openstack
/
fuel-devops
Code Issues Proposed changes

Change time policy to eliminate time drift 

At the moment we use the following structure:

<clock offset='utc'>
  <timer name='hpet' present='no'/>
</clock>

To elimintate time drift between virtual instances we are changing
structure to:

<clock offset='utc'>
  <timer name='rtc' tickpolicy='catchup' track=‘guest'>
    <catchup threshold='123' slew='120' limit='10000’/>
  </timer>
  <timer name='pit' tickpolicy='delay'/>
  <timer name='hpet' present='no'/>
</clock>

Change-Id: I3e00e7cfb11584d484665a9872ee59318e7209e7
Closes-Bug: 1394546
This commit is contained in:
Sergii Golovatiuk 2014-11-20 11:43:47 +01:00
parent a8f3d6eeab
commit a6e183936e
1 changed files with 9 additions and 0 deletions
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9
devops/driver/libvirt/libvirt_xml_builder.py
View File

@ -160,6 +160,15 @@ class LibvirtXMLBuilder(object):
node_xml.memory(str(node.memory * 1024), unit='KiB')
node_xml.clock(offset='utc')
with node_xml.clock.timer(name='rtc',
tickpolicy='catchup', track='guest'):
node_xml.catchup(
threshold='123',
slew='120',
limit='10000')
node_xml.clock.timer(
name='pit',
tickpolicy='delay')
node_xml.clock.timer(
name='hpet',
present='yes' if self.driver.hpet else 'no')