Bug 1328920

Summary:	[RFE] apply RTC parameter automatically on Windows 2008+
Product:	[oVirt] ovirt-guest-agent	Reporter:	Michal Skrivanek <michal.skrivanek>
Component:	Core	Assignee:	Vinzenz Feenstra [evilissimo] <vfeenstr>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Jiri Belka <jbelka>
Severity:	high	Docs Contact:
Priority:	high
Version:	1.0.13	CC:	bugs, didi, gklein, lsurette, lveyde, michal.skrivanek, rbalakri, rhev-docs, sapandit, sbonazzo, srevivo, thildred, trichard, vfeenstr, ykaul
Target Milestone:	ovirt-4.0.0-rc3	Keywords:	FutureFeature
Target Release:	1.0.12-2	Flags:	vfeenstr: ovirt-4.0.0? michal.skrivanek: planning_ack? rule-engine: devel_ack+ pstehlik: testing_ack+
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	oVirt-toolsSetup_4.0-1.fc23.iso	Doc Type:	Enhancement
Doc Text:	With this release, the USEPLATFORMCLOCK option is enabled automatically when the guest agent is started on virtual machines running Windows 2008 and later.	Story Points:	---
Clone Of:	1328309	Environment:
Last Closed:	2016-07-05 07:58:42 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	Virt	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Bug Depends On:	1347276
Bug Blocks:

Description Michal Skrivanek 2016-04-20 15:00:29 UTC

+++ This bug was initially created as a clone of Bug #1328309 +++

Description of problem:

Old versions of the RHEV Admin guide (https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Virtualization/3.0/html/Administration_Guide/KVM_Clock_Appendix.html) make references to "USEPLATFORMCLOCK" however, this is not mentioned in newer versions of the admin guide.

When Windows VMs have snapshots taken, they are paused for a short amount of time.  When the VM comes back, the time is out somewhat.

How do we tell Windows VMs to use the hypervisors clock?

The versions of Windows affected are Windows 2008R2 and above.

--- Additional comment from Sarvesh Pandit on 2016-04-19 05:09:24 CEST ---

I have found following documentation link for KVM :


14.3. Using the Real-Time Clock with Windows Server 2008, Windows Server 2008 R2, and Windows 7 guests

https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Virtualization_Host_Configuration_and_Guest_Installation_Guide/KVM_guest_timing_management-Using_the_Real_Time_Clock_with_Windows_2008_and_later_guests.html


--- Additional comment from Michal Skrivanek on 2016-04-20 16:57:30 CEST ---

hm, regardless doc updates this is something we can try to help with automatically as well. We have a guest agent and that one can try to do that for you. Let me clone this to a guest agent RFE

Comment 1 Sandro Bonazzola 2016-06-20 08:37:15 UTC

Not marked as blocker, I suggest to postpone to 4.0.1

Comment 2 Michal Skrivanek 2016-06-20 08:41:09 UTC

would it not be included in nightly guest-tools-iso build? Which one do we deliver?

Comment 3 Sandro Bonazzola 2016-06-20 08:55:16 UTC

Unless something changes, http://resources.ovirt.org/pub/ovirt-4.0-pre/iso/oVirt-toolsSetup/

But moving the needinfo on didi who is maintaining it.

Comment 6 Jiri Belka 2016-06-24 13:34:50 UTC

ok, tested with agent64 4.40-3 on w2k12r2.

Comment 9 Sandro Bonazzola 2016-07-05 07:58:42 UTC

oVirt 4.0.0 has been released, closing current release.

Comment 10 Michal Skrivanek 2016-07-11 13:53:54 UTC

note we want to change the behavior (almost) the other way around in bug 1354532