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mirror of https://github.com/retspen/webvirtcloud synced 2026-11-09 11:46:49 +00:00

fix(instances): enabling vCPU hot plug keeps the current vCPU count

Enabling hot plug on a stopped VM wrote every vCPU up to the maximum as
enabled, so a VM with 2 of 4 vCPUs booted with 4. The current vCPUs stay
enabled now; libvirt adds the rest as disabled hotpluggable vCPUs.
This commit is contained in:
catborise 2026-10-10 09:43:02 +03:00
parent 251ddbbec1
commit c1d2e9610d
4 changed files with 29 additions and 3 deletions

View file

@ -1105,8 +1105,9 @@ class wvmInstance(wvmConnect):
self.instance.setVcpu(str(cpu_id), enabled)
def set_vcpu_hotplug(self, status, vcpus_hotplug=0):
"""vcpus_hotplug = 0 make all vpus hotpluggable"""
vcpus_hotplug = int(self.get_vcpu()) if vcpus_hotplug == 0 else vcpus_hotplug
"""vcpus_hotplug: the vCPUs enabled at boot, 0 keeps the current ones;
libvirt adds the rest up to the maximum as disabled hotpluggable vCPUs"""
vcpus_hotplug = self.get_cur_vcpu() if vcpus_hotplug == 0 else vcpus_hotplug
if self.get_status() == 5: # shutoff
if status:
xml = """ <vcpus>"""

View file

@ -1,7 +1,8 @@
"""Device edits of a VM: each definition is changed as it describes the
device, every NIC type can be a boot device, posted values stay values, and
definition changes go through _defineXML. An active VM's memory is resized
by balloon, a stopped one's in its definition."""
by balloon, a stopped one's in its definition. Enabling vCPU hot plug keeps
the vCPUs enabled at boot."""
import unittest
from unittest.mock import MagicMock
@ -65,6 +66,15 @@ class DetachDiskTestCase(unittest.TestCase):
p.instance.detachDeviceFlags.assert_not_called()
class VcpuHotplugTestCase(unittest.TestCase):
def test_enabling_hotplug_keeps_the_current_vcpus_enabled(self):
p = proxy(active=False)
p.instance.info.return_value = [5]
p._XMLDesc = lambda flags: "<domain><vcpu current='2'>4</vcpu></domain>"
p.set_vcpu_hotplug(True)
self.assertEqual(defined(p).xpath("vcpus/vcpu/@enabled"), ["yes", "yes"])
class DeviceEditsTestCase(unittest.TestCase):
def test_a_block_volume_is_attached_by_its_device_path(self):
p = proxy(active=False)