div[@id='disks']//div[article[starts-with(@aria-labelledby, 'disk-')]]/@class"),
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wide)
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def test_the_clone_form_lists_the_persistent_devices(self):
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nic = {"type": "network", "mac": "52:54:10:00:00:01", "nic": "default", "state": "up", "model": "virtio",
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"ipv4": None, "ipv6": None, "filterref": "", "target": "", "inbound": [], "outbound": []}
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nics = [nic, {**nic, "mac": "52:54:10:00:00:02"}]
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for status, metadata in ((1, []), (5, ["meta-vda", "meta-vdb"])):
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with self.subTest(status=status):
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# running: vdb is pending the next start
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doc = self.page(live=[disk("vda", "default", "")], config=[disk("vda", "default", ""), disk("vdb", "default", "")],
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nics=([nic], nics), status=status)
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(form,) = doc.xpath("//form[@action=$a]", a=reverse("instances:clone", args=[self.instance.id]))
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self.assertEqual(form.xpath(".//input[@type='text']/@name"),
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["name", "clone-net-mac-0", "clone-net-mac-1", "disk-vda", "disk-vdb", "clone-title"])
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# the DHCP entry of the clone's name holds one address: only the first NIC guesses it
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self.assertEqual(len(form.xpath(".//button[contains(@onclick, 'guess_mac_address')]")), 1)
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# a running or paused VM is copied by a backup, which does not preallocate
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self.assertEqual(form.xpath(".//input[@type='checkbox']/@name"), metadata)
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def test_a_disk_with_a_pending_source_is_not_deleted(self):
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# running: vda is A, its definition for the next start uses B
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with patch("instances.models.wvmInstance") as wvm, patch("instances.views.wvmStorage") as storage:
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proxy = wvm.return_value
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live, pending = disk("vda", "default", ""), {**disk("vda", "default", ""), "path": "/pool/b.qcow2"}
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proxy.get_disk_devices.side_effect = lambda **kw: [pending] if kw.get("config") else [live]
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self.client.post(reverse("instances:delete_vol", args=[self.instance.id]), {"dev": "vda"})
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proxy.detach_disk.assert_not_called()
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storage.return_value.del_volume.assert_not_called()
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def test_the_options_and_cpu_forms_show_the_pending_definition(self):
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doc = self.page(get_vcpu=(2, 4), get_cur_vcpu=(1, 3), get_title=("old", "new"),
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get_description=("live text", "pending text"))
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self.assertEqual(doc.xpath("//input[@name='title']/@value"), ["new"])
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self.assertEqual(doc.xpath("//textarea[@name='description']/text()"), ["pending text"])
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self.assertEqual(doc.xpath("//select[@name='vcpu']/option[@selected]/@value"), ["4"])
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self.assertEqual(doc.xpath("//select[@name='cur_vcpu']/option[@selected]/@value"), ["3"])
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def test_buttons_shown_as_disabled_cannot_submit(self):
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# running: the CPU, options and video forms wait for a shutdown
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doc = self.page(live=[disk("vda", "default", "")], config=[disk("vda", "default", "")])
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self.assertGreater(len(doc.xpath("//button[@disabled]")), 5)
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shown = doc.xpath("//button[contains(concat(' ', @class, ' '), ' disabled ')]")
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self.assertEqual([b for b in shown if b.get("disabled") is None], [])
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for action in ("resizevm_cpu", "change_options", "set_video_model", "detach_vol", "delete_vol"):
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with self.subTest(action):
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(form,) = doc.xpath("//form[@action=$a]", a=reverse(f"instances:{action}", args=[self.instance.id]))
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self.assertTrue(all(b.get("disabled") is not None for b in form.xpath(".//button")))
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def test_the_xml_editor_shows_the_definition_for_the_next_start(self):
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# static/js/xml_editor.js opens the review dialog on Change, also while the VM runs
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for status in (5, 1):
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with self.subTest(status=status):
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doc = self.page(status=status)
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(button,) = doc.xpath("//form[@id='xml-form']//button[@type='submit']")
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self.assertIsNone(button.get("disabled"))
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self.assertEqual(len(doc.xpath("//div[@id='xml-review']//button[@id='xml-review-save']")), 1)
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self.assertEqual(bool(doc.xpath("//p[@id='xml-next-start']")), status != 5)
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def test_the_boot_video_and_console_forms_show_the_pending_definition(self):
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cd = {"dev": "sda", "image": "pending.iso", "storage": "default", "path": "/pool/pending.iso", "bus": "sata"}
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with patch("instances.models.Instance.config_networks", new_callable=PropertyMock, return_value=[]):
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doc = self.page(
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live=[disk("vda", "default", "")], config=[disk("vda", "default", ""), disk("vdb", "default", "")],
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get_bootmenu=(False, True), get_bootorder=({}, {0: {"type": "file", "dev": "cdrom", "target": "sda"}}),
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get_media_devices=([], [cd]), get_video_model=("vga", "virtio"),
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get_console_listener_addr=("127.0.0.1", "0.0.0.0"), get_console_keymap=("", "de"),
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get_console_passwd=("live-pw", "pending-pw"),
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)
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(boot,) = doc.xpath("//form[@action=$a]", a=reverse("instances:set_bootorder", args=[self.instance.id]))
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# the devices in the order first, checked
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self.assertEqual(boot.xpath(".//input[@type='checkbox']/@value"), ["cdrom:sda", "disk:vda", "disk:vdb"])
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self.assertEqual(boot.xpath(".//input[@checked]/@value"), ["cdrom:sda"])
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# the pending boot menu is on: its switch turns it off, also while the VM runs
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self.assertEqual(doc.xpath("//input[@id='bootmenu']/ancestor::form/@action"),
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[reverse("instances:unset_bootmenu", args=[self.instance.id])])
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self.assertEqual(doc.xpath("//select[@name='video_model']/option[@selected]/@value"), ["virtio"])
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self.assertEqual(doc.xpath("//select[@name='keymap']/option[@selected]/@value"), ["de"])
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self.assertEqual(doc.xpath("//select[@name='listen_on']/option[@selected]/@value"), ["0.0.0.0"])
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# the pending password is not shown, only that one is set
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self.assertEqual(doc.xpath("//input[@name='password']/@value"), [])
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self.assertIn("A password is set.", doc.xpath("string(//div[@id='vncsettings']//fieldset)"))
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def test_a_boot_order_by_device_type_is_named_and_no_device_is_checked(self):
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doc = self.page(live=[disk("vda", "default", "")], config=[disk("vda", "default", "")],
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get_bootorder=({}, {0: {"type": "file", "dev": "hd", "target": "disk"},
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1: {"type": "file", "dev": "cdrom", "target": "cdrom"}}))
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self.assertIn("disk, cdrom.", " ".join(doc.xpath("string(//p[@id='boot-by-type'])").split()))
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self.assertEqual(doc.xpath("//div[@id='b_order']//input[@checked]"), [])
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def test_a_boot_order_choice_not_in_the_definition_is_refused(self):
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with patch("instances.models.wvmInstance") as wvm:
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wvm.return_value.set_bootorder.side_effect = util.OperationError("Boot device vdz is not in the definition")
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response = self.client.post(reverse("instances:set_bootorder", args=[self.instance.id]),
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{"bootorder": "disk:vda,disk:vdz"})
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self.assertEqual([str(m) for m in get_messages(response.wsgi_request)], ["Boot device vdz is not in the definition"])
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def test_an_empty_boot_order_is_refused(self):
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with patch("instances.models.wvmInstance") as wvm:
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response = self.client.post(reverse("instances:set_bootorder", args=[self.instance.id]), {"bootorder": ""})
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wvm.return_value.set_bootorder.assert_not_called()
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self.assertEqual([str(m) for m in get_messages(response.wsgi_request)], ["Check at least one device to boot from."])
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def test_an_active_vm_says_its_settings_apply_at_the_next_start(self):
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for status, shown in ((1, True), (3, True), (5, False)):
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with self.subTest(status=status):
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self.assertEqual(bool(self.page(status=status).xpath("//p[@id='next-start-note']")), shown)
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