mirror of
https://github.com/retspen/webvirtcloud
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5f8f7a8643
A disk-only snapshot was taken without any space check, though its overlays grow as the guest writes and a later delete merges them down; a full pool pauses the guest and can leave the snapshot undeletable. Only a memory snapshot was checked, for the memory alone. Before a snapshot, each storage pool with a disk of the VM must have free a share of those disks' virtual size (10%, at least 1 GiB), and the pool of the memory file the VM's memory on top. Both values are on the Settings page (Snapshot Free Percent, Snapshot Free Min GiB; 0 turns a rule off, an invalid value keeps the default). The pools are refreshed first, and a failed refresh or an unreadable volume refuses the snapshot instead of skipping the check; a disk in no pool is not checked. Nothing is reserved: later writes can still fill a pool.
53 lines
2.5 KiB
Python
53 lines
2.5 KiB
Python
"""The default settings rows of the first migrations carry fixed ids, which a
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PostgreSQL id sequence does not see. A later migration that inserts without
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an id must not collide with them."""
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import importlib
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import unittest
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from types import SimpleNamespace
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from django.apps import apps
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from django.db import connection
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from django.test import TestCase, TransactionTestCase
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from appsettings.models import AppSettings
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login_lockout = importlib.import_module("appsettings.migrations.0014_login_lockout_settings")
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@unittest.skipUnless(connection.vendor == "postgresql", "id sequences are a PostgreSQL concern")
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class SequenceAfterFixedIdsTestCase(TransactionTestCase):
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serialized_rollback = True
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def test_login_lockout_settings_insert_after_fixed_ids(self):
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with connection.schema_editor() as schema_editor:
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login_lockout.del_settings(apps, schema_editor)
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# the state after the fixed-id inserts: rows exist, the sequence starts at 1
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with connection.cursor() as cursor:
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cursor.execute("SELECT setval(pg_get_serial_sequence('appsettings_appsettings', 'id'), 1, false)")
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login_lockout.add_settings(apps, schema_editor)
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self.assertEqual(AppSettings.objects.filter(key__startswith="LOGIN_").count(), 2)
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nic_type = importlib.import_module("appsettings.migrations.0016_nic_type_rtl8139")
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class NicTypeTestCase(TestCase):
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def test_the_misspelt_nic_type_becomes_rtl8139(self):
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setting = AppSettings.objects.get(key="INSTANCE_NIC_DEFAULT_TYPE")
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self.assertEqual(setting.choices, "default,e1000,e1000e,rtl8139,virtio")
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AppSettings.objects.filter(pk=setting.pk).update(value="rt18139", choices="default,e1000,e1000e,rt18139,virtio")
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nic_type.fix_rtl8139(apps, SimpleNamespace(connection=connection))
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setting.refresh_from_db()
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self.assertEqual((setting.value, setting.choices), ("rtl8139", "default,e1000,e1000e,rtl8139,virtio"))
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class SnapshotFreeSpaceSettingsTestCase(TestCase):
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def test_the_rows_fit_their_columns(self):
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# PostgreSQL refuses a value longer than the column, sqlite does not
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for key in ("SNAPSHOT_FREE_SPACE_PERCENT", "SNAPSHOT_FREE_SPACE_MIN_GIB"):
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setting = AppSettings.objects.get(key=key)
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for field in ("name", "key", "value", "description"):
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limit = AppSettings._meta.get_field(field).max_length
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if limit:
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self.assertLessEqual(len(getattr(setting, field)), limit, f"{key} {field}")
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