Bug 1328309 - Docs: Windows VM time goes out when snapshot taken
Summary: Docs: Windows VM time goes out when snapshot taken
Keywords:
Status: CLOSED INSUFFICIENT_DATA
Alias: None
Product: Red Hat Enterprise Virtualization Manager
Classification: Red Hat
Component: Documentation
Version: 3.5.0
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ovirt-4.1.1
: ---
Assignee: rhev-docs@redhat.com
QA Contact: rhev-docs@redhat.com
URL:
Whiteboard:
Depends On: 1354532
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-04-19 03:06 UTC by Sarvesh Pandit
Modified: 2019-12-16 05:40 UTC (History)
11 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
: 1328920 (view as bug list)
Environment:
Last Closed: 2017-05-12 06:16:14 UTC
oVirt Team: Docs
Target Upstream Version:


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Knowledge Base (Solution) 2407681 0 None None None 2016-06-27 12:19:08 UTC

Description Sarvesh Pandit 2016-04-19 03:06:37 UTC
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 info:

Following is current documentation link :

Using the Real-Time Clock with Windows virtual machines:

https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Virtualization/3.5/html-single/Administration_Guide/index.html#KVM_virtual_machine_timing_management

but boot.ini no more used after windows XP.

Comment 3 Michal Skrivanek 2016-04-20 14:57:30 UTC
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 5 Yaniv Lavi 2016-05-09 10:56:55 UTC
oVirt 4.0 Alpha has been released, moving to oVirt 4.0 Beta target.

Comment 16 Lucy Bopf 2017-05-12 06:16:14 UTC
Closing this now, as no further information was provided, and we don't mention USEPLATFORMCLOCK at all in the RHV 4.0 or 4.1 documentation.


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