Add hpet option for time drifting
Since havana, the timezone of windows vm is localtime. However, there is a time drifting when the windows vm is overloaded. Disabling hpet option of clock in xml template, we can sync time without buffering. From this template, <clock offset='utc'> <timer name='pit' tickpolicy='delay'/> <timer name='rtc' tickpolicy='catchup'/> </clock> To this template, <clock offset='localtime'> <timer name='rtc' tickpolicy='catchup'/> <timer name='pit' tickpolicy='delay'/> <timer name='hpet' present='no'/> </clock> Implements : blueprint add-no-hpet-option-into-guest-clock Change-Id: I6441b9d2de5897dd1863b53bd7e2578881b53c67
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@ -804,17 +804,21 @@ class LibvirtConnTestCase(test.TestCase):
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self.assertEqual(type(cfg.clock),
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vconfig.LibvirtConfigGuestClock)
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self.assertEqual(cfg.clock.offset, "utc")
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self.assertEqual(len(cfg.clock.timers), 2)
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self.assertEqual(len(cfg.clock.timers), 3)
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self.assertEqual(type(cfg.clock.timers[0]),
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vconfig.LibvirtConfigGuestTimer)
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self.assertEqual(type(cfg.clock.timers[1]),
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vconfig.LibvirtConfigGuestTimer)
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self.assertEqual(type(cfg.clock.timers[2]),
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vconfig.LibvirtConfigGuestTimer)
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self.assertEqual(cfg.clock.timers[0].name, "pit")
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self.assertEqual(cfg.clock.timers[0].tickpolicy,
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"delay")
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self.assertEqual(cfg.clock.timers[1].name, "rtc")
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self.assertEqual(cfg.clock.timers[1].tickpolicy,
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"catchup")
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self.assertEqual(cfg.clock.timers[2].name, "hpet")
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self.assertEqual(cfg.clock.timers[2].present, False)
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def test_get_guest_config_windows(self):
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conn = libvirt_driver.LibvirtDriver(fake.FakeVirtAPI(), True)
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@ -3120,8 +3120,13 @@ class LibvirtDriver(driver.ComputeDriver):
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tmrtc.name = "rtc"
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tmrtc.tickpolicy = "catchup"
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tmhpet = vconfig.LibvirtConfigGuestTimer()
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tmhpet.name = "hpet"
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tmhpet.present = False
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clk.add_timer(tmpit)
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clk.add_timer(tmrtc)
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clk.add_timer(tmhpet)
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for cfg in self.get_guest_storage_config(instance,
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image_meta,
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