mirror of
https://github.com/retspen/webvirtcloud
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02412b7ea5
The delete ran in the request: undefine, then the VM's record, then its disk files. A request that died in between (a gunicorn worker past its timeout, OOM, a restart), or a database write that failed after the undefine, left a record that later showed as removed outside the panel, and the disk files the user asked to delete were never deleted. Deleting a VM is now an instance.delete job. It holds the compute exclusively, as the request did, so no other VM attaches a file it is about to delete. The job chooses the files before it stops the VM (a host that cannot be checked still stops nothing) and records them first. It then stops and undefines the VM, removes its record, and deletes the files, each with its own Logs row. Recovery decides from libvirt: a VM still on its host means the delete failed; a VM gone means libvirt did it, so recovery removes the record and deletes the recorded files that are still there. The page queues the job and returns to the VM page, where the job panel follows it and opens the VM list when it ends; disks that were kept are the result's warning. The API's delete answers 202 with the job and needs a submission_key. backing_path moves to wvmConnect, as recovery has no domain to ask.
342 lines
19 KiB
Python
342 lines
19 KiB
Python
"""Live checks for the instance jobs: the worker runs them against libvirt
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and recovery reads the same outcome back. Runs only with TEST_LIBVIRT_HOST
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set (see instances/tests/livetest.py). The migration needs a second host:
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TEST_LIBVIRT_SSH_HOST (and _LOGIN), with TEST_LIBVIRT_MIGRATE_ADDRESS as its
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migration address. The ISO upload runs on both hosts: TCP writes through a
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libvirt stream, SSH through SFTP."""
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import os
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import subprocess
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import time
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import unittest
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import libvirt
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from django.contrib.auth import get_user_model
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from django.core.files.uploadedfile import SimpleUploadedFile
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from django.test import TransactionTestCase
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from django.urls import reverse
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from vrtManager.connection import connection_manager, wvmConnect
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from vrtManager.instance import wvmInstance
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from appsettings.settings import get_settings
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from computes.models import Compute
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from instances.jobs import DeleteExternalSnapshot, DeleteInstance
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from instances.models import Instance
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from operations import jobs
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from operations.models import Operation
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from operations.tests import fakes
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from operations.worker import Worker
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from . import livetest
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P = livetest.PREFIX
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def wait_for(predicate, seconds):
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end = time.monotonic() + seconds
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while time.monotonic() < end:
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if predicate():
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return True
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time.sleep(0.5)
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return False
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class LiveJobsTestCase(TransactionTestCase):
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@classmethod
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def setUpClass(cls):
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if not livetest.enabled():
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raise unittest.SkipTest("Set TEST_LIBVIRT_HOST to run the live libvirt tests")
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cls.args = (
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os.environ["TEST_LIBVIRT_HOST"],
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os.environ.get("TEST_LIBVIRT_LOGIN", ""),
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os.environ.get("TEST_LIBVIRT_PASSWORD", ""),
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int(os.environ.get("TEST_LIBVIRT_TYPE", 4)),
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)
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cls.conn = connection_manager.get_connection(*cls.args)
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livetest.cleanup(cls.conn)
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livetest.ensure_pool(cls.conn)
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cls.inventory = livetest.inventory(cls.conn)
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super().setUpClass()
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@classmethod
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def tearDownClass(cls):
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try:
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livetest.remove_pool(cls.conn)
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finally:
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super().tearDownClass()
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if livetest.inventory(cls.conn) != cls.inventory:
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raise AssertionError("Live tests changed objects outside the test namespace")
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def setUp(self):
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get_settings()
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host, login, password, conn_type = self.args
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self.compute = Compute.objects.create(name=P + "compute", hostname=host, login=login, password=password,
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type=conn_type)
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self.admin = get_user_model().objects.create_superuser("job_live_admin", "a@example.com", "pw")
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def tearDown(self):
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livetest.cleanup(self.conn)
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def vm(self, name, state="stopped"):
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base = livetest.create_volume(self.conn, P + name)
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dom = livetest.define_vm(self.conn, P + name, [base])
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if state == "running":
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dom.create()
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return dom, wvmInstance(*self.args, None, uuid=dom.UUIDString())
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def test_the_worker_deletes_a_snapshot_and_recovery_agrees(self):
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dom, vm = self.vm("job-del", "running")
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vm.create_external_snapshot("one")
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instance = Instance.objects.create(compute=self.compute, name=dom.name(), uuid=dom.UUIDString())
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op = jobs.submit("snapshot.delete", self.admin, {"instance": instance.pk, "name": "one"}, "key-live0001")
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worker = Worker(concurrency=1, tick=0.1, heartbeat_every=1, progress_every=1, exit_on_lost_lease=False)
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thread = fakes.start_worker(worker)
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try:
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self.assertTrue(wait_for(lambda: Operation.objects.get(pk=op.pk).state == Operation.SUCCEEDED, 180))
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finally:
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fakes.stop_worker(worker, thread)
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self.assertEqual(dom.snapshotNum(0), 0)
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Operation.objects.filter(pk=op.pk).update(state=Operation.RUNNING)
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op.refresh_from_db()
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self.assertEqual(DeleteExternalSnapshot().reconcile(op).state, Operation.SUCCEEDED)
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def run_job(self, op):
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worker = Worker(concurrency=1, tick=0.1, heartbeat_every=1, progress_every=1, exit_on_lost_lease=False)
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thread = fakes.start_worker(worker)
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try:
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self.assertTrue(wait_for(lambda: Operation.objects.get(pk=op.pk).state in Operation.TERMINAL, 300))
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finally:
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fakes.stop_worker(worker, thread)
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op.refresh_from_db()
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self.assertEqual(op.state, Operation.SUCCEEDED, op.error)
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return op
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def test_the_worker_deletes_a_running_vm_with_its_disk_and_recovery_agrees(self):
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disk = livetest.create_volume(self.conn, P + "job-delete")
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dom = livetest.define_vm(self.conn, P + "job-delete", [disk])
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dom.create()
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instance = Instance.objects.create(compute=self.compute, name=dom.name(), uuid=dom.UUIDString())
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op = self.run_job(jobs.submit("instance.delete", self.admin, {"instance": instance.pk, "delete_disk": True},
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"key-delete01"))
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self.assertEqual(op.result, {"open": reverse("instances:index")})
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self.assertFalse(Instance.objects.filter(pk=instance.pk).exists())
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self.assertFalse(livetest.volume_exists(self.conn, disk))
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with self.assertRaises(libvirt.libvirtError):
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self.conn.lookupByUUIDString(op.intent["uuid"])
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# a worker that stopped after the undefine: recovery finds the work done
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Operation.objects.filter(pk=op.pk).update(state=Operation.RUNNING)
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op.refresh_from_db()
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self.assertEqual(DeleteInstance().reconcile(op).state, Operation.SUCCEEDED)
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def test_snapshot_create_and_revert_run_as_jobs(self):
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running, _vm = self.vm("smoke-ext", "running")
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stopped, _vm = self.vm("smoke-int")
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steps = ((running, "snapshot.create", {"name": "m", "external": True, "memory": True}),
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(running, "snapshot.create", {"name": "d", "external": True}),
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(running, "snapshot.revert", {"name": "m", "external": True}),
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(stopped, "snapshot.create", {"name": "i"}),
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(stopped, "snapshot.revert", {"name": "i"}))
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for n, (dom, kind, params) in enumerate(steps):
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instance = Instance.objects.get_or_create(compute=self.compute, name=dom.name(), uuid=dom.UUIDString())[0]
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self.run_job(jobs.submit(kind, self.admin, {"instance": instance.pk, **params}, f"key-snap{n:04d}"))
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self.assertEqual(running.snapshotCurrent(0).getName(), "m")
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self.assertTrue(running.isActive()) # a memory snapshot resumes the VM
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self.assertEqual(stopped.snapshotCurrent(0).getName(), "i")
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def test_clone_create_and_volume_clone_run_as_jobs(self):
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dom, _vm = self.vm("smoke-src")
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source = Instance.objects.create(compute=self.compute, name=dom.name(), uuid=dom.UUIDString())
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op = self.run_job(jobs.submit("instance.clone", self.admin, {
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"instance": source.pk, "name": P + "smoke-clone", "disk-vda": P + "smoke-clone.qcow2",
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"clone-net-mac-0": "52:54:00:00:31:01"}, "key-smoke001"))
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self.assertEqual(self.conn.lookupByUUIDString(op.intent["uuid"]).name(), P + "smoke-clone")
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self.run_job(jobs.submit("volume.clone", self.admin, {
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"compute": self.compute.pk, "pool": livetest.POOL, "image": P + "smoke-src.qcow2",
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"name": P + "smoke-copy"}, "key-smoke002"))
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self.assertTrue(livetest.volume_exists(self.conn, f"{livetest.POOL_PATH}/{P}smoke-copy.qcow2"))
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op = self.run_job(jobs.submit("instance.create", self.admin, {
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"name": P + "smoke-new", "firmware": "BIOS", "vcpu": 1, "vcpu_mode": "host-model", "memory": 256,
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"networks": "default", "storage": livetest.POOL, "template": P + "smoke-copy.qcow2", "images": "",
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"hdd_size": 0, "cache_mode": "none", "meta_prealloc": False, "virtio": True, "qemu_ga": False,
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"mac": "", "nwfilter": "", "net_model": "virtio", "add_cdrom": "None", "add_input": "default",
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"video": "vga", "listener_addr": "127.0.0.1", "compute": self.compute.pk, "arch": "x86_64",
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"machine": "q35"}, "key-smoke003"))
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self.assertEqual(self.conn.lookupByUUIDString(op.intent["uuid"]).name(), P + "smoke-new")
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def second_host(self):
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if not os.environ.get("TEST_LIBVIRT_SSH_HOST"):
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self.skipTest("Set TEST_LIBVIRT_SSH_HOST to a second host to run the live migration test")
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dest = Compute.objects.create(name=P + "dest", hostname=os.environ["TEST_LIBVIRT_SSH_HOST"],
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login=os.environ.get("TEST_LIBVIRT_SSH_LOGIN", "root"), password="", type=2,
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migration_address=os.environ.get("TEST_LIBVIRT_MIGRATE_ADDRESS", ""))
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dest_conn = connection_manager.get_connection(dest.hostname, dest.login, "", 2)
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dest_inventory = livetest.inventory(dest_conn)
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self.addCleanup(lambda: self.assertEqual(livetest.inventory(dest_conn), dest_inventory))
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self.addCleanup(livetest.cleanup, dest_conn)
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return dest, dest_conn
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def test_a_migration_runs_as_a_job_there_and_back(self):
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dest, dest_conn = self.second_host()
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dom = livetest.define_vm(self.conn, P + "migrate", [])
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dom.create()
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uuid = dom.UUIDString()
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instance = Instance.objects.create(compute=self.compute, name=dom.name(), uuid=uuid)
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live = {"instance": instance.pk, "target": dest.pk, "live": True, "autoconverge": True}
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self.run_job(jobs.submit("instance.migrate", self.admin, live, "key-mig00001"))
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self.assertTrue(dest_conn.lookupByUUIDString(uuid).isActive())
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dest_conn.lookupByUUIDString(uuid).destroy()
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offline = {"instance": instance.pk, "target": self.compute.pk, "offline": True}
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self.run_job(jobs.submit("instance.migrate", self.admin, offline, "key-mig00002"))
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self.assertFalse(self.conn.lookupByUUIDString(uuid).isActive()) # defined on the source again
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self.assertEqual(Instance.objects.get(uuid=uuid).compute, self.compute)
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def test_a_disk_neither_host_shares_is_copied_there_and_back(self):
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"""The test pool is a directory of each host's own: the disk is
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copied into it, running there with its source file deleted on
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request, shut off back (started paused for the copy) with it kept."""
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dest, dest_conn = self.second_host()
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self.addCleanup(livetest.remove_pool, dest_conn)
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livetest.ensure_pool(dest_conn)
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path = livetest.create_volume(self.conn, P + "copy")
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dom = livetest.define_vm(self.conn, P + "copy", [path])
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dom.create()
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uuid = dom.UUIDString()
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instance = Instance.objects.create(compute=self.compute, name=dom.name(), uuid=uuid)
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pools = {"vda": livetest.POOL}
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there = {"instance": instance.pk, "target": dest.pk, "live": True, "disk_pools": pools, "delete_source": True}
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self.run_job(jobs.submit("instance.migrate", self.admin, there, "key-copy0001"))
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self.assertTrue(dest_conn.lookupByUUIDString(uuid).isActive())
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self.assertEqual((livetest.volume_exists(self.conn, path), livetest.volume_exists(dest_conn, path)),
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(False, True))
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dest_conn.lookupByUUIDString(uuid).destroy()
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back = {"instance": instance.pk, "target": self.compute.pk, "offline": True, "disk_pools": pools}
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self.run_job(jobs.submit("instance.migrate", self.admin, back, "key-copy0002"))
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self.assertFalse(self.conn.lookupByUUIDString(uuid).isActive())
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self.assertEqual((livetest.volume_exists(self.conn, path), livetest.volume_exists(dest_conn, path)),
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(True, True))
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def test_a_disk_moves_to_another_pool_and_back(self):
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"""There while the VM runs (block copy and pivot), back shut off
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(volume copy); each time the source file goes."""
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other = self.conn.storagePoolDefineXML(
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f"<pool type='dir'><name>{P}move</name><target><path>{livetest.POOL_PATH}-move</path></target></pool>")
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other.create(libvirt.VIR_STORAGE_POOL_CREATE_WITH_BUILD)
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def remove_other():
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other.refresh(0)
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for vol in other.listAllVolumes():
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vol.delete(0)
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other.destroy()
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other.delete(0)
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other.undefine()
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self.addCleanup(remove_other)
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path = livetest.create_volume(self.conn, P + "move")
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dom = livetest.define_vm(self.conn, P + "move", [path])
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dom.create()
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instance = Instance.objects.create(compute=self.compute, name=dom.name(), uuid=dom.UUIDString())
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moved = f"{livetest.POOL_PATH}-move/{P}move.qcow2"
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def source(flags):
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return dom.XMLDesc(flags).split("<source file='")[1].split("'")[0]
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self.run_job(jobs.submit("disk.move", self.admin, {"instance": instance.pk, "dev": "vda", "pool": P + "move"},
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"key-move0001"))
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self.assertEqual((source(0), source(libvirt.VIR_DOMAIN_XML_INACTIVE)), (moved, moved))
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self.assertFalse(livetest.volume_exists(self.conn, path)) # no host uses the source file: it went
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dom.destroy()
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self.run_job(jobs.submit("disk.move", self.admin, {"instance": instance.pk, "dev": "vda", "pool": livetest.POOL},
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"key-move0002"))
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self.assertEqual(source(libvirt.VIR_DOMAIN_XML_INACTIVE), path)
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def test_a_shut_off_uefi_vm_migrates_with_its_nvram_there_and_back(self):
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dest, _dest_conn = self.second_host()
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hosts = {self.compute.pk: wvmConnect(*self.args), dest.pk: wvmConnect(dest.hostname, dest.login, "", 2)}
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dom = livetest.define_vm(self.conn, P + "uefi", [], uefi=True)
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dom.createWithFlags(libvirt.VIR_DOMAIN_START_PAUSED) # libvirt makes the NVRAM file
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dom.destroy()
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name = os.path.basename(wvmInstance(*self.args, None, uuid=dom.UUIDString()).get_nvram())
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def nvram(compute):
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host = hosts[compute.pk]
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with host._nvram_pool() as pool:
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vol = host._find_volume(pool, name)
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if vol is None:
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return None
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stream, chunks = host.wvm.newStream(0), []
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vol.download(stream, 0, 0, 0)
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stream.recvAll(lambda _stream, data, out: out.append(data), chunks)
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stream.finish()
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return b"".join(chunks)
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content = nvram(self.compute)
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instance = Instance.objects.create(compute=self.compute, name=dom.name(), uuid=dom.UUIDString())
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for n, (source, target) in enumerate(((self.compute, dest), (dest, self.compute))):
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offline = {"instance": instance.pk, "target": target.pk, "offline": True}
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self.run_job(jobs.submit("instance.migrate", self.admin, offline, f"key-uefi{n:04d}"))
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self.assertEqual(nvram(target), content)
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self.assertIsNone(nvram(source))
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def test_a_shut_off_vm_with_tpm_state_migrates_with_it_there_and_back(self):
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dest, dest_conn = self.second_host()
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tpm = "<tpm model='tpm-crb'><backend type='emulator' version='2.0'/></tpm>"
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# UEFI with a TPM, as a Windows 11 VM: its NVRAM file is copied, its TPM state migrated
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dom = livetest.define_vm(self.conn, P + "tpm", [], uefi=True, extra_devices=tpm)
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dom.createWithFlags(libvirt.VIR_DOMAIN_START_PAUSED) # swtpm makes the state
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dom.destroy()
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uuid = dom.UUIDString()
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def state_on_dest():
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"""The checksum of the TPM state file on the destination (an SSH host, as root)."""
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path = f"/var/lib/libvirt/swtpm/{uuid}/tpm2/tpm2-00.permall"
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return subprocess.run(["ssh", "-o", "BatchMode=yes", "-l", dest.login, dest.hostname,
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f"sha256sum {path} 2>/dev/null"], capture_output=True, text=True).stdout.split()[:1]
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instance = Instance.objects.create(compute=self.compute, name=dom.name(), uuid=uuid)
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sums = []
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for n, target in enumerate((dest, self.compute, dest)):
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offline = {"instance": instance.pk, "target": target.pk, "offline": True}
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self.run_job(jobs.submit("instance.migrate", self.admin, offline, f"key-tpm{n:05d}"))
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sums.append(state_on_dest())
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self.assertFalse(dest_conn.lookupByUUIDString(uuid).isActive()) # shut off again after the move
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# the same state went there, back and there again; none stays behind
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self.assertTrue(sums[0])
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self.assertEqual((sums[1], sums[2]), ([], sums[0]))
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def upload(self, compute, key, chunks):
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"""Post chunks of a two-chunk ISO upload to the storage view; returns the job."""
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self.client.force_login(self.admin)
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url = reverse("storage", args=[compute.pk, livetest.POOL])
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name = P + "upload.iso"
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for index in chunks:
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answer = self.client.post(url, {
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"iso_upload": "1", "file": SimpleUploadedFile(name, b"%d" % index * 4096), "file_name": name,
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"chunk_index": str(index), "total_chunks": "2", "file_size": str(2 * 4096), "upload_id": key})
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self.assertEqual(answer.status_code, 200, answer.content)
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return Operation.objects.get(pk=answer.json()["job"])
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def pool_volumes(self, conn):
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pool = conn.storagePoolLookupByName(livetest.POOL)
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pool.refresh(0)
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return set(pool.listVolumes())
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def test_an_iso_upload_runs_as_a_job(self):
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hosts = [(self.compute, self.conn)]
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if os.environ.get("TEST_LIBVIRT_SSH_HOST"):
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ssh = Compute.objects.create(name=P + "ssh", hostname=os.environ["TEST_LIBVIRT_SSH_HOST"],
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login=os.environ.get("TEST_LIBVIRT_SSH_LOGIN", "root"), password="", type=2)
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ssh_conn = connection_manager.get_connection(ssh.hostname, ssh.login, "", 2)
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ssh_inventory = livetest.inventory(ssh_conn)
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self.addCleanup(lambda: self.assertEqual(livetest.inventory(ssh_conn), ssh_inventory))
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self.addCleanup(livetest.remove_pool, ssh_conn)
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livetest.ensure_pool(ssh_conn)
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hosts.append((ssh, ssh_conn))
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for n, (compute, conn) in enumerate(hosts):
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with self.subTest(host=compute.name):
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op = self.upload(compute, f"live-upload-{n}", (0, 1))
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self.assertEqual(op.state, Operation.SUCCEEDED, op.error)
|
|
self.assertEqual(self.pool_volumes(conn), {P + "upload.iso"})
|
|
conn.storagePoolLookupByName(livetest.POOL).storageVolLookupByName(P + "upload.iso").delete(0)
|
|
op = self.upload(compute, f"live-cancel-{n}", (0,))
|
|
self.assertTrue(self.pool_volumes(conn)) # the volume, or the SSH part file
|
|
self.assertEqual(jobs.cancel(op.pk, self.admin).state, Operation.CANCELLED)
|
|
self.assertEqual(self.pool_volumes(conn), set())
|